| package org.apache.helix.rest.server.resources.helix; |
| |
| /* |
| * 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. |
| */ |
| |
| import java.io.IOException; |
| |
| import org.apache.helix.BaseDataAccessor; |
| import org.apache.helix.ConfigAccessor; |
| import org.apache.helix.HelixAdmin; |
| import org.apache.helix.HelixDataAccessor; |
| import org.apache.helix.manager.zk.ZkBucketDataAccessor; |
| import org.apache.helix.rest.common.ContextPropertyKeys; |
| import org.apache.helix.rest.server.ServerContext; |
| import org.apache.helix.rest.server.resources.AbstractResource; |
| import org.apache.helix.task.TaskDriver; |
| import org.apache.helix.tools.ClusterSetup; |
| import org.apache.helix.zookeeper.api.client.RealmAwareZkClient; |
| import org.apache.helix.zookeeper.datamodel.ZNRecord; |
| import org.apache.helix.zookeeper.impl.client.ZkClient; |
| |
| |
| /** |
| * This class provides methods to access Helix specific objects |
| * such as cluster, instance, job, resource, workflow, etc in |
| * metadata store. |
| */ |
| public class AbstractHelixResource extends AbstractResource { |
| |
| public RealmAwareZkClient getRealmAwareZkClient() { |
| ServerContext serverContext = getServerContext(); |
| return serverContext.getRealmAwareZkClient(); |
| } |
| |
| @Deprecated |
| public ZkClient getZkClient() { |
| return (ZkClient) getRealmAwareZkClient(); |
| } |
| |
| public HelixAdmin getHelixAdmin() { |
| ServerContext serverContext = getServerContext(); |
| return serverContext.getHelixAdmin(); |
| } |
| |
| public ClusterSetup getClusterSetup() { |
| ServerContext serverContext = getServerContext(); |
| return serverContext.getClusterSetup(); |
| } |
| |
| public TaskDriver getTaskDriver(String clusterName) { |
| ServerContext serverContext = getServerContext(); |
| return serverContext.getTaskDriver(clusterName); |
| } |
| |
| public ConfigAccessor getConfigAccessor() { |
| ServerContext serverContext = getServerContext(); |
| return serverContext.getConfigAccessor(); |
| } |
| |
| public HelixDataAccessor getDataAccssor(String clusterName) { |
| ServerContext serverContext = getServerContext(); |
| return serverContext.getDataAccessor(clusterName); |
| } |
| |
| protected BaseDataAccessor<byte[]> getByteArrayDataAccessor() { |
| return getServerContext().getByteArrayZkBaseDataAccessor(); |
| } |
| |
| protected ZkBucketDataAccessor getZkBucketDataAccessor() { |
| return getServerContext().getZkBucketDataAccessor(); |
| } |
| |
| protected static ZNRecord toZNRecord(String data) |
| throws IOException { |
| return ZNRECORD_READER.readValue(data); |
| } |
| |
| private ServerContext getServerContext() { |
| return (ServerContext) _application.getProperties() |
| .get(ContextPropertyKeys.SERVER_CONTEXT.name()); |
| } |
| } |