-
Notifications
You must be signed in to change notification settings - Fork 1
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Merge pull request #85 from nabbar/issue_84
Issue 84: race detection on httpserver
- Loading branch information
Showing
5 changed files
with
502 additions
and
222 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,313 @@ | ||
| /*********************************************************************************************************************** | ||
| * | ||
| * MIT License | ||
| * | ||
| * Copyright (c) 2021 Nicolas JUHEL | ||
| * | ||
| * Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| * of this software and associated documentation files (the "Software"), to deal | ||
| * in the Software without restriction, including without limitation the rights | ||
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| * copies of the Software, and to permit persons to whom the Software is | ||
| * furnished to do so, subject to the following conditions: | ||
| * | ||
| * The above copyright notice and this permission notice shall be included in all | ||
| * copies or substantial portions of the Software. | ||
| * | ||
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | ||
| * SOFTWARE. | ||
| * | ||
| * | ||
| **********************************************************************************************************************/ | ||
|
|
||
| package httpserver | ||
|
|
||
| import ( | ||
| "context" | ||
| "errors" | ||
| "log" | ||
| "net" | ||
| "net/http" | ||
| "os" | ||
| "os/signal" | ||
| "sync/atomic" | ||
| "syscall" | ||
| "time" | ||
|
|
||
| liberr "github.com/nabbar/golib/errors" | ||
| liblog "github.com/nabbar/golib/logger" | ||
| "golang.org/x/net/http2" | ||
| ) | ||
|
|
||
| type srvRun struct { | ||
| run *atomic.Value | ||
| snm string | ||
| srv *http.Server | ||
| ctx context.Context | ||
| cnl context.CancelFunc | ||
| } | ||
|
|
||
| type run interface { | ||
| IsRunning() bool | ||
| WaitNotify() | ||
| Listen(cfg *ServerConfig, handler http.Handler) liberr.Error | ||
| Restart(cfg *ServerConfig) | ||
| Shutdown() | ||
| } | ||
|
|
||
| func newRun() run { | ||
| return &srvRun{ | ||
| run: new(atomic.Value), | ||
| srv: nil, | ||
| } | ||
| } | ||
|
|
||
| func (s *srvRun) getRunning() bool { | ||
| if s.run == nil { | ||
| return false | ||
| } else if i := s.run.Load(); i == nil { | ||
| return false | ||
| } else if b, ok := i.(bool); !ok { | ||
| return false | ||
| } else { | ||
| return b | ||
| } | ||
| } | ||
|
|
||
| func (s *srvRun) setRunning(state bool) { | ||
| s.run.Store(state) | ||
| } | ||
|
|
||
| func (s *srvRun) IsRunning() bool { | ||
| return s.getRunning() | ||
| } | ||
|
|
||
| func (s *srvRun) WaitNotify() { | ||
| // Wait for interrupt signal to gracefully shutdown the server with | ||
| // a timeout of 5 seconds. | ||
| quit := make(chan os.Signal, 1) | ||
| signal.Notify(quit, syscall.SIGINT) | ||
| signal.Notify(quit, syscall.SIGTERM) | ||
| signal.Notify(quit, syscall.SIGQUIT) | ||
|
|
||
| select { | ||
| case <-quit: | ||
| s.Shutdown() | ||
| case <-s.ctx.Done(): | ||
| s.Shutdown() | ||
| } | ||
| } | ||
|
|
||
| func (s *srvRun) Merge(srv Server) bool { | ||
| panic("implement me") | ||
| } | ||
|
|
||
| func (s *srvRun) Listen(cfg *ServerConfig, handler http.Handler) liberr.Error { | ||
| ssl, err := cfg.GetTLS() | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| bind := cfg.GetListen().Host | ||
| name := cfg.Name | ||
| if name == "" { | ||
| name = bind | ||
| } | ||
|
|
||
| srv := &http.Server{ | ||
| Addr: cfg.GetListen().Host, | ||
| ErrorLog: liblog.GetLogger(liblog.ErrorLevel, log.LstdFlags|log.Lmicroseconds, "[http/http2 server '%s']", name), | ||
| } | ||
|
|
||
| if cfg.ReadTimeout > 0 { | ||
| srv.ReadTimeout = cfg.ReadTimeout | ||
| } | ||
|
|
||
| if cfg.ReadHeaderTimeout > 0 { | ||
| srv.ReadHeaderTimeout = cfg.ReadHeaderTimeout | ||
| } | ||
|
|
||
| if cfg.WriteTimeout > 0 { | ||
| srv.WriteTimeout = cfg.WriteTimeout | ||
| } | ||
|
|
||
| if cfg.MaxHeaderBytes > 0 { | ||
| srv.MaxHeaderBytes = cfg.MaxHeaderBytes | ||
| } | ||
|
|
||
| if cfg.IdleTimeout > 0 { | ||
| srv.IdleTimeout = cfg.IdleTimeout | ||
| } | ||
|
|
||
| if ssl.LenCertificatePair() > 0 { | ||
| srv.TLSConfig = ssl.TlsConfig("") | ||
| } | ||
|
|
||
| if handler != nil { | ||
| srv.Handler = handler | ||
| } else if s.srv != nil { | ||
| srv.Handler = s.srv.Handler | ||
| } | ||
|
|
||
| s2 := &http2.Server{} | ||
|
|
||
| if cfg.MaxHandlers > 0 { | ||
| s2.MaxHandlers = cfg.MaxHandlers | ||
| } | ||
|
|
||
| if cfg.MaxConcurrentStreams > 0 { | ||
| s2.MaxConcurrentStreams = cfg.MaxConcurrentStreams | ||
| } | ||
|
|
||
| if cfg.PermitProhibitedCipherSuites { | ||
| s2.PermitProhibitedCipherSuites = true | ||
| } | ||
|
|
||
| if cfg.IdleTimeout > 0 { | ||
| s2.IdleTimeout = cfg.IdleTimeout | ||
| } | ||
|
|
||
| if cfg.MaxUploadBufferPerConnection > 0 { | ||
| s2.MaxUploadBufferPerConnection = cfg.MaxUploadBufferPerConnection | ||
| } | ||
|
|
||
| if cfg.MaxUploadBufferPerStream > 0 { | ||
| s2.MaxUploadBufferPerStream = cfg.MaxUploadBufferPerStream | ||
| } | ||
|
|
||
| if e := http2.ConfigureServer(srv, s2); e != nil { | ||
| return ErrorHTTP2Configure.ErrorParent(e) | ||
| } | ||
|
|
||
| if s.IsRunning() { | ||
| s.Shutdown() | ||
| } | ||
|
|
||
| for i := 0; i < 5; i++ { | ||
| if e := s.PortInUse(cfg.Listen); e != nil { | ||
| s.Shutdown() | ||
| } else { | ||
| break | ||
| } | ||
| } | ||
|
|
||
| if s.ctx != nil && s.ctx.Err() == nil && s.cnl != nil { | ||
| s.cnl() | ||
| s.ctx = nil | ||
| s.cnl = nil | ||
| } | ||
|
|
||
| s.ctx, s.cnl = context.WithCancel(cfg.getContext()) | ||
| s.snm = name | ||
| s.srv = srv | ||
|
|
||
| go func(name, host string) { | ||
|
|
||
| defer func() { | ||
| if s.ctx != nil && s.cnl != nil && s.ctx.Err() == nil { | ||
| s.cnl() | ||
| } | ||
| s.setRunning(false) | ||
| }() | ||
|
|
||
| s.srv.BaseContext = func(listener net.Listener) context.Context { | ||
| return s.ctx | ||
| } | ||
|
|
||
| var err error | ||
|
|
||
| if ssl.LenCertificatePair() > 0 { | ||
| liblog.InfoLevel.Logf("TLS Server '%s' is starting with bindable: %s", name, host) | ||
|
|
||
| s.setRunning(true) | ||
| err = s.srv.ListenAndServeTLS("", "") | ||
| } else { | ||
| liblog.InfoLevel.Logf("Server '%s' is starting with bindable: %s", name, host) | ||
|
|
||
| s.setRunning(true) | ||
| err = s.srv.ListenAndServe() | ||
| } | ||
|
|
||
| if err != nil && s.ctx.Err() != nil && s.ctx.Err().Error() == err.Error() { | ||
| return | ||
| } else if err != nil && errors.Is(err, http.ErrServerClosed) { | ||
| return | ||
| } else if err != nil { | ||
| liblog.ErrorLevel.LogErrorCtxf(liblog.NilLevel, "Listen Server '%s'", err, name) | ||
| } | ||
| }(name, bind) | ||
|
|
||
| return nil | ||
| } | ||
|
|
||
| func (s *srvRun) Restart(cfg *ServerConfig) { | ||
| _ = s.Listen(cfg, nil) | ||
| } | ||
|
|
||
| func (s *srvRun) Shutdown() { | ||
| ctx, cancel := context.WithTimeout(context.Background(), timeoutShutdown) | ||
|
|
||
| defer func() { | ||
| cancel() | ||
|
|
||
| if s.srv != nil { | ||
| _ = s.srv.Close() | ||
| } | ||
|
|
||
| s.setRunning(false) | ||
| }() | ||
|
|
||
| liblog.InfoLevel.Logf("Shutdown Server '%s'...", s.snm) | ||
|
|
||
| if s.cnl != nil && s.ctx != nil && s.ctx.Err() == nil { | ||
| s.cnl() | ||
| } | ||
|
|
||
| if s.srv != nil { | ||
| err := s.srv.Shutdown(ctx) | ||
| if err != nil && !errors.Is(err, http.ErrServerClosed) { | ||
| liblog.ErrorLevel.Logf("Shutdown Server '%s' Error: %v", s.snm, err) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| func (s *srvRun) PortInUse(listen string) liberr.Error { | ||
| var ( | ||
| dia = net.Dialer{} | ||
| con net.Conn | ||
| err error | ||
| ctx context.Context | ||
| cnl context.CancelFunc | ||
| ) | ||
|
|
||
| defer func() { | ||
| if cnl != nil { | ||
| cnl() | ||
| } | ||
| if con != nil { | ||
| _ = con.Close() | ||
| } | ||
| }() | ||
|
|
||
| ctx, cnl = context.WithTimeout(context.TODO(), 2*time.Second) | ||
| con, err = dia.DialContext(ctx, "tcp", listen) | ||
|
|
||
| if con != nil { | ||
| _ = con.Close() | ||
| con = nil | ||
| } | ||
|
|
||
| cnl() | ||
| cnl = nil | ||
|
|
||
| if err != nil { | ||
| return nil | ||
| } | ||
|
|
||
| return ErrorPortUse.Error(nil) | ||
| } |
Oops, something went wrong.