From 318d834ef1d4b743e25bca0761e7fb00dfb2616c Mon Sep 17 00:00:00 2001 From: Steffen Siering Date: Wed, 19 Oct 2016 09:04:30 +0200 Subject: [PATCH] Update sarama to master + SASL fix (#2798) (#2804) * Update sarama to master + SASL fix - based on v1.10.1 - master: - fixes bug in in v0.10 protocol if compression is enabled (default) - introduces broker metrics - SASL/plain included * Add kafka 0.10.0.1 version string to config * Hook up sarama kafka metrics --- CHANGELOG.asciidoc | 2 + glide.yaml | 5 +- libbeat/outputs/kafka/kafka.go | 24 +- .../Shopify/sarama/.github/ISSUE_TEMPLATE.md | 1 + vendor/github.com/Shopify/sarama/CHANGELOG.md | 15 + vendor/github.com/Shopify/sarama/broker.go | 138 +++- vendor/github.com/Shopify/sarama/client.go | 2 +- vendor/github.com/Shopify/sarama/config.go | 9 + vendor/github.com/Shopify/sarama/consumer.go | 20 +- vendor/github.com/Shopify/sarama/errors.go | 2 +- vendor/github.com/Shopify/sarama/metrics.go | 36 ++ .../github.com/Shopify/sarama/mockbroker.go | 26 +- .../github.com/Shopify/sarama/partitioner.go | 6 +- .../github.com/Shopify/sarama/produce_set.go | 17 +- vendor/github.com/Shopify/sarama/request.go | 14 +- vendor/github.com/Shopify/sarama/sarama.go | 24 + .../kafka-console-producer.go | 5 + vendor/github.com/Shopify/sarama/utils.go | 1 + vendor/github.com/rcrowley/go-metrics/LICENSE | 29 + .../github.com/rcrowley/go-metrics/README.md | 153 +++++ .../cmd/metrics-bench/metrics-bench.go | 20 + .../cmd/metrics-example/metrics-example.go | 154 +++++ .../go-metrics/cmd/never-read/never-read.go | 22 + .../github.com/rcrowley/go-metrics/counter.go | 112 ++++ .../github.com/rcrowley/go-metrics/debug.go | 76 +++ vendor/github.com/rcrowley/go-metrics/ewma.go | 118 ++++ .../github.com/rcrowley/go-metrics/exp/exp.go | 156 +++++ .../github.com/rcrowley/go-metrics/gauge.go | 120 ++++ .../rcrowley/go-metrics/gauge_float64.go | 127 ++++ .../rcrowley/go-metrics/graphite.go | 113 ++++ .../rcrowley/go-metrics/healthcheck.go | 61 ++ .../rcrowley/go-metrics/histogram.go | 202 ++++++ vendor/github.com/rcrowley/go-metrics/json.go | 87 +++ .../rcrowley/go-metrics/librato/client.go | 102 +++ .../rcrowley/go-metrics/librato/librato.go | 235 +++++++ vendor/github.com/rcrowley/go-metrics/log.go | 80 +++ .../github.com/rcrowley/go-metrics/memory.md | 285 ++++++++ .../github.com/rcrowley/go-metrics/meter.go | 233 +++++++ .../github.com/rcrowley/go-metrics/metrics.go | 13 + .../rcrowley/go-metrics/opentsdb.go | 119 ++++ .../rcrowley/go-metrics/registry.go | 270 ++++++++ .../github.com/rcrowley/go-metrics/runtime.go | 212 ++++++ .../rcrowley/go-metrics/runtime_cgo.go | 10 + .../go-metrics/runtime_gccpufraction.go | 9 + .../rcrowley/go-metrics/runtime_no_cgo.go | 7 + .../go-metrics/runtime_no_gccpufraction.go | 9 + .../github.com/rcrowley/go-metrics/sample.go | 609 ++++++++++++++++++ .../rcrowley/go-metrics/stathat/stathat.go | 69 ++ .../github.com/rcrowley/go-metrics/syslog.go | 78 +++ .../github.com/rcrowley/go-metrics/timer.go | 311 +++++++++ .../rcrowley/go-metrics/validate.sh | 10 + .../github.com/rcrowley/go-metrics/writer.go | 100 +++ 52 files changed, 4630 insertions(+), 28 deletions(-) create mode 100644 vendor/github.com/Shopify/sarama/metrics.go create mode 100644 vendor/github.com/rcrowley/go-metrics/LICENSE create mode 100644 vendor/github.com/rcrowley/go-metrics/README.md create mode 100644 vendor/github.com/rcrowley/go-metrics/cmd/metrics-bench/metrics-bench.go create mode 100644 vendor/github.com/rcrowley/go-metrics/cmd/metrics-example/metrics-example.go create mode 100644 vendor/github.com/rcrowley/go-metrics/cmd/never-read/never-read.go create mode 100644 vendor/github.com/rcrowley/go-metrics/counter.go create mode 100644 vendor/github.com/rcrowley/go-metrics/debug.go create mode 100644 vendor/github.com/rcrowley/go-metrics/ewma.go create mode 100644 vendor/github.com/rcrowley/go-metrics/exp/exp.go create mode 100644 vendor/github.com/rcrowley/go-metrics/gauge.go create mode 100644 vendor/github.com/rcrowley/go-metrics/gauge_float64.go create mode 100644 vendor/github.com/rcrowley/go-metrics/graphite.go create mode 100644 vendor/github.com/rcrowley/go-metrics/healthcheck.go create mode 100644 vendor/github.com/rcrowley/go-metrics/histogram.go create mode 100644 vendor/github.com/rcrowley/go-metrics/json.go create mode 100644 vendor/github.com/rcrowley/go-metrics/librato/client.go create mode 100644 vendor/github.com/rcrowley/go-metrics/librato/librato.go create mode 100644 vendor/github.com/rcrowley/go-metrics/log.go create mode 100644 vendor/github.com/rcrowley/go-metrics/memory.md create mode 100644 vendor/github.com/rcrowley/go-metrics/meter.go create mode 100644 vendor/github.com/rcrowley/go-metrics/metrics.go create mode 100644 vendor/github.com/rcrowley/go-metrics/opentsdb.go create mode 100644 vendor/github.com/rcrowley/go-metrics/registry.go create mode 100644 vendor/github.com/rcrowley/go-metrics/runtime.go create mode 100644 vendor/github.com/rcrowley/go-metrics/runtime_cgo.go create mode 100644 vendor/github.com/rcrowley/go-metrics/runtime_gccpufraction.go create mode 100644 vendor/github.com/rcrowley/go-metrics/runtime_no_cgo.go create mode 100644 vendor/github.com/rcrowley/go-metrics/runtime_no_gccpufraction.go create mode 100644 vendor/github.com/rcrowley/go-metrics/sample.go create mode 100644 vendor/github.com/rcrowley/go-metrics/stathat/stathat.go create mode 100644 vendor/github.com/rcrowley/go-metrics/syslog.go create mode 100644 vendor/github.com/rcrowley/go-metrics/timer.go create mode 100755 vendor/github.com/rcrowley/go-metrics/validate.sh create mode 100644 vendor/github.com/rcrowley/go-metrics/writer.go diff --git a/CHANGELOG.asciidoc b/CHANGELOG.asciidoc index c3d021f772e..baf4017730a 100644 --- a/CHANGELOG.asciidoc +++ b/CHANGELOG.asciidoc @@ -30,6 +30,8 @@ https://github.com/elastic/beats/compare/v5.0.0-rc1...5.0[Check the HEAD diff] *Affecting all Beats* - Fix kafka output re-trying batches with too large events. {issue}2735[2735] +- Fix kafka output protocol error if `version: 0.10` is configured. {issue}2651[2651] +- Fix kafka output connection closed by broker on SASL/PLAIN. {issue}2717[2717] *Metricbeat* diff --git a/glide.yaml b/glide.yaml index f7e5fbe8ff7..4ae7e0421cf 100644 --- a/glide.yaml +++ b/glide.yaml @@ -59,7 +59,10 @@ import: - package: github.com/miekg/dns version: 5d001d020961ae1c184f9f8152fdc73810481677 - package: github.com/Shopify/sarama - version: v1.10.0 + version: fix/sasl-handshake + repo: https://github.com/urso/sarama +- package: github.com/rcrowley/go-metrics + version: ab2277b1c5d15c3cba104e9cbddbdfc622df5ad8 - package: github.com/klauspost/crc32 version: v1.0 - package: github.com/golang/snappy diff --git a/libbeat/outputs/kafka/kafka.go b/libbeat/outputs/kafka/kafka.go index 90d7609c28e..ca2227cccf8 100644 --- a/libbeat/outputs/kafka/kafka.go +++ b/libbeat/outputs/kafka/kafka.go @@ -4,9 +4,12 @@ import ( "errors" "fmt" "strings" + "sync" "time" "github.com/Shopify/sarama" + metrics "github.com/rcrowley/go-metrics" + "github.com/rcrowley/go-metrics/exp" "github.com/elastic/beats/libbeat/common" "github.com/elastic/beats/libbeat/common/op" @@ -35,11 +38,26 @@ const ( defaultMaxWaitRetry = 60 * time.Second ) +var kafkaMetricsRegistryInstance metrics.Registry + func init() { sarama.Logger = kafkaLogger{} + + reg := metrics.NewPrefixedRegistry("libbeat.kafka.") + + // Note: registers /debug/metrics handler for displaying all expvar counters + exp.Exp(reg) + kafkaMetricsRegistryInstance = reg + outputs.RegisterOutputPlugin("kafka", New) } +var kafkaMetricsOnce sync.Once + +func kafkaMetricsRegistry() metrics.Registry { + return kafkaMetricsRegistryInstance +} + var debugf = logp.MakeDebug("kafka") var ( @@ -71,8 +89,9 @@ var ( "0.9": sarama.V0_9_0_1, "0.10.0.0": sarama.V0_10_0_0, - "0.10.0": sarama.V0_10_0_0, - "0.10": sarama.V0_10_0_0, + "0.10.0.1": sarama.V0_10_0_1, + "0.10.0": sarama.V0_10_0_1, + "0.10": sarama.V0_10_0_1, } ) @@ -313,5 +332,6 @@ func newKafkaConfig(config *kafkaConfig) (*sarama.Config, error) { } k.Version = version + k.MetricRegistry = kafkaMetricsRegistry() return k, nil } diff --git a/vendor/github.com/Shopify/sarama/.github/ISSUE_TEMPLATE.md b/vendor/github.com/Shopify/sarama/.github/ISSUE_TEMPLATE.md index ee6b6f785cf..7ccafb62472 100644 --- a/vendor/github.com/Shopify/sarama/.github/ISSUE_TEMPLATE.md +++ b/vendor/github.com/Shopify/sarama/.github/ISSUE_TEMPLATE.md @@ -1,5 +1,6 @@ ##### Versions +*Please specify real version numbers or git SHAs, not just "Latest" since that changes fairly regularly.* Sarama Version: Kafka Version: Go Version: diff --git a/vendor/github.com/Shopify/sarama/CHANGELOG.md b/vendor/github.com/Shopify/sarama/CHANGELOG.md index 429f65aa381..49ff92165ad 100644 --- a/vendor/github.com/Shopify/sarama/CHANGELOG.md +++ b/vendor/github.com/Shopify/sarama/CHANGELOG.md @@ -1,5 +1,20 @@ # Changelog +#### Version 1.10.1 (2016-08-30) + +Bug Fixes: + - Fix the documentation for `HashPartitioner` which was incorrect + ([#717](https://github.com/Shopify/sarama/pull/717)). + - Permit client creation even when it is limited by ACLs + ([#722](https://github.com/Shopify/sarama/pull/722)). + - Several fixes to the consumer timer optimization code, regressions introduced + in v1.10.0. Go's timers are finicky + ([#730](https://github.com/Shopify/sarama/pull/730), + [#733](https://github.com/Shopify/sarama/pull/733), + [#734](https://github.com/Shopify/sarama/pull/734)). + - Handle consuming compressed relative offsets with Kafka 0.10 + ([#735](https://github.com/Shopify/sarama/pull/735)). + #### Version 1.10.0 (2016-08-02) _Important:_ As of Sarama 1.10 it is necessary to tell Sarama the version of diff --git a/vendor/github.com/Shopify/sarama/broker.go b/vendor/github.com/Shopify/sarama/broker.go index bfcb82f37a1..d0ebbbc0ed1 100644 --- a/vendor/github.com/Shopify/sarama/broker.go +++ b/vendor/github.com/Shopify/sarama/broker.go @@ -10,6 +10,8 @@ import ( "sync" "sync/atomic" "time" + + "github.com/rcrowley/go-metrics" ) // Broker represents a single Kafka broker connection. All operations on this object are entirely concurrency-safe. @@ -26,6 +28,19 @@ type Broker struct { responses chan responsePromise done chan bool + + incomingByteRate metrics.Meter + requestRate metrics.Meter + requestSize metrics.Histogram + outgoingByteRate metrics.Meter + responseRate metrics.Meter + responseSize metrics.Histogram + brokerIncomingByteRate metrics.Meter + brokerRequestRate metrics.Meter + brokerRequestSize metrics.Histogram + brokerOutgoingByteRate metrics.Meter + brokerResponseRate metrics.Meter + brokerResponseSize metrics.Histogram } type responsePromise struct { @@ -84,8 +99,26 @@ func (b *Broker) Open(conf *Config) error { b.conf = conf + // Create or reuse the global metrics shared between brokers + b.incomingByteRate = metrics.GetOrRegisterMeter("incoming-byte-rate", conf.MetricRegistry) + b.requestRate = metrics.GetOrRegisterMeter("request-rate", conf.MetricRegistry) + b.requestSize = getOrRegisterHistogram("request-size", conf.MetricRegistry) + b.outgoingByteRate = metrics.GetOrRegisterMeter("outgoing-byte-rate", conf.MetricRegistry) + b.responseRate = metrics.GetOrRegisterMeter("response-rate", conf.MetricRegistry) + b.responseSize = getOrRegisterHistogram("response-size", conf.MetricRegistry) + // Do not gather metrics for seeded broker (only used during bootstrap) because they share + // the same id (-1) and are already exposed through the global metrics above + if b.id >= 0 { + b.brokerIncomingByteRate = getOrRegisterBrokerMeter("incoming-byte-rate", b, conf.MetricRegistry) + b.brokerRequestRate = getOrRegisterBrokerMeter("request-rate", b, conf.MetricRegistry) + b.brokerRequestSize = getOrRegisterBrokerHistogram("request-size", b, conf.MetricRegistry) + b.brokerOutgoingByteRate = getOrRegisterBrokerMeter("outgoing-byte-rate", b, conf.MetricRegistry) + b.brokerResponseRate = getOrRegisterBrokerMeter("response-rate", b, conf.MetricRegistry) + b.brokerResponseSize = getOrRegisterBrokerHistogram("response-size", b, conf.MetricRegistry) + } + if conf.Net.SASL.Enable { - b.connErr = b.sendAndReceiveSASLPlainAuth() + b.connErr = b.saslAuthenticate() if b.connErr != nil { err = b.conn.Close() if err == nil { @@ -343,7 +376,8 @@ func (b *Broker) send(rb protocolBody, promiseResponse bool) (*responsePromise, return nil, err } - _, err = b.conn.Write(buf) + bytes, err := b.conn.Write(buf) + b.updateOutgoingCommunicationMetrics(bytes) if err != nil { return nil, err } @@ -441,8 +475,9 @@ func (b *Broker) responseReceiver() { continue } - _, err = io.ReadFull(b.conn, header) + bytesReadHeader, err := io.ReadFull(b.conn, header) if err != nil { + b.updateIncomingCommunicationMetrics(bytesReadHeader) dead = err response.errors <- err continue @@ -451,11 +486,13 @@ func (b *Broker) responseReceiver() { decodedHeader := responseHeader{} err = decode(header, &decodedHeader) if err != nil { + b.updateIncomingCommunicationMetrics(bytesReadHeader) dead = err response.errors <- err continue } if decodedHeader.correlationID != response.correlationID { + b.updateIncomingCommunicationMetrics(bytesReadHeader) // TODO if decoded ID < cur ID, discard until we catch up // TODO if decoded ID > cur ID, save it so when cur ID catches up we have a response dead = PacketDecodingError{fmt.Sprintf("correlation ID didn't match, wanted %d, got %d", response.correlationID, decodedHeader.correlationID)} @@ -464,7 +501,8 @@ func (b *Broker) responseReceiver() { } buf := make([]byte, decodedHeader.length-4) - _, err = io.ReadFull(b.conn, buf) + bytesReadBody, err := io.ReadFull(b.conn, buf) + b.updateIncomingCommunicationMetrics(bytesReadHeader + bytesReadBody) if err != nil { dead = err response.errors <- err @@ -476,6 +514,62 @@ func (b *Broker) responseReceiver() { close(b.done) } +func (b *Broker) sendAndReceiveSASLHandshake(method string) error { + rb := &SaslHandshakeRequest{method} + req := &request{correlationID: b.correlationID, clientID: b.conf.ClientID, body: rb} + buf, err := encode(req) + if err != nil { + return err + } + + err = b.conn.SetWriteDeadline(time.Now().Add(b.conf.Net.WriteTimeout)) + if err != nil { + return err + } + + bytes, err := b.conn.Write(buf) + b.updateOutgoingCommunicationMetrics(bytes) + if err != nil { + Logger.Printf("Failed to send SASL handshake %s: %s\n", b.addr, err.Error()) + return err + } + b.correlationID++ + //wait for the response + header := make([]byte, 8) // response header + n, err := io.ReadFull(b.conn, header) + b.updateIncomingCommunicationMetrics(n) + length := binary.BigEndian.Uint32(header[:4]) + payload := make([]byte, length-4) + n, err = io.ReadFull(b.conn, payload) + if err != nil { + Logger.Printf("Failed to read SASL handshake payload : %s\n", err.Error()) + return err + } + b.updateIncomingCommunicationMetrics(n) + res := &SaslHandshakeResponse{} + err = versionedDecode(payload, res, 0) + if err != nil { + Logger.Printf("Failed to parse SASL handshake : %s\n", err.Error()) + return err + } + if res.Err != ErrNoError { + Logger.Printf("Invalid SASL Mechanism : %s\n", err.Error()) + return res.Err + } + Logger.Print("Successul SASL handshake") + return nil + +} + +func (b *Broker) saslAuthenticate() error { + err := b.sendAndReceiveSASLHandshake("PLAIN") + if err != nil { + Logger.Printf("Error performing SASL handshake %s: %s\n", b.addr, err) + return err + } + return b.sendAndReceiveSASLPlainAuth() +} + // Kafka 0.10.0 plans to support SASL Plain and Kerberos as per PR #812 (KIP-43)/(JIRA KAFKA-3149) // Some hosted kafka services such as IBM Message Hub already offer SASL/PLAIN auth with Kafka 0.9 // @@ -506,7 +600,8 @@ func (b *Broker) sendAndReceiveSASLPlainAuth() error { return err } - _, err = b.conn.Write(authBytes) + bytesWritten, err := b.conn.Write(authBytes) + b.updateOutgoingCommunicationMetrics(bytesWritten) if err != nil { Logger.Printf("Failed to write SASL auth header to broker %s: %s\n", b.addr, err.Error()) return err @@ -514,6 +609,7 @@ func (b *Broker) sendAndReceiveSASLPlainAuth() error { header := make([]byte, 4) n, err := io.ReadFull(b.conn, header) + b.updateIncomingCommunicationMetrics(n) // If the credentials are valid, we would get a 4 byte response filled with null characters. // Otherwise, the broker closes the connection and we get an EOF if err != nil { @@ -524,3 +620,35 @@ func (b *Broker) sendAndReceiveSASLPlainAuth() error { Logger.Printf("SASL authentication successful with broker %s:%v - %v\n", b.addr, n, header) return nil } + +func (b *Broker) updateIncomingCommunicationMetrics(bytes int) { + b.responseRate.Mark(1) + if b.brokerResponseRate != nil { + b.brokerResponseRate.Mark(1) + } + responseSize := int64(bytes) + b.incomingByteRate.Mark(responseSize) + if b.brokerIncomingByteRate != nil { + b.brokerIncomingByteRate.Mark(responseSize) + } + b.responseSize.Update(responseSize) + if b.brokerResponseSize != nil { + b.brokerResponseSize.Update(responseSize) + } +} + +func (b *Broker) updateOutgoingCommunicationMetrics(bytes int) { + b.requestRate.Mark(1) + if b.brokerRequestRate != nil { + b.brokerRequestRate.Mark(1) + } + requestSize := int64(bytes) + b.outgoingByteRate.Mark(requestSize) + if b.brokerOutgoingByteRate != nil { + b.brokerOutgoingByteRate.Mark(requestSize) + } + b.requestSize.Update(requestSize) + if b.brokerRequestSize != nil { + b.brokerRequestSize.Update(requestSize) + } +} diff --git a/vendor/github.com/Shopify/sarama/client.go b/vendor/github.com/Shopify/sarama/client.go index b8fc37bc702..e9a9ea77e32 100644 --- a/vendor/github.com/Shopify/sarama/client.go +++ b/vendor/github.com/Shopify/sarama/client.go @@ -138,7 +138,7 @@ func NewClient(addrs []string, conf *Config) (Client, error) { switch err { case nil: break - case ErrLeaderNotAvailable, ErrReplicaNotAvailable: + case ErrLeaderNotAvailable, ErrReplicaNotAvailable, ErrTopicAuthorizationFailed, ErrClusterAuthorizationFailed: // indicates that maybe part of the cluster is down, but is not fatal to creating the client Logger.Println(err) default: diff --git a/vendor/github.com/Shopify/sarama/config.go b/vendor/github.com/Shopify/sarama/config.go index b61bf7ea411..9cab8349180 100644 --- a/vendor/github.com/Shopify/sarama/config.go +++ b/vendor/github.com/Shopify/sarama/config.go @@ -4,6 +4,8 @@ import ( "crypto/tls" "regexp" "time" + + "github.com/rcrowley/go-metrics" ) const defaultClientID = "sarama" @@ -233,6 +235,12 @@ type Config struct { // latest features. Setting it to a version greater than you are actually // running may lead to random breakage. Version KafkaVersion + // The registry to define metrics into. + // Defaults to a local registry. + // If you want to disable metrics gathering, set "metrics.UseNilMetrics" to "true" + // prior to starting Sarama. + // See Examples on how to use the metrics registry + MetricRegistry metrics.Registry } // NewConfig returns a new configuration instance with sane defaults. @@ -268,6 +276,7 @@ func NewConfig() *Config { c.ClientID = defaultClientID c.ChannelBufferSize = 256 c.Version = minVersion + c.MetricRegistry = metrics.NewRegistry() return c } diff --git a/vendor/github.com/Shopify/sarama/consumer.go b/vendor/github.com/Shopify/sarama/consumer.go index c70b528f009..5271e21deaf 100644 --- a/vendor/github.com/Shopify/sarama/consumer.go +++ b/vendor/github.com/Shopify/sarama/consumer.go @@ -414,17 +414,24 @@ func (child *partitionConsumer) HighWaterMarkOffset() int64 { func (child *partitionConsumer) responseFeeder() { var msgs []*ConsumerMessage expiryTimer := time.NewTimer(child.conf.Consumer.MaxProcessingTime) + expireTimedOut := false feederLoop: for response := range child.feeder { msgs, child.responseResult = child.parseResponse(response) for i, msg := range msgs { + if !expiryTimer.Stop() && !expireTimedOut { + // expiryTimer was expired; clear out the waiting msg + <-expiryTimer.C + } expiryTimer.Reset(child.conf.Consumer.MaxProcessingTime) + expireTimedOut = false select { case child.messages <- msg: case <-expiryTimer.C: + expireTimedOut = true child.responseResult = errTimedOut child.broker.acks.Done() for _, msg = range msgs[i:] { @@ -481,21 +488,26 @@ func (child *partitionConsumer) parseResponse(response *FetchResponse) ([]*Consu for _, msgBlock := range block.MsgSet.Messages { for _, msg := range msgBlock.Messages() { - if prelude && msg.Offset < child.offset { + offset := msg.Offset + if msg.Msg.Version >= 1 { + baseOffset := msgBlock.Offset - msgBlock.Messages()[len(msgBlock.Messages())-1].Offset + offset += baseOffset + } + if prelude && offset < child.offset { continue } prelude = false - if msg.Offset >= child.offset { + if offset >= child.offset { messages = append(messages, &ConsumerMessage{ Topic: child.topic, Partition: child.partition, Key: msg.Msg.Key, Value: msg.Msg.Value, - Offset: msg.Offset, + Offset: offset, Timestamp: msg.Msg.Timestamp, }) - child.offset = msg.Offset + 1 + child.offset = offset + 1 } else { incomplete = true } diff --git a/vendor/github.com/Shopify/sarama/errors.go b/vendor/github.com/Shopify/sarama/errors.go index cfb7006f773..aa8f213d3cc 100644 --- a/vendor/github.com/Shopify/sarama/errors.go +++ b/vendor/github.com/Shopify/sarama/errors.go @@ -135,7 +135,7 @@ func (err KError) Error() string { case ErrBrokerNotAvailable: return "kafka server: Broker not available. Not a client facing error, we should never receive this!!!" case ErrReplicaNotAvailable: - return "kafka server: Replica infomation not available, one or more brokers are down." + return "kafka server: Replica information not available, one or more brokers are down." case ErrMessageSizeTooLarge: return "kafka server: Message was too large, server rejected it to avoid allocation error." case ErrStaleControllerEpochCode: diff --git a/vendor/github.com/Shopify/sarama/metrics.go b/vendor/github.com/Shopify/sarama/metrics.go new file mode 100644 index 00000000000..2b08d39883d --- /dev/null +++ b/vendor/github.com/Shopify/sarama/metrics.go @@ -0,0 +1,36 @@ +package sarama + +import ( + "fmt" + + "github.com/rcrowley/go-metrics" +) + +// Use exponentially decaying reservoir for sampling histograms with the same defaults as the Java library: +// 1028 elements, which offers a 99.9% confidence level with a 5% margin of error assuming a normal distribution, +// and an alpha factor of 0.015, which heavily biases the reservoir to the past 5 minutes of measurements. +// See https://github.com/dropwizard/metrics/blob/v3.1.0/metrics-core/src/main/java/com/codahale/metrics/ExponentiallyDecayingReservoir.java#L38 +const ( + metricsReservoirSize = 1028 + metricsAlphaFactor = 0.015 +) + +func getOrRegisterHistogram(name string, r metrics.Registry) metrics.Histogram { + return r.GetOrRegister(name, func() metrics.Histogram { + return metrics.NewHistogram(metrics.NewExpDecaySample(metricsReservoirSize, metricsAlphaFactor)) + }).(metrics.Histogram) +} + +func getMetricNameForBroker(name string, broker *Broker) string { + // Use broker id like the Java client as it does not contain '.' or ':' characters that + // can be interpreted as special character by monitoring tool (e.g. Graphite) + return fmt.Sprintf(name+"-for-broker-%d", broker.ID()) +} + +func getOrRegisterBrokerMeter(name string, broker *Broker, r metrics.Registry) metrics.Meter { + return metrics.GetOrRegisterMeter(getMetricNameForBroker(name, broker), r) +} + +func getOrRegisterBrokerHistogram(name string, broker *Broker, r metrics.Registry) metrics.Histogram { + return getOrRegisterHistogram(getMetricNameForBroker(name, broker), r) +} diff --git a/vendor/github.com/Shopify/sarama/mockbroker.go b/vendor/github.com/Shopify/sarama/mockbroker.go index 36996a50cfb..e8bd088c5a5 100644 --- a/vendor/github.com/Shopify/sarama/mockbroker.go +++ b/vendor/github.com/Shopify/sarama/mockbroker.go @@ -20,6 +20,10 @@ const ( type requestHandlerFunc func(req *request) (res encoder) +// RequestNotifierFunc is invoked when a mock broker processes a request successfully +// and will provides the number of bytes read and written. +type RequestNotifierFunc func(bytesRead, bytesWritten int) + // MockBroker is a mock Kafka broker that is used in unit tests. It is exposed // to facilitate testing of higher level or specialized consumers and producers // built on top of Sarama. Note that it does not 'mimic' the Kafka API protocol, @@ -54,6 +58,7 @@ type MockBroker struct { t TestReporter latency time.Duration handler requestHandlerFunc + notifier RequestNotifierFunc history []RequestResponse lock sync.Mutex } @@ -85,6 +90,14 @@ func (b *MockBroker) SetHandlerByMap(handlerMap map[string]MockResponse) { }) } +// SetNotifier set a function that will get invoked whenever a request has been +// processed successfully and will provide the number of bytes read and written +func (b *MockBroker) SetNotifier(notifier RequestNotifierFunc) { + b.lock.Lock() + b.notifier = notifier + b.lock.Unlock() +} + // BrokerID returns broker ID assigned to the broker. func (b *MockBroker) BrokerID() int32 { return b.brokerID @@ -180,7 +193,7 @@ func (b *MockBroker) handleRequests(conn net.Conn, idx int, wg *sync.WaitGroup) resHeader := make([]byte, 8) for { - req, err := decodeRequest(conn) + req, bytesRead, err := decodeRequest(conn) if err != nil { Logger.Printf("*** mockbroker/%d/%d: invalid request: err=%+v, %+v", b.brokerID, idx, err, spew.Sdump(req)) b.serverError(err) @@ -208,6 +221,11 @@ func (b *MockBroker) handleRequests(conn net.Conn, idx int, wg *sync.WaitGroup) break } if len(encodedRes) == 0 { + b.lock.Lock() + if b.notifier != nil { + b.notifier(bytesRead, 0) + } + b.lock.Unlock() continue } @@ -221,6 +239,12 @@ func (b *MockBroker) handleRequests(conn net.Conn, idx int, wg *sync.WaitGroup) b.serverError(err) break } + + b.lock.Lock() + if b.notifier != nil { + b.notifier(bytesRead, len(resHeader)+len(encodedRes)) + } + b.lock.Unlock() } Logger.Printf("*** mockbroker/%d/%d: connection closed, err=%v", b.BrokerID(), idx, err) } diff --git a/vendor/github.com/Shopify/sarama/partitioner.go b/vendor/github.com/Shopify/sarama/partitioner.go index 3697ca82bde..d24199da9c2 100644 --- a/vendor/github.com/Shopify/sarama/partitioner.go +++ b/vendor/github.com/Shopify/sarama/partitioner.go @@ -87,9 +87,9 @@ type hashPartitioner struct { hasher hash.Hash32 } -// NewHashPartitioner returns a Partitioner which behaves as follows. If the message's key is nil, or fails to -// encode, then a random partition is chosen. Otherwise the FNV-1a hash of the encoded bytes of the message key -// is used, modulus the number of partitions. This ensures that messages with the same key always end up on the +// NewHashPartitioner returns a Partitioner which behaves as follows. If the message's key is nil then a +// random partition is chosen. Otherwise the FNV-1a hash of the encoded bytes of the message key is used, +// modulus the number of partitions. This ensures that messages with the same key always end up on the // same partition. func NewHashPartitioner(topic string) Partitioner { p := new(hashPartitioner) diff --git a/vendor/github.com/Shopify/sarama/produce_set.go b/vendor/github.com/Shopify/sarama/produce_set.go index 992f1f141ce..74025b0e9ae 100644 --- a/vendor/github.com/Shopify/sarama/produce_set.go +++ b/vendor/github.com/Shopify/sarama/produce_set.go @@ -53,8 +53,12 @@ func (ps *produceSet) add(msg *ProducerMessage) error { set.msgs = append(set.msgs, msg) msgToSend := &Message{Codec: CompressionNone, Key: key, Value: val} - if ps.parent.conf.Version.IsAtLeast(V0_10_0_0) && !msg.Timestamp.IsZero() { - msgToSend.Timestamp = msg.Timestamp + if ps.parent.conf.Version.IsAtLeast(V0_10_0_0) { + if msg.Timestamp.IsZero() { + msgToSend.Timestamp = time.Now() + } else { + msgToSend.Timestamp = msg.Timestamp + } msgToSend.Version = 1 } set.setToSend.addMessage(msgToSend) @@ -90,11 +94,16 @@ func (ps *produceSet) buildRequest() *ProduceRequest { Logger.Println(err) // if this happens, it's basically our fault. panic(err) } - req.AddMessage(topic, partition, &Message{ + compMsg := &Message{ Codec: ps.parent.conf.Producer.Compression, Key: nil, Value: payload, - }) + } + if ps.parent.conf.Version.IsAtLeast(V0_10_0_0) { + compMsg.Version = 1 + compMsg.Timestamp = set.setToSend.Messages[0].Msg.Timestamp + } + req.AddMessage(topic, partition, compMsg) } } } diff --git a/vendor/github.com/Shopify/sarama/request.go b/vendor/github.com/Shopify/sarama/request.go index 5dd337b0db6..3cca8bd208c 100644 --- a/vendor/github.com/Shopify/sarama/request.go +++ b/vendor/github.com/Shopify/sarama/request.go @@ -57,27 +57,29 @@ func (r *request) decode(pd packetDecoder) (err error) { return r.body.decode(pd, version) } -func decodeRequest(r io.Reader) (req *request, err error) { +func decodeRequest(r io.Reader) (req *request, bytesRead int, err error) { lengthBytes := make([]byte, 4) if _, err := io.ReadFull(r, lengthBytes); err != nil { - return nil, err + return nil, bytesRead, err } + bytesRead += len(lengthBytes) length := int32(binary.BigEndian.Uint32(lengthBytes)) if length <= 4 || length > MaxRequestSize { - return nil, PacketDecodingError{fmt.Sprintf("message of length %d too large or too small", length)} + return nil, bytesRead, PacketDecodingError{fmt.Sprintf("message of length %d too large or too small", length)} } encodedReq := make([]byte, length) if _, err := io.ReadFull(r, encodedReq); err != nil { - return nil, err + return nil, bytesRead, err } + bytesRead += len(encodedReq) req = &request{} if err := decode(encodedReq, req); err != nil { - return nil, err + return nil, bytesRead, err } - return req, nil + return req, bytesRead, nil } func allocateBody(key, version int16) protocolBody { diff --git a/vendor/github.com/Shopify/sarama/sarama.go b/vendor/github.com/Shopify/sarama/sarama.go index 8faa74a91aa..a33b1bdba20 100644 --- a/vendor/github.com/Shopify/sarama/sarama.go +++ b/vendor/github.com/Shopify/sarama/sarama.go @@ -20,6 +20,30 @@ and message sent on the wire; the Client provides higher-level metadata manageme the producers and the consumer. The Request/Response objects and properties are mostly undocumented, as they line up exactly with the protocol fields documented by Kafka at https://cwiki.apache.org/confluence/display/KAFKA/A+Guide+To+The+Kafka+Protocol + +Metrics are exposed through https://github.com/rcrowley/go-metrics library in a local registry. + +Broker related metrics: + + +------------------------------------------------+------------+---------------------------------------------------------------+ + | Name | Type | Description | + +------------------------------------------------+------------+---------------------------------------------------------------+ + | incoming-byte-rate | meter | Bytes/second read off all brokers | + | incoming-byte-rate-for-broker- | meter | Bytes/second read off a given broker | + | outgoing-byte-rate | meter | Bytes/second written off all brokers | + | outgoing-byte-rate-for-broker- | meter | Bytes/second written off a given broker | + | request-rate | meter | Requests/second sent to all brokers | + | request-rate-for-broker- | meter | Requests/second sent to a given broker | + | histogram request-size | histogram | Distribution of the request size in bytes for all brokers | + | histogram request-size-for-broker- | histogram | Distribution of the request size in bytes for a given broker | + | response-rate | meter | Responses/second received from all brokers | + | response-rate-for-broker- | meter | Responses/second received from a given broker | + | histogram response-size | histogram | Distribution of the response size in bytes for all brokers | + | histogram response-size-for-broker- | histogram | Distribution of the response size in bytes for a given broker | + +------------------------------------------------+------------+---------------------------------------------------------------+ + +Note that we do not gather specific metrics for seed brokers but they are part of the "all brokers" metrics. + */ package sarama diff --git a/vendor/github.com/Shopify/sarama/tools/kafka-console-producer/kafka-console-producer.go b/vendor/github.com/Shopify/sarama/tools/kafka-console-producer/kafka-console-producer.go index 6a1765d7c9f..e0ef7daaa9f 100644 --- a/vendor/github.com/Shopify/sarama/tools/kafka-console-producer/kafka-console-producer.go +++ b/vendor/github.com/Shopify/sarama/tools/kafka-console-producer/kafka-console-producer.go @@ -9,6 +9,7 @@ import ( "strings" "github.com/Shopify/sarama" + "github.com/rcrowley/go-metrics" ) var ( @@ -19,6 +20,7 @@ var ( partitioner = flag.String("partitioner", "", "The partitioning scheme to use. Can be `hash`, `manual`, or `random`") partition = flag.Int("partition", -1, "The partition to produce to.") verbose = flag.Bool("verbose", false, "Turn on sarama logging to stderr") + showMetrics = flag.Bool("metrics", false, "Output metrics on successful publish to stderr") silent = flag.Bool("silent", false, "Turn off printing the message's topic, partition, and offset to stdout") logger = log.New(os.Stderr, "", log.LstdFlags) @@ -96,6 +98,9 @@ func main() { } else if !*silent { fmt.Printf("topic=%s\tpartition=%d\toffset=%d\n", *topic, partition, offset) } + if *showMetrics { + metrics.WriteOnce(config.MetricRegistry, os.Stderr) + } } func printErrorAndExit(code int, format string, values ...interface{}) { diff --git a/vendor/github.com/Shopify/sarama/utils.go b/vendor/github.com/Shopify/sarama/utils.go index b60e53a07cd..c2da38666e3 100644 --- a/vendor/github.com/Shopify/sarama/utils.go +++ b/vendor/github.com/Shopify/sarama/utils.go @@ -146,5 +146,6 @@ var ( V0_9_0_0 = newKafkaVersion(0, 9, 0, 0) V0_9_0_1 = newKafkaVersion(0, 9, 0, 1) V0_10_0_0 = newKafkaVersion(0, 10, 0, 0) + V0_10_0_1 = newKafkaVersion(0, 10, 0, 1) minVersion = V0_8_2_0 ) diff --git a/vendor/github.com/rcrowley/go-metrics/LICENSE b/vendor/github.com/rcrowley/go-metrics/LICENSE new file mode 100644 index 00000000000..363fa9ee77b --- /dev/null +++ b/vendor/github.com/rcrowley/go-metrics/LICENSE @@ -0,0 +1,29 @@ +Copyright 2012 Richard Crowley. All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are +met: + + 1. Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + + 2. Redistributions in binary form must reproduce the above + copyright notice, this list of conditions and the following + disclaimer in the documentation and/or other materials provided + with the distribution. + +THIS SOFTWARE IS PROVIDED BY RICHARD CROWLEY ``AS IS'' AND ANY EXPRESS +OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED +WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE +DISCLAIMED. IN NO EVENT SHALL RICHARD CROWLEY OR CONTRIBUTORS BE LIABLE +FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR +CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF +SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN +CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) +ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF +THE POSSIBILITY OF SUCH DAMAGE. + +The views and conclusions contained in the software and documentation +are those of the authors and should not be interpreted as representing +official policies, either expressed or implied, of Richard Crowley. diff --git a/vendor/github.com/rcrowley/go-metrics/README.md b/vendor/github.com/rcrowley/go-metrics/README.md new file mode 100644 index 00000000000..2d1a6dcfa44 --- /dev/null +++ b/vendor/github.com/rcrowley/go-metrics/README.md @@ -0,0 +1,153 @@ +go-metrics +========== + +![travis build status](https://travis-ci.org/rcrowley/go-metrics.svg?branch=master) + +Go port of Coda Hale's Metrics library: . + +Documentation: . + +Usage +----- + +Create and update metrics: + +```go +c := metrics.NewCounter() +metrics.Register("foo", c) +c.Inc(47) + +g := metrics.NewGauge() +metrics.Register("bar", g) +g.Update(47) + +r := NewRegistry() +g := metrics.NewRegisteredFunctionalGauge("cache-evictions", r, func() int64 { return cache.getEvictionsCount() }) + +s := metrics.NewExpDecaySample(1028, 0.015) // or metrics.NewUniformSample(1028) +h := metrics.NewHistogram(s) +metrics.Register("baz", h) +h.Update(47) + +m := metrics.NewMeter() +metrics.Register("quux", m) +m.Mark(47) + +t := metrics.NewTimer() +metrics.Register("bang", t) +t.Time(func() {}) +t.Update(47) +``` + +Register() is not threadsafe. For threadsafe metric registration use +GetOrRegister: + +``` +t := metrics.GetOrRegisterTimer("account.create.latency", nil) +t.Time(func() {}) +t.Update(47) +``` + +Periodically log every metric in human-readable form to standard error: + +```go +go metrics.Log(metrics.DefaultRegistry, 5 * time.Second, log.New(os.Stderr, "metrics: ", log.Lmicroseconds)) +``` + +Periodically log every metric in slightly-more-parseable form to syslog: + +```go +w, _ := syslog.Dial("unixgram", "/dev/log", syslog.LOG_INFO, "metrics") +go metrics.Syslog(metrics.DefaultRegistry, 60e9, w) +``` + +Periodically emit every metric to Graphite using the [Graphite client](https://github.com/cyberdelia/go-metrics-graphite): + +```go + +import "github.com/cyberdelia/go-metrics-graphite" + +addr, _ := net.ResolveTCPAddr("tcp", "127.0.0.1:2003") +go graphite.Graphite(metrics.DefaultRegistry, 10e9, "metrics", addr) +``` + +Periodically emit every metric into InfluxDB: + +**NOTE:** this has been pulled out of the library due to constant fluctuations +in the InfluxDB API. In fact, all client libraries are on their way out. see +issues [#121](https://github.com/rcrowley/go-metrics/issues/121) and +[#124](https://github.com/rcrowley/go-metrics/issues/124) for progress and details. + +```go +import "github.com/vrischmann/go-metrics-influxdb" + +go influxdb.Influxdb(metrics.DefaultRegistry, 10e9, &influxdb.Config{ + Host: "127.0.0.1:8086", + Database: "metrics", + Username: "test", + Password: "test", +}) +``` + +Periodically upload every metric to Librato using the [Librato client](https://github.com/mihasya/go-metrics-librato): + +**Note**: the client included with this repository under the `librato` package +has been deprecated and moved to the repository linked above. + +```go +import "github.com/mihasya/go-metrics-librato" + +go librato.Librato(metrics.DefaultRegistry, + 10e9, // interval + "example@example.com", // account owner email address + "token", // Librato API token + "hostname", // source + []float64{0.95}, // percentiles to send + time.Millisecond, // time unit +) +``` + +Periodically emit every metric to StatHat: + +```go +import "github.com/rcrowley/go-metrics/stathat" + +go stathat.Stathat(metrics.DefaultRegistry, 10e9, "example@example.com") +``` + +Maintain all metrics along with expvars at `/debug/metrics`: + +This uses the same mechanism as [the official expvar](http://golang.org/pkg/expvar/) +but exposed under `/debug/metrics`, which shows a json representation of all your usual expvars +as well as all your go-metrics. + + +```go +import "github.com/rcrowley/go-metrics/exp" + +exp.Exp(metrics.DefaultRegistry) +``` + +Installation +------------ + +```sh +go get github.com/rcrowley/go-metrics +``` + +StatHat support additionally requires their Go client: + +```sh +go get github.com/stathat/go +``` + +Publishing Metrics +------------------ + +Clients are available for the following destinations: + +* Librato - [https://github.com/mihasya/go-metrics-librato](https://github.com/mihasya/go-metrics-librato) +* Graphite - [https://github.com/cyberdelia/go-metrics-graphite](https://github.com/cyberdelia/go-metrics-graphite) +* InfluxDB - [https://github.com/vrischmann/go-metrics-influxdb](https://github.com/vrischmann/go-metrics-influxdb) +* Ganglia - [https://github.com/appscode/metlia](https://github.com/appscode/metlia) +* Prometheus - [https://github.com/deathowl/go-metrics-prometheus](https://github.com/deathowl/go-metrics-prometheus) diff --git a/vendor/github.com/rcrowley/go-metrics/cmd/metrics-bench/metrics-bench.go b/vendor/github.com/rcrowley/go-metrics/cmd/metrics-bench/metrics-bench.go new file mode 100644 index 00000000000..dddaf4b1263 --- /dev/null +++ b/vendor/github.com/rcrowley/go-metrics/cmd/metrics-bench/metrics-bench.go @@ -0,0 +1,20 @@ +package main + +import ( + "fmt" + "github.com/rcrowley/go-metrics" + "time" +) + +func main() { + r := metrics.NewRegistry() + for i := 0; i < 10000; i++ { + r.Register(fmt.Sprintf("counter-%d", i), metrics.NewCounter()) + r.Register(fmt.Sprintf("gauge-%d", i), metrics.NewGauge()) + r.Register(fmt.Sprintf("gaugefloat64-%d", i), metrics.NewGaugeFloat64()) + r.Register(fmt.Sprintf("histogram-uniform-%d", i), metrics.NewHistogram(metrics.NewUniformSample(1028))) + r.Register(fmt.Sprintf("histogram-exp-%d", i), metrics.NewHistogram(metrics.NewExpDecaySample(1028, 0.015))) + r.Register(fmt.Sprintf("meter-%d", i), metrics.NewMeter()) + } + time.Sleep(600e9) +} diff --git a/vendor/github.com/rcrowley/go-metrics/cmd/metrics-example/metrics-example.go b/vendor/github.com/rcrowley/go-metrics/cmd/metrics-example/metrics-example.go new file mode 100644 index 00000000000..66f42c0468f --- /dev/null +++ b/vendor/github.com/rcrowley/go-metrics/cmd/metrics-example/metrics-example.go @@ -0,0 +1,154 @@ +package main + +import ( + "errors" + "github.com/rcrowley/go-metrics" + // "github.com/rcrowley/go-metrics/stathat" + "log" + "math/rand" + "os" + // "syslog" + "time" +) + +const fanout = 10 + +func main() { + + r := metrics.NewRegistry() + + c := metrics.NewCounter() + r.Register("foo", c) + for i := 0; i < fanout; i++ { + go func() { + for { + c.Dec(19) + time.Sleep(300e6) + } + }() + go func() { + for { + c.Inc(47) + time.Sleep(400e6) + } + }() + } + + g := metrics.NewGauge() + r.Register("bar", g) + for i := 0; i < fanout; i++ { + go func() { + for { + g.Update(19) + time.Sleep(300e6) + } + }() + go func() { + for { + g.Update(47) + time.Sleep(400e6) + } + }() + } + + gf := metrics.NewGaugeFloat64() + r.Register("barfloat64", gf) + for i := 0; i < fanout; i++ { + go func() { + for { + g.Update(19.0) + time.Sleep(300e6) + } + }() + go func() { + for { + g.Update(47.0) + time.Sleep(400e6) + } + }() + } + + hc := metrics.NewHealthcheck(func(h metrics.Healthcheck) { + if 0 < rand.Intn(2) { + h.Healthy() + } else { + h.Unhealthy(errors.New("baz")) + } + }) + r.Register("baz", hc) + + s := metrics.NewExpDecaySample(1028, 0.015) + //s := metrics.NewUniformSample(1028) + h := metrics.NewHistogram(s) + r.Register("bang", h) + for i := 0; i < fanout; i++ { + go func() { + for { + h.Update(19) + time.Sleep(300e6) + } + }() + go func() { + for { + h.Update(47) + time.Sleep(400e6) + } + }() + } + + m := metrics.NewMeter() + r.Register("quux", m) + for i := 0; i < fanout; i++ { + go func() { + for { + m.Mark(19) + time.Sleep(300e6) + } + }() + go func() { + for { + m.Mark(47) + time.Sleep(400e6) + } + }() + } + + t := metrics.NewTimer() + r.Register("hooah", t) + for i := 0; i < fanout; i++ { + go func() { + for { + t.Time(func() { time.Sleep(300e6) }) + } + }() + go func() { + for { + t.Time(func() { time.Sleep(400e6) }) + } + }() + } + + metrics.RegisterDebugGCStats(r) + go metrics.CaptureDebugGCStats(r, 5e9) + + metrics.RegisterRuntimeMemStats(r) + go metrics.CaptureRuntimeMemStats(r, 5e9) + + metrics.Log(r, 60e9, log.New(os.Stderr, "metrics: ", log.Lmicroseconds)) + + /* + w, err := syslog.Dial("unixgram", "/dev/log", syslog.LOG_INFO, "metrics") + if nil != err { log.Fatalln(err) } + metrics.Syslog(r, 60e9, w) + */ + + /* + addr, _ := net.ResolveTCPAddr("tcp", "127.0.0.1:2003") + metrics.Graphite(r, 10e9, "metrics", addr) + */ + + /* + stathat.Stathat(r, 10e9, "example@example.com") + */ + +} diff --git a/vendor/github.com/rcrowley/go-metrics/cmd/never-read/never-read.go b/vendor/github.com/rcrowley/go-metrics/cmd/never-read/never-read.go new file mode 100644 index 00000000000..dc175b778e8 --- /dev/null +++ b/vendor/github.com/rcrowley/go-metrics/cmd/never-read/never-read.go @@ -0,0 +1,22 @@ +package main + +import ( + "log" + "net" +) + +func main() { + addr, _ := net.ResolveTCPAddr("tcp", "127.0.0.1:2003") + l, err := net.ListenTCP("tcp", addr) + if nil != err { + log.Fatalln(err) + } + log.Println("listening", l.Addr()) + for { + c, err := l.AcceptTCP() + if nil != err { + log.Fatalln(err) + } + log.Println("accepted", c.RemoteAddr()) + } +} diff --git a/vendor/github.com/rcrowley/go-metrics/counter.go b/vendor/github.com/rcrowley/go-metrics/counter.go new file mode 100644 index 00000000000..bb7b039cb57 --- /dev/null +++ b/vendor/github.com/rcrowley/go-metrics/counter.go @@ -0,0 +1,112 @@ +package metrics + +import "sync/atomic" + +// Counters hold an int64 value that can be incremented and decremented. +type Counter interface { + Clear() + Count() int64 + Dec(int64) + Inc(int64) + Snapshot() Counter +} + +// GetOrRegisterCounter returns an existing Counter or constructs and registers +// a new StandardCounter. +func GetOrRegisterCounter(name string, r Registry) Counter { + if nil == r { + r = DefaultRegistry + } + return r.GetOrRegister(name, NewCounter).(Counter) +} + +// NewCounter constructs a new StandardCounter. +func NewCounter() Counter { + if UseNilMetrics { + return NilCounter{} + } + return &StandardCounter{0} +} + +// NewRegisteredCounter constructs and registers a new StandardCounter. +func NewRegisteredCounter(name string, r Registry) Counter { + c := NewCounter() + if nil == r { + r = DefaultRegistry + } + r.Register(name, c) + return c +} + +// CounterSnapshot is a read-only copy of another Counter. +type CounterSnapshot int64 + +// Clear panics. +func (CounterSnapshot) Clear() { + panic("Clear called on a CounterSnapshot") +} + +// Count returns the count at the time the snapshot was taken. +func (c CounterSnapshot) Count() int64 { return int64(c) } + +// Dec panics. +func (CounterSnapshot) Dec(int64) { + panic("Dec called on a CounterSnapshot") +} + +// Inc panics. +func (CounterSnapshot) Inc(int64) { + panic("Inc called on a CounterSnapshot") +} + +// Snapshot returns the snapshot. +func (c CounterSnapshot) Snapshot() Counter { return c } + +// NilCounter is a no-op Counter. +type NilCounter struct{} + +// Clear is a no-op. +func (NilCounter) Clear() {} + +// Count is a no-op. +func (NilCounter) Count() int64 { return 0 } + +// Dec is a no-op. +func (NilCounter) Dec(i int64) {} + +// Inc is a no-op. +func (NilCounter) Inc(i int64) {} + +// Snapshot is a no-op. +func (NilCounter) Snapshot() Counter { return NilCounter{} } + +// StandardCounter is the standard implementation of a Counter and uses the +// sync/atomic package to manage a single int64 value. +type StandardCounter struct { + count int64 +} + +// Clear sets the counter to zero. +func (c *StandardCounter) Clear() { + atomic.StoreInt64(&c.count, 0) +} + +// Count returns the current count. +func (c *StandardCounter) Count() int64 { + return atomic.LoadInt64(&c.count) +} + +// Dec decrements the counter by the given amount. +func (c *StandardCounter) Dec(i int64) { + atomic.AddInt64(&c.count, -i) +} + +// Inc increments the counter by the given amount. +func (c *StandardCounter) Inc(i int64) { + atomic.AddInt64(&c.count, i) +} + +// Snapshot returns a read-only copy of the counter. +func (c *StandardCounter) Snapshot() Counter { + return CounterSnapshot(c.Count()) +} diff --git a/vendor/github.com/rcrowley/go-metrics/debug.go b/vendor/github.com/rcrowley/go-metrics/debug.go new file mode 100644 index 00000000000..043ccefab61 --- /dev/null +++ b/vendor/github.com/rcrowley/go-metrics/debug.go @@ -0,0 +1,76 @@ +package metrics + +import ( + "runtime/debug" + "time" +) + +var ( + debugMetrics struct { + GCStats struct { + LastGC Gauge + NumGC Gauge + Pause Histogram + //PauseQuantiles Histogram + PauseTotal Gauge + } + ReadGCStats Timer + } + gcStats debug.GCStats +) + +// Capture new values for the Go garbage collector statistics exported in +// debug.GCStats. This is designed to be called as a goroutine. +func CaptureDebugGCStats(r Registry, d time.Duration) { + for _ = range time.Tick(d) { + CaptureDebugGCStatsOnce(r) + } +} + +// Capture new values for the Go garbage collector statistics exported in +// debug.GCStats. This is designed to be called in a background goroutine. +// Giving a registry which has not been given to RegisterDebugGCStats will +// panic. +// +// Be careful (but much less so) with this because debug.ReadGCStats calls +// the C function runtime·lock(runtime·mheap) which, while not a stop-the-world +// operation, isn't something you want to be doing all the time. +func CaptureDebugGCStatsOnce(r Registry) { + lastGC := gcStats.LastGC + t := time.Now() + debug.ReadGCStats(&gcStats) + debugMetrics.ReadGCStats.UpdateSince(t) + + debugMetrics.GCStats.LastGC.Update(int64(gcStats.LastGC.UnixNano())) + debugMetrics.GCStats.NumGC.Update(int64(gcStats.NumGC)) + if lastGC != gcStats.LastGC && 0 < len(gcStats.Pause) { + debugMetrics.GCStats.Pause.Update(int64(gcStats.Pause[0])) + } + //debugMetrics.GCStats.PauseQuantiles.Update(gcStats.PauseQuantiles) + debugMetrics.GCStats.PauseTotal.Update(int64(gcStats.PauseTotal)) +} + +// Register metrics for the Go garbage collector statistics exported in +// debug.GCStats. The metrics are named by their fully-qualified Go symbols, +// i.e. debug.GCStats.PauseTotal. +func RegisterDebugGCStats(r Registry) { + debugMetrics.GCStats.LastGC = NewGauge() + debugMetrics.GCStats.NumGC = NewGauge() + debugMetrics.GCStats.Pause = NewHistogram(NewExpDecaySample(1028, 0.015)) + //debugMetrics.GCStats.PauseQuantiles = NewHistogram(NewExpDecaySample(1028, 0.015)) + debugMetrics.GCStats.PauseTotal = NewGauge() + debugMetrics.ReadGCStats = NewTimer() + + r.Register("debug.GCStats.LastGC", debugMetrics.GCStats.LastGC) + r.Register("debug.GCStats.NumGC", debugMetrics.GCStats.NumGC) + r.Register("debug.GCStats.Pause", debugMetrics.GCStats.Pause) + //r.Register("debug.GCStats.PauseQuantiles", debugMetrics.GCStats.PauseQuantiles) + r.Register("debug.GCStats.PauseTotal", debugMetrics.GCStats.PauseTotal) + r.Register("debug.ReadGCStats", debugMetrics.ReadGCStats) +} + +// Allocate an initial slice for gcStats.Pause to avoid allocations during +// normal operation. +func init() { + gcStats.Pause = make([]time.Duration, 11) +} diff --git a/vendor/github.com/rcrowley/go-metrics/ewma.go b/vendor/github.com/rcrowley/go-metrics/ewma.go new file mode 100644 index 00000000000..694a1d03307 --- /dev/null +++ b/vendor/github.com/rcrowley/go-metrics/ewma.go @@ -0,0 +1,118 @@ +package metrics + +import ( + "math" + "sync" + "sync/atomic" +) + +// EWMAs continuously calculate an exponentially-weighted moving average +// based on an outside source of clock ticks. +type EWMA interface { + Rate() float64 + Snapshot() EWMA + Tick() + Update(int64) +} + +// NewEWMA constructs a new EWMA with the given alpha. +func NewEWMA(alpha float64) EWMA { + if UseNilMetrics { + return NilEWMA{} + } + return &StandardEWMA{alpha: alpha} +} + +// NewEWMA1 constructs a new EWMA for a one-minute moving average. +func NewEWMA1() EWMA { + return NewEWMA(1 - math.Exp(-5.0/60.0/1)) +} + +// NewEWMA5 constructs a new EWMA for a five-minute moving average. +func NewEWMA5() EWMA { + return NewEWMA(1 - math.Exp(-5.0/60.0/5)) +} + +// NewEWMA15 constructs a new EWMA for a fifteen-minute moving average. +func NewEWMA15() EWMA { + return NewEWMA(1 - math.Exp(-5.0/60.0/15)) +} + +// EWMASnapshot is a read-only copy of another EWMA. +type EWMASnapshot float64 + +// Rate returns the rate of events per second at the time the snapshot was +// taken. +func (a EWMASnapshot) Rate() float64 { return float64(a) } + +// Snapshot returns the snapshot. +func (a EWMASnapshot) Snapshot() EWMA { return a } + +// Tick panics. +func (EWMASnapshot) Tick() { + panic("Tick called on an EWMASnapshot") +} + +// Update panics. +func (EWMASnapshot) Update(int64) { + panic("Update called on an EWMASnapshot") +} + +// NilEWMA is a no-op EWMA. +type NilEWMA struct{} + +// Rate is a no-op. +func (NilEWMA) Rate() float64 { return 0.0 } + +// Snapshot is a no-op. +func (NilEWMA) Snapshot() EWMA { return NilEWMA{} } + +// Tick is a no-op. +func (NilEWMA) Tick() {} + +// Update is a no-op. +func (NilEWMA) Update(n int64) {} + +// StandardEWMA is the standard implementation of an EWMA and tracks the number +// of uncounted events and processes them on each tick. It uses the +// sync/atomic package to manage uncounted events. +type StandardEWMA struct { + uncounted int64 // /!\ this should be the first member to ensure 64-bit alignment + alpha float64 + rate float64 + init bool + mutex sync.Mutex +} + +// Rate returns the moving average rate of events per second. +func (a *StandardEWMA) Rate() float64 { + a.mutex.Lock() + defer a.mutex.Unlock() + return a.rate * float64(1e9) +} + +// Snapshot returns a read-only copy of the EWMA. +func (a *StandardEWMA) Snapshot() EWMA { + return EWMASnapshot(a.Rate()) +} + +// Tick ticks the clock to update the moving average. It assumes it is called +// every five seconds. +func (a *StandardEWMA) Tick() { + count := atomic.LoadInt64(&a.uncounted) + atomic.AddInt64(&a.uncounted, -count) + instantRate := float64(count) / float64(5e9) + a.mutex.Lock() + defer a.mutex.Unlock() + if a.init { + a.rate += a.alpha * (instantRate - a.rate) + } else { + a.init = true + a.rate = instantRate + } +} + +// Update adds n uncounted events. +func (a *StandardEWMA) Update(n int64) { + atomic.AddInt64(&a.uncounted, n) +} diff --git a/vendor/github.com/rcrowley/go-metrics/exp/exp.go b/vendor/github.com/rcrowley/go-metrics/exp/exp.go new file mode 100644 index 00000000000..11dd3f898a4 --- /dev/null +++ b/vendor/github.com/rcrowley/go-metrics/exp/exp.go @@ -0,0 +1,156 @@ +// Hook go-metrics into expvar +// on any /debug/metrics request, load all vars from the registry into expvar, and execute regular expvar handler +package exp + +import ( + "expvar" + "fmt" + "net/http" + "sync" + + "github.com/rcrowley/go-metrics" +) + +type exp struct { + expvarLock sync.Mutex // expvar panics if you try to register the same var twice, so we must probe it safely + registry metrics.Registry +} + +func (exp *exp) expHandler(w http.ResponseWriter, r *http.Request) { + // load our variables into expvar + exp.syncToExpvar() + + // now just run the official expvar handler code (which is not publicly callable, so pasted inline) + w.Header().Set("Content-Type", "application/json; charset=utf-8") + fmt.Fprintf(w, "{\n") + first := true + expvar.Do(func(kv expvar.KeyValue) { + if !first { + fmt.Fprintf(w, ",\n") + } + first = false + fmt.Fprintf(w, "%q: %s", kv.Key, kv.Value) + }) + fmt.Fprintf(w, "\n}\n") +} + +// Exp will register an expvar powered metrics handler with http.DefaultServeMux on "/debug/vars" +func Exp(r metrics.Registry) { + h := ExpHandler(r) + // this would cause a panic: + // panic: http: multiple registrations for /debug/vars + // http.HandleFunc("/debug/vars", e.expHandler) + // haven't found an elegant way, so just use a different endpoint + http.Handle("/debug/metrics", h) +} + +// ExpHandler will return an expvar powered metrics handler. +func ExpHandler(r metrics.Registry) http.Handler { + e := exp{sync.Mutex{}, r} + return http.HandlerFunc(e.expHandler) +} + +func (exp *exp) getInt(name string) *expvar.Int { + var v *expvar.Int + exp.expvarLock.Lock() + p := expvar.Get(name) + if p != nil { + v = p.(*expvar.Int) + } else { + v = new(expvar.Int) + expvar.Publish(name, v) + } + exp.expvarLock.Unlock() + return v +} + +func (exp *exp) getFloat(name string) *expvar.Float { + var v *expvar.Float + exp.expvarLock.Lock() + p := expvar.Get(name) + if p != nil { + v = p.(*expvar.Float) + } else { + v = new(expvar.Float) + expvar.Publish(name, v) + } + exp.expvarLock.Unlock() + return v +} + +func (exp *exp) publishCounter(name string, metric metrics.Counter) { + v := exp.getInt(name) + v.Set(metric.Count()) +} + +func (exp *exp) publishGauge(name string, metric metrics.Gauge) { + v := exp.getInt(name) + v.Set(metric.Value()) +} +func (exp *exp) publishGaugeFloat64(name string, metric metrics.GaugeFloat64) { + exp.getFloat(name).Set(metric.Value()) +} + +func (exp *exp) publishHistogram(name string, metric metrics.Histogram) { + h := metric.Snapshot() + ps := h.Percentiles([]float64{0.5, 0.75, 0.95, 0.99, 0.999}) + exp.getInt(name + ".count").Set(h.Count()) + exp.getFloat(name + ".min").Set(float64(h.Min())) + exp.getFloat(name + ".max").Set(float64(h.Max())) + exp.getFloat(name + ".mean").Set(float64(h.Mean())) + exp.getFloat(name + ".std-dev").Set(float64(h.StdDev())) + exp.getFloat(name + ".50-percentile").Set(float64(ps[0])) + exp.getFloat(name + ".75-percentile").Set(float64(ps[1])) + exp.getFloat(name + ".95-percentile").Set(float64(ps[2])) + exp.getFloat(name + ".99-percentile").Set(float64(ps[3])) + exp.getFloat(name + ".999-percentile").Set(float64(ps[4])) +} + +func (exp *exp) publishMeter(name string, metric metrics.Meter) { + m := metric.Snapshot() + exp.getInt(name + ".count").Set(m.Count()) + exp.getFloat(name + ".one-minute").Set(float64(m.Rate1())) + exp.getFloat(name + ".five-minute").Set(float64(m.Rate5())) + exp.getFloat(name + ".fifteen-minute").Set(float64((m.Rate15()))) + exp.getFloat(name + ".mean").Set(float64(m.RateMean())) +} + +func (exp *exp) publishTimer(name string, metric metrics.Timer) { + t := metric.Snapshot() + ps := t.Percentiles([]float64{0.5, 0.75, 0.95, 0.99, 0.999}) + exp.getInt(name + ".count").Set(t.Count()) + exp.getFloat(name + ".min").Set(float64(t.Min())) + exp.getFloat(name + ".max").Set(float64(t.Max())) + exp.getFloat(name + ".mean").Set(float64(t.Mean())) + exp.getFloat(name + ".std-dev").Set(float64(t.StdDev())) + exp.getFloat(name + ".50-percentile").Set(float64(ps[0])) + exp.getFloat(name + ".75-percentile").Set(float64(ps[1])) + exp.getFloat(name + ".95-percentile").Set(float64(ps[2])) + exp.getFloat(name + ".99-percentile").Set(float64(ps[3])) + exp.getFloat(name + ".999-percentile").Set(float64(ps[4])) + exp.getFloat(name + ".one-minute").Set(float64(t.Rate1())) + exp.getFloat(name + ".five-minute").Set(float64(t.Rate5())) + exp.getFloat(name + ".fifteen-minute").Set(float64((t.Rate15()))) + exp.getFloat(name + ".mean-rate").Set(float64(t.RateMean())) +} + +func (exp *exp) syncToExpvar() { + exp.registry.Each(func(name string, i interface{}) { + switch i.(type) { + case metrics.Counter: + exp.publishCounter(name, i.(metrics.Counter)) + case metrics.Gauge: + exp.publishGauge(name, i.(metrics.Gauge)) + case metrics.GaugeFloat64: + exp.publishGaugeFloat64(name, i.(metrics.GaugeFloat64)) + case metrics.Histogram: + exp.publishHistogram(name, i.(metrics.Histogram)) + case metrics.Meter: + exp.publishMeter(name, i.(metrics.Meter)) + case metrics.Timer: + exp.publishTimer(name, i.(metrics.Timer)) + default: + panic(fmt.Sprintf("unsupported type for '%s': %T", name, i)) + } + }) +} diff --git a/vendor/github.com/rcrowley/go-metrics/gauge.go b/vendor/github.com/rcrowley/go-metrics/gauge.go new file mode 100644 index 00000000000..d618c455335 --- /dev/null +++ b/vendor/github.com/rcrowley/go-metrics/gauge.go @@ -0,0 +1,120 @@ +package metrics + +import "sync/atomic" + +// Gauges hold an int64 value that can be set arbitrarily. +type Gauge interface { + Snapshot() Gauge + Update(int64) + Value() int64 +} + +// GetOrRegisterGauge returns an existing Gauge or constructs and registers a +// new StandardGauge. +func GetOrRegisterGauge(name string, r Registry) Gauge { + if nil == r { + r = DefaultRegistry + } + return r.GetOrRegister(name, NewGauge).(Gauge) +} + +// NewGauge constructs a new StandardGauge. +func NewGauge() Gauge { + if UseNilMetrics { + return NilGauge{} + } + return &StandardGauge{0} +} + +// NewRegisteredGauge constructs and registers a new StandardGauge. +func NewRegisteredGauge(name string, r Registry) Gauge { + c := NewGauge() + if nil == r { + r = DefaultRegistry + } + r.Register(name, c) + return c +} + +// NewFunctionalGauge constructs a new FunctionalGauge. +func NewFunctionalGauge(f func() int64) Gauge { + if UseNilMetrics { + return NilGauge{} + } + return &FunctionalGauge{value: f} +} + + +// NewRegisteredFunctionalGauge constructs and registers a new StandardGauge. +func NewRegisteredFunctionalGauge(name string, r Registry, f func() int64) Gauge { + c := NewFunctionalGauge(f) + if nil == r { + r = DefaultRegistry + } + r.Register(name, c) + return c +} + +// GaugeSnapshot is a read-only copy of another Gauge. +type GaugeSnapshot int64 + +// Snapshot returns the snapshot. +func (g GaugeSnapshot) Snapshot() Gauge { return g } + +// Update panics. +func (GaugeSnapshot) Update(int64) { + panic("Update called on a GaugeSnapshot") +} + +// Value returns the value at the time the snapshot was taken. +func (g GaugeSnapshot) Value() int64 { return int64(g) } + +// NilGauge is a no-op Gauge. +type NilGauge struct{} + +// Snapshot is a no-op. +func (NilGauge) Snapshot() Gauge { return NilGauge{} } + +// Update is a no-op. +func (NilGauge) Update(v int64) {} + +// Value is a no-op. +func (NilGauge) Value() int64 { return 0 } + +// StandardGauge is the standard implementation of a Gauge and uses the +// sync/atomic package to manage a single int64 value. +type StandardGauge struct { + value int64 +} + +// Snapshot returns a read-only copy of the gauge. +func (g *StandardGauge) Snapshot() Gauge { + return GaugeSnapshot(g.Value()) +} + +// Update updates the gauge's value. +func (g *StandardGauge) Update(v int64) { + atomic.StoreInt64(&g.value, v) +} + +// Value returns the gauge's current value. +func (g *StandardGauge) Value() int64 { + return atomic.LoadInt64(&g.value) +} +// FunctionalGauge returns value from given function +type FunctionalGauge struct { + value func() int64 +} + +// Value returns the gauge's current value. +func (g FunctionalGauge) Value() int64 { + return g.value() +} + +// Snapshot returns the snapshot. +func (g FunctionalGauge) Snapshot() Gauge { return GaugeSnapshot(g.Value()) } + +// Update panics. +func (FunctionalGauge) Update(int64) { + panic("Update called on a FunctionalGauge") +} \ No newline at end of file diff --git a/vendor/github.com/rcrowley/go-metrics/gauge_float64.go b/vendor/github.com/rcrowley/go-metrics/gauge_float64.go new file mode 100644 index 00000000000..6f93920b2c0 --- /dev/null +++ b/vendor/github.com/rcrowley/go-metrics/gauge_float64.go @@ -0,0 +1,127 @@ +package metrics + +import "sync" + +// GaugeFloat64s hold a float64 value that can be set arbitrarily. +type GaugeFloat64 interface { + Snapshot() GaugeFloat64 + Update(float64) + Value() float64 +} + +// GetOrRegisterGaugeFloat64 returns an existing GaugeFloat64 or constructs and registers a +// new StandardGaugeFloat64. +func GetOrRegisterGaugeFloat64(name string, r Registry) GaugeFloat64 { + if nil == r { + r = DefaultRegistry + } + return r.GetOrRegister(name, NewGaugeFloat64()).(GaugeFloat64) +} + +// NewGaugeFloat64 constructs a new StandardGaugeFloat64. +func NewGaugeFloat64() GaugeFloat64 { + if UseNilMetrics { + return NilGaugeFloat64{} + } + return &StandardGaugeFloat64{ + value: 0.0, + } +} + +// NewRegisteredGaugeFloat64 constructs and registers a new StandardGaugeFloat64. +func NewRegisteredGaugeFloat64(name string, r Registry) GaugeFloat64 { + c := NewGaugeFloat64() + if nil == r { + r = DefaultRegistry + } + r.Register(name, c) + return c +} + +// NewFunctionalGauge constructs a new FunctionalGauge. +func NewFunctionalGaugeFloat64(f func() float64) GaugeFloat64 { + if UseNilMetrics { + return NilGaugeFloat64{} + } + return &FunctionalGaugeFloat64{value: f} +} + +// NewRegisteredFunctionalGauge constructs and registers a new StandardGauge. +func NewRegisteredFunctionalGaugeFloat64(name string, r Registry, f func() float64) GaugeFloat64 { + c := NewFunctionalGaugeFloat64(f) + if nil == r { + r = DefaultRegistry + } + r.Register(name, c) + return c +} + +// GaugeFloat64Snapshot is a read-only copy of another GaugeFloat64. +type GaugeFloat64Snapshot float64 + +// Snapshot returns the snapshot. +func (g GaugeFloat64Snapshot) Snapshot() GaugeFloat64 { return g } + +// Update panics. +func (GaugeFloat64Snapshot) Update(float64) { + panic("Update called on a GaugeFloat64Snapshot") +} + +// Value returns the value at the time the snapshot was taken. +func (g GaugeFloat64Snapshot) Value() float64 { return float64(g) } + +// NilGauge is a no-op Gauge. +type NilGaugeFloat64 struct{} + +// Snapshot is a no-op. +func (NilGaugeFloat64) Snapshot() GaugeFloat64 { return NilGaugeFloat64{} } + +// Update is a no-op. +func (NilGaugeFloat64) Update(v float64) {} + +// Value is a no-op. +func (NilGaugeFloat64) Value() float64 { return 0.0 } + +// StandardGaugeFloat64 is the standard implementation of a GaugeFloat64 and uses +// sync.Mutex to manage a single float64 value. +type StandardGaugeFloat64 struct { + mutex sync.Mutex + value float64 +} + +// Snapshot returns a read-only copy of the gauge. +func (g *StandardGaugeFloat64) Snapshot() GaugeFloat64 { + return GaugeFloat64Snapshot(g.Value()) +} + +// Update updates the gauge's value. +func (g *StandardGaugeFloat64) Update(v float64) { + g.mutex.Lock() + defer g.mutex.Unlock() + g.value = v +} + +// Value returns the gauge's current value. +func (g *StandardGaugeFloat64) Value() float64 { + g.mutex.Lock() + defer g.mutex.Unlock() + return g.value +} + +// FunctionalGaugeFloat64 returns value from given function +type FunctionalGaugeFloat64 struct { + value func() float64 +} + +// Value returns the gauge's current value. +func (g FunctionalGaugeFloat64) Value() float64 { + return g.value() +} + +// Snapshot returns the snapshot. +func (g FunctionalGaugeFloat64) Snapshot() GaugeFloat64 { return GaugeFloat64Snapshot(g.Value()) } + +// Update panics. +func (FunctionalGaugeFloat64) Update(float64) { + panic("Update called on a FunctionalGaugeFloat64") +} diff --git a/vendor/github.com/rcrowley/go-metrics/graphite.go b/vendor/github.com/rcrowley/go-metrics/graphite.go new file mode 100644 index 00000000000..abd0a7d2918 --- /dev/null +++ b/vendor/github.com/rcrowley/go-metrics/graphite.go @@ -0,0 +1,113 @@ +package metrics + +import ( + "bufio" + "fmt" + "log" + "net" + "strconv" + "strings" + "time" +) + +// GraphiteConfig provides a container with configuration parameters for +// the Graphite exporter +type GraphiteConfig struct { + Addr *net.TCPAddr // Network address to connect to + Registry Registry // Registry to be exported + FlushInterval time.Duration // Flush interval + DurationUnit time.Duration // Time conversion unit for durations + Prefix string // Prefix to be prepended to metric names + Percentiles []float64 // Percentiles to export from timers and histograms +} + +// Graphite is a blocking exporter function which reports metrics in r +// to a graphite server located at addr, flushing them every d duration +// and prepending metric names with prefix. +func Graphite(r Registry, d time.Duration, prefix string, addr *net.TCPAddr) { + GraphiteWithConfig(GraphiteConfig{ + Addr: addr, + Registry: r, + FlushInterval: d, + DurationUnit: time.Nanosecond, + Prefix: prefix, + Percentiles: []float64{0.5, 0.75, 0.95, 0.99, 0.999}, + }) +} + +// GraphiteWithConfig is a blocking exporter function just like Graphite, +// but it takes a GraphiteConfig instead. +func GraphiteWithConfig(c GraphiteConfig) { + log.Printf("WARNING: This go-metrics client has been DEPRECATED! It has been moved to https://github.com/cyberdelia/go-metrics-graphite and will be removed from rcrowley/go-metrics on August 12th 2015") + for _ = range time.Tick(c.FlushInterval) { + if err := graphite(&c); nil != err { + log.Println(err) + } + } +} + +// GraphiteOnce performs a single submission to Graphite, returning a +// non-nil error on failed connections. This can be used in a loop +// similar to GraphiteWithConfig for custom error handling. +func GraphiteOnce(c GraphiteConfig) error { + log.Printf("WARNING: This go-metrics client has been DEPRECATED! It has been moved to https://github.com/cyberdelia/go-metrics-graphite and will be removed from rcrowley/go-metrics on August 12th 2015") + return graphite(&c) +} + +func graphite(c *GraphiteConfig) error { + now := time.Now().Unix() + du := float64(c.DurationUnit) + conn, err := net.DialTCP("tcp", nil, c.Addr) + if nil != err { + return err + } + defer conn.Close() + w := bufio.NewWriter(conn) + c.Registry.Each(func(name string, i interface{}) { + switch metric := i.(type) { + case Counter: + fmt.Fprintf(w, "%s.%s.count %d %d\n", c.Prefix, name, metric.Count(), now) + case Gauge: + fmt.Fprintf(w, "%s.%s.value %d %d\n", c.Prefix, name, metric.Value(), now) + case GaugeFloat64: + fmt.Fprintf(w, "%s.%s.value %f %d\n", c.Prefix, name, metric.Value(), now) + case Histogram: + h := metric.Snapshot() + ps := h.Percentiles(c.Percentiles) + fmt.Fprintf(w, "%s.%s.count %d %d\n", c.Prefix, name, h.Count(), now) + fmt.Fprintf(w, "%s.%s.min %d %d\n", c.Prefix, name, h.Min(), now) + fmt.Fprintf(w, "%s.%s.max %d %d\n", c.Prefix, name, h.Max(), now) + fmt.Fprintf(w, "%s.%s.mean %.2f %d\n", c.Prefix, name, h.Mean(), now) + fmt.Fprintf(w, "%s.%s.std-dev %.2f %d\n", c.Prefix, name, h.StdDev(), now) + for psIdx, psKey := range c.Percentiles { + key := strings.Replace(strconv.FormatFloat(psKey*100.0, 'f', -1, 64), ".", "", 1) + fmt.Fprintf(w, "%s.%s.%s-percentile %.2f %d\n", c.Prefix, name, key, ps[psIdx], now) + } + case Meter: + m := metric.Snapshot() + fmt.Fprintf(w, "%s.%s.count %d %d\n", c.Prefix, name, m.Count(), now) + fmt.Fprintf(w, "%s.%s.one-minute %.2f %d\n", c.Prefix, name, m.Rate1(), now) + fmt.Fprintf(w, "%s.%s.five-minute %.2f %d\n", c.Prefix, name, m.Rate5(), now) + fmt.Fprintf(w, "%s.%s.fifteen-minute %.2f %d\n", c.Prefix, name, m.Rate15(), now) + fmt.Fprintf(w, "%s.%s.mean %.2f %d\n", c.Prefix, name, m.RateMean(), now) + case Timer: + t := metric.Snapshot() + ps := t.Percentiles(c.Percentiles) + fmt.Fprintf(w, "%s.%s.count %d %d\n", c.Prefix, name, t.Count(), now) + fmt.Fprintf(w, "%s.%s.min %d %d\n", c.Prefix, name, t.Min()/int64(du), now) + fmt.Fprintf(w, "%s.%s.max %d %d\n", c.Prefix, name, t.Max()/int64(du), now) + fmt.Fprintf(w, "%s.%s.mean %.2f %d\n", c.Prefix, name, t.Mean()/du, now) + fmt.Fprintf(w, "%s.%s.std-dev %.2f %d\n", c.Prefix, name, t.StdDev()/du, now) + for psIdx, psKey := range c.Percentiles { + key := strings.Replace(strconv.FormatFloat(psKey*100.0, 'f', -1, 64), ".", "", 1) + fmt.Fprintf(w, "%s.%s.%s-percentile %.2f %d\n", c.Prefix, name, key, ps[psIdx], now) + } + fmt.Fprintf(w, "%s.%s.one-minute %.2f %d\n", c.Prefix, name, t.Rate1(), now) + fmt.Fprintf(w, "%s.%s.five-minute %.2f %d\n", c.Prefix, name, t.Rate5(), now) + fmt.Fprintf(w, "%s.%s.fifteen-minute %.2f %d\n", c.Prefix, name, t.Rate15(), now) + fmt.Fprintf(w, "%s.%s.mean-rate %.2f %d\n", c.Prefix, name, t.RateMean(), now) + } + w.Flush() + }) + return nil +} diff --git a/vendor/github.com/rcrowley/go-metrics/healthcheck.go b/vendor/github.com/rcrowley/go-metrics/healthcheck.go new file mode 100644 index 00000000000..445131caee5 --- /dev/null +++ b/vendor/github.com/rcrowley/go-metrics/healthcheck.go @@ -0,0 +1,61 @@ +package metrics + +// Healthchecks hold an error value describing an arbitrary up/down status. +type Healthcheck interface { + Check() + Error() error + Healthy() + Unhealthy(error) +} + +// NewHealthcheck constructs a new Healthcheck which will use the given +// function to update its status. +func NewHealthcheck(f func(Healthcheck)) Healthcheck { + if UseNilMetrics { + return NilHealthcheck{} + } + return &StandardHealthcheck{nil, f} +} + +// NilHealthcheck is a no-op. +type NilHealthcheck struct{} + +// Check is a no-op. +func (NilHealthcheck) Check() {} + +// Error is a no-op. +func (NilHealthcheck) Error() error { return nil } + +// Healthy is a no-op. +func (NilHealthcheck) Healthy() {} + +// Unhealthy is a no-op. +func (NilHealthcheck) Unhealthy(error) {} + +// StandardHealthcheck is the standard implementation of a Healthcheck and +// stores the status and a function to call to update the status. +type StandardHealthcheck struct { + err error + f func(Healthcheck) +} + +// Check runs the healthcheck function to update the healthcheck's status. +func (h *StandardHealthcheck) Check() { + h.f(h) +} + +// Error returns the healthcheck's status, which will be nil if it is healthy. +func (h *StandardHealthcheck) Error() error { + return h.err +} + +// Healthy marks the healthcheck as healthy. +func (h *StandardHealthcheck) Healthy() { + h.err = nil +} + +// Unhealthy marks the healthcheck as unhealthy. The error is stored and +// may be retrieved by the Error method. +func (h *StandardHealthcheck) Unhealthy(err error) { + h.err = err +} diff --git a/vendor/github.com/rcrowley/go-metrics/histogram.go b/vendor/github.com/rcrowley/go-metrics/histogram.go new file mode 100644 index 00000000000..dbc837fe4d9 --- /dev/null +++ b/vendor/github.com/rcrowley/go-metrics/histogram.go @@ -0,0 +1,202 @@ +package metrics + +// Histograms calculate distribution statistics from a series of int64 values. +type Histogram interface { + Clear() + Count() int64 + Max() int64 + Mean() float64 + Min() int64 + Percentile(float64) float64 + Percentiles([]float64) []float64 + Sample() Sample + Snapshot() Histogram + StdDev() float64 + Sum() int64 + Update(int64) + Variance() float64 +} + +// GetOrRegisterHistogram returns an existing Histogram or constructs and +// registers a new StandardHistogram. +func GetOrRegisterHistogram(name string, r Registry, s Sample) Histogram { + if nil == r { + r = DefaultRegistry + } + return r.GetOrRegister(name, func() Histogram { return NewHistogram(s) }).(Histogram) +} + +// NewHistogram constructs a new StandardHistogram from a Sample. +func NewHistogram(s Sample) Histogram { + if UseNilMetrics { + return NilHistogram{} + } + return &StandardHistogram{sample: s} +} + +// NewRegisteredHistogram constructs and registers a new StandardHistogram from +// a Sample. +func NewRegisteredHistogram(name string, r Registry, s Sample) Histogram { + c := NewHistogram(s) + if nil == r { + r = DefaultRegistry + } + r.Register(name, c) + return c +} + +// HistogramSnapshot is a read-only copy of another Histogram. +type HistogramSnapshot struct { + sample *SampleSnapshot +} + +// Clear panics. +func (*HistogramSnapshot) Clear() { + panic("Clear called on a HistogramSnapshot") +} + +// Count returns the number of samples recorded at the time the snapshot was +// taken. +func (h *HistogramSnapshot) Count() int64 { return h.sample.Count() } + +// Max returns the maximum value in the sample at the time the snapshot was +// taken. +func (h *HistogramSnapshot) Max() int64 { return h.sample.Max() } + +// Mean returns the mean of the values in the sample at the time the snapshot +// was taken. +func (h *HistogramSnapshot) Mean() float64 { return h.sample.Mean() } + +// Min returns the minimum value in the sample at the time the snapshot was +// taken. +func (h *HistogramSnapshot) Min() int64 { return h.sample.Min() } + +// Percentile returns an arbitrary percentile of values in the sample at the +// time the snapshot was taken. +func (h *HistogramSnapshot) Percentile(p float64) float64 { + return h.sample.Percentile(p) +} + +// Percentiles returns a slice of arbitrary percentiles of values in the sample +// at the time the snapshot was taken. +func (h *HistogramSnapshot) Percentiles(ps []float64) []float64 { + return h.sample.Percentiles(ps) +} + +// Sample returns the Sample underlying the histogram. +func (h *HistogramSnapshot) Sample() Sample { return h.sample } + +// Snapshot returns the snapshot. +func (h *HistogramSnapshot) Snapshot() Histogram { return h } + +// StdDev returns the standard deviation of the values in the sample at the +// time the snapshot was taken. +func (h *HistogramSnapshot) StdDev() float64 { return h.sample.StdDev() } + +// Sum returns the sum in the sample at the time the snapshot was taken. +func (h *HistogramSnapshot) Sum() int64 { return h.sample.Sum() } + +// Update panics. +func (*HistogramSnapshot) Update(int64) { + panic("Update called on a HistogramSnapshot") +} + +// Variance returns the variance of inputs at the time the snapshot was taken. +func (h *HistogramSnapshot) Variance() float64 { return h.sample.Variance() } + +// NilHistogram is a no-op Histogram. +type NilHistogram struct{} + +// Clear is a no-op. +func (NilHistogram) Clear() {} + +// Count is a no-op. +func (NilHistogram) Count() int64 { return 0 } + +// Max is a no-op. +func (NilHistogram) Max() int64 { return 0 } + +// Mean is a no-op. +func (NilHistogram) Mean() float64 { return 0.0 } + +// Min is a no-op. +func (NilHistogram) Min() int64 { return 0 } + +// Percentile is a no-op. +func (NilHistogram) Percentile(p float64) float64 { return 0.0 } + +// Percentiles is a no-op. +func (NilHistogram) Percentiles(ps []float64) []float64 { + return make([]float64, len(ps)) +} + +// Sample is a no-op. +func (NilHistogram) Sample() Sample { return NilSample{} } + +// Snapshot is a no-op. +func (NilHistogram) Snapshot() Histogram { return NilHistogram{} } + +// StdDev is a no-op. +func (NilHistogram) StdDev() float64 { return 0.0 } + +// Sum is a no-op. +func (NilHistogram) Sum() int64 { return 0 } + +// Update is a no-op. +func (NilHistogram) Update(v int64) {} + +// Variance is a no-op. +func (NilHistogram) Variance() float64 { return 0.0 } + +// StandardHistogram is the standard implementation of a Histogram and uses a +// Sample to bound its memory use. +type StandardHistogram struct { + sample Sample +} + +// Clear clears the histogram and its sample. +func (h *StandardHistogram) Clear() { h.sample.Clear() } + +// Count returns the number of samples recorded since the histogram was last +// cleared. +func (h *StandardHistogram) Count() int64 { return h.sample.Count() } + +// Max returns the maximum value in the sample. +func (h *StandardHistogram) Max() int64 { return h.sample.Max() } + +// Mean returns the mean of the values in the sample. +func (h *StandardHistogram) Mean() float64 { return h.sample.Mean() } + +// Min returns the minimum value in the sample. +func (h *StandardHistogram) Min() int64 { return h.sample.Min() } + +// Percentile returns an arbitrary percentile of the values in the sample. +func (h *StandardHistogram) Percentile(p float64) float64 { + return h.sample.Percentile(p) +} + +// Percentiles returns a slice of arbitrary percentiles of the values in the +// sample. +func (h *StandardHistogram) Percentiles(ps []float64) []float64 { + return h.sample.Percentiles(ps) +} + +// Sample returns the Sample underlying the histogram. +func (h *StandardHistogram) Sample() Sample { return h.sample } + +// Snapshot returns a read-only copy of the histogram. +func (h *StandardHistogram) Snapshot() Histogram { + return &HistogramSnapshot{sample: h.sample.Snapshot().(*SampleSnapshot)} +} + +// StdDev returns the standard deviation of the values in the sample. +func (h *StandardHistogram) StdDev() float64 { return h.sample.StdDev() } + +// Sum returns the sum in the sample. +func (h *StandardHistogram) Sum() int64 { return h.sample.Sum() } + +// Update samples a new value. +func (h *StandardHistogram) Update(v int64) { h.sample.Update(v) } + +// Variance returns the variance of the values in the sample. +func (h *StandardHistogram) Variance() float64 { return h.sample.Variance() } diff --git a/vendor/github.com/rcrowley/go-metrics/json.go b/vendor/github.com/rcrowley/go-metrics/json.go new file mode 100644 index 00000000000..2fdcbcfbf1d --- /dev/null +++ b/vendor/github.com/rcrowley/go-metrics/json.go @@ -0,0 +1,87 @@ +package metrics + +import ( + "encoding/json" + "io" + "time" +) + +// MarshalJSON returns a byte slice containing a JSON representation of all +// the metrics in the Registry. +func (r *StandardRegistry) MarshalJSON() ([]byte, error) { + data := make(map[string]map[string]interface{}) + r.Each(func(name string, i interface{}) { + values := make(map[string]interface{}) + switch metric := i.(type) { + case Counter: + values["count"] = metric.Count() + case Gauge: + values["value"] = metric.Value() + case GaugeFloat64: + values["value"] = metric.Value() + case Healthcheck: + values["error"] = nil + metric.Check() + if err := metric.Error(); nil != err { + values["error"] = metric.Error().Error() + } + case Histogram: + h := metric.Snapshot() + ps := h.Percentiles([]float64{0.5, 0.75, 0.95, 0.99, 0.999}) + values["count"] = h.Count() + values["min"] = h.Min() + values["max"] = h.Max() + values["mean"] = h.Mean() + values["stddev"] = h.StdDev() + values["median"] = ps[0] + values["75%"] = ps[1] + values["95%"] = ps[2] + values["99%"] = ps[3] + values["99.9%"] = ps[4] + case Meter: + m := metric.Snapshot() + values["count"] = m.Count() + values["1m.rate"] = m.Rate1() + values["5m.rate"] = m.Rate5() + values["15m.rate"] = m.Rate15() + values["mean.rate"] = m.RateMean() + case Timer: + t := metric.Snapshot() + ps := t.Percentiles([]float64{0.5, 0.75, 0.95, 0.99, 0.999}) + values["count"] = t.Count() + values["min"] = t.Min() + values["max"] = t.Max() + values["mean"] = t.Mean() + values["stddev"] = t.StdDev() + values["median"] = ps[0] + values["75%"] = ps[1] + values["95%"] = ps[2] + values["99%"] = ps[3] + values["99.9%"] = ps[4] + values["1m.rate"] = t.Rate1() + values["5m.rate"] = t.Rate5() + values["15m.rate"] = t.Rate15() + values["mean.rate"] = t.RateMean() + } + data[name] = values + }) + return json.Marshal(data) +} + +// WriteJSON writes metrics from the given registry periodically to the +// specified io.Writer as JSON. +func WriteJSON(r Registry, d time.Duration, w io.Writer) { + for _ = range time.Tick(d) { + WriteJSONOnce(r, w) + } +} + +// WriteJSONOnce writes metrics from the given registry to the specified +// io.Writer as JSON. +func WriteJSONOnce(r Registry, w io.Writer) { + json.NewEncoder(w).Encode(r) +} + +func (p *PrefixedRegistry) MarshalJSON() ([]byte, error) { + return json.Marshal(p.underlying) +} diff --git a/vendor/github.com/rcrowley/go-metrics/librato/client.go b/vendor/github.com/rcrowley/go-metrics/librato/client.go new file mode 100644 index 00000000000..8c0c850e386 --- /dev/null +++ b/vendor/github.com/rcrowley/go-metrics/librato/client.go @@ -0,0 +1,102 @@ +package librato + +import ( + "bytes" + "encoding/json" + "fmt" + "io/ioutil" + "net/http" +) + +const Operations = "operations" +const OperationsShort = "ops" + +type LibratoClient struct { + Email, Token string +} + +// property strings +const ( + // display attributes + Color = "color" + DisplayMax = "display_max" + DisplayMin = "display_min" + DisplayUnitsLong = "display_units_long" + DisplayUnitsShort = "display_units_short" + DisplayStacked = "display_stacked" + DisplayTransform = "display_transform" + // special gauge display attributes + SummarizeFunction = "summarize_function" + Aggregate = "aggregate" + + // metric keys + Name = "name" + Period = "period" + Description = "description" + DisplayName = "display_name" + Attributes = "attributes" + + // measurement keys + MeasureTime = "measure_time" + Source = "source" + Value = "value" + + // special gauge keys + Count = "count" + Sum = "sum" + Max = "max" + Min = "min" + SumSquares = "sum_squares" + + // batch keys + Counters = "counters" + Gauges = "gauges" + + MetricsPostUrl = "https://metrics-api.librato.com/v1/metrics" +) + +type Measurement map[string]interface{} +type Metric map[string]interface{} + +type Batch struct { + Gauges []Measurement `json:"gauges,omitempty"` + Counters []Measurement `json:"counters,omitempty"` + MeasureTime int64 `json:"measure_time"` + Source string `json:"source"` +} + +func (self *LibratoClient) PostMetrics(batch Batch) (err error) { + var ( + js []byte + req *http.Request + resp *http.Response + ) + + if len(batch.Counters) == 0 && len(batch.Gauges) == 0 { + return nil + } + + if js, err = json.Marshal(batch); err != nil { + return + } + + if req, err = http.NewRequest("POST", MetricsPostUrl, bytes.NewBuffer(js)); err != nil { + return + } + + req.Header.Set("Content-Type", "application/json") + req.SetBasicAuth(self.Email, self.Token) + + if resp, err = http.DefaultClient.Do(req); err != nil { + return + } + + if resp.StatusCode != http.StatusOK { + var body []byte + if body, err = ioutil.ReadAll(resp.Body); err != nil { + body = []byte(fmt.Sprintf("(could not fetch response body for error: %s)", err)) + } + err = fmt.Errorf("Unable to post to Librato: %d %s %s", resp.StatusCode, resp.Status, string(body)) + } + return +} diff --git a/vendor/github.com/rcrowley/go-metrics/librato/librato.go b/vendor/github.com/rcrowley/go-metrics/librato/librato.go new file mode 100644 index 00000000000..d7c0574684c --- /dev/null +++ b/vendor/github.com/rcrowley/go-metrics/librato/librato.go @@ -0,0 +1,235 @@ +package librato + +import ( + "fmt" + "log" + "math" + "regexp" + "time" + + "github.com/rcrowley/go-metrics" +) + +// a regexp for extracting the unit from time.Duration.String +var unitRegexp = regexp.MustCompile("[^\\d]+$") + +// a helper that turns a time.Duration into librato display attributes for timer metrics +func translateTimerAttributes(d time.Duration) (attrs map[string]interface{}) { + attrs = make(map[string]interface{}) + attrs[DisplayTransform] = fmt.Sprintf("x/%d", int64(d)) + attrs[DisplayUnitsShort] = string(unitRegexp.Find([]byte(d.String()))) + return +} + +type Reporter struct { + Email, Token string + Namespace string + Source string + Interval time.Duration + Registry metrics.Registry + Percentiles []float64 // percentiles to report on histogram metrics + TimerAttributes map[string]interface{} // units in which timers will be displayed + intervalSec int64 +} + +func NewReporter(r metrics.Registry, d time.Duration, e string, t string, s string, p []float64, u time.Duration) *Reporter { + return &Reporter{e, t, "", s, d, r, p, translateTimerAttributes(u), int64(d / time.Second)} +} + +func Librato(r metrics.Registry, d time.Duration, e string, t string, s string, p []float64, u time.Duration) { + NewReporter(r, d, e, t, s, p, u).Run() +} + +func (self *Reporter) Run() { + log.Printf("WARNING: This client has been DEPRECATED! It has been moved to https://github.com/mihasya/go-metrics-librato and will be removed from rcrowley/go-metrics on August 5th 2015") + ticker := time.Tick(self.Interval) + metricsApi := &LibratoClient{self.Email, self.Token} + for now := range ticker { + var metrics Batch + var err error + if metrics, err = self.BuildRequest(now, self.Registry); err != nil { + log.Printf("ERROR constructing librato request body %s", err) + continue + } + if err := metricsApi.PostMetrics(metrics); err != nil { + log.Printf("ERROR sending metrics to librato %s", err) + continue + } + } +} + +// calculate sum of squares from data provided by metrics.Histogram +// see http://en.wikipedia.org/wiki/Standard_deviation#Rapid_calculation_methods +func sumSquares(s metrics.Sample) float64 { + count := float64(s.Count()) + sumSquared := math.Pow(count*s.Mean(), 2) + sumSquares := math.Pow(count*s.StdDev(), 2) + sumSquared/count + if math.IsNaN(sumSquares) { + return 0.0 + } + return sumSquares +} +func sumSquaresTimer(t metrics.Timer) float64 { + count := float64(t.Count()) + sumSquared := math.Pow(count*t.Mean(), 2) + sumSquares := math.Pow(count*t.StdDev(), 2) + sumSquared/count + if math.IsNaN(sumSquares) { + return 0.0 + } + return sumSquares +} + +func (self *Reporter) BuildRequest(now time.Time, r metrics.Registry) (snapshot Batch, err error) { + snapshot = Batch{ + // coerce timestamps to a stepping fn so that they line up in Librato graphs + MeasureTime: (now.Unix() / self.intervalSec) * self.intervalSec, + Source: self.Source, + } + snapshot.Gauges = make([]Measurement, 0) + snapshot.Counters = make([]Measurement, 0) + histogramGaugeCount := 1 + len(self.Percentiles) + r.Each(func(name string, metric interface{}) { + if self.Namespace != "" { + name = fmt.Sprintf("%s.%s", self.Namespace, name) + } + measurement := Measurement{} + measurement[Period] = self.Interval.Seconds() + switch m := metric.(type) { + case metrics.Counter: + if m.Count() > 0 { + measurement[Name] = fmt.Sprintf("%s.%s", name, "count") + measurement[Value] = float64(m.Count()) + measurement[Attributes] = map[string]interface{}{ + DisplayUnitsLong: Operations, + DisplayUnitsShort: OperationsShort, + DisplayMin: "0", + } + snapshot.Counters = append(snapshot.Counters, measurement) + } + case metrics.Gauge: + measurement[Name] = name + measurement[Value] = float64(m.Value()) + snapshot.Gauges = append(snapshot.Gauges, measurement) + case metrics.GaugeFloat64: + measurement[Name] = name + measurement[Value] = float64(m.Value()) + snapshot.Gauges = append(snapshot.Gauges, measurement) + case metrics.Histogram: + if m.Count() > 0 { + gauges := make([]Measurement, histogramGaugeCount, histogramGaugeCount) + s := m.Sample() + measurement[Name] = fmt.Sprintf("%s.%s", name, "hist") + measurement[Count] = uint64(s.Count()) + measurement[Max] = float64(s.Max()) + measurement[Min] = float64(s.Min()) + measurement[Sum] = float64(s.Sum()) + measurement[SumSquares] = sumSquares(s) + gauges[0] = measurement + for i, p := range self.Percentiles { + gauges[i+1] = Measurement{ + Name: fmt.Sprintf("%s.%.2f", measurement[Name], p), + Value: s.Percentile(p), + Period: measurement[Period], + } + } + snapshot.Gauges = append(snapshot.Gauges, gauges...) + } + case metrics.Meter: + measurement[Name] = name + measurement[Value] = float64(m.Count()) + snapshot.Counters = append(snapshot.Counters, measurement) + snapshot.Gauges = append(snapshot.Gauges, + Measurement{ + Name: fmt.Sprintf("%s.%s", name, "1min"), + Value: m.Rate1(), + Period: int64(self.Interval.Seconds()), + Attributes: map[string]interface{}{ + DisplayUnitsLong: Operations, + DisplayUnitsShort: OperationsShort, + DisplayMin: "0", + }, + }, + Measurement{ + Name: fmt.Sprintf("%s.%s", name, "5min"), + Value: m.Rate5(), + Period: int64(self.Interval.Seconds()), + Attributes: map[string]interface{}{ + DisplayUnitsLong: Operations, + DisplayUnitsShort: OperationsShort, + DisplayMin: "0", + }, + }, + Measurement{ + Name: fmt.Sprintf("%s.%s", name, "15min"), + Value: m.Rate15(), + Period: int64(self.Interval.Seconds()), + Attributes: map[string]interface{}{ + DisplayUnitsLong: Operations, + DisplayUnitsShort: OperationsShort, + DisplayMin: "0", + }, + }, + ) + case metrics.Timer: + measurement[Name] = name + measurement[Value] = float64(m.Count()) + snapshot.Counters = append(snapshot.Counters, measurement) + if m.Count() > 0 { + libratoName := fmt.Sprintf("%s.%s", name, "timer.mean") + gauges := make([]Measurement, histogramGaugeCount, histogramGaugeCount) + gauges[0] = Measurement{ + Name: libratoName, + Count: uint64(m.Count()), + Sum: m.Mean() * float64(m.Count()), + Max: float64(m.Max()), + Min: float64(m.Min()), + SumSquares: sumSquaresTimer(m), + Period: int64(self.Interval.Seconds()), + Attributes: self.TimerAttributes, + } + for i, p := range self.Percentiles { + gauges[i+1] = Measurement{ + Name: fmt.Sprintf("%s.timer.%2.0f", name, p*100), + Value: m.Percentile(p), + Period: int64(self.Interval.Seconds()), + Attributes: self.TimerAttributes, + } + } + snapshot.Gauges = append(snapshot.Gauges, gauges...) + snapshot.Gauges = append(snapshot.Gauges, + Measurement{ + Name: fmt.Sprintf("%s.%s", name, "rate.1min"), + Value: m.Rate1(), + Period: int64(self.Interval.Seconds()), + Attributes: map[string]interface{}{ + DisplayUnitsLong: Operations, + DisplayUnitsShort: OperationsShort, + DisplayMin: "0", + }, + }, + Measurement{ + Name: fmt.Sprintf("%s.%s", name, "rate.5min"), + Value: m.Rate5(), + Period: int64(self.Interval.Seconds()), + Attributes: map[string]interface{}{ + DisplayUnitsLong: Operations, + DisplayUnitsShort: OperationsShort, + DisplayMin: "0", + }, + }, + Measurement{ + Name: fmt.Sprintf("%s.%s", name, "rate.15min"), + Value: m.Rate15(), + Period: int64(self.Interval.Seconds()), + Attributes: map[string]interface{}{ + DisplayUnitsLong: Operations, + DisplayUnitsShort: OperationsShort, + DisplayMin: "0", + }, + }, + ) + } + } + }) + return +} diff --git a/vendor/github.com/rcrowley/go-metrics/log.go b/vendor/github.com/rcrowley/go-metrics/log.go new file mode 100644 index 00000000000..f8074c04576 --- /dev/null +++ b/vendor/github.com/rcrowley/go-metrics/log.go @@ -0,0 +1,80 @@ +package metrics + +import ( + "time" +) + +type Logger interface { + Printf(format string, v ...interface{}) +} + +func Log(r Registry, freq time.Duration, l Logger) { + LogScaled(r, freq, time.Nanosecond, l) +} + +// Output each metric in the given registry periodically using the given +// logger. Print timings in `scale` units (eg time.Millisecond) rather than nanos. +func LogScaled(r Registry, freq time.Duration, scale time.Duration, l Logger) { + du := float64(scale) + duSuffix := scale.String()[1:] + + for _ = range time.Tick(freq) { + r.Each(func(name string, i interface{}) { + switch metric := i.(type) { + case Counter: + l.Printf("counter %s\n", name) + l.Printf(" count: %9d\n", metric.Count()) + case Gauge: + l.Printf("gauge %s\n", name) + l.Printf(" value: %9d\n", metric.Value()) + case GaugeFloat64: + l.Printf("gauge %s\n", name) + l.Printf(" value: %f\n", metric.Value()) + case Healthcheck: + metric.Check() + l.Printf("healthcheck %s\n", name) + l.Printf(" error: %v\n", metric.Error()) + case Histogram: + h := metric.Snapshot() + ps := h.Percentiles([]float64{0.5, 0.75, 0.95, 0.99, 0.999}) + l.Printf("histogram %s\n", name) + l.Printf(" count: %9d\n", h.Count()) + l.Printf(" min: %9d\n", h.Min()) + l.Printf(" max: %9d\n", h.Max()) + l.Printf(" mean: %12.2f\n", h.Mean()) + l.Printf(" stddev: %12.2f\n", h.StdDev()) + l.Printf(" median: %12.2f\n", ps[0]) + l.Printf(" 75%%: %12.2f\n", ps[1]) + l.Printf(" 95%%: %12.2f\n", ps[2]) + l.Printf(" 99%%: %12.2f\n", ps[3]) + l.Printf(" 99.9%%: %12.2f\n", ps[4]) + case Meter: + m := metric.Snapshot() + l.Printf("meter %s\n", name) + l.Printf(" count: %9d\n", m.Count()) + l.Printf(" 1-min rate: %12.2f\n", m.Rate1()) + l.Printf(" 5-min rate: %12.2f\n", m.Rate5()) + l.Printf(" 15-min rate: %12.2f\n", m.Rate15()) + l.Printf(" mean rate: %12.2f\n", m.RateMean()) + case Timer: + t := metric.Snapshot() + ps := t.Percentiles([]float64{0.5, 0.75, 0.95, 0.99, 0.999}) + l.Printf("timer %s\n", name) + l.Printf(" count: %9d\n", t.Count()) + l.Printf(" min: %12.2f%s\n", float64(t.Min())/du, duSuffix) + l.Printf(" max: %12.2f%s\n", float64(t.Max())/du, duSuffix) + l.Printf(" mean: %12.2f%s\n", t.Mean()/du, duSuffix) + l.Printf(" stddev: %12.2f%s\n", t.StdDev()/du, duSuffix) + l.Printf(" median: %12.2f%s\n", ps[0]/du, duSuffix) + l.Printf(" 75%%: %12.2f%s\n", ps[1]/du, duSuffix) + l.Printf(" 95%%: %12.2f%s\n", ps[2]/du, duSuffix) + l.Printf(" 99%%: %12.2f%s\n", ps[3]/du, duSuffix) + l.Printf(" 99.9%%: %12.2f%s\n", ps[4]/du, duSuffix) + l.Printf(" 1-min rate: %12.2f\n", t.Rate1()) + l.Printf(" 5-min rate: %12.2f\n", t.Rate5()) + l.Printf(" 15-min rate: %12.2f\n", t.Rate15()) + l.Printf(" mean rate: %12.2f\n", t.RateMean()) + } + }) + } +} diff --git a/vendor/github.com/rcrowley/go-metrics/memory.md b/vendor/github.com/rcrowley/go-metrics/memory.md new file mode 100644 index 00000000000..47454f54b64 --- /dev/null +++ b/vendor/github.com/rcrowley/go-metrics/memory.md @@ -0,0 +1,285 @@ +Memory usage +============ + +(Highly unscientific.) + +Command used to gather static memory usage: + +```sh +grep ^Vm "/proc/$(ps fax | grep [m]etrics-bench | awk '{print $1}')/status" +``` + +Program used to gather baseline memory usage: + +```go +package main + +import "time" + +func main() { + time.Sleep(600e9) +} +``` + +Baseline +-------- + +``` +VmPeak: 42604 kB +VmSize: 42604 kB +VmLck: 0 kB +VmHWM: 1120 kB +VmRSS: 1120 kB +VmData: 35460 kB +VmStk: 136 kB +VmExe: 1020 kB +VmLib: 1848 kB +VmPTE: 36 kB +VmSwap: 0 kB +``` + +Program used to gather metric memory usage (with other metrics being similar): + +```go +package main + +import ( + "fmt" + "metrics" + "time" +) + +func main() { + fmt.Sprintf("foo") + metrics.NewRegistry() + time.Sleep(600e9) +} +``` + +1000 counters registered +------------------------ + +``` +VmPeak: 44016 kB +VmSize: 44016 kB +VmLck: 0 kB +VmHWM: 1928 kB +VmRSS: 1928 kB +VmData: 36868 kB +VmStk: 136 kB +VmExe: 1024 kB +VmLib: 1848 kB +VmPTE: 40 kB +VmSwap: 0 kB +``` + +**1.412 kB virtual, TODO 0.808 kB resident per counter.** + +100000 counters registered +-------------------------- + +``` +VmPeak: 55024 kB +VmSize: 55024 kB +VmLck: 0 kB +VmHWM: 12440 kB +VmRSS: 12440 kB +VmData: 47876 kB +VmStk: 136 kB +VmExe: 1024 kB +VmLib: 1848 kB +VmPTE: 64 kB +VmSwap: 0 kB +``` + +**0.1242 kB virtual, 0.1132 kB resident per counter.** + +1000 gauges registered +---------------------- + +``` +VmPeak: 44012 kB +VmSize: 44012 kB +VmLck: 0 kB +VmHWM: 1928 kB +VmRSS: 1928 kB +VmData: 36868 kB +VmStk: 136 kB +VmExe: 1020 kB +VmLib: 1848 kB +VmPTE: 40 kB +VmSwap: 0 kB +``` + +**1.408 kB virtual, 0.808 kB resident per counter.** + +100000 gauges registered +------------------------ + +``` +VmPeak: 55020 kB +VmSize: 55020 kB +VmLck: 0 kB +VmHWM: 12432 kB +VmRSS: 12432 kB +VmData: 47876 kB +VmStk: 136 kB +VmExe: 1020 kB +VmLib: 1848 kB +VmPTE: 60 kB +VmSwap: 0 kB +``` + +**0.12416 kB virtual, 0.11312 resident per gauge.** + +1000 histograms with a uniform sample size of 1028 +-------------------------------------------------- + +``` +VmPeak: 72272 kB +VmSize: 72272 kB +VmLck: 0 kB +VmHWM: 16204 kB +VmRSS: 16204 kB +VmData: 65100 kB +VmStk: 136 kB +VmExe: 1048 kB +VmLib: 1848 kB +VmPTE: 80 kB +VmSwap: 0 kB +``` + +**29.668 kB virtual, TODO 15.084 resident per histogram.** + +10000 histograms with a uniform sample size of 1028 +--------------------------------------------------- + +``` +VmPeak: 256912 kB +VmSize: 256912 kB +VmLck: 0 kB +VmHWM: 146204 kB +VmRSS: 146204 kB +VmData: 249740 kB +VmStk: 136 kB +VmExe: 1048 kB +VmLib: 1848 kB +VmPTE: 448 kB +VmSwap: 0 kB +``` + +**21.4308 kB virtual, 14.5084 kB resident per histogram.** + +50000 histograms with a uniform sample size of 1028 +--------------------------------------------------- + +``` +VmPeak: 908112 kB +VmSize: 908112 kB +VmLck: 0 kB +VmHWM: 645832 kB +VmRSS: 645588 kB +VmData: 900940 kB +VmStk: 136 kB +VmExe: 1048 kB +VmLib: 1848 kB +VmPTE: 1716 kB +VmSwap: 1544 kB +``` + +**17.31016 kB virtual, 12.88936 kB resident per histogram.** + +1000 histograms with an exponentially-decaying sample size of 1028 and alpha of 0.015 +------------------------------------------------------------------------------------- + +``` +VmPeak: 62480 kB +VmSize: 62480 kB +VmLck: 0 kB +VmHWM: 11572 kB +VmRSS: 11572 kB +VmData: 55308 kB +VmStk: 136 kB +VmExe: 1048 kB +VmLib: 1848 kB +VmPTE: 64 kB +VmSwap: 0 kB +``` + +**19.876 kB virtual, 10.452 kB resident per histogram.** + +10000 histograms with an exponentially-decaying sample size of 1028 and alpha of 0.015 +-------------------------------------------------------------------------------------- + +``` +VmPeak: 153296 kB +VmSize: 153296 kB +VmLck: 0 kB +VmHWM: 101176 kB +VmRSS: 101176 kB +VmData: 146124 kB +VmStk: 136 kB +VmExe: 1048 kB +VmLib: 1848 kB +VmPTE: 240 kB +VmSwap: 0 kB +``` + +**11.0692 kB virtual, 10.0056 kB resident per histogram.** + +50000 histograms with an exponentially-decaying sample size of 1028 and alpha of 0.015 +-------------------------------------------------------------------------------------- + +``` +VmPeak: 557264 kB +VmSize: 557264 kB +VmLck: 0 kB +VmHWM: 501056 kB +VmRSS: 501056 kB +VmData: 550092 kB +VmStk: 136 kB +VmExe: 1048 kB +VmLib: 1848 kB +VmPTE: 1032 kB +VmSwap: 0 kB +``` + +**10.2932 kB virtual, 9.99872 kB resident per histogram.** + +1000 meters +----------- + +``` +VmPeak: 74504 kB +VmSize: 74504 kB +VmLck: 0 kB +VmHWM: 24124 kB +VmRSS: 24124 kB +VmData: 67340 kB +VmStk: 136 kB +VmExe: 1040 kB +VmLib: 1848 kB +VmPTE: 92 kB +VmSwap: 0 kB +``` + +**31.9 kB virtual, 23.004 kB resident per meter.** + +10000 meters +------------ + +``` +VmPeak: 278920 kB +VmSize: 278920 kB +VmLck: 0 kB +VmHWM: 227300 kB +VmRSS: 227300 kB +VmData: 271756 kB +VmStk: 136 kB +VmExe: 1040 kB +VmLib: 1848 kB +VmPTE: 488 kB +VmSwap: 0 kB +``` + +**23.6316 kB virtual, 22.618 kB resident per meter.** diff --git a/vendor/github.com/rcrowley/go-metrics/meter.go b/vendor/github.com/rcrowley/go-metrics/meter.go new file mode 100644 index 00000000000..0389ab0b8f6 --- /dev/null +++ b/vendor/github.com/rcrowley/go-metrics/meter.go @@ -0,0 +1,233 @@ +package metrics + +import ( + "sync" + "time" +) + +// Meters count events to produce exponentially-weighted moving average rates +// at one-, five-, and fifteen-minutes and a mean rate. +type Meter interface { + Count() int64 + Mark(int64) + Rate1() float64 + Rate5() float64 + Rate15() float64 + RateMean() float64 + Snapshot() Meter +} + +// GetOrRegisterMeter returns an existing Meter or constructs and registers a +// new StandardMeter. +func GetOrRegisterMeter(name string, r Registry) Meter { + if nil == r { + r = DefaultRegistry + } + return r.GetOrRegister(name, NewMeter).(Meter) +} + +// NewMeter constructs a new StandardMeter and launches a goroutine. +func NewMeter() Meter { + if UseNilMetrics { + return NilMeter{} + } + m := newStandardMeter() + arbiter.Lock() + defer arbiter.Unlock() + arbiter.meters = append(arbiter.meters, m) + if !arbiter.started { + arbiter.started = true + go arbiter.tick() + } + return m +} + +// NewMeter constructs and registers a new StandardMeter and launches a +// goroutine. +func NewRegisteredMeter(name string, r Registry) Meter { + c := NewMeter() + if nil == r { + r = DefaultRegistry + } + r.Register(name, c) + return c +} + +// MeterSnapshot is a read-only copy of another Meter. +type MeterSnapshot struct { + count int64 + rate1, rate5, rate15, rateMean float64 +} + +// Count returns the count of events at the time the snapshot was taken. +func (m *MeterSnapshot) Count() int64 { return m.count } + +// Mark panics. +func (*MeterSnapshot) Mark(n int64) { + panic("Mark called on a MeterSnapshot") +} + +// Rate1 returns the one-minute moving average rate of events per second at the +// time the snapshot was taken. +func (m *MeterSnapshot) Rate1() float64 { return m.rate1 } + +// Rate5 returns the five-minute moving average rate of events per second at +// the time the snapshot was taken. +func (m *MeterSnapshot) Rate5() float64 { return m.rate5 } + +// Rate15 returns the fifteen-minute moving average rate of events per second +// at the time the snapshot was taken. +func (m *MeterSnapshot) Rate15() float64 { return m.rate15 } + +// RateMean returns the meter's mean rate of events per second at the time the +// snapshot was taken. +func (m *MeterSnapshot) RateMean() float64 { return m.rateMean } + +// Snapshot returns the snapshot. +func (m *MeterSnapshot) Snapshot() Meter { return m } + +// NilMeter is a no-op Meter. +type NilMeter struct{} + +// Count is a no-op. +func (NilMeter) Count() int64 { return 0 } + +// Mark is a no-op. +func (NilMeter) Mark(n int64) {} + +// Rate1 is a no-op. +func (NilMeter) Rate1() float64 { return 0.0 } + +// Rate5 is a no-op. +func (NilMeter) Rate5() float64 { return 0.0 } + +// Rate15is a no-op. +func (NilMeter) Rate15() float64 { return 0.0 } + +// RateMean is a no-op. +func (NilMeter) RateMean() float64 { return 0.0 } + +// Snapshot is a no-op. +func (NilMeter) Snapshot() Meter { return NilMeter{} } + +// StandardMeter is the standard implementation of a Meter. +type StandardMeter struct { + lock sync.RWMutex + snapshot *MeterSnapshot + a1, a5, a15 EWMA + startTime time.Time +} + +func newStandardMeter() *StandardMeter { + return &StandardMeter{ + snapshot: &MeterSnapshot{}, + a1: NewEWMA1(), + a5: NewEWMA5(), + a15: NewEWMA15(), + startTime: time.Now(), + } +} + +// Count returns the number of events recorded. +func (m *StandardMeter) Count() int64 { + m.lock.RLock() + count := m.snapshot.count + m.lock.RUnlock() + return count +} + +// Mark records the occurance of n events. +func (m *StandardMeter) Mark(n int64) { + m.lock.Lock() + defer m.lock.Unlock() + m.snapshot.count += n + m.a1.Update(n) + m.a5.Update(n) + m.a15.Update(n) + m.updateSnapshot() +} + +// Rate1 returns the one-minute moving average rate of events per second. +func (m *StandardMeter) Rate1() float64 { + m.lock.RLock() + rate1 := m.snapshot.rate1 + m.lock.RUnlock() + return rate1 +} + +// Rate5 returns the five-minute moving average rate of events per second. +func (m *StandardMeter) Rate5() float64 { + m.lock.RLock() + rate5 := m.snapshot.rate5 + m.lock.RUnlock() + return rate5 +} + +// Rate15 returns the fifteen-minute moving average rate of events per second. +func (m *StandardMeter) Rate15() float64 { + m.lock.RLock() + rate15 := m.snapshot.rate15 + m.lock.RUnlock() + return rate15 +} + +// RateMean returns the meter's mean rate of events per second. +func (m *StandardMeter) RateMean() float64 { + m.lock.RLock() + rateMean := m.snapshot.rateMean + m.lock.RUnlock() + return rateMean +} + +// Snapshot returns a read-only copy of the meter. +func (m *StandardMeter) Snapshot() Meter { + m.lock.RLock() + snapshot := *m.snapshot + m.lock.RUnlock() + return &snapshot +} + +func (m *StandardMeter) updateSnapshot() { + // should run with write lock held on m.lock + snapshot := m.snapshot + snapshot.rate1 = m.a1.Rate() + snapshot.rate5 = m.a5.Rate() + snapshot.rate15 = m.a15.Rate() + snapshot.rateMean = float64(snapshot.count) / time.Since(m.startTime).Seconds() +} + +func (m *StandardMeter) tick() { + m.lock.Lock() + defer m.lock.Unlock() + m.a1.Tick() + m.a5.Tick() + m.a15.Tick() + m.updateSnapshot() +} + +type meterArbiter struct { + sync.RWMutex + started bool + meters []*StandardMeter + ticker *time.Ticker +} + +var arbiter = meterArbiter{ticker: time.NewTicker(5e9)} + +// Ticks meters on the scheduled interval +func (ma *meterArbiter) tick() { + for { + select { + case <-ma.ticker.C: + ma.tickMeters() + } + } +} + +func (ma *meterArbiter) tickMeters() { + ma.RLock() + defer ma.RUnlock() + for _, meter := range ma.meters { + meter.tick() + } +} diff --git a/vendor/github.com/rcrowley/go-metrics/metrics.go b/vendor/github.com/rcrowley/go-metrics/metrics.go new file mode 100644 index 00000000000..b97a49ed123 --- /dev/null +++ b/vendor/github.com/rcrowley/go-metrics/metrics.go @@ -0,0 +1,13 @@ +// Go port of Coda Hale's Metrics library +// +// +// +// Coda Hale's original work: +package metrics + +// UseNilMetrics is checked by the constructor functions for all of the +// standard metrics. If it is true, the metric returned is a stub. +// +// This global kill-switch helps quantify the observer effect and makes +// for less cluttered pprof profiles. +var UseNilMetrics bool = false diff --git a/vendor/github.com/rcrowley/go-metrics/opentsdb.go b/vendor/github.com/rcrowley/go-metrics/opentsdb.go new file mode 100644 index 00000000000..266b6c93d21 --- /dev/null +++ b/vendor/github.com/rcrowley/go-metrics/opentsdb.go @@ -0,0 +1,119 @@ +package metrics + +import ( + "bufio" + "fmt" + "log" + "net" + "os" + "strings" + "time" +) + +var shortHostName string = "" + +// OpenTSDBConfig provides a container with configuration parameters for +// the OpenTSDB exporter +type OpenTSDBConfig struct { + Addr *net.TCPAddr // Network address to connect to + Registry Registry // Registry to be exported + FlushInterval time.Duration // Flush interval + DurationUnit time.Duration // Time conversion unit for durations + Prefix string // Prefix to be prepended to metric names +} + +// OpenTSDB is a blocking exporter function which reports metrics in r +// to a TSDB server located at addr, flushing them every d duration +// and prepending metric names with prefix. +func OpenTSDB(r Registry, d time.Duration, prefix string, addr *net.TCPAddr) { + OpenTSDBWithConfig(OpenTSDBConfig{ + Addr: addr, + Registry: r, + FlushInterval: d, + DurationUnit: time.Nanosecond, + Prefix: prefix, + }) +} + +// OpenTSDBWithConfig is a blocking exporter function just like OpenTSDB, +// but it takes a OpenTSDBConfig instead. +func OpenTSDBWithConfig(c OpenTSDBConfig) { + for _ = range time.Tick(c.FlushInterval) { + if err := openTSDB(&c); nil != err { + log.Println(err) + } + } +} + +func getShortHostname() string { + if shortHostName == "" { + host, _ := os.Hostname() + if index := strings.Index(host, "."); index > 0 { + shortHostName = host[:index] + } else { + shortHostName = host + } + } + return shortHostName +} + +func openTSDB(c *OpenTSDBConfig) error { + shortHostname := getShortHostname() + now := time.Now().Unix() + du := float64(c.DurationUnit) + conn, err := net.DialTCP("tcp", nil, c.Addr) + if nil != err { + return err + } + defer conn.Close() + w := bufio.NewWriter(conn) + c.Registry.Each(func(name string, i interface{}) { + switch metric := i.(type) { + case Counter: + fmt.Fprintf(w, "put %s.%s.count %d %d host=%s\n", c.Prefix, name, now, metric.Count(), shortHostname) + case Gauge: + fmt.Fprintf(w, "put %s.%s.value %d %d host=%s\n", c.Prefix, name, now, metric.Value(), shortHostname) + case GaugeFloat64: + fmt.Fprintf(w, "put %s.%s.value %d %f host=%s\n", c.Prefix, name, now, metric.Value(), shortHostname) + case Histogram: + h := metric.Snapshot() + ps := h.Percentiles([]float64{0.5, 0.75, 0.95, 0.99, 0.999}) + fmt.Fprintf(w, "put %s.%s.count %d %d host=%s\n", c.Prefix, name, now, h.Count(), shortHostname) + fmt.Fprintf(w, "put %s.%s.min %d %d host=%s\n", c.Prefix, name, now, h.Min(), shortHostname) + fmt.Fprintf(w, "put %s.%s.max %d %d host=%s\n", c.Prefix, name, now, h.Max(), shortHostname) + fmt.Fprintf(w, "put %s.%s.mean %d %.2f host=%s\n", c.Prefix, name, now, h.Mean(), shortHostname) + fmt.Fprintf(w, "put %s.%s.std-dev %d %.2f host=%s\n", c.Prefix, name, now, h.StdDev(), shortHostname) + fmt.Fprintf(w, "put %s.%s.50-percentile %d %.2f host=%s\n", c.Prefix, name, now, ps[0], shortHostname) + fmt.Fprintf(w, "put %s.%s.75-percentile %d %.2f host=%s\n", c.Prefix, name, now, ps[1], shortHostname) + fmt.Fprintf(w, "put %s.%s.95-percentile %d %.2f host=%s\n", c.Prefix, name, now, ps[2], shortHostname) + fmt.Fprintf(w, "put %s.%s.99-percentile %d %.2f host=%s\n", c.Prefix, name, now, ps[3], shortHostname) + fmt.Fprintf(w, "put %s.%s.999-percentile %d %.2f host=%s\n", c.Prefix, name, now, ps[4], shortHostname) + case Meter: + m := metric.Snapshot() + fmt.Fprintf(w, "put %s.%s.count %d %d host=%s\n", c.Prefix, name, now, m.Count(), shortHostname) + fmt.Fprintf(w, "put %s.%s.one-minute %d %.2f host=%s\n", c.Prefix, name, now, m.Rate1(), shortHostname) + fmt.Fprintf(w, "put %s.%s.five-minute %d %.2f host=%s\n", c.Prefix, name, now, m.Rate5(), shortHostname) + fmt.Fprintf(w, "put %s.%s.fifteen-minute %d %.2f host=%s\n", c.Prefix, name, now, m.Rate15(), shortHostname) + fmt.Fprintf(w, "put %s.%s.mean %d %.2f host=%s\n", c.Prefix, name, now, m.RateMean(), shortHostname) + case Timer: + t := metric.Snapshot() + ps := t.Percentiles([]float64{0.5, 0.75, 0.95, 0.99, 0.999}) + fmt.Fprintf(w, "put %s.%s.count %d %d host=%s\n", c.Prefix, name, now, t.Count(), shortHostname) + fmt.Fprintf(w, "put %s.%s.min %d %d host=%s\n", c.Prefix, name, now, t.Min()/int64(du), shortHostname) + fmt.Fprintf(w, "put %s.%s.max %d %d host=%s\n", c.Prefix, name, now, t.Max()/int64(du), shortHostname) + fmt.Fprintf(w, "put %s.%s.mean %d %.2f host=%s\n", c.Prefix, name, now, t.Mean()/du, shortHostname) + fmt.Fprintf(w, "put %s.%s.std-dev %d %.2f host=%s\n", c.Prefix, name, now, t.StdDev()/du, shortHostname) + fmt.Fprintf(w, "put %s.%s.50-percentile %d %.2f host=%s\n", c.Prefix, name, now, ps[0]/du, shortHostname) + fmt.Fprintf(w, "put %s.%s.75-percentile %d %.2f host=%s\n", c.Prefix, name, now, ps[1]/du, shortHostname) + fmt.Fprintf(w, "put %s.%s.95-percentile %d %.2f host=%s\n", c.Prefix, name, now, ps[2]/du, shortHostname) + fmt.Fprintf(w, "put %s.%s.99-percentile %d %.2f host=%s\n", c.Prefix, name, now, ps[3]/du, shortHostname) + fmt.Fprintf(w, "put %s.%s.999-percentile %d %.2f host=%s\n", c.Prefix, name, now, ps[4]/du, shortHostname) + fmt.Fprintf(w, "put %s.%s.one-minute %d %.2f host=%s\n", c.Prefix, name, now, t.Rate1(), shortHostname) + fmt.Fprintf(w, "put %s.%s.five-minute %d %.2f host=%s\n", c.Prefix, name, now, t.Rate5(), shortHostname) + fmt.Fprintf(w, "put %s.%s.fifteen-minute %d %.2f host=%s\n", c.Prefix, name, now, t.Rate15(), shortHostname) + fmt.Fprintf(w, "put %s.%s.mean-rate %d %.2f host=%s\n", c.Prefix, name, now, t.RateMean(), shortHostname) + } + w.Flush() + }) + return nil +} diff --git a/vendor/github.com/rcrowley/go-metrics/registry.go b/vendor/github.com/rcrowley/go-metrics/registry.go new file mode 100644 index 00000000000..9086dcbdd14 --- /dev/null +++ b/vendor/github.com/rcrowley/go-metrics/registry.go @@ -0,0 +1,270 @@ +package metrics + +import ( + "fmt" + "reflect" + "strings" + "sync" +) + +// DuplicateMetric is the error returned by Registry.Register when a metric +// already exists. If you mean to Register that metric you must first +// Unregister the existing metric. +type DuplicateMetric string + +func (err DuplicateMetric) Error() string { + return fmt.Sprintf("duplicate metric: %s", string(err)) +} + +// A Registry holds references to a set of metrics by name and can iterate +// over them, calling callback functions provided by the user. +// +// This is an interface so as to encourage other structs to implement +// the Registry API as appropriate. +type Registry interface { + + // Call the given function for each registered metric. + Each(func(string, interface{})) + + // Get the metric by the given name or nil if none is registered. + Get(string) interface{} + + // Gets an existing metric or registers the given one. + // The interface can be the metric to register if not found in registry, + // or a function returning the metric for lazy instantiation. + GetOrRegister(string, interface{}) interface{} + + // Register the given metric under the given name. + Register(string, interface{}) error + + // Run all registered healthchecks. + RunHealthchecks() + + // Unregister the metric with the given name. + Unregister(string) + + // Unregister all metrics. (Mostly for testing.) + UnregisterAll() +} + +// The standard implementation of a Registry is a mutex-protected map +// of names to metrics. +type StandardRegistry struct { + metrics map[string]interface{} + mutex sync.Mutex +} + +// Create a new registry. +func NewRegistry() Registry { + return &StandardRegistry{metrics: make(map[string]interface{})} +} + +// Call the given function for each registered metric. +func (r *StandardRegistry) Each(f func(string, interface{})) { + for name, i := range r.registered() { + f(name, i) + } +} + +// Get the metric by the given name or nil if none is registered. +func (r *StandardRegistry) Get(name string) interface{} { + r.mutex.Lock() + defer r.mutex.Unlock() + return r.metrics[name] +} + +// Gets an existing metric or creates and registers a new one. Threadsafe +// alternative to calling Get and Register on failure. +// The interface can be the metric to register if not found in registry, +// or a function returning the metric for lazy instantiation. +func (r *StandardRegistry) GetOrRegister(name string, i interface{}) interface{} { + r.mutex.Lock() + defer r.mutex.Unlock() + if metric, ok := r.metrics[name]; ok { + return metric + } + if v := reflect.ValueOf(i); v.Kind() == reflect.Func { + i = v.Call(nil)[0].Interface() + } + r.register(name, i) + return i +} + +// Register the given metric under the given name. Returns a DuplicateMetric +// if a metric by the given name is already registered. +func (r *StandardRegistry) Register(name string, i interface{}) error { + r.mutex.Lock() + defer r.mutex.Unlock() + return r.register(name, i) +} + +// Run all registered healthchecks. +func (r *StandardRegistry) RunHealthchecks() { + r.mutex.Lock() + defer r.mutex.Unlock() + for _, i := range r.metrics { + if h, ok := i.(Healthcheck); ok { + h.Check() + } + } +} + +// Unregister the metric with the given name. +func (r *StandardRegistry) Unregister(name string) { + r.mutex.Lock() + defer r.mutex.Unlock() + delete(r.metrics, name) +} + +// Unregister all metrics. (Mostly for testing.) +func (r *StandardRegistry) UnregisterAll() { + r.mutex.Lock() + defer r.mutex.Unlock() + for name, _ := range r.metrics { + delete(r.metrics, name) + } +} + +func (r *StandardRegistry) register(name string, i interface{}) error { + if _, ok := r.metrics[name]; ok { + return DuplicateMetric(name) + } + switch i.(type) { + case Counter, Gauge, GaugeFloat64, Healthcheck, Histogram, Meter, Timer: + r.metrics[name] = i + } + return nil +} + +func (r *StandardRegistry) registered() map[string]interface{} { + r.mutex.Lock() + defer r.mutex.Unlock() + metrics := make(map[string]interface{}, len(r.metrics)) + for name, i := range r.metrics { + metrics[name] = i + } + return metrics +} + +type PrefixedRegistry struct { + underlying Registry + prefix string +} + +func NewPrefixedRegistry(prefix string) Registry { + return &PrefixedRegistry{ + underlying: NewRegistry(), + prefix: prefix, + } +} + +func NewPrefixedChildRegistry(parent Registry, prefix string) Registry { + return &PrefixedRegistry{ + underlying: parent, + prefix: prefix, + } +} + +// Call the given function for each registered metric. +func (r *PrefixedRegistry) Each(fn func(string, interface{})) { + wrappedFn := func (prefix string) func(string, interface{}) { + return func(name string, iface interface{}) { + if strings.HasPrefix(name,prefix) { + fn(name, iface) + } else { + return + } + } + } + + baseRegistry, prefix := findPrefix(r, "") + baseRegistry.Each(wrappedFn(prefix)) +} + +func findPrefix(registry Registry, prefix string) (Registry, string) { + switch r := registry.(type) { + case *PrefixedRegistry: + return findPrefix(r.underlying, r.prefix + prefix) + case *StandardRegistry: + return r, prefix + } + return nil, "" +} + +// Get the metric by the given name or nil if none is registered. +func (r *PrefixedRegistry) Get(name string) interface{} { + realName := r.prefix + name + return r.underlying.Get(realName) +} + +// Gets an existing metric or registers the given one. +// The interface can be the metric to register if not found in registry, +// or a function returning the metric for lazy instantiation. +func (r *PrefixedRegistry) GetOrRegister(name string, metric interface{}) interface{} { + realName := r.prefix + name + return r.underlying.GetOrRegister(realName, metric) +} + +// Register the given metric under the given name. The name will be prefixed. +func (r *PrefixedRegistry) Register(name string, metric interface{}) error { + realName := r.prefix + name + return r.underlying.Register(realName, metric) +} + +// Run all registered healthchecks. +func (r *PrefixedRegistry) RunHealthchecks() { + r.underlying.RunHealthchecks() +} + +// Unregister the metric with the given name. The name will be prefixed. +func (r *PrefixedRegistry) Unregister(name string) { + realName := r.prefix + name + r.underlying.Unregister(realName) +} + +// Unregister all metrics. (Mostly for testing.) +func (r *PrefixedRegistry) UnregisterAll() { + r.underlying.UnregisterAll() +} + +var DefaultRegistry Registry = NewRegistry() + +// Call the given function for each registered metric. +func Each(f func(string, interface{})) { + DefaultRegistry.Each(f) +} + +// Get the metric by the given name or nil if none is registered. +func Get(name string) interface{} { + return DefaultRegistry.Get(name) +} + +// Gets an existing metric or creates and registers a new one. Threadsafe +// alternative to calling Get and Register on failure. +func GetOrRegister(name string, i interface{}) interface{} { + return DefaultRegistry.GetOrRegister(name, i) +} + +// Register the given metric under the given name. Returns a DuplicateMetric +// if a metric by the given name is already registered. +func Register(name string, i interface{}) error { + return DefaultRegistry.Register(name, i) +} + +// Register the given metric under the given name. Panics if a metric by the +// given name is already registered. +func MustRegister(name string, i interface{}) { + if err := Register(name, i); err != nil { + panic(err) + } +} + +// Run all registered healthchecks. +func RunHealthchecks() { + DefaultRegistry.RunHealthchecks() +} + +// Unregister the metric with the given name. +func Unregister(name string) { + DefaultRegistry.Unregister(name) +} diff --git a/vendor/github.com/rcrowley/go-metrics/runtime.go b/vendor/github.com/rcrowley/go-metrics/runtime.go new file mode 100644 index 00000000000..11c6b785a0f --- /dev/null +++ b/vendor/github.com/rcrowley/go-metrics/runtime.go @@ -0,0 +1,212 @@ +package metrics + +import ( + "runtime" + "runtime/pprof" + "time" +) + +var ( + memStats runtime.MemStats + runtimeMetrics struct { + MemStats struct { + Alloc Gauge + BuckHashSys Gauge + DebugGC Gauge + EnableGC Gauge + Frees Gauge + HeapAlloc Gauge + HeapIdle Gauge + HeapInuse Gauge + HeapObjects Gauge + HeapReleased Gauge + HeapSys Gauge + LastGC Gauge + Lookups Gauge + Mallocs Gauge + MCacheInuse Gauge + MCacheSys Gauge + MSpanInuse Gauge + MSpanSys Gauge + NextGC Gauge + NumGC Gauge + GCCPUFraction GaugeFloat64 + PauseNs Histogram + PauseTotalNs Gauge + StackInuse Gauge + StackSys Gauge + Sys Gauge + TotalAlloc Gauge + } + NumCgoCall Gauge + NumGoroutine Gauge + NumThread Gauge + ReadMemStats Timer + } + frees uint64 + lookups uint64 + mallocs uint64 + numGC uint32 + numCgoCalls int64 + + threadCreateProfile = pprof.Lookup("threadcreate") +) + +// Capture new values for the Go runtime statistics exported in +// runtime.MemStats. This is designed to be called as a goroutine. +func CaptureRuntimeMemStats(r Registry, d time.Duration) { + for _ = range time.Tick(d) { + CaptureRuntimeMemStatsOnce(r) + } +} + +// Capture new values for the Go runtime statistics exported in +// runtime.MemStats. This is designed to be called in a background +// goroutine. Giving a registry which has not been given to +// RegisterRuntimeMemStats will panic. +// +// Be very careful with this because runtime.ReadMemStats calls the C +// functions runtime·semacquire(&runtime·worldsema) and runtime·stoptheworld() +// and that last one does what it says on the tin. +func CaptureRuntimeMemStatsOnce(r Registry) { + t := time.Now() + runtime.ReadMemStats(&memStats) // This takes 50-200us. + runtimeMetrics.ReadMemStats.UpdateSince(t) + + runtimeMetrics.MemStats.Alloc.Update(int64(memStats.Alloc)) + runtimeMetrics.MemStats.BuckHashSys.Update(int64(memStats.BuckHashSys)) + if memStats.DebugGC { + runtimeMetrics.MemStats.DebugGC.Update(1) + } else { + runtimeMetrics.MemStats.DebugGC.Update(0) + } + if memStats.EnableGC { + runtimeMetrics.MemStats.EnableGC.Update(1) + } else { + runtimeMetrics.MemStats.EnableGC.Update(0) + } + + runtimeMetrics.MemStats.Frees.Update(int64(memStats.Frees - frees)) + runtimeMetrics.MemStats.HeapAlloc.Update(int64(memStats.HeapAlloc)) + runtimeMetrics.MemStats.HeapIdle.Update(int64(memStats.HeapIdle)) + runtimeMetrics.MemStats.HeapInuse.Update(int64(memStats.HeapInuse)) + runtimeMetrics.MemStats.HeapObjects.Update(int64(memStats.HeapObjects)) + runtimeMetrics.MemStats.HeapReleased.Update(int64(memStats.HeapReleased)) + runtimeMetrics.MemStats.HeapSys.Update(int64(memStats.HeapSys)) + runtimeMetrics.MemStats.LastGC.Update(int64(memStats.LastGC)) + runtimeMetrics.MemStats.Lookups.Update(int64(memStats.Lookups - lookups)) + runtimeMetrics.MemStats.Mallocs.Update(int64(memStats.Mallocs - mallocs)) + runtimeMetrics.MemStats.MCacheInuse.Update(int64(memStats.MCacheInuse)) + runtimeMetrics.MemStats.MCacheSys.Update(int64(memStats.MCacheSys)) + runtimeMetrics.MemStats.MSpanInuse.Update(int64(memStats.MSpanInuse)) + runtimeMetrics.MemStats.MSpanSys.Update(int64(memStats.MSpanSys)) + runtimeMetrics.MemStats.NextGC.Update(int64(memStats.NextGC)) + runtimeMetrics.MemStats.NumGC.Update(int64(memStats.NumGC - numGC)) + runtimeMetrics.MemStats.GCCPUFraction.Update(gcCPUFraction(&memStats)) + + // + i := numGC % uint32(len(memStats.PauseNs)) + ii := memStats.NumGC % uint32(len(memStats.PauseNs)) + if memStats.NumGC-numGC >= uint32(len(memStats.PauseNs)) { + for i = 0; i < uint32(len(memStats.PauseNs)); i++ { + runtimeMetrics.MemStats.PauseNs.Update(int64(memStats.PauseNs[i])) + } + } else { + if i > ii { + for ; i < uint32(len(memStats.PauseNs)); i++ { + runtimeMetrics.MemStats.PauseNs.Update(int64(memStats.PauseNs[i])) + } + i = 0 + } + for ; i < ii; i++ { + runtimeMetrics.MemStats.PauseNs.Update(int64(memStats.PauseNs[i])) + } + } + frees = memStats.Frees + lookups = memStats.Lookups + mallocs = memStats.Mallocs + numGC = memStats.NumGC + + runtimeMetrics.MemStats.PauseTotalNs.Update(int64(memStats.PauseTotalNs)) + runtimeMetrics.MemStats.StackInuse.Update(int64(memStats.StackInuse)) + runtimeMetrics.MemStats.StackSys.Update(int64(memStats.StackSys)) + runtimeMetrics.MemStats.Sys.Update(int64(memStats.Sys)) + runtimeMetrics.MemStats.TotalAlloc.Update(int64(memStats.TotalAlloc)) + + currentNumCgoCalls := numCgoCall() + runtimeMetrics.NumCgoCall.Update(currentNumCgoCalls - numCgoCalls) + numCgoCalls = currentNumCgoCalls + + runtimeMetrics.NumGoroutine.Update(int64(runtime.NumGoroutine())) + + runtimeMetrics.NumThread.Update(int64(threadCreateProfile.Count())) +} + +// Register runtimeMetrics for the Go runtime statistics exported in runtime and +// specifically runtime.MemStats. The runtimeMetrics are named by their +// fully-qualified Go symbols, i.e. runtime.MemStats.Alloc. +func RegisterRuntimeMemStats(r Registry) { + runtimeMetrics.MemStats.Alloc = NewGauge() + runtimeMetrics.MemStats.BuckHashSys = NewGauge() + runtimeMetrics.MemStats.DebugGC = NewGauge() + runtimeMetrics.MemStats.EnableGC = NewGauge() + runtimeMetrics.MemStats.Frees = NewGauge() + runtimeMetrics.MemStats.HeapAlloc = NewGauge() + runtimeMetrics.MemStats.HeapIdle = NewGauge() + runtimeMetrics.MemStats.HeapInuse = NewGauge() + runtimeMetrics.MemStats.HeapObjects = NewGauge() + runtimeMetrics.MemStats.HeapReleased = NewGauge() + runtimeMetrics.MemStats.HeapSys = NewGauge() + runtimeMetrics.MemStats.LastGC = NewGauge() + runtimeMetrics.MemStats.Lookups = NewGauge() + runtimeMetrics.MemStats.Mallocs = NewGauge() + runtimeMetrics.MemStats.MCacheInuse = NewGauge() + runtimeMetrics.MemStats.MCacheSys = NewGauge() + runtimeMetrics.MemStats.MSpanInuse = NewGauge() + runtimeMetrics.MemStats.MSpanSys = NewGauge() + runtimeMetrics.MemStats.NextGC = NewGauge() + runtimeMetrics.MemStats.NumGC = NewGauge() + runtimeMetrics.MemStats.GCCPUFraction = NewGaugeFloat64() + runtimeMetrics.MemStats.PauseNs = NewHistogram(NewExpDecaySample(1028, 0.015)) + runtimeMetrics.MemStats.PauseTotalNs = NewGauge() + runtimeMetrics.MemStats.StackInuse = NewGauge() + runtimeMetrics.MemStats.StackSys = NewGauge() + runtimeMetrics.MemStats.Sys = NewGauge() + runtimeMetrics.MemStats.TotalAlloc = NewGauge() + runtimeMetrics.NumCgoCall = NewGauge() + runtimeMetrics.NumGoroutine = NewGauge() + runtimeMetrics.NumThread = NewGauge() + runtimeMetrics.ReadMemStats = NewTimer() + + r.Register("runtime.MemStats.Alloc", runtimeMetrics.MemStats.Alloc) + r.Register("runtime.MemStats.BuckHashSys", runtimeMetrics.MemStats.BuckHashSys) + r.Register("runtime.MemStats.DebugGC", runtimeMetrics.MemStats.DebugGC) + r.Register("runtime.MemStats.EnableGC", runtimeMetrics.MemStats.EnableGC) + r.Register("runtime.MemStats.Frees", runtimeMetrics.MemStats.Frees) + r.Register("runtime.MemStats.HeapAlloc", runtimeMetrics.MemStats.HeapAlloc) + r.Register("runtime.MemStats.HeapIdle", runtimeMetrics.MemStats.HeapIdle) + r.Register("runtime.MemStats.HeapInuse", runtimeMetrics.MemStats.HeapInuse) + r.Register("runtime.MemStats.HeapObjects", runtimeMetrics.MemStats.HeapObjects) + r.Register("runtime.MemStats.HeapReleased", runtimeMetrics.MemStats.HeapReleased) + r.Register("runtime.MemStats.HeapSys", runtimeMetrics.MemStats.HeapSys) + r.Register("runtime.MemStats.LastGC", runtimeMetrics.MemStats.LastGC) + r.Register("runtime.MemStats.Lookups", runtimeMetrics.MemStats.Lookups) + r.Register("runtime.MemStats.Mallocs", runtimeMetrics.MemStats.Mallocs) + r.Register("runtime.MemStats.MCacheInuse", runtimeMetrics.MemStats.MCacheInuse) + r.Register("runtime.MemStats.MCacheSys", runtimeMetrics.MemStats.MCacheSys) + r.Register("runtime.MemStats.MSpanInuse", runtimeMetrics.MemStats.MSpanInuse) + r.Register("runtime.MemStats.MSpanSys", runtimeMetrics.MemStats.MSpanSys) + r.Register("runtime.MemStats.NextGC", runtimeMetrics.MemStats.NextGC) + r.Register("runtime.MemStats.NumGC", runtimeMetrics.MemStats.NumGC) + r.Register("runtime.MemStats.GCCPUFraction", runtimeMetrics.MemStats.GCCPUFraction) + r.Register("runtime.MemStats.PauseNs", runtimeMetrics.MemStats.PauseNs) + r.Register("runtime.MemStats.PauseTotalNs", runtimeMetrics.MemStats.PauseTotalNs) + r.Register("runtime.MemStats.StackInuse", runtimeMetrics.MemStats.StackInuse) + r.Register("runtime.MemStats.StackSys", runtimeMetrics.MemStats.StackSys) + r.Register("runtime.MemStats.Sys", runtimeMetrics.MemStats.Sys) + r.Register("runtime.MemStats.TotalAlloc", runtimeMetrics.MemStats.TotalAlloc) + r.Register("runtime.NumCgoCall", runtimeMetrics.NumCgoCall) + r.Register("runtime.NumGoroutine", runtimeMetrics.NumGoroutine) + r.Register("runtime.NumThread", runtimeMetrics.NumThread) + r.Register("runtime.ReadMemStats", runtimeMetrics.ReadMemStats) +} diff --git a/vendor/github.com/rcrowley/go-metrics/runtime_cgo.go b/vendor/github.com/rcrowley/go-metrics/runtime_cgo.go new file mode 100644 index 00000000000..e3391f4e89f --- /dev/null +++ b/vendor/github.com/rcrowley/go-metrics/runtime_cgo.go @@ -0,0 +1,10 @@ +// +build cgo +// +build !appengine + +package metrics + +import "runtime" + +func numCgoCall() int64 { + return runtime.NumCgoCall() +} diff --git a/vendor/github.com/rcrowley/go-metrics/runtime_gccpufraction.go b/vendor/github.com/rcrowley/go-metrics/runtime_gccpufraction.go new file mode 100644 index 00000000000..ca12c05bac7 --- /dev/null +++ b/vendor/github.com/rcrowley/go-metrics/runtime_gccpufraction.go @@ -0,0 +1,9 @@ +// +build go1.5 + +package metrics + +import "runtime" + +func gcCPUFraction(memStats *runtime.MemStats) float64 { + return memStats.GCCPUFraction +} diff --git a/vendor/github.com/rcrowley/go-metrics/runtime_no_cgo.go b/vendor/github.com/rcrowley/go-metrics/runtime_no_cgo.go new file mode 100644 index 00000000000..616a3b4751b --- /dev/null +++ b/vendor/github.com/rcrowley/go-metrics/runtime_no_cgo.go @@ -0,0 +1,7 @@ +// +build !cgo appengine + +package metrics + +func numCgoCall() int64 { + return 0 +} diff --git a/vendor/github.com/rcrowley/go-metrics/runtime_no_gccpufraction.go b/vendor/github.com/rcrowley/go-metrics/runtime_no_gccpufraction.go new file mode 100644 index 00000000000..be96aa6f1be --- /dev/null +++ b/vendor/github.com/rcrowley/go-metrics/runtime_no_gccpufraction.go @@ -0,0 +1,9 @@ +// +build !go1.5 + +package metrics + +import "runtime" + +func gcCPUFraction(memStats *runtime.MemStats) float64 { + return 0 +} diff --git a/vendor/github.com/rcrowley/go-metrics/sample.go b/vendor/github.com/rcrowley/go-metrics/sample.go new file mode 100644 index 00000000000..5f6a37788ed --- /dev/null +++ b/vendor/github.com/rcrowley/go-metrics/sample.go @@ -0,0 +1,609 @@ +package metrics + +import ( + "math" + "math/rand" + "sort" + "sync" + "time" +) + +const rescaleThreshold = time.Hour + +// Samples maintain a statistically-significant selection of values from +// a stream. +type Sample interface { + Clear() + Count() int64 + Max() int64 + Mean() float64 + Min() int64 + Percentile(float64) float64 + Percentiles([]float64) []float64 + Size() int + Snapshot() Sample + StdDev() float64 + Sum() int64 + Update(int64) + Values() []int64 + Variance() float64 +} + +// ExpDecaySample is an exponentially-decaying sample using a forward-decaying +// priority reservoir. See Cormode et al's "Forward Decay: A Practical Time +// Decay Model for Streaming Systems". +// +// +type ExpDecaySample struct { + alpha float64 + count int64 + mutex sync.Mutex + reservoirSize int + t0, t1 time.Time + values *expDecaySampleHeap +} + +// NewExpDecaySample constructs a new exponentially-decaying sample with the +// given reservoir size and alpha. +func NewExpDecaySample(reservoirSize int, alpha float64) Sample { + if UseNilMetrics { + return NilSample{} + } + s := &ExpDecaySample{ + alpha: alpha, + reservoirSize: reservoirSize, + t0: time.Now(), + values: newExpDecaySampleHeap(reservoirSize), + } + s.t1 = s.t0.Add(rescaleThreshold) + return s +} + +// Clear clears all samples. +func (s *ExpDecaySample) Clear() { + s.mutex.Lock() + defer s.mutex.Unlock() + s.count = 0 + s.t0 = time.Now() + s.t1 = s.t0.Add(rescaleThreshold) + s.values.Clear() +} + +// Count returns the number of samples recorded, which may exceed the +// reservoir size. +func (s *ExpDecaySample) Count() int64 { + s.mutex.Lock() + defer s.mutex.Unlock() + return s.count +} + +// Max returns the maximum value in the sample, which may not be the maximum +// value ever to be part of the sample. +func (s *ExpDecaySample) Max() int64 { + return SampleMax(s.Values()) +} + +// Mean returns the mean of the values in the sample. +func (s *ExpDecaySample) Mean() float64 { + return SampleMean(s.Values()) +} + +// Min returns the minimum value in the sample, which may not be the minimum +// value ever to be part of the sample. +func (s *ExpDecaySample) Min() int64 { + return SampleMin(s.Values()) +} + +// Percentile returns an arbitrary percentile of values in the sample. +func (s *ExpDecaySample) Percentile(p float64) float64 { + return SamplePercentile(s.Values(), p) +} + +// Percentiles returns a slice of arbitrary percentiles of values in the +// sample. +func (s *ExpDecaySample) Percentiles(ps []float64) []float64 { + return SamplePercentiles(s.Values(), ps) +} + +// Size returns the size of the sample, which is at most the reservoir size. +func (s *ExpDecaySample) Size() int { + s.mutex.Lock() + defer s.mutex.Unlock() + return s.values.Size() +} + +// Snapshot returns a read-only copy of the sample. +func (s *ExpDecaySample) Snapshot() Sample { + s.mutex.Lock() + defer s.mutex.Unlock() + vals := s.values.Values() + values := make([]int64, len(vals)) + for i, v := range vals { + values[i] = v.v + } + return &SampleSnapshot{ + count: s.count, + values: values, + } +} + +// StdDev returns the standard deviation of the values in the sample. +func (s *ExpDecaySample) StdDev() float64 { + return SampleStdDev(s.Values()) +} + +// Sum returns the sum of the values in the sample. +func (s *ExpDecaySample) Sum() int64 { + return SampleSum(s.Values()) +} + +// Update samples a new value. +func (s *ExpDecaySample) Update(v int64) { + s.update(time.Now(), v) +} + +// Values returns a copy of the values in the sample. +func (s *ExpDecaySample) Values() []int64 { + s.mutex.Lock() + defer s.mutex.Unlock() + vals := s.values.Values() + values := make([]int64, len(vals)) + for i, v := range vals { + values[i] = v.v + } + return values +} + +// Variance returns the variance of the values in the sample. +func (s *ExpDecaySample) Variance() float64 { + return SampleVariance(s.Values()) +} + +// update samples a new value at a particular timestamp. This is a method all +// its own to facilitate testing. +func (s *ExpDecaySample) update(t time.Time, v int64) { + s.mutex.Lock() + defer s.mutex.Unlock() + s.count++ + if s.values.Size() == s.reservoirSize { + s.values.Pop() + } + s.values.Push(expDecaySample{ + k: math.Exp(t.Sub(s.t0).Seconds()*s.alpha) / rand.Float64(), + v: v, + }) + if t.After(s.t1) { + values := s.values.Values() + t0 := s.t0 + s.values.Clear() + s.t0 = t + s.t1 = s.t0.Add(rescaleThreshold) + for _, v := range values { + v.k = v.k * math.Exp(-s.alpha*s.t0.Sub(t0).Seconds()) + s.values.Push(v) + } + } +} + +// NilSample is a no-op Sample. +type NilSample struct{} + +// Clear is a no-op. +func (NilSample) Clear() {} + +// Count is a no-op. +func (NilSample) Count() int64 { return 0 } + +// Max is a no-op. +func (NilSample) Max() int64 { return 0 } + +// Mean is a no-op. +func (NilSample) Mean() float64 { return 0.0 } + +// Min is a no-op. +func (NilSample) Min() int64 { return 0 } + +// Percentile is a no-op. +func (NilSample) Percentile(p float64) float64 { return 0.0 } + +// Percentiles is a no-op. +func (NilSample) Percentiles(ps []float64) []float64 { + return make([]float64, len(ps)) +} + +// Size is a no-op. +func (NilSample) Size() int { return 0 } + +// Sample is a no-op. +func (NilSample) Snapshot() Sample { return NilSample{} } + +// StdDev is a no-op. +func (NilSample) StdDev() float64 { return 0.0 } + +// Sum is a no-op. +func (NilSample) Sum() int64 { return 0 } + +// Update is a no-op. +func (NilSample) Update(v int64) {} + +// Values is a no-op. +func (NilSample) Values() []int64 { return []int64{} } + +// Variance is a no-op. +func (NilSample) Variance() float64 { return 0.0 } + +// SampleMax returns the maximum value of the slice of int64. +func SampleMax(values []int64) int64 { + if 0 == len(values) { + return 0 + } + var max int64 = math.MinInt64 + for _, v := range values { + if max < v { + max = v + } + } + return max +} + +// SampleMean returns the mean value of the slice of int64. +func SampleMean(values []int64) float64 { + if 0 == len(values) { + return 0.0 + } + return float64(SampleSum(values)) / float64(len(values)) +} + +// SampleMin returns the minimum value of the slice of int64. +func SampleMin(values []int64) int64 { + if 0 == len(values) { + return 0 + } + var min int64 = math.MaxInt64 + for _, v := range values { + if min > v { + min = v + } + } + return min +} + +// SamplePercentiles returns an arbitrary percentile of the slice of int64. +func SamplePercentile(values int64Slice, p float64) float64 { + return SamplePercentiles(values, []float64{p})[0] +} + +// SamplePercentiles returns a slice of arbitrary percentiles of the slice of +// int64. +func SamplePercentiles(values int64Slice, ps []float64) []float64 { + scores := make([]float64, len(ps)) + size := len(values) + if size > 0 { + sort.Sort(values) + for i, p := range ps { + pos := p * float64(size+1) + if pos < 1.0 { + scores[i] = float64(values[0]) + } else if pos >= float64(size) { + scores[i] = float64(values[size-1]) + } else { + lower := float64(values[int(pos)-1]) + upper := float64(values[int(pos)]) + scores[i] = lower + (pos-math.Floor(pos))*(upper-lower) + } + } + } + return scores +} + +// SampleSnapshot is a read-only copy of another Sample. +type SampleSnapshot struct { + count int64 + values []int64 +} + +// Clear panics. +func (*SampleSnapshot) Clear() { + panic("Clear called on a SampleSnapshot") +} + +// Count returns the count of inputs at the time the snapshot was taken. +func (s *SampleSnapshot) Count() int64 { return s.count } + +// Max returns the maximal value at the time the snapshot was taken. +func (s *SampleSnapshot) Max() int64 { return SampleMax(s.values) } + +// Mean returns the mean value at the time the snapshot was taken. +func (s *SampleSnapshot) Mean() float64 { return SampleMean(s.values) } + +// Min returns the minimal value at the time the snapshot was taken. +func (s *SampleSnapshot) Min() int64 { return SampleMin(s.values) } + +// Percentile returns an arbitrary percentile of values at the time the +// snapshot was taken. +func (s *SampleSnapshot) Percentile(p float64) float64 { + return SamplePercentile(s.values, p) +} + +// Percentiles returns a slice of arbitrary percentiles of values at the time +// the snapshot was taken. +func (s *SampleSnapshot) Percentiles(ps []float64) []float64 { + return SamplePercentiles(s.values, ps) +} + +// Size returns the size of the sample at the time the snapshot was taken. +func (s *SampleSnapshot) Size() int { return len(s.values) } + +// Snapshot returns the snapshot. +func (s *SampleSnapshot) Snapshot() Sample { return s } + +// StdDev returns the standard deviation of values at the time the snapshot was +// taken. +func (s *SampleSnapshot) StdDev() float64 { return SampleStdDev(s.values) } + +// Sum returns the sum of values at the time the snapshot was taken. +func (s *SampleSnapshot) Sum() int64 { return SampleSum(s.values) } + +// Update panics. +func (*SampleSnapshot) Update(int64) { + panic("Update called on a SampleSnapshot") +} + +// Values returns a copy of the values in the sample. +func (s *SampleSnapshot) Values() []int64 { + values := make([]int64, len(s.values)) + copy(values, s.values) + return values +} + +// Variance returns the variance of values at the time the snapshot was taken. +func (s *SampleSnapshot) Variance() float64 { return SampleVariance(s.values) } + +// SampleStdDev returns the standard deviation of the slice of int64. +func SampleStdDev(values []int64) float64 { + return math.Sqrt(SampleVariance(values)) +} + +// SampleSum returns the sum of the slice of int64. +func SampleSum(values []int64) int64 { + var sum int64 + for _, v := range values { + sum += v + } + return sum +} + +// SampleVariance returns the variance of the slice of int64. +func SampleVariance(values []int64) float64 { + if 0 == len(values) { + return 0.0 + } + m := SampleMean(values) + var sum float64 + for _, v := range values { + d := float64(v) - m + sum += d * d + } + return sum / float64(len(values)) +} + +// A uniform sample using Vitter's Algorithm R. +// +// +type UniformSample struct { + count int64 + mutex sync.Mutex + reservoirSize int + values []int64 +} + +// NewUniformSample constructs a new uniform sample with the given reservoir +// size. +func NewUniformSample(reservoirSize int) Sample { + if UseNilMetrics { + return NilSample{} + } + return &UniformSample{ + reservoirSize: reservoirSize, + values: make([]int64, 0, reservoirSize), + } +} + +// Clear clears all samples. +func (s *UniformSample) Clear() { + s.mutex.Lock() + defer s.mutex.Unlock() + s.count = 0 + s.values = make([]int64, 0, s.reservoirSize) +} + +// Count returns the number of samples recorded, which may exceed the +// reservoir size. +func (s *UniformSample) Count() int64 { + s.mutex.Lock() + defer s.mutex.Unlock() + return s.count +} + +// Max returns the maximum value in the sample, which may not be the maximum +// value ever to be part of the sample. +func (s *UniformSample) Max() int64 { + s.mutex.Lock() + defer s.mutex.Unlock() + return SampleMax(s.values) +} + +// Mean returns the mean of the values in the sample. +func (s *UniformSample) Mean() float64 { + s.mutex.Lock() + defer s.mutex.Unlock() + return SampleMean(s.values) +} + +// Min returns the minimum value in the sample, which may not be the minimum +// value ever to be part of the sample. +func (s *UniformSample) Min() int64 { + s.mutex.Lock() + defer s.mutex.Unlock() + return SampleMin(s.values) +} + +// Percentile returns an arbitrary percentile of values in the sample. +func (s *UniformSample) Percentile(p float64) float64 { + s.mutex.Lock() + defer s.mutex.Unlock() + return SamplePercentile(s.values, p) +} + +// Percentiles returns a slice of arbitrary percentiles of values in the +// sample. +func (s *UniformSample) Percentiles(ps []float64) []float64 { + s.mutex.Lock() + defer s.mutex.Unlock() + return SamplePercentiles(s.values, ps) +} + +// Size returns the size of the sample, which is at most the reservoir size. +func (s *UniformSample) Size() int { + s.mutex.Lock() + defer s.mutex.Unlock() + return len(s.values) +} + +// Snapshot returns a read-only copy of the sample. +func (s *UniformSample) Snapshot() Sample { + s.mutex.Lock() + defer s.mutex.Unlock() + values := make([]int64, len(s.values)) + copy(values, s.values) + return &SampleSnapshot{ + count: s.count, + values: values, + } +} + +// StdDev returns the standard deviation of the values in the sample. +func (s *UniformSample) StdDev() float64 { + s.mutex.Lock() + defer s.mutex.Unlock() + return SampleStdDev(s.values) +} + +// Sum returns the sum of the values in the sample. +func (s *UniformSample) Sum() int64 { + s.mutex.Lock() + defer s.mutex.Unlock() + return SampleSum(s.values) +} + +// Update samples a new value. +func (s *UniformSample) Update(v int64) { + s.mutex.Lock() + defer s.mutex.Unlock() + s.count++ + if len(s.values) < s.reservoirSize { + s.values = append(s.values, v) + } else { + r := rand.Int63n(s.count) + if r < int64(len(s.values)) { + s.values[int(r)] = v + } + } +} + +// Values returns a copy of the values in the sample. +func (s *UniformSample) Values() []int64 { + s.mutex.Lock() + defer s.mutex.Unlock() + values := make([]int64, len(s.values)) + copy(values, s.values) + return values +} + +// Variance returns the variance of the values in the sample. +func (s *UniformSample) Variance() float64 { + s.mutex.Lock() + defer s.mutex.Unlock() + return SampleVariance(s.values) +} + +// expDecaySample represents an individual sample in a heap. +type expDecaySample struct { + k float64 + v int64 +} + +func newExpDecaySampleHeap(reservoirSize int) *expDecaySampleHeap { + return &expDecaySampleHeap{make([]expDecaySample, 0, reservoirSize)} +} + +// expDecaySampleHeap is a min-heap of expDecaySamples. +// The internal implementation is copied from the standard library's container/heap +type expDecaySampleHeap struct { + s []expDecaySample +} + +func (h *expDecaySampleHeap) Clear() { + h.s = h.s[:0] +} + +func (h *expDecaySampleHeap) Push(s expDecaySample) { + n := len(h.s) + h.s = h.s[0 : n+1] + h.s[n] = s + h.up(n) +} + +func (h *expDecaySampleHeap) Pop() expDecaySample { + n := len(h.s) - 1 + h.s[0], h.s[n] = h.s[n], h.s[0] + h.down(0, n) + + n = len(h.s) + s := h.s[n-1] + h.s = h.s[0 : n-1] + return s +} + +func (h *expDecaySampleHeap) Size() int { + return len(h.s) +} + +func (h *expDecaySampleHeap) Values() []expDecaySample { + return h.s +} + +func (h *expDecaySampleHeap) up(j int) { + for { + i := (j - 1) / 2 // parent + if i == j || !(h.s[j].k < h.s[i].k) { + break + } + h.s[i], h.s[j] = h.s[j], h.s[i] + j = i + } +} + +func (h *expDecaySampleHeap) down(i, n int) { + for { + j1 := 2*i + 1 + if j1 >= n || j1 < 0 { // j1 < 0 after int overflow + break + } + j := j1 // left child + if j2 := j1 + 1; j2 < n && !(h.s[j1].k < h.s[j2].k) { + j = j2 // = 2*i + 2 // right child + } + if !(h.s[j].k < h.s[i].k) { + break + } + h.s[i], h.s[j] = h.s[j], h.s[i] + i = j + } +} + +type int64Slice []int64 + +func (p int64Slice) Len() int { return len(p) } +func (p int64Slice) Less(i, j int) bool { return p[i] < p[j] } +func (p int64Slice) Swap(i, j int) { p[i], p[j] = p[j], p[i] } diff --git a/vendor/github.com/rcrowley/go-metrics/stathat/stathat.go b/vendor/github.com/rcrowley/go-metrics/stathat/stathat.go new file mode 100644 index 00000000000..0afcb484821 --- /dev/null +++ b/vendor/github.com/rcrowley/go-metrics/stathat/stathat.go @@ -0,0 +1,69 @@ +// Metrics output to StatHat. +package stathat + +import ( + "github.com/rcrowley/go-metrics" + "github.com/stathat/go" + "log" + "time" +) + +func Stathat(r metrics.Registry, d time.Duration, userkey string) { + for { + if err := sh(r, userkey); nil != err { + log.Println(err) + } + time.Sleep(d) + } +} + +func sh(r metrics.Registry, userkey string) error { + r.Each(func(name string, i interface{}) { + switch metric := i.(type) { + case metrics.Counter: + stathat.PostEZCount(name, userkey, int(metric.Count())) + case metrics.Gauge: + stathat.PostEZValue(name, userkey, float64(metric.Value())) + case metrics.GaugeFloat64: + stathat.PostEZValue(name, userkey, float64(metric.Value())) + case metrics.Histogram: + h := metric.Snapshot() + ps := h.Percentiles([]float64{0.5, 0.75, 0.95, 0.99, 0.999}) + stathat.PostEZCount(name+".count", userkey, int(h.Count())) + stathat.PostEZValue(name+".min", userkey, float64(h.Min())) + stathat.PostEZValue(name+".max", userkey, float64(h.Max())) + stathat.PostEZValue(name+".mean", userkey, float64(h.Mean())) + stathat.PostEZValue(name+".std-dev", userkey, float64(h.StdDev())) + stathat.PostEZValue(name+".50-percentile", userkey, float64(ps[0])) + stathat.PostEZValue(name+".75-percentile", userkey, float64(ps[1])) + stathat.PostEZValue(name+".95-percentile", userkey, float64(ps[2])) + stathat.PostEZValue(name+".99-percentile", userkey, float64(ps[3])) + stathat.PostEZValue(name+".999-percentile", userkey, float64(ps[4])) + case metrics.Meter: + m := metric.Snapshot() + stathat.PostEZCount(name+".count", userkey, int(m.Count())) + stathat.PostEZValue(name+".one-minute", userkey, float64(m.Rate1())) + stathat.PostEZValue(name+".five-minute", userkey, float64(m.Rate5())) + stathat.PostEZValue(name+".fifteen-minute", userkey, float64(m.Rate15())) + stathat.PostEZValue(name+".mean", userkey, float64(m.RateMean())) + case metrics.Timer: + t := metric.Snapshot() + ps := t.Percentiles([]float64{0.5, 0.75, 0.95, 0.99, 0.999}) + stathat.PostEZCount(name+".count", userkey, int(t.Count())) + stathat.PostEZValue(name+".min", userkey, float64(t.Min())) + stathat.PostEZValue(name+".max", userkey, float64(t.Max())) + stathat.PostEZValue(name+".mean", userkey, float64(t.Mean())) + stathat.PostEZValue(name+".std-dev", userkey, float64(t.StdDev())) + stathat.PostEZValue(name+".50-percentile", userkey, float64(ps[0])) + stathat.PostEZValue(name+".75-percentile", userkey, float64(ps[1])) + stathat.PostEZValue(name+".95-percentile", userkey, float64(ps[2])) + stathat.PostEZValue(name+".99-percentile", userkey, float64(ps[3])) + stathat.PostEZValue(name+".999-percentile", userkey, float64(ps[4])) + stathat.PostEZValue(name+".one-minute", userkey, float64(t.Rate1())) + stathat.PostEZValue(name+".five-minute", userkey, float64(t.Rate5())) + stathat.PostEZValue(name+".fifteen-minute", userkey, float64(t.Rate15())) + stathat.PostEZValue(name+".mean-rate", userkey, float64(t.RateMean())) + } + }) + return nil +} diff --git a/vendor/github.com/rcrowley/go-metrics/syslog.go b/vendor/github.com/rcrowley/go-metrics/syslog.go new file mode 100644 index 00000000000..693f190855c --- /dev/null +++ b/vendor/github.com/rcrowley/go-metrics/syslog.go @@ -0,0 +1,78 @@ +// +build !windows + +package metrics + +import ( + "fmt" + "log/syslog" + "time" +) + +// Output each metric in the given registry to syslog periodically using +// the given syslogger. +func Syslog(r Registry, d time.Duration, w *syslog.Writer) { + for _ = range time.Tick(d) { + r.Each(func(name string, i interface{}) { + switch metric := i.(type) { + case Counter: + w.Info(fmt.Sprintf("counter %s: count: %d", name, metric.Count())) + case Gauge: + w.Info(fmt.Sprintf("gauge %s: value: %d", name, metric.Value())) + case GaugeFloat64: + w.Info(fmt.Sprintf("gauge %s: value: %f", name, metric.Value())) + case Healthcheck: + metric.Check() + w.Info(fmt.Sprintf("healthcheck %s: error: %v", name, metric.Error())) + case Histogram: + h := metric.Snapshot() + ps := h.Percentiles([]float64{0.5, 0.75, 0.95, 0.99, 0.999}) + w.Info(fmt.Sprintf( + "histogram %s: count: %d min: %d max: %d mean: %.2f stddev: %.2f median: %.2f 75%%: %.2f 95%%: %.2f 99%%: %.2f 99.9%%: %.2f", + name, + h.Count(), + h.Min(), + h.Max(), + h.Mean(), + h.StdDev(), + ps[0], + ps[1], + ps[2], + ps[3], + ps[4], + )) + case Meter: + m := metric.Snapshot() + w.Info(fmt.Sprintf( + "meter %s: count: %d 1-min: %.2f 5-min: %.2f 15-min: %.2f mean: %.2f", + name, + m.Count(), + m.Rate1(), + m.Rate5(), + m.Rate15(), + m.RateMean(), + )) + case Timer: + t := metric.Snapshot() + ps := t.Percentiles([]float64{0.5, 0.75, 0.95, 0.99, 0.999}) + w.Info(fmt.Sprintf( + "timer %s: count: %d min: %d max: %d mean: %.2f stddev: %.2f median: %.2f 75%%: %.2f 95%%: %.2f 99%%: %.2f 99.9%%: %.2f 1-min: %.2f 5-min: %.2f 15-min: %.2f mean-rate: %.2f", + name, + t.Count(), + t.Min(), + t.Max(), + t.Mean(), + t.StdDev(), + ps[0], + ps[1], + ps[2], + ps[3], + ps[4], + t.Rate1(), + t.Rate5(), + t.Rate15(), + t.RateMean(), + )) + } + }) + } +} diff --git a/vendor/github.com/rcrowley/go-metrics/timer.go b/vendor/github.com/rcrowley/go-metrics/timer.go new file mode 100644 index 00000000000..17db8f8d202 --- /dev/null +++ b/vendor/github.com/rcrowley/go-metrics/timer.go @@ -0,0 +1,311 @@ +package metrics + +import ( + "sync" + "time" +) + +// Timers capture the duration and rate of events. +type Timer interface { + Count() int64 + Max() int64 + Mean() float64 + Min() int64 + Percentile(float64) float64 + Percentiles([]float64) []float64 + Rate1() float64 + Rate5() float64 + Rate15() float64 + RateMean() float64 + Snapshot() Timer + StdDev() float64 + Sum() int64 + Time(func()) + Update(time.Duration) + UpdateSince(time.Time) + Variance() float64 +} + +// GetOrRegisterTimer returns an existing Timer or constructs and registers a +// new StandardTimer. +func GetOrRegisterTimer(name string, r Registry) Timer { + if nil == r { + r = DefaultRegistry + } + return r.GetOrRegister(name, NewTimer).(Timer) +} + +// NewCustomTimer constructs a new StandardTimer from a Histogram and a Meter. +func NewCustomTimer(h Histogram, m Meter) Timer { + if UseNilMetrics { + return NilTimer{} + } + return &StandardTimer{ + histogram: h, + meter: m, + } +} + +// NewRegisteredTimer constructs and registers a new StandardTimer. +func NewRegisteredTimer(name string, r Registry) Timer { + c := NewTimer() + if nil == r { + r = DefaultRegistry + } + r.Register(name, c) + return c +} + +// NewTimer constructs a new StandardTimer using an exponentially-decaying +// sample with the same reservoir size and alpha as UNIX load averages. +func NewTimer() Timer { + if UseNilMetrics { + return NilTimer{} + } + return &StandardTimer{ + histogram: NewHistogram(NewExpDecaySample(1028, 0.015)), + meter: NewMeter(), + } +} + +// NilTimer is a no-op Timer. +type NilTimer struct { + h Histogram + m Meter +} + +// Count is a no-op. +func (NilTimer) Count() int64 { return 0 } + +// Max is a no-op. +func (NilTimer) Max() int64 { return 0 } + +// Mean is a no-op. +func (NilTimer) Mean() float64 { return 0.0 } + +// Min is a no-op. +func (NilTimer) Min() int64 { return 0 } + +// Percentile is a no-op. +func (NilTimer) Percentile(p float64) float64 { return 0.0 } + +// Percentiles is a no-op. +func (NilTimer) Percentiles(ps []float64) []float64 { + return make([]float64, len(ps)) +} + +// Rate1 is a no-op. +func (NilTimer) Rate1() float64 { return 0.0 } + +// Rate5 is a no-op. +func (NilTimer) Rate5() float64 { return 0.0 } + +// Rate15 is a no-op. +func (NilTimer) Rate15() float64 { return 0.0 } + +// RateMean is a no-op. +func (NilTimer) RateMean() float64 { return 0.0 } + +// Snapshot is a no-op. +func (NilTimer) Snapshot() Timer { return NilTimer{} } + +// StdDev is a no-op. +func (NilTimer) StdDev() float64 { return 0.0 } + +// Sum is a no-op. +func (NilTimer) Sum() int64 { return 0 } + +// Time is a no-op. +func (NilTimer) Time(func()) {} + +// Update is a no-op. +func (NilTimer) Update(time.Duration) {} + +// UpdateSince is a no-op. +func (NilTimer) UpdateSince(time.Time) {} + +// Variance is a no-op. +func (NilTimer) Variance() float64 { return 0.0 } + +// StandardTimer is the standard implementation of a Timer and uses a Histogram +// and Meter. +type StandardTimer struct { + histogram Histogram + meter Meter + mutex sync.Mutex +} + +// Count returns the number of events recorded. +func (t *StandardTimer) Count() int64 { + return t.histogram.Count() +} + +// Max returns the maximum value in the sample. +func (t *StandardTimer) Max() int64 { + return t.histogram.Max() +} + +// Mean returns the mean of the values in the sample. +func (t *StandardTimer) Mean() float64 { + return t.histogram.Mean() +} + +// Min returns the minimum value in the sample. +func (t *StandardTimer) Min() int64 { + return t.histogram.Min() +} + +// Percentile returns an arbitrary percentile of the values in the sample. +func (t *StandardTimer) Percentile(p float64) float64 { + return t.histogram.Percentile(p) +} + +// Percentiles returns a slice of arbitrary percentiles of the values in the +// sample. +func (t *StandardTimer) Percentiles(ps []float64) []float64 { + return t.histogram.Percentiles(ps) +} + +// Rate1 returns the one-minute moving average rate of events per second. +func (t *StandardTimer) Rate1() float64 { + return t.meter.Rate1() +} + +// Rate5 returns the five-minute moving average rate of events per second. +func (t *StandardTimer) Rate5() float64 { + return t.meter.Rate5() +} + +// Rate15 returns the fifteen-minute moving average rate of events per second. +func (t *StandardTimer) Rate15() float64 { + return t.meter.Rate15() +} + +// RateMean returns the meter's mean rate of events per second. +func (t *StandardTimer) RateMean() float64 { + return t.meter.RateMean() +} + +// Snapshot returns a read-only copy of the timer. +func (t *StandardTimer) Snapshot() Timer { + t.mutex.Lock() + defer t.mutex.Unlock() + return &TimerSnapshot{ + histogram: t.histogram.Snapshot().(*HistogramSnapshot), + meter: t.meter.Snapshot().(*MeterSnapshot), + } +} + +// StdDev returns the standard deviation of the values in the sample. +func (t *StandardTimer) StdDev() float64 { + return t.histogram.StdDev() +} + +// Sum returns the sum in the sample. +func (t *StandardTimer) Sum() int64 { + return t.histogram.Sum() +} + +// Record the duration of the execution of the given function. +func (t *StandardTimer) Time(f func()) { + ts := time.Now() + f() + t.Update(time.Since(ts)) +} + +// Record the duration of an event. +func (t *StandardTimer) Update(d time.Duration) { + t.mutex.Lock() + defer t.mutex.Unlock() + t.histogram.Update(int64(d)) + t.meter.Mark(1) +} + +// Record the duration of an event that started at a time and ends now. +func (t *StandardTimer) UpdateSince(ts time.Time) { + t.mutex.Lock() + defer t.mutex.Unlock() + t.histogram.Update(int64(time.Since(ts))) + t.meter.Mark(1) +} + +// Variance returns the variance of the values in the sample. +func (t *StandardTimer) Variance() float64 { + return t.histogram.Variance() +} + +// TimerSnapshot is a read-only copy of another Timer. +type TimerSnapshot struct { + histogram *HistogramSnapshot + meter *MeterSnapshot +} + +// Count returns the number of events recorded at the time the snapshot was +// taken. +func (t *TimerSnapshot) Count() int64 { return t.histogram.Count() } + +// Max returns the maximum value at the time the snapshot was taken. +func (t *TimerSnapshot) Max() int64 { return t.histogram.Max() } + +// Mean returns the mean value at the time the snapshot was taken. +func (t *TimerSnapshot) Mean() float64 { return t.histogram.Mean() } + +// Min returns the minimum value at the time the snapshot was taken. +func (t *TimerSnapshot) Min() int64 { return t.histogram.Min() } + +// Percentile returns an arbitrary percentile of sampled values at the time the +// snapshot was taken. +func (t *TimerSnapshot) Percentile(p float64) float64 { + return t.histogram.Percentile(p) +} + +// Percentiles returns a slice of arbitrary percentiles of sampled values at +// the time the snapshot was taken. +func (t *TimerSnapshot) Percentiles(ps []float64) []float64 { + return t.histogram.Percentiles(ps) +} + +// Rate1 returns the one-minute moving average rate of events per second at the +// time the snapshot was taken. +func (t *TimerSnapshot) Rate1() float64 { return t.meter.Rate1() } + +// Rate5 returns the five-minute moving average rate of events per second at +// the time the snapshot was taken. +func (t *TimerSnapshot) Rate5() float64 { return t.meter.Rate5() } + +// Rate15 returns the fifteen-minute moving average rate of events per second +// at the time the snapshot was taken. +func (t *TimerSnapshot) Rate15() float64 { return t.meter.Rate15() } + +// RateMean returns the meter's mean rate of events per second at the time the +// snapshot was taken. +func (t *TimerSnapshot) RateMean() float64 { return t.meter.RateMean() } + +// Snapshot returns the snapshot. +func (t *TimerSnapshot) Snapshot() Timer { return t } + +// StdDev returns the standard deviation of the values at the time the snapshot +// was taken. +func (t *TimerSnapshot) StdDev() float64 { return t.histogram.StdDev() } + +// Sum returns the sum at the time the snapshot was taken. +func (t *TimerSnapshot) Sum() int64 { return t.histogram.Sum() } + +// Time panics. +func (*TimerSnapshot) Time(func()) { + panic("Time called on a TimerSnapshot") +} + +// Update panics. +func (*TimerSnapshot) Update(time.Duration) { + panic("Update called on a TimerSnapshot") +} + +// UpdateSince panics. +func (*TimerSnapshot) UpdateSince(time.Time) { + panic("UpdateSince called on a TimerSnapshot") +} + +// Variance returns the variance of the values at the time the snapshot was +// taken. +func (t *TimerSnapshot) Variance() float64 { return t.histogram.Variance() } diff --git a/vendor/github.com/rcrowley/go-metrics/validate.sh b/vendor/github.com/rcrowley/go-metrics/validate.sh new file mode 100755 index 00000000000..f6499982e58 --- /dev/null +++ b/vendor/github.com/rcrowley/go-metrics/validate.sh @@ -0,0 +1,10 @@ +#!/bin/bash + +set -e + +# check there are no formatting issues +GOFMT_LINES=`gofmt -l . | wc -l | xargs` +test $GOFMT_LINES -eq 0 || echo "gofmt needs to be run, ${GOFMT_LINES} files have issues" + +# run the tests for the root package +go test . diff --git a/vendor/github.com/rcrowley/go-metrics/writer.go b/vendor/github.com/rcrowley/go-metrics/writer.go new file mode 100644 index 00000000000..091e971d2e6 --- /dev/null +++ b/vendor/github.com/rcrowley/go-metrics/writer.go @@ -0,0 +1,100 @@ +package metrics + +import ( + "fmt" + "io" + "sort" + "time" +) + +// Write sorts writes each metric in the given registry periodically to the +// given io.Writer. +func Write(r Registry, d time.Duration, w io.Writer) { + for _ = range time.Tick(d) { + WriteOnce(r, w) + } +} + +// WriteOnce sorts and writes metrics in the given registry to the given +// io.Writer. +func WriteOnce(r Registry, w io.Writer) { + var namedMetrics namedMetricSlice + r.Each(func(name string, i interface{}) { + namedMetrics = append(namedMetrics, namedMetric{name, i}) + }) + + sort.Sort(namedMetrics) + for _, namedMetric := range namedMetrics { + switch metric := namedMetric.m.(type) { + case Counter: + fmt.Fprintf(w, "counter %s\n", namedMetric.name) + fmt.Fprintf(w, " count: %9d\n", metric.Count()) + case Gauge: + fmt.Fprintf(w, "gauge %s\n", namedMetric.name) + fmt.Fprintf(w, " value: %9d\n", metric.Value()) + case GaugeFloat64: + fmt.Fprintf(w, "gauge %s\n", namedMetric.name) + fmt.Fprintf(w, " value: %f\n", metric.Value()) + case Healthcheck: + metric.Check() + fmt.Fprintf(w, "healthcheck %s\n", namedMetric.name) + fmt.Fprintf(w, " error: %v\n", metric.Error()) + case Histogram: + h := metric.Snapshot() + ps := h.Percentiles([]float64{0.5, 0.75, 0.95, 0.99, 0.999}) + fmt.Fprintf(w, "histogram %s\n", namedMetric.name) + fmt.Fprintf(w, " count: %9d\n", h.Count()) + fmt.Fprintf(w, " min: %9d\n", h.Min()) + fmt.Fprintf(w, " max: %9d\n", h.Max()) + fmt.Fprintf(w, " mean: %12.2f\n", h.Mean()) + fmt.Fprintf(w, " stddev: %12.2f\n", h.StdDev()) + fmt.Fprintf(w, " median: %12.2f\n", ps[0]) + fmt.Fprintf(w, " 75%%: %12.2f\n", ps[1]) + fmt.Fprintf(w, " 95%%: %12.2f\n", ps[2]) + fmt.Fprintf(w, " 99%%: %12.2f\n", ps[3]) + fmt.Fprintf(w, " 99.9%%: %12.2f\n", ps[4]) + case Meter: + m := metric.Snapshot() + fmt.Fprintf(w, "meter %s\n", namedMetric.name) + fmt.Fprintf(w, " count: %9d\n", m.Count()) + fmt.Fprintf(w, " 1-min rate: %12.2f\n", m.Rate1()) + fmt.Fprintf(w, " 5-min rate: %12.2f\n", m.Rate5()) + fmt.Fprintf(w, " 15-min rate: %12.2f\n", m.Rate15()) + fmt.Fprintf(w, " mean rate: %12.2f\n", m.RateMean()) + case Timer: + t := metric.Snapshot() + ps := t.Percentiles([]float64{0.5, 0.75, 0.95, 0.99, 0.999}) + fmt.Fprintf(w, "timer %s\n", namedMetric.name) + fmt.Fprintf(w, " count: %9d\n", t.Count()) + fmt.Fprintf(w, " min: %9d\n", t.Min()) + fmt.Fprintf(w, " max: %9d\n", t.Max()) + fmt.Fprintf(w, " mean: %12.2f\n", t.Mean()) + fmt.Fprintf(w, " stddev: %12.2f\n", t.StdDev()) + fmt.Fprintf(w, " median: %12.2f\n", ps[0]) + fmt.Fprintf(w, " 75%%: %12.2f\n", ps[1]) + fmt.Fprintf(w, " 95%%: %12.2f\n", ps[2]) + fmt.Fprintf(w, " 99%%: %12.2f\n", ps[3]) + fmt.Fprintf(w, " 99.9%%: %12.2f\n", ps[4]) + fmt.Fprintf(w, " 1-min rate: %12.2f\n", t.Rate1()) + fmt.Fprintf(w, " 5-min rate: %12.2f\n", t.Rate5()) + fmt.Fprintf(w, " 15-min rate: %12.2f\n", t.Rate15()) + fmt.Fprintf(w, " mean rate: %12.2f\n", t.RateMean()) + } + } +} + +type namedMetric struct { + name string + m interface{} +} + +// namedMetricSlice is a slice of namedMetrics that implements sort.Interface. +type namedMetricSlice []namedMetric + +func (nms namedMetricSlice) Len() int { return len(nms) } + +func (nms namedMetricSlice) Swap(i, j int) { nms[i], nms[j] = nms[j], nms[i] } + +func (nms namedMetricSlice) Less(i, j int) bool { + return nms[i].name < nms[j].name +}