Java tutorial
/** * $Id: $ * $Date: $ * */ package org.xmlsh.aws; import java.io.IOException; import java.util.List; import javax.xml.stream.XMLStreamException; import net.sf.saxon.s9api.SaxonApiException; import org.xmlsh.aws.util.AWSASCommand; import org.xmlsh.core.CoreException; import org.xmlsh.core.Options; import org.xmlsh.core.SafeXMLStreamWriter; import org.xmlsh.core.UnexpectedException; import org.xmlsh.core.XValue; import org.xmlsh.core.io.OutputPort; import org.xmlsh.util.Util; import com.amazonaws.AmazonServiceException; import com.amazonaws.services.autoscaling.model.AutoScalingGroup; import com.amazonaws.services.autoscaling.model.DescribeAutoScalingGroupsRequest; import com.amazonaws.services.autoscaling.model.DescribeAutoScalingGroupsResult; import com.amazonaws.services.autoscaling.model.EnabledMetric; import com.amazonaws.services.autoscaling.model.Instance; import com.amazonaws.services.autoscaling.model.SuspendedProcess; import com.amazonaws.services.autoscaling.model.TagDescription; public class asDescribeGroups extends AWSASCommand { @Override public int run(List<XValue> args) throws Exception { Options opts = getOptions(); parseOptions(opts, args); setSerializeOpts(opts); args = opts.getRemainingArgs(); parseCommonOptions(opts); try { getASClient(opts); } catch (UnexpectedException e) { usage(e.getLocalizedMessage()); return 1; } int ret = describe(args); return ret; } private int describe(List<XValue> args) throws IOException, XMLStreamException, SaxonApiException, CoreException, InterruptedException { OutputPort stdout = getStdout(); mWriter = new SafeXMLStreamWriter(stdout.asXMLStreamWriter(getSerializeOpts())); startDocument(); startElement(getName()); DescribeAutoScalingGroupsRequest request = new DescribeAutoScalingGroupsRequest(); if (!args.isEmpty()) request.setAutoScalingGroupNames(Util.toStringList(args)); traceCall("describeAutoScalingGroups"); DescribeAutoScalingGroupsResult result = null; int retry = rateRetry; int delay = retryDelay; do { try { result = getAWSClient().describeAutoScalingGroups(request); break; } catch (AmazonServiceException e) { mShell.printErr("AmazonServiceException", e); if (retry > 0 && Util.isEqual("RequestLimitExceeded", e.getErrorCode())) { mShell.printErr("AWS RequestLimitExceeded - sleeping " + delay); Thread.sleep(delay); retry--; delay *= 2; } else throw e; } } while (retry > 0); for (AutoScalingGroup group : result.getAutoScalingGroups()) write(group); endElement(); endDocument(); closeWriter(); stdout.writeSequenceTerminator(getSerializeOpts()); return 0; } private void write(AutoScalingGroup group) throws XMLStreamException { startElement("group"); attribute("group-arn", group.getAutoScalingGroupARN()); attribute("name", group.getAutoScalingGroupName()); attribute("create-time", group.getCreatedTime()); attribute("default-cooldown", group.getDefaultCooldown()); attribute("desired-capacity", group.getDesiredCapacity()); attribute("health-check-grace-period", group.getHealthCheckGracePeriod()); attribute("health-check-type", group.getHealthCheckType()); attribute("launch-configuration-name", group.getLaunchConfigurationName()); attribute("max-size", group.getMaxSize()); attribute("min-size", group.getMinSize()); attribute("placement-group", group.getPlacementGroup()); attribute("status", group.getStatus()); attribute("vpc-zone-id", group.getVPCZoneIdentifier()); writeStringList("termination-policies", "termination-policy", "name", group.getTerminationPolicies()); writeZones(group.getAvailabilityZones()); writeMetrics(group.getEnabledMetrics()); writeInstances(group.getInstances()); writeELBNames(group.getLoadBalancerNames()); writeSuspendedProcesses(group.getSuspendedProcesses()); writeTagDescriptions(group.getTags()); endElement(); } private void writeTagDescriptions(List<TagDescription> tags) throws XMLStreamException { startElement("tags"); for (TagDescription tag : tags) writeTagDescription(tag); endElement(); } private void writeTagDescription(TagDescription tag) throws XMLStreamException { startElement("tag"); attribute("key", tag.getKey()); attribute("propagate-at-launch", tag.getPropagateAtLaunch()); attribute("resource-id", tag.getResourceId()); attribute("resource-type", tag.getResourceType()); attribute("value", tag.getValue()); endElement(); } private void writeSuspendedProcesses(List<SuspendedProcess> suspendedProcesses) throws XMLStreamException { startElement("suspended-processes"); for (SuspendedProcess proc : suspendedProcesses) writeSuspendedProcess(proc); endElement(); } private void writeSuspendedProcess(SuspendedProcess proc) throws XMLStreamException { startElement("process"); attribute("name", proc.getProcessName()); attribute("reason", proc.getSuspensionReason()); endElement(); } private void writeELBNames(List<String> loadBalancerNames) throws XMLStreamException { writeStringList("elb-names", "elb", "name", loadBalancerNames); } private void writeInstances(List<Instance> instances) throws XMLStreamException { startElement("instances"); for (Instance inst : instances) { startElement("instance"); attribute("availability-zone", inst.getAvailabilityZone()); attribute("health-status", inst.getHealthStatus()); attribute("instance-id", inst.getInstanceId()); attribute("launch-configuration", inst.getLaunchConfigurationName()); attribute("lifecycle-state", inst.getLifecycleState()); endElement(); } endElement(); } private void writeMetrics(List<EnabledMetric> enabledMetrics) throws XMLStreamException { startElement("enabled-metrics"); for (EnabledMetric metric : enabledMetrics) { startElement("enabled-metric"); attribute("granularity", metric.getGranularity()); attribute("metric", metric.getMetric()); endElement(); } endElement(); } } /* * Copyright (C) 2008-2014 David A. Lee. * * The contents of this file are subject to the "Simplified BSD License" (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.opensource.org/licenses/bsd-license.php * Software distributed under the License is distributed on an "AS IS" basis, * WITHOUT WARRANTY OF ANY KIND, either express or implied. * See the License for the specific language governing rights and limitations under the License. * * The Original Code is: all this file. * * The Initial Developer of the Original Code is David A. Lee * * Portions created by (your name) are Copyright (C) (your legal entity). All Rights Reserved. * * Contributor(s): David A. Lee * */