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package server |
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import ( |
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"context" |
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"errors" |
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"fmt" |
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"log" |
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"net/http" |
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"os" |
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"os/signal" |
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"syscall" |
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"time" |
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) |
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type httpServer struct { |
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server *http.Server |
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} |
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func New(port uint16, handler http.Handler, logger *log.Logger) Server { |
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return &httpServer{ |
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server: &http.Server{ |
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Addr: fmt.Sprintf(":%d", port), |
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Handler: handler, |
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ErrorLog: logger, |
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ReadTimeout: 5 * time.Second, |
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WriteTimeout: 10 * time.Second, |
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IdleTimeout: 30 * time.Second, |
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MaxHeaderBytes: 1 << 20, |
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}, |
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} |
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} |
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func (httpServer *httpServer) Run() error { |
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hostname, err := os.Hostname() |
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if err != nil { |
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return err |
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} |
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done := make(chan bool) |
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quit := make(chan os.Signal, 1) |
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signal.Notify(quit, syscall.SIGINT, syscall.SIGTERM) |
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go func() { |
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<-quit |
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httpServer.server.ErrorLog.Printf("%s - Shutdown signal received...\n", hostname) |
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ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second) |
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defer cancel() |
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httpServer.server.SetKeepAlivesEnabled(false) |
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if err := httpServer.server.Shutdown(ctx); err != nil { |
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httpServer.server.ErrorLog.Fatalf("Could not gracefully shutdown the server: %v\n", err) |
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} |
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close(done) |
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}() |
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httpServer.server.ErrorLog.Printf("%s - Starting server on port %v", hostname, httpServer.server.Addr) |
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if err := httpServer.server.ListenAndServe(); errors.Is(err, http.ErrServerClosed) { |
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httpServer.server.ErrorLog.Fatalf("Could not listen on %s: %v\n", httpServer.server.Addr, err) |
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} |
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<-done |
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httpServer.server.ErrorLog.Printf("%s - Server has been gracefully stopped.\n", hostname) |
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return nil |
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} |
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