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https://github.com/VictoriaMetrics/VictoriaMetrics.git
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9e5e514faf
Previously the was a race condition when the background goroutine still could try collecting metrics
from already stopped resources after returning from pushmetrics.Stop().
Now the pushmetrics.Stop() waits until the background goroutine is stopped before returning.
This is a follow-up for https://github.com/VictoriaMetrics/VictoriaMetrics/pull/5549
and the commit fe2d9f6646 .
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/5548
102 lines
3.6 KiB
Go
102 lines
3.6 KiB
Go
package main
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import (
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"flag"
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"fmt"
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"os"
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"time"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/backup/actions"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/backup/common"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/backup/fslocal"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/buildinfo"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/envflag"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/flagutil"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/httpserver"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/logger"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/pushmetrics"
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)
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var (
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httpListenAddr = flag.String("httpListenAddr", ":8421", "TCP address for exporting metrics at /metrics page")
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src = flag.String("src", "", "Source path with backup on the remote storage. "+
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"Example: gs://bucket/path/to/backup, s3://bucket/path/to/backup, azblob://container/path/to/backup or fs:///path/to/local/backup")
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storageDataPath = flag.String("storageDataPath", "victoria-metrics-data", "Destination path where backup must be restored. "+
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"VictoriaMetrics must be stopped when restoring from backup. -storageDataPath dir can be non-empty. In this case the contents of -storageDataPath dir "+
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"is synchronized with -src contents, i.e. it works like 'rsync --delete'")
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concurrency = flag.Int("concurrency", 10, "The number of concurrent workers. Higher concurrency may reduce restore duration")
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maxBytesPerSecond = flagutil.NewBytes("maxBytesPerSecond", 0, "The maximum download speed. There is no limit if it is set to 0")
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skipBackupCompleteCheck = flag.Bool("skipBackupCompleteCheck", false, "Whether to skip checking for 'backup complete' file in -src. This may be useful for restoring from old backups, which were created without 'backup complete' file")
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)
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func main() {
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// Write flags and help message to stdout, since it is easier to grep or pipe.
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flag.CommandLine.SetOutput(os.Stdout)
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flag.Usage = usage
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envflag.Parse()
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buildinfo.Init()
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logger.Init()
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go httpserver.Serve(*httpListenAddr, false, nil)
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srcFS, err := newSrcFS()
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if err != nil {
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logger.Fatalf("%s", err)
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}
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dstFS, err := newDstFS()
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if err != nil {
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logger.Fatalf("%s", err)
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}
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a := &actions.Restore{
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Concurrency: *concurrency,
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Src: srcFS,
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Dst: dstFS,
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SkipBackupCompleteCheck: *skipBackupCompleteCheck,
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}
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pushmetrics.Init()
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if err := a.Run(); err != nil {
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logger.Fatalf("cannot restore from backup: %s", err)
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}
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pushmetrics.Stop()
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srcFS.MustStop()
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dstFS.MustStop()
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startTime := time.Now()
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logger.Infof("gracefully shutting down http server for metrics at %q", *httpListenAddr)
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if err := httpserver.Stop(*httpListenAddr); err != nil {
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logger.Fatalf("cannot stop http server for metrics: %s", err)
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}
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logger.Infof("successfully shut down http server for metrics in %.3f seconds", time.Since(startTime).Seconds())
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}
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func usage() {
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const s = `
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vmrestore restores VictoriaMetrics data from backups made by vmbackup.
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See the docs at https://docs.victoriametrics.com/vmrestore.html .
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`
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flagutil.Usage(s)
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}
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func newDstFS() (*fslocal.FS, error) {
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if len(*storageDataPath) == 0 {
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return nil, fmt.Errorf("`-storageDataPath` cannot be empty")
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}
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fs := &fslocal.FS{
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Dir: *storageDataPath,
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MaxBytesPerSecond: maxBytesPerSecond.IntN(),
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}
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if err := fs.Init(); err != nil {
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return nil, fmt.Errorf("cannot initialize local fs: %w", err)
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}
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return fs, nil
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}
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func newSrcFS() (common.RemoteFS, error) {
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fs, err := actions.NewRemoteFS(*src)
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if err != nil {
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return nil, fmt.Errorf("cannot parse `-src`=%q: %w", *src, err)
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}
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return fs, nil
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}
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