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
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
|
/*
* Copyright (C) 2017-2019 "IoT.bzh"
* Author Sebastien Douheret <sebastien@iot.bzh>
*
* 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
*
* http://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 agent
import (
"fmt"
"io"
"strings"
"time"
common "gerrit.automotivelinux.org/gerrit/src/xds/xds-common.git"
uuid "github.com/satori/go.uuid"
)
// XdsMonitoring .
type XdsMonitoring struct {
*Context
ID string
BaseURL string
ConnRetry int
Connected bool
Disabled bool
// Private fields
client *common.HTTPClient
logOut io.Writer
cbOnConnect OnConnectedXdsSupervCB
}
// XdsSuperVTraceConfig
type XdsSuperVTraceConfig struct {
Pid int `json:"pid"`
Pids []int `json:"pids"`
WsName string `json:"ws"`
}
// OnConnectedXdsSupervCB connect callback
type OnConnectedXdsSupervCB func(svr *XdsMonitoring) error
// NewXdsMonitoring creates an instance of XdsMonitoring
func NewXdsMonitoring(ctx *Context) *XdsMonitoring {
return &XdsMonitoring{
Context: ctx,
ID: "XdsMonitoring-" + uuid.NewV1().String(),
BaseURL: ctx.Config.FileConf.ProfileConf.XDSMonitoring.URL,
ConnRetry: ctx.Config.FileConf.ProfileConf.XDSMonitoring.ConnRetry,
Connected: false,
Disabled: false,
logOut: ctx.Log.Out,
}
}
// Connect Establish HTTP connection with XDS Monitoring Dameon
func (xs *XdsMonitoring) Connect() error {
var err error
var retry int
xs.Disabled = false
xs.Connected = false
err = nil
for retry = xs.ConnRetry; retry > 0; retry-- {
if err = xs._CreateConnectHTTP(); err == nil {
break
}
if retry == xs.ConnRetry {
// Notify only on the first conn error
// doing that avoid 2 notifs (conn false; conn true) on startup
xs._NotifyState()
}
xs.Log.Infof("Establishing connection to XDS Monitoring daemon (retry %d/%d)", retry, xs.ConnRetry)
time.Sleep(time.Second)
}
if retry == 0 {
// FIXME: re-use _Reconnect to wait longer in background
return fmt.Errorf("Connection to XDS Monitoring daemon failure")
}
if err != nil {
return err
}
// Check HTTP connection and establish WS connection
err = xs._Connect(false)
return err
}
// ConnectOn Register a callback on events reception
func (xs *XdsMonitoring) ConnectOn(f OnConnectedXdsSupervCB) error {
xs.cbOnConnect = f
return nil
}
// GetVersion Send Get request to retrieve XDS Monitoring version
func (xs *XdsMonitoring) GetVersion(res interface{}) error {
// FIXME add suffix URLSuffix in common HTTP client lib instead of _BuildURL
return xs.client.Get(xs._BuildURL("/version"), &res)
}
// GetTopo Send Get request to retrieve Services/Daemons topology
func (xs *XdsMonitoring) GetTopo(res interface{}) error {
return xs.client.Get(xs._BuildURL("/list"), &res)
}
// StartTrace Send Monitoring config and start tracing
func (xs *XdsMonitoring) StartTrace(cfg XdsSuperVTraceConfig, res interface{}) error {
return xs.client.Post(xs._BuildURL("/trace/start"), cfg, &res)
}
// StopTrace Send Monitoring stop tracing
func (xs *XdsMonitoring) StopTrace(res interface{}) error {
var cfg interface{}
return xs.client.Post(xs._BuildURL("/trace/stop"), cfg, res)
}
/***
** Private functions
***/
// _BuildURL .
func (xs *XdsMonitoring) _BuildURL(url string) string {
return url + "?token=HELLO&uuid=magic"
}
// Create HTTP client
func (xs *XdsMonitoring) _CreateConnectHTTP() error {
var err error
// FIXME SEB - Client key not in header but in cookie
// temporary workaround: used _BuildURL to append uuid=magic in URL
// map[Set-Cookie:[x-afb-uuid-5678=2b185cc3-276b-4097-91fa-d607eaf937e6; Path=/api; Max-Age=32000000; ...
//port := strings.Split(xs.BaseURL, ":")[2]
//"x-afb-uuid-" + port
xs.client, err = common.HTTPNewClient(xs.BaseURL,
common.HTTPClientConfig{
//HeaderClientKeyName: "Xds-Sid",
HeaderAPIKeyName: "token",
Apikey: "HELLO",
URLPrefix: "/api/xds",
CsrfDisable: true,
LogOut: xs.logOut,
LogPrefix: "XDSSUPERV: ",
LogLevel: common.HTTPLogLevelWarning,
})
xs.client.SetLogLevel(xs.Log.Level.String())
if err != nil {
msg := ": " + err.Error()
if strings.Contains(err.Error(), "connection refused") {
msg = fmt.Sprintf("(url: %s)", xs.BaseURL)
}
return fmt.Errorf("ERROR: cannot connect to XDS Monitoring %s", msg)
}
if xs.client == nil {
return fmt.Errorf("ERROR: cannot connect to XDS Monitoring (null client)")
}
return nil
}
// _Connect Established HTTP and WS connection
func (xs *XdsMonitoring) _Connect(reConn bool) error {
var res interface{}
if err := xs.client.Get(xs._BuildURL("/ping"), &res); err != nil {
xs.Connected = false
if !reConn {
xs._NotifyState()
}
return err
}
xs.Connected = true
// Call OnConnect callback
if xs.cbOnConnect != nil {
xs.cbOnConnect(xs)
}
xs._NotifyState()
return nil
}
// _NotifyState Send event to notify changes
func (xs *XdsMonitoring) _NotifyState() {
/* TODO
evSts := xaapiv1.ServerCfg{
ID: xs.ID,
URL: xs.BaseURL,
APIURL: xs.APIURL,
PartialURL: xs.PartialURL,
ConnRetry: xs.ConnRetry,
Connected: xs.Connected,
}
if err := xs.events.Emit(xaapiv1.EVTServerConfig, evSts, ""); err != nil {
xs.Log.Warningf("Cannot notify XdsServer state change: %v", err)
}
*/
}
|
