| /* |
| * 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.eagle.topology.resolver.impl; |
| |
| import com.fasterxml.jackson.databind.ObjectMapper; |
| import org.apache.eagle.app.utils.AppConstants; |
| import org.apache.eagle.app.utils.connection.InputStreamUtils; |
| import org.apache.eagle.topology.TopologyCheckAppConfig; |
| import org.apache.eagle.topology.resolver.TopologyRackResolver; |
| import org.apache.eagle.topology.resolver.model.Node; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.io.InputStream; |
| |
| /** |
| * resolve rack by ClusterNode API. |
| * https://hadoop.apache.org/docs/r2.6.0/hadoop-yarn/hadoop-yarn-site/ResourceManagerRest.html |
| */ |
| public class ClusterNodeAPITopologyRackResolver implements TopologyRackResolver { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(ClusterNodeAPITopologyRackResolver.class); |
| private static final String DEFAULT_RACK_NAME = "/default-rack"; |
| private String activeApiUrl = ""; |
| private String hostPort = "8041";//TODO configurable |
| private static final ObjectMapper OBJ_MAPPER = new ObjectMapper(); |
| |
| @Override |
| public void prepare(TopologyCheckAppConfig config) { |
| this.activeApiUrl = config.getConfig().getString("topology.resolverAPIUrl"); |
| } |
| |
| @Override |
| public String resolve(String hostname) { |
| String nodeid = hostname + ":" + hostPort; |
| String requestUrl = activeApiUrl + "/" + nodeid; |
| String rack = DEFAULT_RACK_NAME; |
| InputStream is = null; |
| try { |
| is = InputStreamUtils.getInputStream(requestUrl, null, AppConstants.CompressionType.NONE); |
| LOG.info("resolve rack by api url {}", requestUrl); |
| Node node = OBJ_MAPPER.readValue(is, Node.class); |
| rack = node.getNode().getRack(); |
| } catch (Exception e) { |
| LOG.warn("resolve rack by api url {} failed, {}", requestUrl, e); |
| return rack; |
| } finally { |
| if (is != null) { |
| try { |
| is.close(); |
| } catch (Exception e) { |
| LOG.warn("{}", e); |
| } |
| } |
| } |
| return rack; |
| } |
| } |