93 lines
2.9 KiB
Go
93 lines
2.9 KiB
Go
/*
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Copyright 2021 Alibaba Group Holding Limited.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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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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*/
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package polardbx
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import (
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"net/http"
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"os"
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"sync/atomic"
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"github.com/go-kit/kit/log/level"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/prometheus/client_golang/prometheus/collectors"
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"github.com/prometheus/client_golang/prometheus/promhttp"
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"github.com/prometheus/common/promlog"
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"github.com/prometheus/common/version"
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"github.com/alibaba/polardbx-operator/pkg/exporter/extensions/jvm"
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"github.com/alibaba/polardbx-operator/pkg/exporter/process"
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)
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func Start(listenAddr string, metricsPath string, mgrPort int, enableProcExporter, enableJvmStatExporter bool) {
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loggerConfig := &promlog.Config{
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Level: &promlog.AllowedLevel{},
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Format: &promlog.AllowedFormat{},
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}
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_ = loggerConfig.Level.Set("info")
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_ = loggerConfig.Format.Set("logfmt")
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logger := promlog.New(loggerConfig)
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level.Info(logger).Log("msg", "Starting polardbx exporter", "version", version.Info())
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level.Info(logger).Log("msg", "build context", "context", version.BuildContext())
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tddlServerPidFn := func() func() (int, error) {
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lastPid := int32(-1)
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return func() (int, error) {
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pid, err := process.CheckJavaProcessOrFind(int(atomic.LoadInt32(&lastPid)), "TddlLauncher")
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if err != nil {
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return -1, err
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}
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atomic.StoreInt32(&lastPid, int32(pid))
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return pid, err
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}
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}()
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// Register process exporter for tddl process if enabled.
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if enableProcExporter {
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prometheus.MustRegister(collectors.NewProcessCollector(collectors.ProcessCollectorOpts{
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PidFn: tddlServerPidFn,
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Namespace: namespace,
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}))
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}
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// Register jvmstat exporter for tddl process if enabled.
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if enableJvmStatExporter {
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prometheus.MustRegister(jvm.NewJvmStatExporter(jvm.JvmStatExporterOpt{
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PidFn: tddlServerPidFn,
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Namespace: namespace,
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}))
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}
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// Register the prometheus collector
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exporter := NewExporter(mgrPort, logger)
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err := exporter.TryInit()
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if err != nil {
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level.Error(logger).Log("msg", "Error initializing exporter. Try lazy init.", "err", err)
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}
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prometheus.MustRegister(exporter)
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prometheus.MustRegister(version.NewCollector("polardbx_exporter"))
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// Listen and serve
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level.Info(logger).Log("msg", "Listening on address", "address", listenAddr)
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http.Handle(metricsPath, promhttp.Handler())
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if err := http.ListenAndServe(listenAddr, nil); err != nil {
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level.Error(logger).Log("msg", "Error starting HTTP server", "err", err)
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os.Exit(1)
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}
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}
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