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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
105 lines
3.4 KiB
Go
105 lines
3.4 KiB
Go
package main
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import (
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"flag"
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"fmt"
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"net/http"
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"os"
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"time"
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"github.com/VictoriaMetrics/VictoriaMetrics/app/vlinsert"
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"github.com/VictoriaMetrics/VictoriaMetrics/app/vlselect"
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"github.com/VictoriaMetrics/VictoriaMetrics/app/vlstorage"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/buildinfo"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/cgroup"
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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/fs"
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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/procutil"
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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", ":9428", "TCP address to listen for http connections. See also -httpListenAddr.useProxyProtocol")
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useProxyProtocol = flag.Bool("httpListenAddr.useProxyProtocol", false, "Whether to use proxy protocol for connections accepted at -httpListenAddr . "+
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"See https://www.haproxy.org/download/1.8/doc/proxy-protocol.txt . "+
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"With enabled proxy protocol http server cannot serve regular /metrics endpoint. Use -pushmetrics.url for metrics pushing")
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gogc = flag.Int("gogc", 100, "GOGC to use. See https://tip.golang.org/doc/gc-guide")
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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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cgroup.SetGOGC(*gogc)
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buildinfo.Init()
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logger.Init()
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logger.Infof("starting VictoriaLogs at %q...", *httpListenAddr)
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startTime := time.Now()
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vlstorage.Init()
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vlselect.Init()
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vlinsert.Init()
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go httpserver.Serve(*httpListenAddr, *useProxyProtocol, requestHandler)
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logger.Infof("started VictoriaLogs in %.3f seconds; see https://docs.victoriametrics.com/VictoriaLogs/", time.Since(startTime).Seconds())
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pushmetrics.Init()
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sig := procutil.WaitForSigterm()
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logger.Infof("received signal %s", sig)
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pushmetrics.Stop()
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logger.Infof("gracefully shutting down webservice at %q", *httpListenAddr)
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startTime = time.Now()
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if err := httpserver.Stop(*httpListenAddr); err != nil {
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logger.Fatalf("cannot stop the webservice: %s", err)
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}
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logger.Infof("successfully shut down the webservice in %.3f seconds", time.Since(startTime).Seconds())
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vlinsert.Stop()
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vlselect.Stop()
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vlstorage.Stop()
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fs.MustStopDirRemover()
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logger.Infof("the VictoriaLogs has been stopped in %.3f seconds", time.Since(startTime).Seconds())
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}
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func requestHandler(w http.ResponseWriter, r *http.Request) bool {
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if r.URL.Path == "/" {
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if r.Method != http.MethodGet {
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return false
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}
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w.Header().Add("Content-Type", "text/html; charset=utf-8")
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fmt.Fprintf(w, "<h2>Single-node VictoriaLogs</h2></br>")
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fmt.Fprintf(w, "See docs at <a href='https://docs.victoriametrics.com/VictoriaLogs/'>https://docs.victoriametrics.com/VictoriaLogs/</a></br>")
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fmt.Fprintf(w, "Useful endpoints:</br>")
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httpserver.WriteAPIHelp(w, [][2]string{
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{"select/vmui", "Web UI for VictoriaLogs"},
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{"metrics", "available service metrics"},
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{"flags", "command-line flags"},
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})
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return true
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}
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if vlinsert.RequestHandler(w, r) {
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return true
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}
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if vlselect.RequestHandler(w, r) {
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return true
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}
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return false
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}
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func usage() {
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const s = `
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victoria-logs is a log management and analytics service.
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See the docs at https://docs.victoriametrics.com/VictoriaLogs/
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`
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flagutil.Usage(s)
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}
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