| /* |
| * 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.asterix.bad.lang.statement; |
| |
| import java.util.logging.Level; |
| import java.util.logging.Logger; |
| |
| import org.apache.asterix.algebra.extension.ExtensionStatement; |
| import org.apache.asterix.app.translator.QueryTranslator; |
| import org.apache.asterix.bad.lang.BADLangExtension; |
| import org.apache.asterix.bad.metadata.Broker; |
| import org.apache.asterix.common.exceptions.CompilationException; |
| import org.apache.asterix.common.metadata.DataverseName; |
| import org.apache.asterix.lang.common.struct.Identifier; |
| import org.apache.asterix.lang.common.visitor.base.ILangVisitor; |
| import org.apache.asterix.metadata.MetadataManager; |
| import org.apache.asterix.metadata.MetadataTransactionContext; |
| import org.apache.asterix.metadata.declared.MetadataProvider; |
| import org.apache.asterix.translator.IRequestParameters; |
| import org.apache.asterix.translator.IStatementExecutor; |
| import org.apache.hyracks.algebricks.common.exceptions.AlgebricksException; |
| import org.apache.hyracks.api.client.IHyracksClientConnection; |
| import org.apache.hyracks.api.exceptions.HyracksDataException; |
| |
| public class CreateBrokerStatement extends ExtensionStatement { |
| |
| private static final Logger LOGGER = Logger.getLogger(CreateBrokerStatement.class.getName()); |
| private final DataverseName dataverseName; |
| private final Identifier brokerName; |
| private String endPointName; |
| |
| public CreateBrokerStatement(DataverseName dataverseName, Identifier brokerName, String endPointName) { |
| this.brokerName = brokerName; |
| this.dataverseName = dataverseName; |
| this.endPointName = endPointName; |
| } |
| |
| public String getEndPointName() { |
| return endPointName; |
| } |
| |
| public DataverseName getDataverseName() { |
| return dataverseName; |
| } |
| |
| public Identifier getBrokerName() { |
| return brokerName; |
| } |
| |
| @Override |
| public byte getCategory() { |
| return Category.DDL; |
| } |
| |
| @Override |
| public <R, T> R accept(ILangVisitor<R, T> visitor, T arg) throws CompilationException { |
| return null; |
| } |
| |
| @Override |
| public void handle(IHyracksClientConnection hcc, IStatementExecutor statementExecutor, |
| IRequestParameters requestParameters, MetadataProvider metadataProvider, int resultSetId) |
| throws HyracksDataException, AlgebricksException { |
| DataverseName dataverse = statementExecutor.getActiveDataverseName(dataverseName); |
| MetadataTransactionContext mdTxnCtx = null; |
| try { |
| mdTxnCtx = MetadataManager.INSTANCE.beginTransaction(); |
| metadataProvider.setMetadataTxnContext(mdTxnCtx); |
| Broker broker = BADLangExtension.getBroker(mdTxnCtx, dataverse, brokerName.getValue()); |
| if (broker != null) { |
| throw new AlgebricksException("A broker with this name " + brokerName + " already exists."); |
| } |
| broker = new Broker(dataverse, brokerName.getValue(), endPointName); |
| MetadataManager.INSTANCE.addEntity(mdTxnCtx, broker); |
| MetadataManager.INSTANCE.commitTransaction(mdTxnCtx); |
| } catch (Exception e) { |
| if (mdTxnCtx != null) { |
| QueryTranslator.abort(e, e, mdTxnCtx); |
| } |
| LOGGER.log(Level.WARNING, "Failed creating a broker", e); |
| throw HyracksDataException.create(e); |
| } finally { |
| metadataProvider.getLocks().unlock(); |
| } |
| } |
| } |