github.com/m3db/m3@v1.5.0/src/aggregator/server/http/server.go (about)

     1  // Copyright (c) 2016 Uber Technologies, Inc.
     2  //
     3  // Permission is hereby granted, free of charge, to any person obtaining a copy
     4  // of this software and associated documentation files (the "Software"), to deal
     5  // in the Software without restriction, including without limitation the rights
     6  // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
     7  // copies of the Software, and to permit persons to whom the Software is
     8  // furnished to do so, subject to the following conditions:
     9  //
    10  // The above copyright notice and this permission notice shall be included in
    11  // all copies or substantial portions of the Software.
    12  //
    13  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    14  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    15  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    16  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    17  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    18  // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
    19  // THE SOFTWARE.
    20  
    21  package http
    22  
    23  import (
    24  	"fmt"
    25  	"net"
    26  	"net/http"
    27  	"time"
    28  
    29  	"github.com/m3db/m3/src/aggregator/aggregator"
    30  	xdebug "github.com/m3db/m3/src/x/debug"
    31  	"github.com/m3db/m3/src/x/instrument"
    32  	xserver "github.com/m3db/m3/src/x/server"
    33  )
    34  
    35  const (
    36  	defaultCPUProfileDuration = 5 * time.Second
    37  )
    38  
    39  // server is an http server.
    40  type server struct {
    41  	opts       Options
    42  	address    string
    43  	listener   net.Listener
    44  	aggregator aggregator.Aggregator
    45  	iOpts      instrument.Options
    46  }
    47  
    48  // NewServer creates a new http server.
    49  func NewServer(
    50  	address string,
    51  	aggregator aggregator.Aggregator,
    52  	opts Options,
    53  	iOpts instrument.Options,
    54  ) xserver.Server {
    55  	return &server{
    56  		opts:       opts,
    57  		address:    address,
    58  		aggregator: aggregator,
    59  		iOpts:      iOpts,
    60  	}
    61  }
    62  
    63  func (s *server) ListenAndServe() error {
    64  	listener, err := net.Listen("tcp", s.address)
    65  	if err != nil {
    66  		return err
    67  	}
    68  
    69  	return s.Serve(listener)
    70  }
    71  
    72  func (s *server) Serve(l net.Listener) error {
    73  	registerHandlers(s.opts.Mux(), s.aggregator)
    74  
    75  	// create and register debug handler
    76  	debugWriter, err := xdebug.NewZipWriterWithDefaultSources(
    77  		defaultCPUProfileDuration,
    78  		s.iOpts,
    79  	)
    80  	if err != nil {
    81  		return fmt.Errorf("unable to create debug writer: %v", err)
    82  	}
    83  
    84  	if err := debugWriter.RegisterHandler(xdebug.DebugURL, s.opts.Mux()); err != nil {
    85  		return fmt.Errorf("unable to register debug writer endpoint: %v", err)
    86  	}
    87  
    88  	server := http.Server{
    89  		Handler:      s.opts.Mux(),
    90  		ReadTimeout:  s.opts.ReadTimeout(),
    91  		WriteTimeout: s.opts.WriteTimeout(),
    92  	}
    93  
    94  	s.listener = l
    95  	s.address = l.Addr().String()
    96  
    97  	go func() {
    98  		server.Serve(l)
    99  	}()
   100  
   101  	return nil
   102  }
   103  
   104  func (s *server) Close() {
   105  	if s.listener != nil {
   106  		s.listener.Close()
   107  	}
   108  	s.listener = nil
   109  }