IndexReinitializeOperation.java

/**
 * Copyright 2008 the original author or authors.
 *
 * Licensed 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 net.sf.katta.operation.master;

import java.util.List;

import net.sf.katta.master.MasterContext;
import net.sf.katta.operation.OperationId;
import net.sf.katta.operation.node.OperationResult;
import net.sf.katta.protocol.InteractionProtocol;
import net.sf.katta.protocol.metadata.IndexMetaData;

import org.I0Itec.zkclient.ExceptionUtil;

@SuppressWarnings("serial")
public class IndexReinitializeOperation extends IndexDeployOperation {

  public IndexReinitializeOperation(IndexMetaData indexMD) {
    super(indexMD.getName(), indexMD.getPath(), indexMD.getReplicationLevel());
  }

  @Override
  public List<OperationId> execute(MasterContext context, List<MasterOperation> runningOperations) throws Exception {
    InteractionProtocol protocol = context.getProtocol();
    try {
      _indexMD.getShards().addAll(readShardsFromFs(_indexMD.getName(), _indexMD.getPath()));
      protocol.updateIndexMD(_indexMD);
    } catch (Exception e) {
      ExceptionUtil.rethrowInterruptedException(e);
      handleMasterDeployException(protocol, _indexMD, e);
    }
    return null;
  }

  @Override
  public ExecutionInstruction getExecutionInstruction(List<MasterOperation> runningOperations) throws Exception {
    return ExecutionInstruction.EXECUTE;
  }

  @Override
  public void nodeOperationsComplete(MasterContext context, List<OperationResult> results) throws Exception {
    // nothing todo
  }

}