org.springframework.cloud.stream.app.aws.AwsIntegrationTestStackRule.java Source code

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Here is the source code for org.springframework.cloud.stream.app.aws.AwsIntegrationTestStackRule.java

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/*
 * Copyright 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 org.springframework.cloud.stream.app.aws;

import java.io.File;
import java.io.FileReader;
import java.io.InputStreamReader;
import java.util.List;
import java.util.Properties;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.junit.Assume;
import org.junit.AssumptionViolatedException;
import org.junit.rules.ExternalResource;

import org.springframework.beans.factory.config.YamlPropertiesFactoryBean;
import org.springframework.core.io.ClassPathResource;
import org.springframework.util.CollectionUtils;
import org.springframework.util.FileCopyUtils;

import com.amazonaws.auth.BasicAWSCredentials;
import com.amazonaws.services.cloudformation.AmazonCloudFormation;
import com.amazonaws.services.cloudformation.AmazonCloudFormationClient;
import com.amazonaws.services.cloudformation.model.CreateStackRequest;
import com.amazonaws.services.cloudformation.model.DeleteStackRequest;
import com.amazonaws.services.cloudformation.model.DescribeStacksRequest;
import com.amazonaws.services.cloudformation.model.OnFailure;
import com.amazonaws.services.cloudformation.model.Stack;
import com.amazonaws.services.cloudformation.model.StackStatus;

/**
 * @author Artem Bilan
 */
public class AwsIntegrationTestStackRule extends ExternalResource {

    private static final Log logger = LogFactory.getLog(AwsIntegrationTestStackRule.class);

    private AmazonCloudFormation cloudFormation;

    private String stackName;

    @Override
    protected void before() throws Throwable {
        try {
            String awsCredentialsDir = System.getProperty("aws.credentials.path");
            File awsCredentialsFile = new File(awsCredentialsDir, "aws.credentials.properties");
            Properties awsCredentials = new Properties();
            awsCredentials.load(new FileReader(awsCredentialsFile));
            String accessKey = awsCredentials.getProperty("cloud.aws.credentials.accessKey");
            String secretKey = awsCredentials.getProperty("cloud.aws.credentials.secretKey");
            this.cloudFormation = new AmazonCloudFormationClient(new BasicAWSCredentials(accessKey, secretKey));

            YamlPropertiesFactoryBean yamlPropertiesFactoryBean = new YamlPropertiesFactoryBean();
            yamlPropertiesFactoryBean.setResources(new ClassPathResource("application.yml"));
            Properties applicationProperties = yamlPropertiesFactoryBean.getObject();

            this.stackName = applicationProperties.getProperty("cloud.aws.stack.name");

            after();

            ClassPathResource stackTemplate = new ClassPathResource("AwsIntegrationTestTemplate.json");
            String templateBody = FileCopyUtils.copyToString(new InputStreamReader(stackTemplate.getInputStream()));

            this.cloudFormation.createStack(new CreateStackRequest().withTemplateBody(templateBody)
                    .withOnFailure(OnFailure.DELETE).withStackName(this.stackName));

            waitForCompletion();

            System.setProperty("cloud.aws.credentials.accessKey", accessKey);
            System.setProperty("cloud.aws.credentials.secretKey", secretKey);
        } catch (Exception e) {
            if (!(e instanceof AssumptionViolatedException)) {
                Assume.assumeTrue("Can't perform AWS integration test because of: " + e.getMessage(), false);
            } else {
                throw e;
            }
        }
    }

    @Override
    protected void after() {
        this.cloudFormation.deleteStack(new DeleteStackRequest().withStackName(this.stackName));
        try {
            waitForCompletion();
        } catch (InterruptedException e) {
            // Ignore the InterruptedException
        } finally {
            System.clearProperty("cloud.aws.credentials.accessKey");
            System.clearProperty("cloud.aws.credentials.secretKey");
        }
    }

    // Wait for a stack to complete transitioning
    // End stack states are:
    //    CREATE_COMPLETE
    //    CREATE_FAILED
    //    DELETE_FAILED
    //    ROLLBACK_FAILED
    // OR the stack no longer exists
    private void waitForCompletion() throws InterruptedException {
        DescribeStacksRequest wait = new DescribeStacksRequest();
        wait.setStackName(this.stackName);
        Boolean completed = false;
        String stackStatus = "Unknown";
        String stackReason = "";

        while (!completed) {
            List<Stack> stacks = null;
            try {
                stacks = this.cloudFormation.describeStacks(wait).getStacks();
            } catch (Exception e) {
                logger.error("cloudFormation.describeStacks() exception", e);
            }
            if (CollectionUtils.isEmpty(stacks)) {
                completed = true;
                stackStatus = StackStatus.DELETE_COMPLETE.toString();
                stackReason = "Stack has been deleted";
            } else {
                for (Stack stack : stacks) {
                    if (stack.getStackStatus().equals(StackStatus.CREATE_COMPLETE.toString())
                            || stack.getStackStatus().equals(StackStatus.CREATE_FAILED.toString())
                            || stack.getStackStatus().equals(StackStatus.ROLLBACK_FAILED.toString())
                            || stack.getStackStatus().equals(StackStatus.DELETE_FAILED.toString())) {
                        completed = true;
                        stackStatus = stack.getStackStatus();
                        stackReason = stack.getStackStatusReason();
                    }
                }
            }

            // Not done yet so sleep for 2 seconds.
            if (!completed) {
                Thread.sleep(2000);
            } else {
                if (stackStatus.equals(StackStatus.CREATE_FAILED.toString())) {
                    Assume.assumeTrue(
                            "The test AWS stack [" + this.stackName + "] cannot be created. Reason: " + stackReason,
                            true);
                }
            }
        }
    }

}