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Merge pull request #17050 from couchand/feature/distsql-query-count
distsql, ui: query count metrics
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| // Copyright 2017 The Cockroach Authors. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or | ||
| // implied. See the License for the specific language governing | ||
| // permissions and limitations under the License. | ||
| // | ||
| // Author: Andrew Dona-Couch ([email protected]) | ||
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| package distsqlrun | ||
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| import ( | ||
| "time" | ||
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| "github.com/cockroachdb/cockroach/pkg/util/metric" | ||
| ) | ||
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| // DistSQLMetrics contains pointers to the metrics for | ||
| // monitoring DistSQL processing. | ||
| type DistSQLMetrics struct { | ||
| QueriesActive *metric.Gauge | ||
| QueriesTotal *metric.Counter | ||
| FlowsActive *metric.Gauge | ||
| FlowsTotal *metric.Counter | ||
| MaxBytesHist *metric.Histogram | ||
| CurBytesCount *metric.Counter | ||
| } | ||
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| // MetricStruct implements the metrics.Struct interface. | ||
| func (DistSQLMetrics) MetricStruct() {} | ||
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| var _ metric.Struct = DistSQLMetrics{} | ||
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| var ( | ||
| metaQueriesActive = metric.Metadata{ | ||
| Name: "sql.distsql.queries.active", | ||
| Help: "Number of distributed SQL queries currently active"} | ||
| metaQueriesTotal = metric.Metadata{ | ||
| Name: "sql.distsql.queries.total", | ||
| Help: "Number of distributed SQL queries executed"} | ||
| metaFlowsActive = metric.Metadata{ | ||
| Name: "sql.distsql.flows.active", | ||
| Help: "Number of distributed SQL flows currently active"} | ||
| metaFlowsTotal = metric.Metadata{ | ||
| Name: "sql.distsql.flows.total", | ||
| Help: "Number of distributed SQL flows executed"} | ||
| metaMemMaxBytes = metric.Metadata{ | ||
| Name: "sql.mem.distsql.max", | ||
| Help: "Memory usage per sql statement for distsql"} | ||
| metaMemCurBytes = metric.Metadata{ | ||
| Name: "sql.mem.distsql.current", | ||
| Help: "Current sql statement memory usage for distsql"} | ||
| ) | ||
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| // See pkg/sql/mem_metrics.go | ||
| // log10int64times1000 = log10(math.MaxInt64) * 1000, rounded up somewhat | ||
| const log10int64times1000 = 19 * 1000 | ||
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| // MakeDistSQLMetrics instantiates the metrics holder for DistSQL monitoring. | ||
| func MakeDistSQLMetrics(histogramWindow time.Duration) DistSQLMetrics { | ||
| return DistSQLMetrics{ | ||
| QueriesActive: metric.NewGauge(metaQueriesActive), | ||
| QueriesTotal: metric.NewCounter(metaQueriesTotal), | ||
| FlowsActive: metric.NewGauge(metaFlowsActive), | ||
| FlowsTotal: metric.NewCounter(metaFlowsTotal), | ||
| MaxBytesHist: metric.NewHistogram(metaMemMaxBytes, histogramWindow, log10int64times1000, 3), | ||
| CurBytesCount: metric.NewCounter(metaMemCurBytes), | ||
| } | ||
| } | ||
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| // QueryStart registers the start of a new DistSQL query. | ||
| func (m *DistSQLMetrics) QueryStart() { | ||
| m.QueriesActive.Inc(1) | ||
| m.QueriesTotal.Inc(1) | ||
| } | ||
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| // QueryStop registers the end of a DistSQL query. | ||
| func (m *DistSQLMetrics) QueryStop() { | ||
| m.QueriesActive.Dec(1) | ||
| } | ||
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| // FlowStart registers the start of a new DistSQL flow. | ||
| func (m *DistSQLMetrics) FlowStart() { | ||
| m.FlowsActive.Inc(1) | ||
| m.FlowsTotal.Inc(1) | ||
| } | ||
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| // FlowStop registers the end of a DistSQL flow. | ||
| func (m *DistSQLMetrics) FlowStop() { | ||
| m.FlowsActive.Dec(1) | ||
| } |
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