StackResourceUserTagsFactoryBean.java

/*
 * Copyright 2013-2014 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.aws.core.env.stack.config;

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;
import com.amazonaws.services.cloudformation.model.Tag;
import org.springframework.beans.factory.config.AbstractFactoryBean;

import java.util.LinkedHashMap;
import java.util.Map;

/**
 * @author Agim Emruli
 */
public class StackResourceUserTagsFactoryBean extends AbstractFactoryBean<Map<String, String>> {

    private final AmazonCloudFormation amazonCloudFormation;
    private final StackNameProvider stackNameProvider;

    public StackResourceUserTagsFactoryBean(AmazonCloudFormation amazonCloudFormation, StackNameProvider stackNameProvider) {
        this.amazonCloudFormation = amazonCloudFormation;
        this.stackNameProvider = stackNameProvider;
    }

    @Override
    public Class<?> getObjectType() {
        return Map.class;
    }

    @Override
    protected Map<String, String> createInstance() throws Exception {
        LinkedHashMap<String, String> userTags = new LinkedHashMap<>();
        DescribeStacksResult stacksResult = this.amazonCloudFormation.describeStacks(new DescribeStacksRequest().withStackName(this.stackNameProvider.getStackName()));
        for (Stack stack : stacksResult.getStacks()) {
            for (Tag tag : stack.getTags()) {
                userTags.put(tag.getKey(), tag.getValue());
            }
        }
        return userTags;
    }
}