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server.go
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server.go
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/*
* Copyright 2023 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package web
import (
"context"
"net/http"
)
// A Server defines parameters for running an HTTP server.
type Server struct {
options Options
httpSvr *http.Server
Router
}
// NewServer returns a new server instance.
func NewServer(options Options) *Server {
var addr = options.Addr
if 0 == len(addr) {
addr = ":8080" // default port: 8080
}
var router = options.Router
if nil == router {
router = NewRouter()
}
svr := &Server{
options: options,
httpSvr: &http.Server{
Addr: addr,
Handler: router,
TLSConfig: options.TlsConfig(),
ReadTimeout: options.ReadTimeout,
ReadHeaderTimeout: options.ReadHeaderTimeout,
WriteTimeout: options.WriteTimeout,
IdleTimeout: options.IdleTimeout,
MaxHeaderBytes: options.MaxHeaderBytes,
},
Router: router,
}
return svr
}
// Addr returns the server listen address.
func (s *Server) Addr() string {
return s.httpSvr.Addr
}
// Run listens on the TCP network address Addr and then
// calls Serve to handle requests on incoming connections.
// Accepted connections are configured to enable TCP keep-alives.
func (s *Server) Run() error {
if nil != s.httpSvr.TLSConfig {
return s.httpSvr.ListenAndServeTLS(s.options.CertFile, s.options.KeyFile)
}
return s.httpSvr.ListenAndServe()
}
// Shutdown gracefully shuts down the server without interrupting any
// active connections. Shutdown works by first closing all open
// listeners, then closing all idle connections, and then waiting
// indefinitely for connections to return to idle and then shut down.
// If the provided context expires before the shutdown is complete,
// Shutdown returns the context's error, otherwise it returns any
// error returned from closing the Server's underlying Listener(s).
func (s *Server) Shutdown(ctx context.Context) error {
return s.httpSvr.Shutdown(ctx)
}