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Fixed the issue in AWS CRT HTTP clients where the connection is shut down unnecessarily #4825
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85 changes: 85 additions & 0 deletions
85
...rc/main/java/software/amazon/awssdk/http/crt/internal/response/ResponseHandlerHelper.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,85 @@ | ||
| /* | ||
| * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved. | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"). | ||
| * You may not use this file except in compliance with the License. | ||
| * A copy of the License is located at | ||
| * | ||
| * http://aws.amazon.com/apache2.0 | ||
| * | ||
| * or in the "license" file accompanying this file. This file 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 software.amazon.awssdk.http.crt.internal.response; | ||
|
|
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| import java.util.concurrent.atomic.AtomicBoolean; | ||
| import software.amazon.awssdk.annotations.SdkInternalApi; | ||
| import software.amazon.awssdk.crt.http.HttpClientConnection; | ||
| import software.amazon.awssdk.crt.http.HttpHeader; | ||
| import software.amazon.awssdk.crt.http.HttpHeaderBlock; | ||
| import software.amazon.awssdk.crt.http.HttpStream; | ||
| import software.amazon.awssdk.http.HttpStatusFamily; | ||
| import software.amazon.awssdk.http.SdkHttpResponse; | ||
|
|
||
| /** | ||
| * This is the helper class that contains common logic shared between {@link CrtResponseAdapter} and | ||
| * {@link InputStreamAdaptingHttpStreamResponseHandler}. | ||
| * | ||
| * CRT connection will only be closed, i.e., not reused, in one of the following conditions: | ||
| * 1. 5xx server error OR | ||
| * 2. It fails to read the response. | ||
| */ | ||
| @SdkInternalApi | ||
| public class ResponseHandlerHelper { | ||
|
|
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| private final SdkHttpResponse.Builder responseBuilder; | ||
| private final HttpClientConnection connection; | ||
| private AtomicBoolean connectionClosed = new AtomicBoolean(false); | ||
|
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| public ResponseHandlerHelper(SdkHttpResponse.Builder responseBuilder, HttpClientConnection connection) { | ||
| this.responseBuilder = responseBuilder; | ||
| this.connection = connection; | ||
| } | ||
|
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| public void onResponseHeaders(HttpStream stream, int responseStatusCode, int headerType, HttpHeader[] nextHeaders) { | ||
| if (headerType == HttpHeaderBlock.MAIN.getValue()) { | ||
| for (HttpHeader h : nextHeaders) { | ||
| responseBuilder.appendHeader(h.getName(), h.getValue()); | ||
| } | ||
| responseBuilder.statusCode(responseStatusCode); | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * Release the connection back to the pool so that it can be reused. | ||
| */ | ||
| public void releaseConnection(HttpStream stream) { | ||
| if (connectionClosed.compareAndSet(false, true)) { | ||
| connection.close(); | ||
| stream.close(); | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * Close the connection completely | ||
| */ | ||
| public void closeConnection(HttpStream stream) { | ||
| if (connectionClosed.compareAndSet(false, true)) { | ||
| connection.shutdown(); | ||
| connection.close(); | ||
| stream.close(); | ||
| } | ||
| } | ||
|
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| public void cleanUpConnectionBasedOnStatusCode(HttpStream stream) { | ||
| // always close the connection on a 5XX response code. | ||
| if (HttpStatusFamily.of(responseBuilder.statusCode()) == HttpStatusFamily.SERVER_ERROR) { | ||
| closeConnection(stream); | ||
| } else { | ||
| releaseConnection(stream); | ||
| } | ||
| } | ||
| } |
103 changes: 103 additions & 0 deletions
103
...test/java/software/amazon/awssdk/http/crt/internal/BaseHttpStreamResponseHandlerTest.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,103 @@ | ||
| /* | ||
| * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved. | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"). | ||
| * You may not use this file except in compliance with the License. | ||
| * A copy of the License is located at | ||
| * | ||
| * http://aws.amazon.com/apache2.0 | ||
| * | ||
| * or in the "license" file accompanying this file. This file 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 software.amazon.awssdk.http.crt.internal; | ||
|
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| import static org.assertj.core.api.Assertions.assertThatThrownBy; | ||
| import static org.mockito.Mockito.never; | ||
| import static org.mockito.Mockito.verify; | ||
|
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| import java.util.concurrent.CompletableFuture; | ||
| import org.junit.jupiter.api.BeforeEach; | ||
| import org.junit.jupiter.api.Test; | ||
| import org.junit.jupiter.api.extension.ExtendWith; | ||
| import org.junit.jupiter.params.ParameterizedTest; | ||
| import org.junit.jupiter.params.provider.ValueSource; | ||
| import org.mockito.Mock; | ||
| import org.mockito.junit.jupiter.MockitoExtension; | ||
| import software.amazon.awssdk.crt.http.HttpClientConnection; | ||
| import software.amazon.awssdk.crt.http.HttpException; | ||
| import software.amazon.awssdk.crt.http.HttpHeader; | ||
| import software.amazon.awssdk.crt.http.HttpHeaderBlock; | ||
| import software.amazon.awssdk.crt.http.HttpStream; | ||
| import software.amazon.awssdk.crt.http.HttpStreamResponseHandler; | ||
|
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| @ExtendWith(MockitoExtension.class) | ||
| public abstract class BaseHttpStreamResponseHandlerTest { | ||
| @Mock HttpClientConnection crtConn; | ||
| CompletableFuture requestFuture; | ||
|
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| @Mock | ||
| private HttpStream httpStream; | ||
|
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| private HttpStreamResponseHandler responseHandler; | ||
|
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| abstract HttpStreamResponseHandler responseHandler(); | ||
|
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| @BeforeEach | ||
| public void setUp() { | ||
| requestFuture = new CompletableFuture<>(); | ||
| responseHandler = responseHandler(); | ||
| } | ||
|
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| @Test | ||
| void serverError_shouldShutdownConnection() { | ||
| HttpHeader[] httpHeaders = getHttpHeaders(); | ||
| responseHandler.onResponseHeaders(httpStream, 500, HttpHeaderBlock.MAIN.getValue(), | ||
| httpHeaders); | ||
|
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| responseHandler.onResponseHeadersDone(httpStream, 0); | ||
| responseHandler.onResponseComplete(httpStream, 0); | ||
| requestFuture.join(); | ||
| verify(crtConn).shutdown(); | ||
| verify(crtConn).close(); | ||
| verify(httpStream).close(); | ||
| } | ||
|
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| @ParameterizedTest | ||
| @ValueSource(ints = { 200, 400, 202, 403 }) | ||
| void nonServerError_shouldNotShutdownConnection(int statusCode) { | ||
| HttpHeader[] httpHeaders = getHttpHeaders(); | ||
| responseHandler.onResponseHeaders(httpStream, statusCode, HttpHeaderBlock.MAIN.getValue(), | ||
| httpHeaders); | ||
|
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| responseHandler.onResponseHeadersDone(httpStream, 0); | ||
| responseHandler.onResponseComplete(httpStream, 0); | ||
|
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| requestFuture.join(); | ||
| verify(crtConn, never()).shutdown(); | ||
| verify(crtConn).close(); | ||
| verify(httpStream).close(); | ||
| } | ||
|
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| @Test | ||
| void failedToGetResponse_shouldShutdownConnection() { | ||
| HttpHeader[] httpHeaders = getHttpHeaders(); | ||
| responseHandler.onResponseHeaders(httpStream, 200, HttpHeaderBlock.MAIN.getValue(), | ||
| httpHeaders); | ||
|
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| responseHandler.onResponseComplete(httpStream, 1); | ||
| assertThatThrownBy(() -> requestFuture.join()).hasRootCauseInstanceOf(HttpException.class); | ||
| verify(crtConn).shutdown(); | ||
| verify(crtConn).close(); | ||
| verify(httpStream).close(); | ||
| } | ||
|
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| private static HttpHeader[] getHttpHeaders() { | ||
| HttpHeader[] httpHeaders = new HttpHeader[1]; | ||
| httpHeaders[0] = new HttpHeader("Content-Length", "1"); | ||
| return httpHeaders; | ||
| } | ||
| } |
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