[DBNode] - Add support for batching fetches across namespaces

scripts/docker-integration-tests/simple_v2_batch_apis/docker-compose.yml

@@ -0,0 +1,26 @@
+version: "3.5"
+services:
+  dbnode01:
+    expose:
+      - "9000-9004"
+      - "2379-2380"
+    ports:
+      - "0.0.0.0:9000-9004:9000-9004"
+      - "0.0.0.0:2379-2380:2379-2380"
+    networks:
+      - backend
+    image: "m3dbnode_integration:${REVISION}"
+  coordinator01:
+    expose:
+      - "7201"
+      - "7203"
+    ports:
+      - "0.0.0.0:7201:7201"
+      - "0.0.0.0:7203:7203"
+    networks:
+      - backend
+    image: "m3coordinator_integration:${REVISION}"
+    volumes:
+      - "./:/etc/m3coordinator/"
+networks:
+  backend:

scripts/docker-integration-tests/simple_v2_batch_apis/m3coordinator.yml

@@ -0,0 +1,47 @@
+listenAddress:
+  type: "config"
+  value: "0.0.0.0:7201"
+
+logging:
+  level: info
+
+metrics:
+  scope:
+    prefix: "coordinator"
+  prometheus:
+    handlerPath: /metrics
+    listenAddress: 0.0.0.0:7203 # until https://github.com/m3db/m3/issues/682 is resolved
+  sanitization: prometheus
+  samplingRate: 1.0
+  extended: none
+
+limits:
+  perQuery:
+    maxFetchedSeries: 100
+
+clusters:
+  - namespaces:
+      - namespace: agg
+        type: aggregated
+        retention: 10h
+        resolution: 15s
+      - namespace: unagg
+        type: unaggregated
+        retention: 10m
+    client:
+      config:
+        service:
+          env: default_env
+          zone: embedded
+          service: m3db
+          cacheDir: /var/lib/m3kv
+          etcdClusters:
+            - zone: embedded
+              endpoints:
+                - dbnode01:2379
+      writeConsistencyLevel: majority
+      readConsistencyLevel: unstrict_majority
+      useV2BatchAPIs: true
+
+tagOptions:
+  idScheme: quoted

scripts/docker-integration-tests/simple_v2_batch_apis/test.sh

@@ -0,0 +1,188 @@
+#!/usr/bin/env bash
+
+set -xe
+
+source $GOPATH/src/github.com/m3db/m3/scripts/docker-integration-tests/common.sh
+REVISION=$(git rev-parse HEAD)
+COMPOSE_FILE=$GOPATH/src/github.com/m3db/m3/scripts/docker-integration-tests/prometheus/docker-compose.yml
+# quay.io/m3db/prometheus_remote_client_golang @ v0.4.3
+PROMREMOTECLI_IMAGE=quay.io/m3db/prometheus_remote_client_golang@sha256:fc56df819bff9a5a087484804acf3a584dd4a78c68900c31a28896ed66ca7e7b
+JQ_IMAGE=realguess/jq:1.4@sha256:300c5d9fb1d74154248d155ce182e207cf6630acccbaadd0168e18b15bfaa786
+METRIC_NAME_TEST_TOO_OLD=foo
+METRIC_NAME_TEST_RESTRICT_WRITE=bar
+export REVISION
+
+echo "Pull containers required for test"
+docker pull $PROMREMOTECLI_IMAGE
+docker pull $JQ_IMAGE
+
+echo "Run m3dbnode and m3coordinator containers"
+docker-compose -f ${COMPOSE_FILE} up -d dbnode01
+docker-compose -f ${COMPOSE_FILE} up -d coordinator01
+
+function defer {
+  docker-compose -f ${COMPOSE_FILE} down || echo "unable to shutdown containers" # CI fails to stop all containers sometimes
+}
+trap defer EXIT
+
+setup_single_m3db_node
+
+echo "Start Prometheus containers"
+docker-compose -f ${COMPOSE_FILE} up -d prometheus01
+
+function test_prometheus_remote_read {
+  # Ensure Prometheus can proxy a Prometheus query
+  echo "Wait until the remote write endpoint generates and allows for data to be queried"
+  ATTEMPTS=50 TIMEOUT=2 MAX_TIMEOUT=4 retry_with_backoff  \
+    '[[ $(curl -sSf 0.0.0.0:9090/api/v1/query?query=prometheus_remote_storage_succeeded_samples_total | jq -r .data.result[].value[1]) -gt 100 ]]'
+}
+
+function test_prometheus_remote_write_multi_namespaces {
+  # Make sure we're proxying writes to the unaggregated namespace
+  echo "Wait until data begins being written to remote storage for the unaggregated namespace"
+  ATTEMPTS=50 TIMEOUT=2 MAX_TIMEOUT=4 retry_with_backoff  \
+    '[[ $(curl -sSf 0.0.0.0:9090/api/v1/query?query=database_write_tagged_success\\{namespace=\"unagg\"\\} | jq -r .data.result[0].value[1]) -gt 0 ]]'
+
+  # Make sure we're proxying writes to the aggregated namespace
+  echo "Wait until data begins being written to remote storage for the aggregated namespace"
+  ATTEMPTS=50 TIMEOUT=2 MAX_TIMEOUT=4 retry_with_backoff  \
+    '[[ $(curl -sSf 0.0.0.0:9090/api/v1/query?query=database_write_tagged_success\\{namespace=\"agg\"\\} | jq -r .data.result[0].value[1]) -gt 0 ]]'
+}
+
+function prometheus_remote_write {
+  local metric_name=$1
+  local datapoint_timestamp=$2
+  local datapoint_value=$3
+  local expect_success=$4
+  local expect_success_err=$5
+  local expect_status=$6
+  local expect_status_err=$7
+  local metrics_type=$8
+  local metrics_storage_policy=$9
+
+  network=$(docker network ls --format '{{.ID}}' | tail -n 1)
+  out=$((docker run -it --rm --network $network           \
+    $PROMREMOTECLI_IMAGE                                  \
+    -u http://coordinator01:7201/api/v1/prom/remote/write \
+    -t __name__:${metric_name}                            \
+    -h "M3-Metrics-Type: ${metrics_type}"                 \
+    -h "M3-Storage-Policy: ${metrics_storage_policy}"     \
+    -d ${datapoint_timestamp},${datapoint_value} | grep -v promremotecli_log) || true)
+  success=$(echo $out | grep -v promremotecli_log | docker run --rm -i $JQ_IMAGE jq .success)
+  status=$(echo $out | grep -v promremotecli_log | docker run --rm -i $JQ_IMAGE jq .statusCode)
+  if [[ "$success" != "$expect_success" ]]; then
+    echo $expect_success_err
+    return 1
+  fi
+  if [[ "$status" != "$expect_status" ]]; then
+    echo "${expect_status_err}: actual=${status}"
+    return 1
+  fi
+  echo "Returned success=${success}, status=${status} as expected"
+  return 0
+}
+
+function test_prometheus_remote_write_too_old_returns_400_status_code {
+  # Test writing too far into the past returns an HTTP 400 status code
+  echo "Test write into the past returns HTTP 400"
+  hour_ago=$(expr $(date +"%s") - 3600) 
+  prometheus_remote_write \
+    $METRIC_NAME_TEST_TOO_OLD $hour_ago 3.142 \
+    false "Expected request to fail" \
+    400 "Expected request to return status code 400"
+}
+
+function test_prometheus_remote_write_restrict_metrics_type {
+  # Test we can specify metrics type
+  echo "Test write with unaggregated metrics type works as expected"
+  prometheus_remote_write \
+    $METRIC_NAME_TEST_RESTRICT_WRITE now 42.42 \
+    true "Expected request to succeed" \
+    200 "Expected request to return status code 200" \
+    unaggregated
+
+  echo "Test write with aggregated metrics type works as expected"
+  prometheus_remote_write \
+    $METRIC_NAME_TEST_RESTRICT_WRITE now 84.84 \
+    true "Expected request to succeed" \
+    200 "Expected request to return status code 200" \
+    aggregated 15s:10h
+}
+
+function test_query_limits_applied {
+  # Test the default series limit applied when directly querying 
+  # coordinator (limit set to 100 in m3coordinator.yml)
+  echo "Test query limit with coordinator defaults"
+  ATTEMPTS=50 TIMEOUT=2 MAX_TIMEOUT=4 retry_with_backoff  \
+    '[[ $(curl -s 0.0.0.0:7201/api/v1/query?query=\\{name!=\"\"\\} | jq -r ".data.result | length") -eq 100 ]]'
+
+  # Test the default series limit applied when directly querying 
+  # coordinator (limit set by header)
+  echo "Test query limit with coordinator limit header"
+  ATTEMPTS=50 TIMEOUT=2 MAX_TIMEOUT=4 retry_with_backoff  \
+    '[[ $(curl -s -H "M3-Limit-Max-Series: 10" 0.0.0.0:7201/api/v1/query?query=\\{name!=\"\"\\} | jq -r ".data.result | length") -eq 10 ]]'
+}
+
+function prometheus_query_native {
+  local endpoint=${endpoint:-}
+  local query=${query:-}
+  local params=${params:-}
+  local metrics_type=${metrics_type:-}
+  local metrics_storage_policy=${metrics_storage_policy:-}
+  local jq_path=${jq_path:-}
+  local expected_value=${expected_value:-}
+
+  params_prefixed=""
+  if [[ "$params" != "" ]]; then
+    params_prefixed='&'"${params}"
+  fi
+
+  result=$(curl -s                                    \
+    -H "M3-Metrics-Type: ${metrics_type}"             \
+    -H "M3-Storage-Policy: ${metrics_storage_policy}" \
+    "0.0.0.0:7201/api/v1/${endpoint}?query=${query}${params_prefixed}" | jq -r "${jq_path}")
+  test "$result" = "$expected_value"
+  return $?
+}
+
+function test_query_restrict_metrics_type {
+  now=$(date +"%s")
+  hour_ago=$(expr $now - 3600) 
+  step="30s"
+  params_instant=""
+  params_range="start=${hour_ago}"'&'"end=${now}"'&'"step=30s"
+  jq_path_instant=".data.result[0].value[1]"
+  jq_path_range=".data.result[0].values[][1]"
+
+  # Test restricting to unaggregated metrics
+  echo "Test query restrict to unaggregated metrics type (instant)"
+  ATTEMPTS=50 TIMEOUT=2 MAX_TIMEOUT=4 \
+    endpoint=query query="$METRIC_NAME_TEST_RESTRICT_WRITE" params="$params_instant" \
+    metrics_type="unaggregated" jq_path="$jq_path_instant" expected_value="42.42" \
+    retry_with_backoff prometheus_query_native
+  echo "Test query restrict to unaggregated metrics type (range)"
+  ATTEMPTS=50 TIMEOUT=2 MAX_TIMEOUT=4 \
+    endpoint=query_range query="$METRIC_NAME_TEST_RESTRICT_WRITE" params="$params_range" \
+    metrics_type="unaggregated" jq_path="$jq_path_range" expected_value="42.42" \
+    retry_with_backoff prometheus_query_native
+
+  # Test restricting to aggregated metrics
+  echo "Test query restrict to aggregated metrics type (instant)"
+  ATTEMPTS=50 TIMEOUT=2 MAX_TIMEOUT=4 \
+    endpoint=query query="$METRIC_NAME_TEST_RESTRICT_WRITE" params="$params_instant" \
+    metrics_type="aggregated" metrics_storage_policy="15s:10h" jq_path="$jq_path_instant" expected_value="84.84" \
+    retry_with_backoff prometheus_query_native
+  echo "Test query restrict to aggregated metrics type (range)"
+  ATTEMPTS=50 TIMEOUT=2 MAX_TIMEOUT=4 \
+    endpoint=query_range query="$METRIC_NAME_TEST_RESTRICT_WRITE" params="$params_range" \
+    metrics_type="aggregated" metrics_storage_policy="15s:10h" jq_path="$jq_path_range" expected_value="84.84" \
+    retry_with_backoff prometheus_query_native
+}
+
+# Run all tests
+test_prometheus_remote_read
+test_prometheus_remote_write_multi_namespaces
+test_prometheus_remote_write_too_old_returns_400_status_code
+test_prometheus_remote_write_restrict_metrics_type
+test_query_limits_applied
+test_query_restrict_metrics_type

src/dbnode/client/fetch_batch.go

@@ -28,9 +28,10 @@ import (
 
 type fetchBatchOp struct {
 	checked.RefCount
-	request       rpc.FetchBatchRawRequest
-	completionFns []completionFn
-	finalizer     fetchBatchOpFinalizer
+	request           rpc.FetchBatchRawRequest
+	requestV2Elements []rpc.FetchBatchRawV2RequestElement
+	completionFns     []completionFn
+	finalizer         fetchBatchOpFinalizer
 }
 
 func (f *fetchBatchOp) reset() {
@@ -46,20 +47,40 @@ func (f *fetchBatchOp) reset() {
 		f.completionFns[i] = nil
 	}
 	f.completionFns = f.completionFns[:0]
+
+	for i := range f.requestV2Elements {
+		f.requestV2Elements[i].NameSpace = 0
+		f.requestV2Elements[i].RangeStart = 0
+		f.requestV2Elements[i].RangeEnd = 0
+		f.requestV2Elements[i].ID = nil
+		f.requestV2Elements[i].RangeTimeType = 0
+	}
+	f.requestV2Elements = f.requestV2Elements[:0]
+
 	f.DecWrites()
 }
 
 func (f *fetchBatchOp) append(namespace, id []byte, completionFn completionFn) {
 	f.IncWrites()
 	f.request.NameSpace = namespace
 	f.request.Ids = append(f.request.Ids, id)
+	f.requestV2Elements = append(f.requestV2Elements, rpc.FetchBatchRawV2RequestElement{
+		// NameSpace filled in by the host queue later.
+		RangeStart:    f.request.RangeStart,
+		RangeEnd:      f.request.RangeEnd,
+		ID:            id,
+		RangeTimeType: f.request.RangeTimeType,
+	})
 	f.completionFns = append(f.completionFns, completionFn)
 	f.DecWrites()
 }
 
 func (f *fetchBatchOp) Size() int {
 	f.IncReads()
 	value := len(f.request.Ids)
+	if value == 0 {
+		value = len(f.requestV2Elements)
+	}
 	f.DecReads()
 	return value
 }

src/dbnode/client/fetch_batch_element_array_pool.go

@@ -0,0 +1,67 @@
+// Copyright (c) 2019 Uber Technologies, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package client
+
+import (
+	"github.com/m3db/m3/src/dbnode/generated/thrift/rpc"
+	"github.com/m3db/m3/src/x/pool"
+)
+
+type fetchBatchRawV2RequestElementArrayPool interface {
+	// Init pool
+	Init()
+
+	// Get an array of WriteBatchV2RawRequestElement objects
+	Get() []*rpc.FetchBatchRawV2RequestElement
+
+	// Put an array of FetchBatchRawV2RequestElement objects
+	Put(w []*rpc.FetchBatchRawV2RequestElement)
+}
+
+type poolOfFetchBatchRawV2RequestElementArray struct {
+	pool     pool.ObjectPool
+	capacity int
+}
+
+func newFetchBatchRawV2RequestElementArrayPool(
+	opts pool.ObjectPoolOptions, capacity int) fetchBatchRawV2RequestElementArrayPool {
+
+	p := pool.NewObjectPool(opts)
+	return &poolOfFetchBatchRawV2RequestElementArray{p, capacity}
+}
+
+func (p *poolOfFetchBatchRawV2RequestElementArray) Init() {
+	p.pool.Init(func() interface{} {
+		return make([]*rpc.FetchBatchRawV2RequestElement, 0, p.capacity)
+	})
+}
+
+func (p *poolOfFetchBatchRawV2RequestElementArray) Get() []*rpc.FetchBatchRawV2RequestElement {
+	return p.pool.Get().([]*rpc.FetchBatchRawV2RequestElement)
+}
+
+func (p *poolOfFetchBatchRawV2RequestElementArray) Put(w []*rpc.FetchBatchRawV2RequestElement) {
+	for i := range w {
+		w[i] = nil
+	}
+	w = w[:0]
+	p.pool.Put(w)
+}