74 lines
1.9 KiB
Go
74 lines
1.9 KiB
Go
// Copyright 2016 PingCAP, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package server
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import (
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"strconv"
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"github.com/juju/errors"
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"github.com/pingcap/tidb/terror"
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"github.com/prometheus/client_golang/prometheus"
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)
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var (
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queryHistogram = prometheus.NewHistogram(
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prometheus.HistogramOpts{
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Namespace: "tidb",
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Subsystem: "server",
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Name: "handle_query_duration_seconds",
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Help: "Bucketed histogram of processing time (s) of handled queries.",
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Buckets: prometheus.ExponentialBuckets(0.0005, 2, 22),
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})
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queryCounter = prometheus.NewCounterVec(
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prometheus.CounterOpts{
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Namespace: "tidb",
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Subsystem: "server",
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Name: "query_total",
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Help: "Counter of queries.",
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}, []string{"type", "status"})
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connGauge = prometheus.NewGauge(
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prometheus.GaugeOpts{
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Namespace: "tidb",
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Subsystem: "server",
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Name: "connections",
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Help: "Number of connections.",
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})
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executeErrorCounter = prometheus.NewCounterVec(
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prometheus.CounterOpts{
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Namespace: "tidb",
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Subsystem: "server",
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Name: "execute_error",
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Help: "Counter of execute errors.",
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}, []string{"type"})
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)
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func init() {
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prometheus.MustRegister(queryHistogram)
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prometheus.MustRegister(queryCounter)
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prometheus.MustRegister(connGauge)
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}
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func executeErrorToLabel(err error) string {
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err = errors.Cause(err)
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switch x := err.(type) {
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case *terror.Error:
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return x.Class().String() + ":" + strconv.Itoa(int(x.Code()))
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default:
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return "unknown"
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}
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}
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