Github user HeartSaVioR commented on a diff in the pull request: https://github.com/apache/storm/pull/2199#discussion_r134085202 --- Diff: storm-server/src/main/java/org/apache/storm/scheduler/utils/ArtifactoryConfigLoader.java --- @@ -0,0 +1,416 @@ +/** + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you 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.apache.storm.scheduler.utils; + +import java.io.File; +import java.io.FileOutputStream; +import java.io.IOException; +import java.net.URI; +import java.util.Collections; +import java.util.Comparator; +import java.util.Map; +import org.apache.http.HttpEntity; +import org.apache.http.HttpResponse; +import org.apache.http.client.HttpClient; +import org.apache.http.client.ResponseHandler; +import org.apache.http.client.config.RequestConfig; +import org.apache.http.client.methods.HttpGet; +import org.apache.http.client.utils.URIBuilder; +import org.apache.http.impl.client.HttpClientBuilder; +import org.apache.http.util.EntityUtils; +import org.apache.storm.Config; +import org.apache.storm.utils.Time; +import org.json.simple.JSONArray; +import org.json.simple.JSONObject; +import org.json.simple.parser.JSONParser; +import org.json.simple.parser.ParseException; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; +import org.yaml.snakeyaml.Yaml; +import org.yaml.snakeyaml.constructor.SafeConstructor; + +/** + * A dynamic loader for that can load scheduler configurations for user resource guarantees from Artifactory. + * + * <p>Configuration items for this config loader are passed in via config settings in + * each scheduler that has a configurable loader. + * + * <p>For example, the resource aware scheduler has configuration items defined in DaemonConfig.java + * that allow a user to configure which implementation of IConfigLoader to use to load + * specific scheduler configs as well as any parameters to pass into the prepare method of + * that configuration. + * + * <p>resource.aware.scheduler.user.pools.loader can be set to org.apache.storm.scheduler.utils.ArtifactoryConfigLoader + * + * <p>and then resource.aware.scheduler.user.pools.loader.params can be set to any of the following + * + * <p><code> + * {"artifactory.config.loader.uri": "http://artifactory.example.org:9989/artifactory/confs/my_cluster/mt_user_pool"} + * + * {"artifactory.config.loader.uri": "file:///confs/my_cluster/mt_user_pool"} + * + * {"artifactory.config.loader.uri": "file:///confs/my_cluster/mt_user_pool", "artifactory.config.loader.timeout.secs" : "60"} + * </code> + * + */ +public class ArtifactoryConfigLoader implements IConfigLoader { + protected static final String ARTIFACTORY_URI = "artifactory.config.loader.uri"; + protected static final String ARTIFACTORY_TIMEOUT_SECS = "artifactory.config.loader.timeout.secs"; + protected static final String ARTIFACTORY_POLL_TIME_SECS = "artifactory.config.loader.polltime.secs"; + protected static final String ARTIFACTORY_SCHEME = "artifactory.config.loader.scheme"; + protected static final String ARTIFACTORY_BASE_DIRECTORY = "artifactory.config.loader.base.directory"; + protected static final String LOCAL_ARTIFACT_DIR = "scheduler_artifacts"; + static final String cacheFilename = "latest.yaml"; + + private static final Logger LOG = LoggerFactory.getLogger(ArtifactoryConfigLoader.class); + + @SuppressWarnings("rawtypes") + private Map _conf; + private int _artifactoryPollTimeSecs = 600; + private boolean _cacheInitialized = false; + // Location of the file in the artifactory archive. Also used to name file in cache. + private String _localCacheDir; + private String _artifactoryScheme = "http"; + private String _baseDirectory = "/artifactory"; + private int _lastReturnedTime = 0; + private int _timeoutSeconds = 10; --- End diff -- minor: Maybe better to have a constant (private static final) for `10`.
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