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An OkHttp backed HttpStack for Volley
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/** | |
* The MIT License (MIT) | |
* | |
* Copyright (c) 2015 Circle Internet Financial | |
* | |
* Permission is hereby granted, free of charge, to any person obtaining a copy | |
* of this software and associated documentation files (the "Software"), to deal | |
* in the Software without restriction, including without limitation the rights | |
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
* copies of the Software, and to permit persons to whom the Software is | |
* furnished to do so, subject to the following conditions: | |
* | |
* The above copyright notice and this permission notice shall be included in | |
* all copies or substantial portions of the Software. | |
* | |
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
* THE SOFTWARE. | |
*/ | |
package com.circle.android.api; | |
import com.android.volley.AuthFailureError; | |
import com.android.volley.Request; | |
import com.android.volley.toolbox.HttpStack; | |
import com.squareup.okhttp.Call; | |
import com.squareup.okhttp.Headers; | |
import com.squareup.okhttp.MediaType; | |
import com.squareup.okhttp.OkHttpClient; | |
import com.squareup.okhttp.Protocol; | |
import com.squareup.okhttp.RequestBody; | |
import com.squareup.okhttp.Response; | |
import com.squareup.okhttp.ResponseBody; | |
import org.apache.http.HttpEntity; | |
import org.apache.http.HttpResponse; | |
import org.apache.http.ProtocolVersion; | |
import org.apache.http.StatusLine; | |
import org.apache.http.entity.BasicHttpEntity; | |
import org.apache.http.message.BasicHeader; | |
import org.apache.http.message.BasicHttpResponse; | |
import org.apache.http.message.BasicStatusLine; | |
import java.io.IOException; | |
import java.util.Map; | |
import java.util.concurrent.TimeUnit; | |
/** | |
* OkHttp backed {@link com.android.volley.toolbox.HttpStack HttpStack} that does not | |
* use okhttp-urlconnection | |
*/ | |
public class OkHttpStack implements HttpStack { | |
private final OkHttpClient mClient; | |
public OkHttpStack(OkHttpClient client) { | |
this.mClient = client; | |
} | |
@Override | |
public HttpResponse performRequest(Request<?> request, Map<String, String> additionalHeaders) | |
throws IOException, AuthFailureError { | |
OkHttpClient client = mClient.clone(); | |
int timeoutMs = request.getTimeoutMs(); | |
client.setConnectTimeout(timeoutMs, TimeUnit.MILLISECONDS); | |
client.setReadTimeout(timeoutMs, TimeUnit.MILLISECONDS); | |
client.setWriteTimeout(timeoutMs, TimeUnit.MILLISECONDS); | |
com.squareup.okhttp.Request.Builder okHttpRequestBuilder = new com.squareup.okhttp.Request.Builder(); | |
okHttpRequestBuilder.url(request.getUrl()); | |
Map<String, String> headers = request.getHeaders(); | |
for (final String name : headers.keySet()) { | |
okHttpRequestBuilder.addHeader(name, headers.get(name)); | |
} | |
for (final String name : additionalHeaders.keySet()) { | |
okHttpRequestBuilder.addHeader(name, additionalHeaders.get(name)); | |
} | |
setConnectionParametersForRequest(okHttpRequestBuilder, request); | |
com.squareup.okhttp.Request okHttpRequest = okHttpRequestBuilder.build(); | |
Call okHttpCall = client.newCall(okHttpRequest); | |
Response okHttpResponse = okHttpCall.execute(); | |
StatusLine responseStatus = new BasicStatusLine(parseProtocol(okHttpResponse.protocol()), okHttpResponse.code(), okHttpResponse.message()); | |
BasicHttpResponse response = new BasicHttpResponse(responseStatus); | |
response.setEntity(entityFromOkHttpResponse(okHttpResponse)); | |
Headers responseHeaders = okHttpResponse.headers(); | |
for (int i = 0, len = responseHeaders.size(); i < len; i++) { | |
final String name = responseHeaders.name(i), value = responseHeaders.value(i); | |
if (name != null) { | |
response.addHeader(new BasicHeader(name, value)); | |
} | |
} | |
return response; | |
} | |
private static HttpEntity entityFromOkHttpResponse(Response r) throws IOException { | |
BasicHttpEntity entity = new BasicHttpEntity(); | |
ResponseBody body = r.body(); | |
entity.setContent(body.byteStream()); | |
entity.setContentLength(body.contentLength()); | |
entity.setContentEncoding(r.header("Content-Encoding")); | |
if (body.contentType() != null) { | |
entity.setContentType(body.contentType().type()); | |
} | |
return entity; | |
} | |
@SuppressWarnings("deprecation") | |
private static void setConnectionParametersForRequest(com.squareup.okhttp.Request.Builder builder, Request<?> request) | |
throws IOException, AuthFailureError { | |
switch (request.getMethod()) { | |
case Request.Method.DEPRECATED_GET_OR_POST: | |
// Ensure backwards compatibility. Volley assumes a request with a null body is a GET. | |
byte[] postBody = request.getPostBody(); | |
if (postBody != null) { | |
builder.post(RequestBody.create(MediaType.parse(request.getPostBodyContentType()), postBody)); | |
} | |
break; | |
case Request.Method.GET: | |
builder.get(); | |
break; | |
case Request.Method.DELETE: | |
builder.delete(); | |
break; | |
case Request.Method.POST: | |
builder.post(createRequestBody(request)); | |
break; | |
case Request.Method.PUT: | |
builder.put(createRequestBody(request)); | |
break; | |
case Request.Method.HEAD: | |
builder.head(); | |
break; | |
case Request.Method.OPTIONS: | |
builder.method("OPTIONS", null); | |
break; | |
case Request.Method.TRACE: | |
builder.method("TRACE", null); | |
break; | |
case Request.Method.PATCH: | |
builder.patch(createRequestBody(request)); | |
break; | |
default: | |
throw new IllegalStateException("Unknown method type."); | |
} | |
} | |
private static ProtocolVersion parseProtocol(final Protocol p) { | |
switch (p) { | |
case HTTP_1_0: | |
return new ProtocolVersion("HTTP", 1, 0); | |
case HTTP_1_1: | |
return new ProtocolVersion("HTTP", 1, 1); | |
case SPDY_3: | |
return new ProtocolVersion("SPDY", 3, 1); | |
case HTTP_2: | |
return new ProtocolVersion("HTTP", 2, 0); | |
} | |
throw new IllegalAccessError("Unkwown protocol"); | |
} | |
private static RequestBody createRequestBody(Request r) throws AuthFailureError { | |
final byte[] body = r.getBody(); | |
if (body == null) return null; | |
return RequestBody.create(MediaType.parse(r.getBodyContentType()), body); | |
} | |
} |
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