| package org.apache.helix.model; |
| |
| /* |
| * 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.ArrayList; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| |
| import org.apache.helix.model.HelixConfigScope.ConfigScopeProperty; |
| import org.apache.helix.model.builder.ConfigScopeBuilder; |
| import org.apache.helix.util.StringTemplate; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * @deprecated replaced by {@link HelixConfigScope} |
| */ |
| @Deprecated |
| public class ConfigScope { |
| private static Logger LOG = LoggerFactory.getLogger(ConfigScope.class); |
| |
| private static final List<ConfigScopeProperty> scopePriority = |
| new ArrayList<ConfigScopeProperty>(); |
| private static final Map<ConfigScopeProperty, Map<ConfigScopeProperty, ConfigScopeProperty>> scopeTransition = |
| new HashMap<ConfigScopeProperty, Map<ConfigScopeProperty, ConfigScopeProperty>>(); |
| private static final StringTemplate template = new StringTemplate(); |
| static { |
| // scope priority: CLUSTER > PARTICIPANT > RESOURCE > PARTITION |
| scopePriority.add(ConfigScopeProperty.CLUSTER); |
| scopePriority.add(ConfigScopeProperty.PARTICIPANT); |
| scopePriority.add(ConfigScopeProperty.RESOURCE); |
| scopePriority.add(ConfigScopeProperty.PARTITION); |
| |
| // scope transition table to check valid inputs |
| scopeTransition.put(ConfigScopeProperty.CLUSTER, |
| new HashMap<ConfigScopeProperty, ConfigScopeProperty>()); |
| scopeTransition.get(ConfigScopeProperty.CLUSTER).put(ConfigScopeProperty.PARTICIPANT, |
| ConfigScopeProperty.PARTICIPANT); |
| scopeTransition.get(ConfigScopeProperty.CLUSTER).put(ConfigScopeProperty.RESOURCE, |
| ConfigScopeProperty.RESOURCE); |
| scopeTransition.put(ConfigScopeProperty.RESOURCE, |
| new HashMap<ConfigScopeProperty, ConfigScopeProperty>()); |
| scopeTransition.get(ConfigScopeProperty.RESOURCE).put(ConfigScopeProperty.PARTITION, |
| ConfigScopeProperty.PARTITION); |
| |
| // string templates to generate znode path/index |
| // @formatter:off |
| template.addEntry(ConfigScopeProperty.CLUSTER, 2, |
| "/{clusterName}/CONFIGS/CLUSTER/{clusterName}"); |
| template.addEntry(ConfigScopeProperty.PARTICIPANT, 2, |
| "/{clusterName}/CONFIGS/PARTICIPANT/{participantName}"); |
| template.addEntry(ConfigScopeProperty.RESOURCE, 2, |
| "/{clusterName}/CONFIGS/RESOURCE/{resourceName}"); |
| template.addEntry(ConfigScopeProperty.PARTITION, 3, |
| "/{clusterName}/CONFIGS/RESOURCE/{resourceName}|{partitionName}"); |
| // @formatter:on |
| } |
| |
| private final String _clusterName; |
| private final ConfigScopeProperty _scope; |
| |
| /** |
| * _scopeStr is like: |
| * "/ClusterName/CONFIGS/{CLUSTER|PARTICIPANT|RESOURCE|PARTITION}/{clusterName|instanceName|resourceName}{|partitionName}" |
| */ |
| private final String _scopeStr; |
| |
| public ConfigScope(ConfigScopeBuilder configScopeBuilder) { |
| Map<ConfigScopeProperty, String> scopeMap = configScopeBuilder.getScopeMap(); |
| List<String> keys = new ArrayList<String>(); |
| |
| ConfigScopeProperty curScope = null; |
| for (ConfigScopeProperty scope : scopePriority) { |
| if (scopeMap.containsKey(scope)) { |
| if (curScope == null && scope == ConfigScopeProperty.CLUSTER) { |
| keys.add(scopeMap.get(scope)); |
| curScope = ConfigScopeProperty.CLUSTER; |
| } else if (curScope == null) { |
| throw new IllegalArgumentException("Missing CLUSTER scope. Can't build scope using " |
| + configScopeBuilder); |
| } else { |
| if (!scopeTransition.containsKey(curScope) |
| || !scopeTransition.get(curScope).containsKey(scope)) { |
| throw new IllegalArgumentException("Can't build scope using " + configScopeBuilder); |
| } |
| keys.add(scopeMap.get(scope)); |
| curScope = scopeTransition.get(curScope).get(scope); |
| } |
| } |
| } |
| |
| if (curScope == ConfigScopeProperty.CLUSTER) { |
| // append one more {clusterName} |
| keys.add(scopeMap.get(ConfigScopeProperty.CLUSTER)); |
| } |
| |
| String scopeStr = template.instantiate(curScope, keys.toArray(new String[0])); |
| |
| _clusterName = keys.get(0); |
| _scopeStr = scopeStr; |
| _scope = curScope; |
| } |
| |
| public ConfigScopeProperty getScope() { |
| return _scope; |
| } |
| |
| public String getClusterName() { |
| return _clusterName; |
| } |
| |
| public String getScopeStr() { |
| return _scopeStr; |
| } |
| |
| @Override |
| public String toString() { |
| return super.toString() + ": " + _scopeStr; |
| } |
| } |