Java tutorial
package br.com.ingenieux.jenkins.plugins.awsebdeployment; /* * #%L * AWS Elastic Beanstalk Deployment Plugin * %% * Copyright (C) 2013 ingenieux Labs * %% * 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. * #L% */ import hudson.EnvVars; import hudson.FilePath; import hudson.Launcher; import hudson.Util; import hudson.model.BuildListener; import hudson.model.Result; import hudson.model.AbstractBuild; import hudson.util.DirScanner; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.io.PrintStream; import java.util.Properties; import java.util.concurrent.TimeUnit; import org.apache.commons.lang.StringUtils; import com.amazonaws.ClientConfiguration; import com.amazonaws.auth.AWSCredentialsProvider; import com.amazonaws.auth.AWSCredentialsProviderChain; import com.amazonaws.auth.BasicAWSCredentials; import com.amazonaws.internal.StaticCredentialsProvider; import com.amazonaws.regions.Region; import com.amazonaws.regions.Regions; import com.amazonaws.services.elasticbeanstalk.AWSElasticBeanstalk; import com.amazonaws.services.elasticbeanstalk.AWSElasticBeanstalkClient; import com.amazonaws.services.elasticbeanstalk.model.CreateApplicationVersionRequest; import com.amazonaws.services.elasticbeanstalk.model.DescribeEnvironmentsRequest; import com.amazonaws.services.elasticbeanstalk.model.DescribeEnvironmentsResult; import com.amazonaws.services.elasticbeanstalk.model.S3Location; import com.amazonaws.services.elasticbeanstalk.model.UpdateEnvironmentRequest; import com.amazonaws.services.s3.AmazonS3; import com.amazonaws.services.s3.AmazonS3Client; public class Deployer { private static final int MAX_ATTEMPTS = 15; private AWSEBDeploymentBuilder context; private PrintStream logger; private AmazonS3 s3; private AWSElasticBeanstalk awseb; private File localArchive; private FilePath rootFileObject; private String keyPrefix; private String bucketName; private String applicationName; private String versionLabel; private String objectKey; private String s3ObjectPath; private EnvVars env; private String environmentName; private BuildListener listener; public Deployer(AWSEBDeploymentBuilder builder, AbstractBuild<?, ?> build, Launcher launcher, BuildListener listener) throws IOException, InterruptedException { this.context = builder; this.logger = listener.getLogger(); this.env = build.getEnvironment(listener); this.listener = listener; this.rootFileObject = new FilePath(build.getWorkspace(), getValue(context.getRootObject())); } public void perform() throws Exception { initAWS(); log("Running Version %s", getVersion()); localArchive = getLocalFileObject(rootFileObject); uploadArchive(); createApplicationVersion(); if (!context.getDeployOptOut()) { updateEnvironments(); } listener.finished(Result.SUCCESS); } private void updateEnvironments() throws Exception { DescribeEnvironmentsResult environments = awseb.describeEnvironments(new DescribeEnvironmentsRequest() .withApplicationName(applicationName).withEnvironmentNames(environmentName)); boolean found = (1 == environments.getEnvironments().size()); if (found) { for (int nAttempt = 1; nAttempt <= MAX_ATTEMPTS; nAttempt++) { String environmentId = environments.getEnvironments().get(0).getEnvironmentId(); log("Attempt %d/%s", nAttempt, MAX_ATTEMPTS); log("Environment found (environment id=%s). Attempting to update environment to version label %s", environmentId, versionLabel); UpdateEnvironmentRequest uavReq = new UpdateEnvironmentRequest() .withEnvironmentName(environmentName).withVersionLabel(versionLabel); try { awseb.updateEnvironment(uavReq); log("q'Apla!"); return; } catch (Exception exc) { log("Problem: " + exc.getMessage()); if (nAttempt == MAX_ATTEMPTS) { log("Giving it up"); throw exc; } log("Reattempting in 90s, up to %d", MAX_ATTEMPTS); Thread.sleep(TimeUnit.SECONDS.toMillis(90)); } } } else { log("Environment not found. Continuing"); } } private void createApplicationVersion() { log("Creating application version %s for application %s for path %s", versionLabel, applicationName, s3ObjectPath); CreateApplicationVersionRequest cavRequest = new CreateApplicationVersionRequest() .withApplicationName(applicationName).withAutoCreateApplication(true) .withSourceBundle(new S3Location(bucketName, objectKey)).withVersionLabel(versionLabel); awseb.createApplicationVersion(cavRequest); } private void uploadArchive() { this.keyPrefix = getValue(context.getKeyPrefix()); this.bucketName = getValue(context.getBucketName()); this.applicationName = getValue(context.getApplicationName()); this.versionLabel = getValue(context.getVersionLabelFormat()); this.environmentName = getValue(context.getEnvironmentName()); objectKey = formatPath("%s/%s-%s.zip", keyPrefix, applicationName, versionLabel); s3ObjectPath = "s3://" + formatPath("%s/%s", bucketName, objectKey); log("Uploading file %s as %s", localArchive.getName(), s3ObjectPath); s3.putObject(bucketName, objectKey, localArchive); } private void initAWS() { log("Creating S3 and AWSEB Client (AWS Access Key Id: %s, region: %s)", context.getAwsAccessKeyId(), context.getAwsRegion()); AWSCredentialsProvider credentials = new AWSCredentialsProviderChain(new StaticCredentialsProvider( new BasicAWSCredentials(context.getAwsAccessKeyId(), context.getAwsSecretSharedKey()))); Region region = Region.getRegion(Regions.fromName(context.getAwsRegion())); ClientConfiguration clientConfig = new ClientConfiguration(); clientConfig.setUserAgent("ingenieux CloudButler/" + getVersion()); s3 = region.createClient(AmazonS3Client.class, credentials, clientConfig); awseb = region.createClient(AWSElasticBeanstalkClient.class, credentials, clientConfig); } private static String VERSION = "UNKNOWN"; private static String getVersion() { if ("UNKNOWN".equals(VERSION)) { try { Properties p = new Properties(); p.load(Deployer.class.getResourceAsStream("version.properties")); VERSION = p.getProperty("awseb-deployer-plugin.version"); } catch (Exception exc) { throw new RuntimeException(exc); } } return VERSION; } void log(String mask, Object... args) { logger.println(String.format(mask, args)); } private File getLocalFileObject(FilePath rootFileObject) throws Exception { File resultFile = File.createTempFile("awseb-", ".zip"); if (!rootFileObject.isDirectory()) { log("Root File Object is a file. We assume its a zip file, which is okay."); rootFileObject.copyTo(new FileOutputStream(resultFile)); } else { log("Zipping contents of Root File Object (%s) into tmp file %s (includes=%s, excludes=%s)", rootFileObject.getName(), resultFile.getName(), context.getIncludes(), context.getExcludes()); rootFileObject.zip(new FileOutputStream(resultFile), new DirScanner.Glob(context.getIncludes(), context.getExcludes())); } return resultFile; } private String formatPath(String mask, Object... args) { return strip(String.format(mask, args).replaceAll("/{2,}", "")); } private String getValue(String value) { return strip(Util.replaceMacro(value, env)); } private static String strip(String str) { return StringUtils.strip(str, "/ "); } }