-
Notifications
You must be signed in to change notification settings - Fork 66
/
test_tchannel_backend.go
119 lines (98 loc) · 3.46 KB
/
test_tchannel_backend.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
// Copyright (c) 2017 Uber Technologies, Inc.
//
// 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 testBackend
import (
"net"
"strconv"
"github.com/uber-go/zap"
"github.com/uber/tchannel-go"
zt "github.com/uber/zanzibar/runtime/tchannel"
)
// TestTChannelBackend will pretend to be a http backend
type TestTChannelBackend struct {
Channel *tchannel.Channel
Server *zt.Server
IP string
Port int32
RealPort int32
RealAddr string
}
// BuildTChannelBackends returns a map of TChannel backends based on config
func BuildTChannelBackends(
cfg map[string]interface{}, knownTChannelBackends []string,
) (map[string]*TestTChannelBackend, error) {
n := len(knownTChannelBackends)
result := make(map[string]*TestTChannelBackend, n)
for i := 0; i < n; i++ {
serviceName := knownTChannelBackends[i]
backend, err := CreateTChannelBackend(0, serviceName)
if err != nil {
return nil, err
}
err = backend.Bootstrap()
if err != nil {
return nil, err
}
result[serviceName] = backend
cfg["clients."+serviceName+".ip"] = "127.0.0.1"
cfg["clients."+serviceName+".port"] = int64(backend.RealPort)
}
return result, nil
}
// Bootstrap creates a backend for testing
func (backend *TestTChannelBackend) Bootstrap() error {
addr := backend.IP + ":" + strconv.Itoa(int(backend.Port))
ln, err := net.Listen("tcp", addr)
if err != nil {
return err
}
realAddr := ln.Addr().(*net.TCPAddr)
backend.RealPort = int32(realAddr.Port)
backend.RealAddr = realAddr.IP.String() + ":" + strconv.Itoa(int(backend.RealPort))
// tchannel serve does not block, connection handling is done in different goroutine
err = backend.Channel.Serve(ln)
return err
}
// Register registers tchannel server handler
func (backend *TestTChannelBackend) Register(server zt.TChanServer) {
backend.Server.Register(server)
}
// Close closes the underlying channel
func (backend *TestTChannelBackend) Close() {
backend.Channel.Close()
}
// CreateTChannelBackend creates a TChannel backend for testing
func CreateTChannelBackend(port int32, serviceName string) (*TestTChannelBackend, error) {
backend := &TestTChannelBackend{
IP: "127.0.0.1",
Port: port,
}
testLogger := zap.New(zap.NewJSONEncoder())
tchannelOpts := &tchannel.ChannelOptions{
Logger: tchannel.NullLogger,
}
channel, err := tchannel.NewChannel(serviceName, tchannelOpts)
if err != nil {
return nil, err
}
backend.Channel = channel
backend.Server = zt.NewServer(channel, testLogger)
return backend, nil
}