jp.classmethod.aws.gradle.cloudformation.AmazonCloudFormationWaitStackStatusTask.java Source code

Introduction

Here is the source code for jp.classmethod.aws.gradle.cloudformation.AmazonCloudFormationWaitStackStatusTask.java

Source

/*
 * Copyright 2015-2016 the original author or authors.
 *
 * 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.
 */
package jp.classmethod.aws.gradle.cloudformation;

import java.util.Arrays;
import java.util.List;

import lombok.Getter;
import lombok.Setter;

import org.gradle.api.GradleException;
import org.gradle.api.internal.ConventionTask;
import org.gradle.api.tasks.TaskAction;

import com.amazonaws.AmazonServiceException;
import com.amazonaws.services.cloudformation.AmazonCloudFormation;
import com.amazonaws.services.cloudformation.model.DescribeStacksRequest;
import com.amazonaws.services.cloudformation.model.DescribeStacksResult;
import com.amazonaws.services.cloudformation.model.Stack;

public class AmazonCloudFormationWaitStackStatusTask extends ConventionTask {

    @Getter
    @Setter
    private String stackName;

    @Getter
    @Setter
    private List<String> successStatuses = Arrays.asList("CREATE_COMPLETE", "UPDATE_COMPLETE", "DELETE_COMPLETE");

    @Getter
    @Setter
    private List<String> waitStatuses = Arrays.asList("CREATE_IN_PROGRESS", "ROLLBACK_IN_PROGRESS",
            "DELETE_IN_PROGRESS", "UPDATE_IN_PROGRESS", "UPDATE_COMPLETE_CLEANUP_IN_PROGRESS",
            "UPDATE_ROLLBACK_IN_PROGRESS", "UPDATE_ROLLBACK_COMPLETE_CLEANUP_IN_PROGRESS");

    @Getter
    @Setter
    private int loopTimeout = 900; // sec

    @Getter
    @Setter
    private int loopWait = 10; // sec

    @Getter
    @Setter
    private boolean found;

    @Getter
    @Setter
    private String lastStatus;

    public AmazonCloudFormationWaitStackStatusTask() {
        setDescription("Wait cfn stack for specific status.");
        setGroup("AWS");
    }

    @TaskAction
    public void waitStackForStatus() throws InterruptedException {
        // to enable conventionMappings feature
        String stackName = getStackName();
        List<String> successStatuses = getSuccessStatuses();
        List<String> waitStatuses = getWaitStatuses();
        int loopTimeout = getLoopTimeout();
        int loopWait = getLoopWait();

        if (stackName == null) {
            throw new GradleException("stackName is not specified");
        }

        AmazonCloudFormationPluginExtension ext = getProject().getExtensions()
                .getByType(AmazonCloudFormationPluginExtension.class);
        AmazonCloudFormation cfn = ext.getClient();

        long start = System.currentTimeMillis();
        while (true) {
            if (System.currentTimeMillis() > start + (loopTimeout * 1000)) {
                throw new GradleException("Timeout");
            }
            try {
                DescribeStacksResult describeStackResult = cfn
                        .describeStacks(new DescribeStacksRequest().withStackName(stackName));
                Stack stack = describeStackResult.getStacks().get(0);
                if (stack == null) {
                    throw new GradleException("stack " + stackName + " is not exists");
                }
                found = true;
                lastStatus = stack.getStackStatus();
                if (successStatuses.contains(lastStatus)) {
                    getLogger().info("Status of stack {} is now {}.", stackName, lastStatus);
                    printOutputs(stack);
                    break;
                } else if (waitStatuses.contains(lastStatus)) {
                    getLogger().info("Status of stack {} is {}...", stackName, lastStatus);
                    Thread.sleep(loopWait * 1000);
                } else {
                    // fail if not contains in successStatus or waitStatus
                    throw new GradleException(
                            "Status of stack " + stackName + " is " + lastStatus + ".  It seems to be failed.");
                }
            } catch (AmazonServiceException e) {
                if (found) {
                    break;
                } else {
                    throw new GradleException("Fail to describe stack: " + stackName, e);
                }
            }
        }
    }

    private void printOutputs(Stack stack) {
        getLogger().info("==== Outputs ====");
        stack.getOutputs().stream().forEach(
                o -> getLogger().info("{} ({}) = {}", o.getOutputKey(), o.getDescription(), o.getOutputValue()));
    }
}