package org.apache.helix.controller.stages;
/*
* 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
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*/
import org.apache.helix.HelixDataAccessor;
import org.apache.helix.HelixManager;
import org.apache.helix.api.Cluster;
import org.apache.helix.api.accessor.ClusterAccessor;
import org.apache.helix.api.id.ClusterId;
import org.apache.helix.controller.pipeline.AbstractBaseStage;
import org.apache.helix.controller.pipeline.StageException;
import org.apache.helix.monitoring.mbeans.ClusterStatusMonitor;
import org.apache.log4j.Logger;
public class ReadClusterDataStage extends AbstractBaseStage {
private static final Logger LOG = Logger.getLogger(ReadClusterDataStage.class.getName());
@Override
public void process(ClusterEvent event) throws Exception {
long startTime = System.currentTimeMillis();
LOG.info("START ReadClusterDataStage.process()");
HelixManager manager = event.getAttribute("helixmanager");
if (manager == null) {
throw new StageException("HelixManager attribute value is null");
}
HelixDataAccessor accessor = manager.getHelixDataAccessor();
ClusterId clusterId = ClusterId.from(manager.getClusterName());
ClusterAccessor clusterAccessor = new ClusterAccessor(clusterId, accessor);
Cluster cluster = clusterAccessor.readCluster();
ClusterStatusMonitor clusterStatusMonitor =
(ClusterStatusMonitor) event.getAttribute("clusterStatusMonitor");
if (clusterStatusMonitor != null) {
// TODO fix it
// int disabledInstances = 0;
// int disabledPartitions = 0;
// for (InstanceConfig config : _cache._instanceConfigMap.values()) {
// if (config.getInstanceEnabled() == false) {
// disabledInstances++;
// }
// if (config.getDisabledPartitions() != null) {
// disabledPartitions += config.getDisabledPartitions().size();
// }
// }
// clusterStatusMonitor.setClusterStatusCounters(_cache._liveInstanceMap.size(),
// _cache._instanceConfigMap.size(), disabledInstances, disabledPartitions);
}
event.addAttribute("ClusterDataCache", cluster);
long endTime = System.currentTimeMillis();
LOG.info("END ReadClusterDataStage.process(). took: " + (endTime - startTime) + " ms");
}
}