Java tutorial
/* * The MIT License * * Copyright 2013 Jyrki Puttonen. All rights reserved. * Copyright 2013 Sony Mobile Communications AB. All rights reserved. * * 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.sonymobile.tools.gerrit.gerritevents.workers.rest; import com.google.gson.Gson; import com.sonymobile.tools.gerrit.gerritevents.dto.events.ChangeBasedEvent; import com.sonymobile.tools.gerrit.gerritevents.dto.rest.ChangeId; import com.sonymobile.tools.gerrit.gerritevents.dto.rest.ReviewInput; import com.sonymobile.tools.gerrit.gerritevents.rest.RestConnectionConfig; import org.apache.http.HttpStatus; import org.apache.commons.io.IOUtils; import org.apache.http.HttpHost; import org.apache.http.HttpResponse; import org.apache.http.auth.AuthScope; import org.apache.http.client.methods.HttpPost; import org.apache.http.conn.params.ConnRoutePNames; import org.apache.http.entity.StringEntity; import org.apache.http.impl.client.DefaultHttpClient; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import java.io.PrintStream; import java.io.UnsupportedEncodingException; import java.net.MalformedURLException; import java.net.URL; /** * An abstract Job implementation * to be scheduled on {@link com.sonymobile.tools.gerrit.gerritevents.GerritSendCommandQueue}. * */ public abstract class AbstractRestCommandJob implements Runnable { private static final Logger logger = LoggerFactory.getLogger(AbstractRestCommandJob.class); /** * The GSON API. */ private static final Gson GSON = new Gson(); /** * The config. */ private final RestConnectionConfig config; /** * The listener. */ protected final PrintStream altLogger; /** * The Event. */ protected final ChangeBasedEvent event; /** * Constructor. * * @param config config * @param altLogger alternative stream to also write log output to (ex: a build log) * @param event event */ public AbstractRestCommandJob(RestConnectionConfig config, PrintStream altLogger, ChangeBasedEvent event) { this.config = config; this.altLogger = altLogger; this.event = event; } @Override public void run() { ReviewInput reviewInput = createReview(); String reviewEndpoint = resolveEndpointURL(); HttpPost httpPost = createHttpPostEntity(reviewInput, reviewEndpoint); if (httpPost == null) { return; } DefaultHttpClient httpclient = new DefaultHttpClient(); httpclient.getCredentialsProvider().setCredentials(new AuthScope(null, -1), config.getHttpCredentials()); if (config.getGerritProxy() != null && !config.getGerritProxy().isEmpty()) { try { URL url = new URL(config.getGerritProxy()); HttpHost proxy = new HttpHost(url.getHost(), url.getPort(), url.getProtocol()); httpclient.getParams().setParameter(ConnRoutePNames.DEFAULT_PROXY, proxy); } catch (MalformedURLException e) { logger.error("Could not parse proxy URL, attempting without proxy.", e); if (altLogger != null) { altLogger.print("ERROR Could not parse proxy URL, attempting without proxy. " + e.getMessage()); } } } try { HttpResponse httpResponse = httpclient.execute(httpPost); String response = IOUtils.toString(httpResponse.getEntity().getContent(), "UTF-8"); if (httpResponse.getStatusLine().getStatusCode() != HttpStatus.SC_OK) { logger.error("Gerrit response: {}", httpResponse.getStatusLine().getReasonPhrase()); if (altLogger != null) { altLogger.print("ERROR Gerrit response: " + httpResponse.getStatusLine().getReasonPhrase()); } } } catch (Exception e) { logger.error("Failed to submit result to Gerrit", e); if (altLogger != null) { altLogger.print("ERROR Failed to submit result to Gerrit" + e.toString()); } } } /** * Create the input for the command. * * @return the input */ protected abstract ReviewInput createReview(); /** * Construct the post. * * @param reviewInput input * @param reviewEndpoint end point * @return the entity */ private HttpPost createHttpPostEntity(ReviewInput reviewInput, String reviewEndpoint) { HttpPost httpPost = new HttpPost(reviewEndpoint); String asJson = GSON.toJson(reviewInput); StringEntity entity = null; try { entity = new StringEntity(asJson); } catch (UnsupportedEncodingException e) { logger.error("Failed to create JSON for posting to Gerrit", e); if (altLogger != null) { altLogger.print("ERROR Failed to create JSON for posting to Gerrit: " + e.toString()); } return null; } entity.setContentType("application/json"); httpPost.setEntity(entity); return httpPost; } /** * What it says resolve Endpoint URL. * * @return the url. */ private String resolveEndpointURL() { String gerritFrontEndUrl = config.getGerritFrontEndUrl(); if (!gerritFrontEndUrl.endsWith("/")) { gerritFrontEndUrl = gerritFrontEndUrl + "/"; } ChangeId changeId = new ChangeId(event.getChange().getProject(), event.getChange().getBranch(), event.getChange().getId()); return gerritFrontEndUrl + "a/changes/" + changeId.asUrlPart() + "/revisions/" + event.getPatchSet().getRevision() + "/review"; } /** * REST related configuration. * @return the config */ public RestConnectionConfig getConfig() { return config; } }