com.netflix.spinnaker.clouddriver.aws.deploy.ops.DeployCloudFormationAtomicOperation.java Source code

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Here is the source code for com.netflix.spinnaker.clouddriver.aws.deploy.ops.DeployCloudFormationAtomicOperation.java

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/*
 * Copyright (c) 2019 Schibsted Media Group.
 *
 * 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 com.netflix.spinnaker.clouddriver.aws.deploy.ops;

import com.amazonaws.services.cloudformation.AmazonCloudFormation;
import com.amazonaws.services.cloudformation.model.*;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.netflix.spinnaker.clouddriver.aws.deploy.description.DeployCloudFormationDescription;
import com.netflix.spinnaker.clouddriver.aws.security.AmazonClientProvider;
import com.netflix.spinnaker.clouddriver.data.task.Task;
import com.netflix.spinnaker.clouddriver.data.task.TaskRepository;
import com.netflix.spinnaker.clouddriver.orchestration.AtomicOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;

import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

@Slf4j
public class DeployCloudFormationAtomicOperation implements AtomicOperation<Map> {

    private static final String BASE_PHASE = "DEPLOY_CLOUDFORMATION_STACK";

    @Autowired
    AmazonClientProvider amazonClientProvider;

    @Autowired
    private ObjectMapper objectMapper;

    private DeployCloudFormationDescription description;

    public DeployCloudFormationAtomicOperation(DeployCloudFormationDescription deployCloudFormationDescription) {
        this.description = deployCloudFormationDescription;
    }

    @Override
    public Map operate(List priorOutputs) {
        Task task = TaskRepository.threadLocalTask.get();
        task.updateStatus(BASE_PHASE, "Configuring CloudFormation Stack");
        AmazonCloudFormation amazonCloudFormation = amazonClientProvider
                .getAmazonCloudFormation(description.getCredentials(), description.getRegion());
        String template;
        try {
            template = objectMapper.writeValueAsString(description.getTemplateBody());
        } catch (JsonProcessingException e) {
            throw new IllegalArgumentException("Could not serialize CloudFormation Stack template body", e);
        }
        List<Parameter> parameters = description.getParameters().entrySet().stream()
                .map(entry -> new Parameter().withParameterKey(entry.getKey()).withParameterValue(entry.getValue()))
                .collect(Collectors.toList());
        try {
            String stackId = createStack(amazonCloudFormation, template, parameters);
            return Collections.singletonMap("stackId", stackId);
        } catch (AlreadyExistsException e) {
            String stackId = updateStack(amazonCloudFormation, template, parameters);
            return Collections.singletonMap("stackId", stackId);
        }
    }

    private String createStack(AmazonCloudFormation amazonCloudFormation, String template,
            List<Parameter> parameters) {
        Task task = TaskRepository.threadLocalTask.get();
        task.updateStatus(BASE_PHASE, "Preparing CloudFormation Stack");
        CreateStackRequest createStackRequest = new CreateStackRequest().withStackName(description.getStackName())
                .withParameters(parameters).withTemplateBody(template);
        task.updateStatus(BASE_PHASE, "Uploading CloudFormation Stack");
        CreateStackResult createStackResult = amazonCloudFormation.createStack(createStackRequest);
        return createStackResult.getStackId();
    }

    private String updateStack(AmazonCloudFormation amazonCloudFormation, String template,
            List<Parameter> parameters) {
        Task task = TaskRepository.threadLocalTask.get();
        task.updateStatus(BASE_PHASE, "CloudFormation Stack exists. Updating it");
        UpdateStackRequest updateStackRequest = new UpdateStackRequest().withStackName(description.getStackName())
                .withParameters(parameters).withTemplateBody(template);
        task.updateStatus(BASE_PHASE, "Uploading CloudFormation Stack");
        try {
            UpdateStackResult updateStackResult = amazonCloudFormation.updateStack(updateStackRequest);
            return updateStackResult.getStackId();
        } catch (AmazonCloudFormationException e) {
            // No changes on the stack, ignore failure
            return amazonCloudFormation
                    .describeStacks(new DescribeStacksRequest().withStackName(description.getStackName()))
                    .getStacks().stream().findFirst()
                    .orElseThrow(() -> new IllegalArgumentException(
                            "No CloudFormation Stack found with stack name " + description.getStackName()))
                    .getStackId();
        }

    }

}