package br.com.ingenieux.mojo.beanstalk.bg;
/*
* 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.
*/
import br.com.ingenieux.mojo.beanstalk.AbstractNeedsEnvironmentMojo;
import br.com.ingenieux.mojo.beanstalk.cmd.env.update.UpdateEnvironmentCommand;
import br.com.ingenieux.mojo.beanstalk.cmd.env.update.UpdateEnvironmentContextBuilder;
import br.com.ingenieux.mojo.beanstalk.cmd.env.waitfor.WaitForEnvironmentCommand;
import br.com.ingenieux.mojo.beanstalk.cmd.env.waitfor.WaitForEnvironmentContextBuilder;
import com.amazonaws.services.elasticbeanstalk.model.EnvironmentDescription;
import com.amazonaws.services.elasticbeanstalk.model.SwapEnvironmentCNAMEsRequest;
import com.google.common.base.Function;
import com.google.common.collect.Collections2;
import org.apache.maven.plugins.annotations.Mojo;
import org.apache.maven.plugins.annotations.Parameter;
import java.util.Collection;
import static java.lang.String.format;
/**
* <p>Implements Bluegreen Deployment</p>
*
* @since 1.3.0
*/
@Mojo(name="blue-green")
public class BluegreenDeploymentMojo extends AbstractNeedsEnvironmentMojo {
/**
* Version Label to use. Defaults to Project Version
*/
@Parameter(property = "beanstalk.versionLabel", defaultValue = "${project.version}")
String versionLabel;
/**
* environmentNamePrefix - Matches all environment names prefixed with
**/
@Parameter(property = "beanstalk.environmentNamePrefix", required=true, defaultValue = "${beanstalk.environmentName}")
protected String environmentNamePrefix;
@Override
protected Object executeInternal() throws Exception {
versionLabel = lookupVersionLabel(applicationName, versionLabel);
getLog().info(format("Using version %s", versionLabel));
Collection<EnvironmentDescription> envs = new WaitForEnvironmentCommand(this).lookupInternal(new WaitForEnvironmentContextBuilder().withApplicationName(applicationName).withEnvironmentRef(environmentNamePrefix + "*").build());
if (envs.size() > 2) {
final Collection<String> environmentList = Collections2.transform(envs, new Function<EnvironmentDescription, String>() {
@Override
public String apply(EnvironmentDescription input) {
return format("%s[%s]", input.getEnvironmentId(), input.getEnvironmentName());
}
});
String message = "Ooops. There are multiple environments matching the lookup spec: " + environmentList;
getLog().warn(message);
getLog().warn("Will pick one at random anyway as long as it uses WebServer tier name");
}
String otherEnvId = null;
for (EnvironmentDescription e : envs) {
if (! e.getEnvironmentId().equals(curEnv.getEnvironmentId()) && "WebServer".equals(e.getTier().getName())) {
otherEnvId = e.getEnvironmentId();
break;
}
}
getLog().info(format("(Green) Environment with environmentId['%s'] will be prepared once its ready to update", curEnv.getEnvironmentId()));
new WaitForEnvironmentCommand(this).execute(new WaitForEnvironmentContextBuilder().withStatusToWaitFor("Ready").withApplicationName(applicationName).withEnvironmentRef(curEnv.getEnvironmentId()).build());
getLog().info(format("(Blue) Environment with environmentId['%s'] will be prepared once its ready to update", otherEnvId));
new WaitForEnvironmentCommand(this).execute(new WaitForEnvironmentContextBuilder().withStatusToWaitFor("Ready").withApplicationName(applicationName).withEnvironmentRef(otherEnvId).build());
getLog().info(format("(Blue) Updating environmentId to version %s", versionLabel));
new UpdateEnvironmentCommand(this).execute(new UpdateEnvironmentContextBuilder().withEnvironmentId(otherEnvId).withVersionLabel(versionLabel).build());
getLog().info(format("(Blue) Waiting for environmentId['%s'] to get ready and green prior to switching", otherEnvId));
new WaitForEnvironmentCommand(this).execute(new WaitForEnvironmentContextBuilder().withStatusToWaitFor("Ready").withApplicationName(applicationName).withHealth("Green").withEnvironmentRef(otherEnvId).build());
getLog().info(format("Ok. Switching"));
getService().swapEnvironmentCNAMEs(new SwapEnvironmentCNAMEsRequest().withDestinationEnvironmentId(curEnv.getEnvironmentId()).withSourceEnvironmentId(otherEnvId));
getLog().info(format("Done."));
return null; //To change body of implemented methods use File | Settings | File Templates.
}
}