forked from OpenFeign/feign
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathOkHttpClient.java
More file actions
172 lines (151 loc) · 5.34 KB
/
OkHttpClient.java
File metadata and controls
172 lines (151 loc) · 5.34 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
/**
* Copyright 2012-2020 The Feign Authors
*
* 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 feign.okhttp;
import java.io.IOException;
import java.io.InputStream;
import java.io.Reader;
import java.nio.charset.Charset;
import java.util.Collection;
import java.util.Map;
import java.util.concurrent.TimeUnit;
import feign.Client;
import feign.Request.HttpMethod;
import okhttp3.*;
/**
* This module directs Feign's http requests to
* <a href="http://square.github.io/okhttp/">OkHttp</a>, which enables SPDY and better network
* control. Ex.
*
* <pre>
* GitHub github = Feign.builder().client(new OkHttpClient()).target(GitHub.class,
* "https://api.github.com");
*/
public final class OkHttpClient implements Client {
private final okhttp3.OkHttpClient delegate;
public OkHttpClient() {
this(new okhttp3.OkHttpClient());
}
public OkHttpClient(okhttp3.OkHttpClient delegate) {
this.delegate = delegate;
}
static Request toOkHttpRequest(feign.Request input) {
Request.Builder requestBuilder = new Request.Builder();
requestBuilder.url(input.url());
MediaType mediaType = null;
boolean hasAcceptHeader = false;
for (String field : input.headers().keySet()) {
if (field.equalsIgnoreCase("Accept")) {
hasAcceptHeader = true;
}
for (String value : input.headers().get(field)) {
requestBuilder.addHeader(field, value);
if (field.equalsIgnoreCase("Content-Type")) {
mediaType = MediaType.parse(value);
if (input.charset() != null) {
mediaType.charset(input.charset());
}
}
}
}
// Some servers choke on the default accept string.
if (!hasAcceptHeader) {
requestBuilder.addHeader("Accept", "*/*");
}
byte[] inputBody = input.body();
boolean isMethodWithBody =
HttpMethod.POST == input.httpMethod() || HttpMethod.PUT == input.httpMethod()
|| HttpMethod.PATCH == input.httpMethod();
if (isMethodWithBody) {
requestBuilder.removeHeader("Content-Type");
if (inputBody == null) {
// write an empty BODY to conform with okhttp 2.4.0+
// http://johnfeng.github.io/blog/2015/06/30/okhttp-updates-post-wouldnt-be-allowed-to-have-null-body/
inputBody = new byte[0];
}
}
RequestBody body = inputBody != null ? RequestBody.create(mediaType, inputBody) : null;
requestBuilder.method(input.httpMethod().name(), body);
return requestBuilder.build();
}
private static feign.Response toFeignResponse(Response response, feign.Request request)
throws IOException {
return feign.Response.builder()
.status(response.code())
.reason(response.message())
.request(request)
.headers(toMap(response.headers()))
.body(toBody(response.body()))
.build();
}
private static Map<String, Collection<String>> toMap(Headers headers) {
return (Map) headers.toMultimap();
}
private static feign.Response.Body toBody(final ResponseBody input) throws IOException {
if (input == null || input.contentLength() == 0) {
if (input != null) {
input.close();
}
return null;
}
final Integer length = input.contentLength() >= 0 && input.contentLength() <= Integer.MAX_VALUE
? (int) input.contentLength()
: null;
return new feign.Response.Body() {
@Override
public void close() throws IOException {
input.close();
}
@Override
public Integer length() {
return length;
}
@Override
public boolean isRepeatable() {
return false;
}
@Override
public InputStream asInputStream() throws IOException {
return input.byteStream();
}
@SuppressWarnings("deprecation")
@Override
public Reader asReader() throws IOException {
return input.charStream();
}
@Override
public Reader asReader(Charset charset) throws IOException {
return asReader();
}
};
}
@Override
public feign.Response execute(feign.Request input, feign.Request.Options options)
throws IOException {
okhttp3.OkHttpClient requestScoped;
if (delegate.connectTimeoutMillis() != options.connectTimeoutMillis()
|| delegate.readTimeoutMillis() != options.readTimeoutMillis()
|| delegate.followRedirects() != options.isFollowRedirects()) {
requestScoped = delegate.newBuilder()
.connectTimeout(options.connectTimeoutMillis(), TimeUnit.MILLISECONDS)
.readTimeout(options.readTimeoutMillis(), TimeUnit.MILLISECONDS)
.followRedirects(options.isFollowRedirects())
.build();
} else {
requestScoped = delegate;
}
Request request = toOkHttpRequest(input);
Response response = requestScoped.newCall(request).execute();
return toFeignResponse(response, input).toBuilder().request(input).build();
}
}