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Use fixture to test repository-s3 plugin (#29296)
This commit adds a new fixture that emulates a S3 service in order to improve the existing integration tests. This is very similar to what has been made for Google Cloud Storage in #28788, and such tests would have helped a lot to catch bugs like #22534. The AmazonS3Fixture is brittle and only implements the very necessary stuff for the S3 repository to work, but at least it works and can be adapted for specific tests needs.
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137 changes: 137 additions & 0 deletions
137
plugins/repository-s3/src/test/java/org/elasticsearch/repositories/s3/AmazonS3Fixture.java
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| /* | ||
| * Licensed to Elasticsearch under one or more contributor | ||
| * license agreements. See the NOTICE file distributed with | ||
| * this work for additional information regarding copyright | ||
| * ownership. Elasticsearch licenses this file to you 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 org.elasticsearch.repositories.s3; | ||
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| import com.sun.net.httpserver.HttpExchange; | ||
| import com.sun.net.httpserver.HttpHandler; | ||
| import com.sun.net.httpserver.HttpServer; | ||
| import org.elasticsearch.common.SuppressForbidden; | ||
| import org.elasticsearch.common.io.Streams; | ||
| import org.elasticsearch.mocksocket.MockHttpServer; | ||
| import org.elasticsearch.repositories.s3.AmazonS3TestServer.Response; | ||
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|
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| import java.io.ByteArrayOutputStream; | ||
| import java.io.IOException; | ||
| import java.lang.management.ManagementFactory; | ||
| import java.net.Inet6Address; | ||
| import java.net.InetAddress; | ||
| import java.net.InetSocketAddress; | ||
| import java.net.SocketAddress; | ||
| import java.nio.file.Files; | ||
| import java.nio.file.Path; | ||
| import java.nio.file.Paths; | ||
| import java.nio.file.StandardCopyOption; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
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| import static java.util.Collections.singleton; | ||
| import static java.util.Collections.singletonList; | ||
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| /** | ||
| * {@link AmazonS3Fixture} is a fixture that emulates a S3 service. | ||
| * <p> | ||
| * It starts an asynchronous socket server that binds to a random local port. The server parses | ||
| * HTTP requests and uses a {@link AmazonS3TestServer} to handle them before returning | ||
| * them to the client as HTTP responses. | ||
| */ | ||
| public class AmazonS3Fixture { | ||
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| public static void main(String[] args) throws Exception { | ||
| if (args == null || args.length != 2) { | ||
| throw new IllegalArgumentException("AmazonS3Fixture <working directory> <bucket>"); | ||
| } | ||
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| final InetSocketAddress socketAddress = new InetSocketAddress(InetAddress.getLoopbackAddress(), 0); | ||
| final HttpServer httpServer = MockHttpServer.createHttp(socketAddress, 0); | ||
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| try { | ||
| final Path workingDirectory = workingDir(args[0]); | ||
| /// Writes the PID of the current Java process in a `pid` file located in the working directory | ||
| writeFile(workingDirectory, "pid", ManagementFactory.getRuntimeMXBean().getName().split("@")[0]); | ||
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| final String addressAndPort = addressToString(httpServer.getAddress()); | ||
| // Writes the address and port of the http server in a `ports` file located in the working directory | ||
| writeFile(workingDirectory, "ports", addressAndPort); | ||
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| // Emulates S3 | ||
| final String storageUrl = "http://" + addressAndPort; | ||
| final AmazonS3TestServer storageTestServer = new AmazonS3TestServer(storageUrl); | ||
| storageTestServer.createBucket(args[1]); | ||
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| httpServer.createContext("/", new ResponseHandler(storageTestServer)); | ||
| httpServer.start(); | ||
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| // Wait to be killed | ||
| Thread.sleep(Long.MAX_VALUE); | ||
|
|
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| } finally { | ||
| httpServer.stop(0); | ||
| } | ||
| } | ||
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| @SuppressForbidden(reason = "Paths#get is fine - we don't have environment here") | ||
| private static Path workingDir(final String dir) { | ||
| return Paths.get(dir); | ||
| } | ||
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| private static void writeFile(final Path dir, final String fileName, final String content) throws IOException { | ||
| final Path tempPidFile = Files.createTempFile(dir, null, null); | ||
| Files.write(tempPidFile, singleton(content)); | ||
| Files.move(tempPidFile, dir.resolve(fileName), StandardCopyOption.ATOMIC_MOVE); | ||
| } | ||
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| private static String addressToString(final SocketAddress address) { | ||
| final InetSocketAddress inetSocketAddress = (InetSocketAddress) address; | ||
| if (inetSocketAddress.getAddress() instanceof Inet6Address) { | ||
| return "[" + inetSocketAddress.getHostString() + "]:" + inetSocketAddress.getPort(); | ||
| } else { | ||
| return inetSocketAddress.getHostString() + ":" + inetSocketAddress.getPort(); | ||
| } | ||
| } | ||
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| static class ResponseHandler implements HttpHandler { | ||
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| private final AmazonS3TestServer storageServer; | ||
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| private ResponseHandler(final AmazonS3TestServer storageServer) { | ||
| this.storageServer = storageServer; | ||
| } | ||
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| @Override | ||
| public void handle(HttpExchange exchange) throws IOException { | ||
| String method = exchange.getRequestMethod(); | ||
| String path = storageServer.getEndpoint() + exchange.getRequestURI().getRawPath(); | ||
| String query = exchange.getRequestURI().getRawQuery(); | ||
| Map<String, List<String>> headers = exchange.getRequestHeaders(); | ||
| ByteArrayOutputStream out = new ByteArrayOutputStream(); | ||
| Streams.copy(exchange.getRequestBody(), out); | ||
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| final Response storageResponse = storageServer.handle(method, path, query, headers, out.toByteArray()); | ||
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| Map<String, List<String>> responseHeaders = exchange.getResponseHeaders(); | ||
| responseHeaders.put("Content-Type", singletonList(storageResponse.contentType)); | ||
| storageResponse.headers.forEach((k, v) -> responseHeaders.put(k, singletonList(v))); | ||
| exchange.sendResponseHeaders(storageResponse.status.getStatus(), storageResponse.body.length); | ||
| if (storageResponse.body.length > 0) { | ||
| exchange.getResponseBody().write(storageResponse.body); | ||
| } | ||
| exchange.close(); | ||
| } | ||
| } | ||
| } |
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