| package org.apache.helix.taskexecution; |
| |
| /* |
| * 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.util.Arrays; |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import org.codehaus.jackson.map.ObjectMapper; |
| |
| public class Dag { |
| private Map<String, Node> nodes = new HashMap<String, Dag.Node>(); |
| |
| public static class Node { |
| private String id; |
| private int numPartitions; |
| private Set<String> parentIds; |
| |
| public Node(String id, int numPartitions, Set<String> parentIds) { |
| this.setId(id); |
| this.setNumPartitions(numPartitions); |
| this.setParentIds(parentIds); |
| } |
| |
| public Node(String id, int numPartitions, String parentIdsStr) { |
| this.setId(id); |
| this.setNumPartitions(numPartitions); |
| if (parentIdsStr != null && !parentIdsStr.trim().isEmpty()) { |
| String tmp[] = parentIdsStr.split(","); |
| parentIds = new HashSet<String>(); |
| parentIds.addAll(Arrays.asList(tmp)); |
| } |
| this.setParentIds(parentIds); |
| } |
| |
| public Node() { |
| setId(""); |
| setNumPartitions(0); |
| setParentIds(new HashSet<String>()); |
| } |
| |
| public String getId() { |
| return id; |
| } |
| |
| public int getNumPartitions() { |
| return numPartitions; |
| } |
| |
| public Set<String> getParentIds() { |
| return parentIds; |
| } |
| |
| public static Node fromJson(String json) throws Exception { |
| ObjectMapper mapper = new ObjectMapper(); |
| return mapper.readValue(json, Node.class); |
| } |
| |
| public String toJson() throws Exception { |
| ObjectMapper mapper = new ObjectMapper(); |
| return mapper.defaultPrettyPrintingWriter().writeValueAsString(this); |
| } |
| |
| public void setId(String id) { |
| this.id = id; |
| } |
| |
| public void setNumPartitions(int numPartitions) { |
| this.numPartitions = numPartitions; |
| } |
| |
| public void setParentIds(Set<String> parentIds) { |
| this.parentIds = parentIds; |
| } |
| } |
| |
| public void addNode(Node node) { |
| getNodes().put(node.getId(), node); |
| } |
| |
| public Node getNode(String id) { |
| return getNodes().get(id); |
| } |
| |
| public Set<String> getNodeIds() { |
| return getNodes().keySet(); |
| } |
| |
| public static Dag fromJson(String json) throws Exception { |
| ObjectMapper mapper = new ObjectMapper(); |
| return mapper.readValue(json, Dag.class); |
| } |
| |
| public String toJson() throws Exception { |
| ObjectMapper mapper = new ObjectMapper(); |
| return mapper.defaultPrettyPrintingWriter().writeValueAsString(this); |
| } |
| |
| public Map<String, Node> getNodes() { |
| return nodes; |
| } |
| |
| public void setNodes(Map<String, Node> nodes) { |
| this.nodes = nodes; |
| } |
| } |