github.com/m3db/m3@v1.5.0/src/dbnode/network/server/tchannelthrift/cluster/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 cluster
    22  
    23  import (
    24  	"github.com/m3db/m3/src/dbnode/client"
    25  	"github.com/m3db/m3/src/dbnode/generated/thrift/rpc"
    26  	ns "github.com/m3db/m3/src/dbnode/network/server"
    27  	"github.com/m3db/m3/src/dbnode/network/server/tchannelthrift"
    28  	"github.com/m3db/m3/src/x/context"
    29  	xresource "github.com/m3db/m3/src/x/resource"
    30  
    31  	"github.com/uber/tchannel-go"
    32  )
    33  
    34  const (
    35  	// ChannelName is the TChannel channel name the cluster service is exposed on
    36  	ChannelName = "Cluster"
    37  )
    38  
    39  type server struct {
    40  	client      client.Client
    41  	address     string
    42  	contextPool context.Pool
    43  	opts        *tchannel.ChannelOptions
    44  }
    45  
    46  // NewServer creates a new cluster TChannel Thrift network service
    47  func NewServer(
    48  	client client.Client,
    49  	address string,
    50  	contextPool context.Pool,
    51  	opts *tchannel.ChannelOptions,
    52  ) ns.NetworkService {
    53  	return &server{
    54  		address:     address,
    55  		client:      client,
    56  		contextPool: contextPool,
    57  		opts:        opts,
    58  	}
    59  }
    60  
    61  func (s *server) ListenAndServe() (ns.Close, error) {
    62  	// NB(r): Keep ref to a local channel options since it's actually modified
    63  	// by TChannel itself to set defaults.
    64  	var opts *tchannel.ChannelOptions
    65  	if s.opts != nil {
    66  		immutableOpts := *s.opts
    67  		opts = &immutableOpts
    68  	}
    69  	channel, err := tchannel.NewChannel(ChannelName, opts)
    70  	if err != nil {
    71  		return nil, err
    72  	}
    73  
    74  	service := NewService(s.client)
    75  	tchannelthrift.RegisterServer(channel, rpc.NewTChanClusterServer(service), s.contextPool)
    76  
    77  	channel.ListenAndServe(s.address)
    78  
    79  	return func() {
    80  		channel.Close()
    81  		xresource.TryClose(service) // nolint: errcheck
    82  	}, nil
    83  }