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Changes related Sync Engine library that communicates to cloud server

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This change updates some of the code that the library uses
to communicate with the cloud server
Specifically :
- Update BlockingHttpClient to use template ResponseProcessor
- Update HttpUrlConnectionBuilder to setAuthToken for HttpUrlConnection

Bug: 17464069
Bug: 17464805

Change-Id: I7d7b58dff594b920162f799d102e8582ff9fe6a4
This commit is contained in:
Jatin Matani 2014-09-29 17:16:30 -07:00
parent 847735fdfa
commit db1b736446
6 changed files with 170 additions and 66 deletions
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35
java/src/com/android/inputmethod/latin/network/AuthException.java Normal file
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@ -0,0 +1,35 @@
/*
* Copyright (C) 2014 The Android Open Source Project
*
* 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.android.inputmethod.latin.network;
/**
* Authentication exception. When this exception is thrown, the client may
* try to refresh the authentication token and try again.
*/
public class AuthException extends Exception {
public AuthException() {
super();
}
public AuthException(Throwable throwable) {
super(throwable);
}
public AuthException(String detailMessage) {
super(detailMessage);
}
}

34
java/src/com/android/inputmethod/latin/network/BlockingHttpClient.java
View File

@ -16,6 +16,8 @@
package com.android.inputmethod.latin.network;
import android.util.Log;
import com.android.inputmethod.annotations.UsedForTesting;
import java.io.BufferedOutputStream;
@ -35,20 +37,15 @@ import javax.annotation.Nullable;
*/
@UsedForTesting
public class BlockingHttpClient {
private static final boolean DEBUG = false;
private static final String TAG = BlockingHttpClient.class.getSimpleName();
private final HttpURLConnection mConnection;
/**
* Interface that handles processing the response for a request.
*/
public interface ResponseProcessor {
/**
* Called when the HTTP request fails with an error.
*
* @param httpStatusCode The status code of the HTTP response.
* @param message The HTTP response message, if any, or null.
*/
void onError(int httpStatusCode, @Nullable String message);
public interface ResponseProcessor<T> {
/**
* Called when the HTTP request finishes successfully.
* The {@link InputStream} is closed by the client after the method finishes,
@ -56,7 +53,7 @@ public class BlockingHttpClient {
*
* @param response An input stream that can be used to read the HTTP response.
*/
void onSuccess(InputStream response);
T onSuccess(InputStream response) throws IOException;
}
/**
@ -73,11 +70,11 @@ public class BlockingHttpClient {
* TODO: Remove @UsedForTesting after this is actually used.
*
* @param request The request payload, if any, or null.
* @param responeProcessor A processor for the HTTP response.
* @param responseProcessor A processor for the HTTP response.
*/
@UsedForTesting
public void execute(@Nullable byte[] request, @Nonnull ResponseProcessor responseProcessor)
throws IOException {
public <T> T execute(@Nullable byte[] request, @Nonnull ResponseProcessor<T> responseProcessor)
throws IOException, AuthException, HttpException {
try {
if (request != null) {
OutputStream out = new BufferedOutputStream(mConnection.getOutputStream());
@ -88,9 +85,16 @@ public class BlockingHttpClient {
final int responseCode = mConnection.getResponseCode();
if (responseCode != HttpURLConnection.HTTP_OK) {
responseProcessor.onError(responseCode, mConnection.getResponseMessage());
if (DEBUG) {
Log.d(TAG, "Response error: " + responseCode + ", Message: "
+ mConnection.getResponseMessage());
}
if (responseCode == HttpURLConnection.HTTP_UNAUTHORIZED) {
throw new AuthException(mConnection.getResponseMessage());
}
throw new HttpException(responseCode);
} else {
responseProcessor.onSuccess(mConnection.getInputStream());
return responseProcessor.onSuccess(mConnection.getInputStream());
}
} finally {
mConnection.disconnect();

46
java/src/com/android/inputmethod/latin/network/HttpException.java Normal file
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@ -0,0 +1,46 @@
/*
* Copyright (C) 2014 The Android Open Source Project
*
* 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.android.inputmethod.latin.network;
import com.android.inputmethod.annotations.UsedForTesting;
/**
* The HttpException exception represents a XML/HTTP fault with a HTTP status code.
*/
public class HttpException extends Exception {
/**
* The HTTP status code.
*/
private final int mStatusCode;
/**
* @param statusCode int HTTP status code.
*/
public HttpException(int statusCode) {
super("Response Code: " + statusCode);
mStatusCode = statusCode;
}
/**
* @return the HTTP status code related to this exception.
*/
@UsedForTesting
public int getHttpStatusCode() {
return mStatusCode;
}
}

34
java/src/com/android/inputmethod/latin/network/HttpUrlConnectionBuilder.java
View File

@ -36,6 +36,11 @@ import java.util.Map.Entry;
public class HttpUrlConnectionBuilder {
private static final int DEFAULT_TIMEOUT_MILLIS = 5 * 1000;
/**
* Request header key for authentication.
*/
public static final String HTTP_HEADER_AUTHORIZATION = "Authorization";
/**
* Request header key for cache control.
*/
@ -78,7 +83,7 @@ public class HttpUrlConnectionBuilder {
* Sets the URL that'll be used for the request.
* This *must* be set before calling {@link #build()}
*
* TODO: Remove @UsedForTesting after this is actually used.
* TODO: Remove @UsedForTesting after this method is actually used.
*/
@UsedForTesting
public HttpUrlConnectionBuilder setUrl(String url) throws MalformedURLException {
@ -92,7 +97,7 @@ public class HttpUrlConnectionBuilder {
/**
* Sets the connect timeout. Defaults to {@value #DEFAULT_TIMEOUT} milliseconds.
*
* TODO: Remove @UsedForTesting after this is actually used.
* TODO: Remove @UsedForTesting after this method is actually used.
*/
@UsedForTesting
public HttpUrlConnectionBuilder setConnectTimeout(int timeoutMillis) {
@ -107,7 +112,7 @@ public class HttpUrlConnectionBuilder {
/**
* Sets the read timeout. Defaults to {@value #DEFAULT_TIMEOUT} milliseconds.
*
* TODO: Remove @UsedForTesting after this is actually used.
* TODO: Remove @UsedForTesting after this method is actually used.
*/
@UsedForTesting
public HttpUrlConnectionBuilder setReadTimeout(int timeoutMillis) {
@ -122,7 +127,7 @@ public class HttpUrlConnectionBuilder {
/**
* Adds an entry to the request header.
*
* TODO: Remove @UsedForTesting after this is actually used.
* TODO: Remove @UsedForTesting after this method is actually used.
*/
@UsedForTesting
public HttpUrlConnectionBuilder addHeader(String key, String value) {
@ -130,11 +135,22 @@ public class HttpUrlConnectionBuilder {
return this;
}
/**
* Sets an authentication token.
*
* TODO: Remove @UsedForTesting after this method is actually used.
*/
@UsedForTesting
public HttpUrlConnectionBuilder setAuthToken(String value) {
mHeaderMap.put(HTTP_HEADER_AUTHORIZATION, value);
return this;
}
/**
* Sets the request to be executed such that the input is not buffered.
* This may be set when the request size is known beforehand.
*
* TODO: Remove @UsedForTesting after this is actually used.
* TODO: Remove @UsedForTesting after this method is actually used.
*/
@UsedForTesting
public HttpUrlConnectionBuilder setFixedLengthForStreaming(int length) {
@ -145,7 +161,7 @@ public class HttpUrlConnectionBuilder {
/**
* Indicates if the request can use cached responses or not.
*
* TODO: Remove @UsedForTesting after this is actually used.
* TODO: Remove @UsedForTesting after this method is actually used.
*/
@UsedForTesting
public HttpUrlConnectionBuilder setUseCache(boolean useCache) {
@ -161,7 +177,7 @@ public class HttpUrlConnectionBuilder {
* @see #MODE_DOWNLOAD_ONLY
* @see #MODE_BI_DIRECTIONAL
*
* TODO: Remove @UsedForTesting after this is actually used.
* TODO: Remove @UsedForTesting after this method is actually used
*/
@UsedForTesting
public HttpUrlConnectionBuilder setMode(int mode) {
@ -177,7 +193,7 @@ public class HttpUrlConnectionBuilder {
/**
* Builds the {@link HttpURLConnection} instance that can be used to execute the request.
*
* TODO: Remove @UsedForTesting after this is actually used.
* TODO: Remove @UsedForTesting after this method is actually used.
*/
@UsedForTesting
public HttpURLConnection build() throws IOException {
@ -210,4 +226,4 @@ public class HttpUrlConnectionBuilder {
}
return connection;
}
}
}

78
tests/src/com/android/inputmethod/latin/network/BlockingHttpClientTests.java
View File

@ -16,8 +16,8 @@
package com.android.inputmethod.latin.network;
import static org.mockito.Mockito.any;
import static org.mockito.Mockito.eq;
import static org.mockito.Matchers.any;
import static org.mockito.Matchers.eq;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;
@ -53,41 +53,52 @@ public class BlockingHttpClientTests extends AndroidTestCase {
MockitoAnnotations.initMocks(this);
}
public void testError_badGateway() throws IOException {
public void testError_badGateway() throws IOException, AuthException {
when(mMockHttpConnection.getResponseCode()).thenReturn(HttpURLConnection.HTTP_BAD_GATEWAY);
final BlockingHttpClient client = new BlockingHttpClient(mMockHttpConnection);
final FakeErrorResponseProcessor processor =
new FakeErrorResponseProcessor(HttpURLConnection.HTTP_BAD_GATEWAY);
final FakeErrorResponseProcessor processor = new FakeErrorResponseProcessor();
client.execute(null /* empty request */, processor);
assertTrue("ResponseProcessor was not invoked", processor.mInvoked);
try {
client.execute(null /* empty request */, processor);
fail("Expecting an HttpException");
} catch (HttpException e) {
// expected HttpException
assertEquals(HttpURLConnection.HTTP_BAD_GATEWAY, e.getHttpStatusCode());
}
}
public void testError_clientTimeout() throws IOException {
public void testError_clientTimeout() throws Exception {
when(mMockHttpConnection.getResponseCode()).thenReturn(
HttpURLConnection.HTTP_CLIENT_TIMEOUT);
final BlockingHttpClient client = new BlockingHttpClient(mMockHttpConnection);
final FakeErrorResponseProcessor processor =
new FakeErrorResponseProcessor(HttpURLConnection.HTTP_CLIENT_TIMEOUT);
final FakeErrorResponseProcessor processor = new FakeErrorResponseProcessor();
client.execute(null /* empty request */, processor);
assertTrue("ResponseProcessor was not invoked", processor.mInvoked);
try {
client.execute(null /* empty request */, processor);
fail("Expecting an HttpException");
} catch (HttpException e) {
// expected HttpException
assertEquals(HttpURLConnection.HTTP_CLIENT_TIMEOUT, e.getHttpStatusCode());
}
}
public void testError_forbiddenWithRequest() throws IOException {
public void testError_forbiddenWithRequest() throws Exception {
final OutputStream mockOutputStream = Mockito.mock(OutputStream.class);
when(mMockHttpConnection.getResponseCode()).thenReturn(HttpURLConnection.HTTP_FORBIDDEN);
when(mMockHttpConnection.getOutputStream()).thenReturn(mockOutputStream);
final BlockingHttpClient client = new BlockingHttpClient(mMockHttpConnection);
final FakeErrorResponseProcessor processor =
new FakeErrorResponseProcessor(HttpURLConnection.HTTP_FORBIDDEN);
final FakeErrorResponseProcessor processor = new FakeErrorResponseProcessor();
client.execute(new byte[100], processor);
try {
client.execute(new byte[100], processor);
fail("Expecting an HttpException");
} catch (HttpException e) {
assertEquals(HttpURLConnection.HTTP_FORBIDDEN, e.getHttpStatusCode());
}
verify(mockOutputStream).write(any(byte[].class), eq(0), eq(100));
assertTrue("ResponseProcessor was not invoked", processor.mInvoked);
}
public void testSuccess_emptyRequest() throws IOException {
public void testSuccess_emptyRequest() throws Exception {
final Random rand = new Random();
byte[] response = new byte[100];
rand.nextBytes(response);
@ -101,7 +112,7 @@ public class BlockingHttpClientTests extends AndroidTestCase {
assertTrue("ResponseProcessor was not invoked", processor.mInvoked);
}
public void testSuccess() throws IOException {
public void testSuccess() throws Exception {
final OutputStream mockOutputStream = Mockito.mock(OutputStream.class);
final Random rand = new Random();
byte[] response = new byte[100];
@ -117,28 +128,15 @@ public class BlockingHttpClientTests extends AndroidTestCase {
assertTrue("ResponseProcessor was not invoked", processor.mInvoked);
}
private static class FakeErrorResponseProcessor implements ResponseProcessor {
private final int mExpectedStatusCode;
boolean mInvoked;
FakeErrorResponseProcessor(int expectedStatusCode) {
mExpectedStatusCode = expectedStatusCode;
}
private static class FakeErrorResponseProcessor implements ResponseProcessor<Void> {
@Override
public void onError(int httpStatusCode, String message) {
mInvoked = true;
assertEquals("onError:", mExpectedStatusCode, httpStatusCode);
}
@Override
public void onSuccess(InputStream response) {
public Void onSuccess(InputStream response) {
fail("Expected an error but received success");
return null;
}
}
private static class FakeSuccessResponseProcessor implements ResponseProcessor {
private static class FakeSuccessResponseProcessor implements ResponseProcessor<Void> {
private final byte[] mExpectedResponse;
boolean mInvoked;
@ -148,12 +146,7 @@ public class BlockingHttpClientTests extends AndroidTestCase {
}
@Override
public void onError(int httpStatusCode, String message) {
fail("Expected a response but received an error");
}
@Override
public void onSuccess(InputStream response) {
public Void onSuccess(InputStream response) {
try {
mInvoked = true;
BufferedInputStream in = new BufferedInputStream(response);
@ -169,6 +162,7 @@ public class BlockingHttpClientTests extends AndroidTestCase {
} catch (IOException ex) {
fail("IOException in onSuccess");
}
return null;
}
}
}

9
tests/src/com/android/inputmethod/latin/network/HttpUrlConnectionBuilderTests.java
View File

@ -142,4 +142,13 @@ public class HttpUrlConnectionBuilderTests extends AndroidTestCase {
assertTrue(connection.getDoInput());
assertTrue(connection.getDoOutput());
}
public void testSetAuthToken() throws IOException {
HttpUrlConnectionBuilder builder = new HttpUrlConnectionBuilder();
builder.setUrl("https://www.example.com");
builder.setAuthToken("some-random-auth-token");
HttpURLConnection connection = builder.build();
assertEquals("some-random-auth-token",
connection.getRequestProperty(HttpUrlConnectionBuilder.HTTP_HEADER_AUTHORIZATION));
}
}