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Restore Graceful Restarting & Socket Activation (#7274)

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* Prevent deadlock in indexer initialisation during graceful restart

* Move from gracehttp to our own service to add graceful ssh

* Add timeout for start of indexers and make hammer time configurable

* Fix issue with re-initialization in indexer during tests

* move the code to detect use of closed to graceful

* Handle logs gracefully - add a pid suffix just before restart

* Move to using a cond and a holder for indexers

* use time.Since

* Add some comments and attribution

* update modules.txt

* Use zero to disable timeout

* Move RestartProcess to its own file

* Add cleanup routine
This commit is contained in:
zeripath 2019-10-15 14:39:51 +01:00 • committed by GitHub
parent 4a290bd64c
commit 167e8f18da
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GPG key ID: 4AEE18F83AFDEB23
45 changed files with 1202 additions and 2009 deletions
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35
cmd/web.go
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@ -75,17 +75,13 @@ func runLetsEncrypt(listenAddr, domain, directory, email string, m http.Handler)
}
go func() {
log.Info("Running Let's Encrypt handler on %s", setting.HTTPAddr+":"+setting.PortToRedirect)
var err = http.ListenAndServe(setting.HTTPAddr+":"+setting.PortToRedirect, certManager.HTTPHandler(http.HandlerFunc(runLetsEncryptFallbackHandler))) // all traffic coming into HTTP will be redirect to HTTPS automatically (LE HTTP-01 validation happens here)
// all traffic coming into HTTP will be redirect to HTTPS automatically (LE HTTP-01 validation happens here)
var err = runHTTP(setting.HTTPAddr+":"+setting.PortToRedirect, certManager.HTTPHandler(http.HandlerFunc(runLetsEncryptFallbackHandler)))
if err != nil {
log.Fatal("Failed to start the Let's Encrypt handler on port %s: %v", setting.PortToRedirect, err)
}
}()
server := &http.Server{
Addr: listenAddr,
Handler: m,
TLSConfig: certManager.TLSConfig(),
}
return server.ListenAndServeTLS("", "")
return runHTTPSWithTLSConfig(listenAddr, certManager.TLSConfig(), context2.ClearHandler(m))
}
func runLetsEncryptFallbackHandler(w http.ResponseWriter, r *http.Request) {
@ -101,12 +97,21 @@ func runLetsEncryptFallbackHandler(w http.ResponseWriter, r *http.Request) {
}
func runWeb(ctx *cli.Context) error {
if os.Getppid() > 1 && len(os.Getenv("LISTEN_FDS")) > 0 {
log.Info("Restarting Gitea on PID: %d from parent PID: %d", os.Getpid(), os.Getppid())
} else {
log.Info("Starting Gitea on PID: %d", os.Getpid())
}
// Set pid file setting
if ctx.IsSet("pid") {
setting.CustomPID = ctx.String("pid")
}
// Perform global initialization
routers.GlobalInit()
// Set up Macaron
m := routes.NewMacaron()
routes.RegisterRoutes(m)
@ -164,6 +169,7 @@ func runWeb(ctx *cli.Context) error {
var err error
switch setting.Protocol {
case setting.HTTP:
NoHTTPRedirector()
err = runHTTP(listenAddr, context2.ClearHandler(m))
case setting.HTTPS:
if setting.EnableLetsEncrypt {
@ -172,9 +178,15 @@ func runWeb(ctx *cli.Context) error {
}
if setting.RedirectOtherPort {
go runHTTPRedirector()
} else {
NoHTTPRedirector()
}
err = runHTTPS(listenAddr, setting.CertFile, setting.KeyFile, context2.ClearHandler(m))
case setting.FCGI:
NoHTTPRedirector()
// FCGI listeners are provided as stdin - this is orthogonal to the LISTEN_FDS approach
// in graceful and systemD
NoMainListener()
var listener net.Listener
listener, err = net.Listen("tcp", listenAddr)
if err != nil {
@ -187,6 +199,10 @@ func runWeb(ctx *cli.Context) error {
}()
err = fcgi.Serve(listener, context2.ClearHandler(m))
case setting.UnixSocket:
// This could potentially be inherited using LISTEN_FDS but currently
// these cannot be inherited
NoHTTPRedirector()
NoMainListener()
if err := os.Remove(listenAddr); err != nil && !os.IsNotExist(err) {
log.Fatal("Failed to remove unix socket directory %s: %v", listenAddr, err)
}
@ -207,8 +223,9 @@ func runWeb(ctx *cli.Context) error {
}
if err != nil {
log.Fatal("Failed to start server: %v", err)
log.Critical("Failed to start server: %v", err)
}
log.Info("HTTP Listener: %s Closed", listenAddr)
log.Close()
return nil
}