forked from cloudflare/cloudflared
-
Notifications
You must be signed in to change notification settings - Fork 19
Expand file tree
/
Copy pathclient.go
More file actions
216 lines (169 loc) · 5.15 KB
/
Copy pathclient.go
File metadata and controls
216 lines (169 loc) · 5.15 KB
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
package diagnostic
import (
"context"
"encoding/json"
"fmt"
"io"
"net/http"
"net/url"
"strconv"
cfdflags "github.com/cloudflare/cloudflared/cmd/cloudflared/flags"
)
type httpClient struct {
http.Client
baseURL *url.URL
}
func NewHTTPClient() *httpClient {
httpTransport := http.Transport{
TLSHandshakeTimeout: defaultTimeout,
ResponseHeaderTimeout: defaultTimeout,
}
return &httpClient{
http.Client{
Transport: &httpTransport,
Timeout: defaultTimeout,
},
nil,
}
}
func (client *httpClient) SetBaseURL(baseURL *url.URL) {
client.baseURL = baseURL
}
func (client *httpClient) GET(ctx context.Context, endpoint string) (*http.Response, error) {
if client.baseURL == nil {
return nil, ErrNoBaseURL
}
url := client.baseURL.JoinPath(endpoint)
req, err := http.NewRequestWithContext(ctx, http.MethodGet, url.String(), nil)
if err != nil {
return nil, fmt.Errorf("error creating GET request: %w", err)
}
req.Header.Add("Accept", "application/json;version=1")
response, err := client.Do(req)
if err != nil {
return nil, fmt.Errorf("error GET request: %w", err)
}
return response, nil
}
type LogConfiguration struct {
logFile string
logDirectory string
uid int // the uid of the user that started cloudflared
}
func (client *httpClient) GetLogConfiguration(ctx context.Context) (*LogConfiguration, error) {
response, err := client.GET(ctx, cliConfigurationEndpoint)
if err != nil {
return nil, err
}
defer response.Body.Close()
var data map[string]string
if err := json.NewDecoder(response.Body).Decode(&data); err != nil {
return nil, fmt.Errorf("failed to decode body: %w", err)
}
uidStr, exists := data[configurationKeyUID]
if !exists {
return nil, ErrKeyNotFound
}
uid, err := strconv.Atoi(uidStr)
if err != nil {
return nil, fmt.Errorf("error convertin pid to int: %w", err)
}
logFile, exists := data[cfdflags.LogFile]
if exists {
return &LogConfiguration{logFile, "", uid}, nil
}
logDirectory, exists := data[cfdflags.LogDirectory]
if exists {
return &LogConfiguration{"", logDirectory, uid}, nil
}
// No log configured may happen when cloudflared is executed as a managed service or
// when containerized
return &LogConfiguration{"", "", uid}, nil
}
func (client *httpClient) GetMemoryDump(ctx context.Context, writer io.Writer) error {
response, err := client.GET(ctx, memoryDumpEndpoint)
if err != nil {
return err
}
return copyToWriter(response, writer)
}
func (client *httpClient) GetGoroutineDump(ctx context.Context, writer io.Writer) error {
response, err := client.GET(ctx, goroutineDumpEndpoint)
if err != nil {
return err
}
return copyToWriter(response, writer)
}
func (client *httpClient) GetTunnelState(ctx context.Context) (*TunnelState, error) {
response, err := client.GET(ctx, tunnelStateEndpoint)
if err != nil {
return nil, err
}
defer response.Body.Close()
var state TunnelState
if err := json.NewDecoder(response.Body).Decode(&state); err != nil {
return nil, fmt.Errorf("failed to decode body: %w", err)
}
return &state, nil
}
func (client *httpClient) GetSystemInformation(ctx context.Context, writer io.Writer) error {
response, err := client.GET(ctx, systemInformationEndpoint)
if err != nil {
return err
}
return copyJSONToWriter(response, writer)
}
func (client *httpClient) GetMetrics(ctx context.Context, writer io.Writer) error {
response, err := client.GET(ctx, metricsEndpoint)
if err != nil {
return err
}
return copyToWriter(response, writer)
}
func (client *httpClient) GetTunnelConfiguration(ctx context.Context, writer io.Writer) error {
response, err := client.GET(ctx, tunnelConfigurationEndpoint)
if err != nil {
return err
}
return copyJSONToWriter(response, writer)
}
func (client *httpClient) GetCliConfiguration(ctx context.Context, writer io.Writer) error {
response, err := client.GET(ctx, cliConfigurationEndpoint)
if err != nil {
return err
}
return copyJSONToWriter(response, writer)
}
func copyToWriter(response *http.Response, writer io.Writer) error {
defer response.Body.Close()
_, err := io.Copy(writer, response.Body)
if err != nil {
return fmt.Errorf("error writing response: %w", err)
}
return nil
}
func copyJSONToWriter(response *http.Response, writer io.Writer) error {
defer response.Body.Close()
var data interface{}
decoder := json.NewDecoder(response.Body)
err := decoder.Decode(&data)
if err != nil {
return fmt.Errorf("diagnostic client error whilst reading response: %w", err)
}
encoder := newFormattedEncoder(writer)
err = encoder.Encode(data)
if err != nil {
return fmt.Errorf("diagnostic client error whilst writing json: %w", err)
}
return nil
}
type HTTPClient interface {
GetLogConfiguration(ctx context.Context) (*LogConfiguration, error)
GetMemoryDump(ctx context.Context, writer io.Writer) error
GetGoroutineDump(ctx context.Context, writer io.Writer) error
GetTunnelState(ctx context.Context) (*TunnelState, error)
GetSystemInformation(ctx context.Context, writer io.Writer) error
GetMetrics(ctx context.Context, writer io.Writer) error
GetCliConfiguration(ctx context.Context, writer io.Writer) error
GetTunnelConfiguration(ctx context.Context, writer io.Writer) error
}