/
ComputeCredential.java
164 lines (145 loc) · 5.24 KB
/
ComputeCredential.java
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
/*
* Copyright 2013 Google Inc.
*
* 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 com.google.api.client.googleapis.compute;
import com.google.api.client.auth.oauth2.BearerToken;
import com.google.api.client.auth.oauth2.Credential;
import com.google.api.client.auth.oauth2.CredentialRefreshListener;
import com.google.api.client.auth.oauth2.TokenResponse;
import com.google.api.client.googleapis.auth.oauth2.OAuth2Utils;
import com.google.api.client.http.GenericUrl;
import com.google.api.client.http.HttpExecuteInterceptor;
import com.google.api.client.http.HttpRequest;
import com.google.api.client.http.HttpRequestInitializer;
import com.google.api.client.http.HttpTransport;
import com.google.api.client.json.JsonFactory;
import com.google.api.client.json.JsonObjectParser;
import com.google.api.client.util.Beta;
import com.google.api.client.util.Clock;
import com.google.api.client.util.Preconditions;
import java.io.IOException;
import java.util.Collection;
/**
* {@link Beta} <br/>
* Google Compute Engine service accounts OAuth 2.0 credential based on <a
* href="https://developers.google.com/compute/docs/authentication">Authenticating from Google
* Compute Engine</a>.
*
* <p>
* Sample usage:
* </p>
*
* <pre>
public static HttpRequestFactory createRequestFactory(
HttpTransport transport, JsonFactory jsonFactory) {
return transport.createRequestFactory(new GoogleComputeCredential(transport, jsonFactory));
}
* </pre>
*
* <p>
* Implementation is immutable and thread-safe.
* </p>
*
* @since 1.15
* @author Yaniv Inbar
*/
@Beta
public class ComputeCredential extends Credential {
/** Metadata Service Account token server encoded URL. */
public static final String TOKEN_SERVER_ENCODED_URL = OAuth2Utils.getMetadataServerUrl()
+ "/computeMetadata/v1/instance/service-accounts/default/token";
/**
* @param transport HTTP transport
* @param jsonFactory JSON factory
*/
public ComputeCredential(HttpTransport transport, JsonFactory jsonFactory) {
this(new Builder(transport, jsonFactory));
}
/**
* @param builder builder
*/
protected ComputeCredential(Builder builder) {
super(builder);
}
@Override
protected TokenResponse executeRefreshToken() throws IOException {
GenericUrl tokenUrl = new GenericUrl(getTokenServerEncodedUrl());
HttpRequest request = getTransport().createRequestFactory().buildGetRequest(tokenUrl);
request.setParser(new JsonObjectParser(getJsonFactory()));
request.getHeaders().set("Metadata-Flavor", "Google");
return request.execute().parseAs(TokenResponse.class);
}
/**
* {@link Beta} <br/>
* Google Compute Engine credential builder.
*
* <p>
* Implementation is not thread-safe.
* </p>
*/
@Beta
public static class Builder extends Credential.Builder {
/**
* @param transport HTTP transport
* @param jsonFactory JSON factory
*/
public Builder(HttpTransport transport, JsonFactory jsonFactory) {
super(BearerToken.authorizationHeaderAccessMethod());
setTransport(transport);
setJsonFactory(jsonFactory);
setTokenServerEncodedUrl(TOKEN_SERVER_ENCODED_URL);
}
@Override
public ComputeCredential build() {
return new ComputeCredential(this);
}
@Override
public Builder setTransport(HttpTransport transport) {
return (Builder) super.setTransport(Preconditions.checkNotNull(transport));
}
@Override
public Builder setClock(Clock clock) {
return (Builder) super.setClock(clock);
}
@Override
public Builder setJsonFactory(JsonFactory jsonFactory) {
return (Builder) super.setJsonFactory(Preconditions.checkNotNull(jsonFactory));
}
@Override
public Builder setTokenServerUrl(GenericUrl tokenServerUrl) {
return (Builder) super.setTokenServerUrl(Preconditions.checkNotNull(tokenServerUrl));
}
@Override
public Builder setTokenServerEncodedUrl(String tokenServerEncodedUrl) {
return (Builder) super.setTokenServerEncodedUrl(
Preconditions.checkNotNull(tokenServerEncodedUrl));
}
@Override
public Builder setClientAuthentication(HttpExecuteInterceptor clientAuthentication) {
Preconditions.checkArgument(clientAuthentication == null);
return this;
}
@Override
public Builder setRequestInitializer(HttpRequestInitializer requestInitializer) {
return (Builder) super.setRequestInitializer(requestInitializer);
}
@Override
public Builder addRefreshListener(CredentialRefreshListener refreshListener) {
return (Builder) super.addRefreshListener(refreshListener);
}
@Override
public Builder setRefreshListeners(Collection<CredentialRefreshListener> refreshListeners) {
return (Builder) super.setRefreshListeners(refreshListeners);
}
}
}