mirror of https://github.com/etcd-io/dbtester.git
104 lines
2.7 KiB
Go
104 lines
2.7 KiB
Go
// Copyright 2017 CoreOS, 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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// 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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package agent
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import (
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"fmt"
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"os"
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"time"
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"github.com/gyuho/linux-inspect/inspect"
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"github.com/gyuho/linux-inspect/top"
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"go.uber.org/zap"
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)
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// startMetrics starts collecting metrics.
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func startMetrics(fs *flags, t *transporterServer) (err error) {
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if fs == nil || t == nil || t.cmd == nil {
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return fmt.Errorf("cannot find process to track (%+v, %+v)", fs, t)
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}
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t.lg.Info(
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"starting collecting system metrics",
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zap.String("database", t.req.DatabaseID.String()),
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zap.String("disk-device", fs.diskDevice),
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zap.String("network-device", fs.networkInterface),
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zap.Int64("pid", t.pid),
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)
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if err = os.RemoveAll(fs.systemMetricsCSV); err != nil {
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return err
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}
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if err = toFile(fmt.Sprintf("%d", t.req.CurrentClientNumber), t.clientNumPath); err != nil {
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return err
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}
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tcfg := &top.Config{
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Exec: top.DefaultExecPath,
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IntervalSecond: 1,
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PID: t.pid,
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}
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t.metricsCSV, err = inspect.NewCSV(
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fs.systemMetricsCSV,
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t.pid,
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fs.diskDevice,
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fs.networkInterface,
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t.clientNumPath,
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tcfg,
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)
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if err := t.metricsCSV.Add(); err != nil {
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return err
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}
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go func() {
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for {
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select {
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case <-time.After(time.Second):
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if err := t.metricsCSV.Add(); err != nil {
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t.lg.Warn("inspect.CSV.Add error", zap.Error(err))
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continue
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}
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case <-t.uploadSig:
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t.lg.Info("upload requested, saving CSV", zap.String("path", t.metricsCSV.FilePath))
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if err := t.metricsCSV.Save(); err != nil {
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t.lg.Warn("failed to save CSV", zap.Error(err))
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} else {
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t.lg.Info("saved CSV", zap.String("path", t.metricsCSV.FilePath))
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}
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interpolated, err := t.metricsCSV.Interpolate()
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if err != nil {
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t.lg.Fatal("failed to inspect.CSV.Interpolate", zap.Error(err))
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}
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interpolated.FilePath = fs.systemMetricsCSVInterpolated
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if err := interpolated.Save(); err != nil {
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t.lg.Warn("failed to save CSV", zap.Error(err))
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} else {
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t.lg.Info("saved CSV", zap.String("path", interpolated.FilePath))
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}
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close(t.csvReady)
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return
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case sig := <-t.notifier:
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t.lg.Info("received a signal", zap.String("signal", sig.String()))
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return
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}
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}
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}()
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return nil
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}
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