-
Notifications
You must be signed in to change notification settings - Fork 0
/
cloud_controller_connection.go
154 lines (131 loc) · 3.95 KB
/
cloud_controller_connection.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
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
package cloudcontroller
import (
"crypto/tls"
"crypto/x509"
"io/ioutil"
"net"
"net/http"
"net/url"
"strings"
"time"
"code.cloudfoundry.org/cli/api/cloudcontroller/ccerror"
)
// Config is for configuring a CloudControllerConnection.
type Config struct {
DialTimeout time.Duration
SkipSSLValidation bool
}
// CloudControllerConnection represents a connection to the Cloud Controller
// server.
type CloudControllerConnection struct {
HTTPClient *http.Client
UserAgent string
}
// NewConnection returns a new CloudControllerConnection with provided
// configuration.
func NewConnection(config Config) *CloudControllerConnection {
tr := &http.Transport{
TLSClientConfig: &tls.Config{
InsecureSkipVerify: config.SkipSSLValidation,
},
Proxy: http.ProxyFromEnvironment,
DialContext: (&net.Dialer{
KeepAlive: 30 * time.Second,
Timeout: config.DialTimeout,
}).DialContext,
}
return &CloudControllerConnection{
HTTPClient: &http.Client{Transport: tr},
}
}
// Make performs the request and parses the response.
func (connection *CloudControllerConnection) Make(request *Request, passedResponse *Response) error {
// In case this function is called from a retry, passedResponse may already
// be populated with a previous response. We reset in case there's an HTTP
// error and we don't repopulate it in populateResponse.
passedResponse.reset()
response, err := connection.HTTPClient.Do(request.Request)
if err != nil {
return connection.processRequestErrors(request.Request, err)
}
return connection.populateResponse(response, passedResponse)
}
func (*CloudControllerConnection) handleStatusCodes(response *http.Response, passedResponse *Response) error {
if response.StatusCode == http.StatusNoContent {
passedResponse.RawResponse = []byte("{}")
} else {
rawBytes, err := ioutil.ReadAll(response.Body)
defer response.Body.Close()
if err != nil {
return err
}
passedResponse.RawResponse = rawBytes
}
if response.StatusCode >= 400 {
return ccerror.RawHTTPStatusError{
StatusCode: response.StatusCode,
RawResponse: passedResponse.RawResponse,
RequestIDs: response.Header["X-Vcap-Request-Id"],
}
}
return nil
}
// handleWarnings looks for the "X-Cf-Warnings" header in the cloud controller
// response and URI decodes them. The value can contain multiple warnings that
// are comma separated.
func (*CloudControllerConnection) handleWarnings(response *http.Response) ([]string, error) {
rawWarnings := response.Header.Get("X-Cf-Warnings")
if len(rawWarnings) == 0 {
return nil, nil
}
var warnings []string
for _, rawWarning := range strings.Split(rawWarnings, ",") {
warning, err := url.QueryUnescape(rawWarning)
if err != nil {
return nil, err
}
warnings = append(warnings, strings.Trim(warning, " "))
}
return warnings, nil
}
func (connection *CloudControllerConnection) populateResponse(response *http.Response, passedResponse *Response) error {
passedResponse.HTTPResponse = response
warnings, err := connection.handleWarnings(response)
if err != nil {
return err
}
passedResponse.Warnings = warnings
if resourceLocationURL := response.Header.Get("Location"); resourceLocationURL != "" {
passedResponse.ResourceLocationURL = resourceLocationURL
}
err = connection.handleStatusCodes(response, passedResponse)
if err != nil {
return err
}
if passedResponse.DecodeJSONResponseInto != nil {
err = DecodeJSON(passedResponse.RawResponse, passedResponse.DecodeJSONResponseInto)
if err != nil {
return err
}
}
return nil
}
func (*CloudControllerConnection) processRequestErrors(request *http.Request, err error) error {
switch e := err.(type) {
case *url.Error:
switch urlErr := e.Err.(type) {
case x509.UnknownAuthorityError:
return ccerror.UnverifiedServerError{
URL: request.URL.String(),
}
case x509.HostnameError:
return ccerror.SSLValidationHostnameError{
Message: urlErr.Error(),
}
default:
return ccerror.RequestError{Err: e}
}
default:
return err
}
}