com.netflix.spinnaker.clouddriver.ecs.provider.agent.EcsClusterCachingAgent.java Source code

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Here is the source code for com.netflix.spinnaker.clouddriver.ecs.provider.agent.EcsClusterCachingAgent.java

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/*
 * Copyright 2017 Lookout, Inc.
 *
 * 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.ecs.provider.agent;

import com.amazonaws.auth.AWSCredentialsProvider;
import com.amazonaws.services.ecs.AmazonECS;
import com.amazonaws.services.ecs.model.ListClustersRequest;
import com.amazonaws.services.ecs.model.ListClustersResult;
import com.netflix.spinnaker.cats.agent.AgentDataType;
import com.netflix.spinnaker.cats.cache.CacheData;
import com.netflix.spinnaker.cats.cache.DefaultCacheData;
import com.netflix.spinnaker.cats.provider.ProviderCache;
import com.netflix.spinnaker.clouddriver.aws.security.AmazonClientProvider;
import com.netflix.spinnaker.clouddriver.aws.security.NetflixAmazonCredentials;
import com.netflix.spinnaker.clouddriver.ecs.cache.Keys;
import org.apache.commons.lang.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;

import static com.netflix.spinnaker.cats.agent.AgentDataType.Authority.AUTHORITATIVE;
import static com.netflix.spinnaker.clouddriver.ecs.cache.Keys.Namespace.ECS_CLUSTERS;

public class EcsClusterCachingAgent extends AbstractEcsCachingAgent<String> {
    private static final Collection<AgentDataType> types = Collections
            .unmodifiableCollection(Arrays.asList(AUTHORITATIVE.forType(ECS_CLUSTERS.toString())));
    private final Logger log = LoggerFactory.getLogger(getClass());

    public EcsClusterCachingAgent(NetflixAmazonCredentials account, String region,
            AmazonClientProvider amazonClientProvider, AWSCredentialsProvider awsCredentialsProvider) {
        super(account, region, amazonClientProvider, awsCredentialsProvider);
    }

    @Override
    public String getAgentType() {
        return accountName + "/" + region + "/" + getClass().getSimpleName();
    }

    @Override
    public Collection<AgentDataType> getProvidedDataTypes() {
        return types;
    }

    @Override
    protected List<String> getItems(AmazonECS ecs, ProviderCache providerCache) {
        List<String> allClusterArns = new LinkedList<>();
        String nextToken = null;
        do {
            ListClustersRequest listClustersRequest = new ListClustersRequest();
            if (nextToken != null) {
                listClustersRequest.setNextToken(nextToken);
            }

            ListClustersResult listClustersResult = ecs.listClusters(listClustersRequest);
            allClusterArns.addAll(listClustersResult.getClusterArns());

            nextToken = listClustersResult.getNextToken();
        } while (nextToken != null && nextToken.length() != 0);

        return allClusterArns;
    }

    @Override
    protected Map<String, Collection<CacheData>> generateFreshData(Collection<String> clusterArns) {
        Collection<CacheData> dataPoints = new LinkedList<>();
        for (String clusterArn : clusterArns) {
            String clusterName = StringUtils.substringAfterLast(clusterArn, "/");

            Map<String, Object> attributes = convertClusterArnToAttributes(accountName, region, clusterArn);

            String key = Keys.getClusterKey(accountName, region, clusterName);
            dataPoints.add(new DefaultCacheData(key, attributes, Collections.emptyMap()));
        }

        log.info("Caching " + dataPoints.size() + " ECS clusters in " + getAgentType());
        Map<String, Collection<CacheData>> dataMap = new HashMap<>();
        dataMap.put(ECS_CLUSTERS.toString(), dataPoints);

        return dataMap;
    }

    public static Map<String, Object> convertClusterArnToAttributes(String accountName, String region,
            String clusterArn) {
        String clusterName = StringUtils.substringAfterLast(clusterArn, "/");

        Map<String, Object> attributes = new HashMap<>();
        attributes.put("account", accountName);
        attributes.put("region", region);
        attributes.put("clusterName", clusterName);
        attributes.put("clusterArn", clusterArn);

        return attributes;
    }
}