mirror of https://github.com/etcd-io/dbtester.git
98 lines
2.6 KiB
Go
98 lines
2.6 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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)
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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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plog.Infof("starting collecting metrics [database %q | PID: %d | disk device: %q | network interface: %q]",
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t.req.DatabaseID, t.pid, fs.diskDevice, fs.networkInterface)
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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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plog.Errorf("inspect.CSV.Add error (%v)", err)
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continue
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}
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case <-t.uploadSig:
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plog.Infof("upload signal received; saving CSV at %q", t.metricsCSV.FilePath)
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if err := t.metricsCSV.Save(); err != nil {
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plog.Errorf("inspect.CSV.Save(%q) error %v", t.metricsCSV.FilePath, err)
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} else {
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plog.Infof("CSV saved at %q", 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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plog.Fatalf("inspect.CSV.Interpolate(%q) failed with %v", t.metricsCSV.FilePath, 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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plog.Errorf("inspect.CSV.Save(%q) error %v", interpolated.FilePath, err)
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} else {
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plog.Infof("CSV saved at %q", 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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plog.Infof("signal received %q", 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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