| /* |
| * 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.rya.accumulo.utils; |
| |
| import static java.util.Objects.requireNonNull; |
| |
| import org.apache.accumulo.core.client.AccumuloException; |
| import org.apache.accumulo.core.client.AccumuloSecurityException; |
| import org.apache.accumulo.core.client.Connector; |
| import org.apache.accumulo.core.client.Instance; |
| import org.apache.accumulo.core.client.ZooKeeperInstance; |
| import org.apache.accumulo.core.client.mock.MockInstance; |
| import org.apache.accumulo.core.client.security.tokens.PasswordToken; |
| import org.apache.rya.accumulo.AccumuloRdfConfiguration; |
| |
| import edu.umd.cs.findbugs.annotations.DefaultAnnotation; |
| import edu.umd.cs.findbugs.annotations.NonNull; |
| |
| /** |
| * A utility class that helps create instances of {@link Connector}. |
| */ |
| @DefaultAnnotation(NonNull.class) |
| public class ConnectorFactory { |
| |
| /** |
| * Private constructor to prevent instantiation. |
| */ |
| private ConnectorFactory() { } |
| |
| /** |
| * Create a {@link Connector} that connects to an Accumulo instance. The {@link AccumuloRdfConfiguration#USE_MOCK_INSTANCE} |
| * flag must be set if the configuration information needs to connect to a mock instance of Accumulo. If this is |
| * the case, then the Zookeepers information should not be set. |
| * |
| * @param config - The configuration that will be used to initialize the connector. (not null) |
| * @return The {@link Connector} that was created by {@code config}. |
| * @throws AccumuloException The connector couldn't be created because of an Accumulo problem. |
| * @throws AccumuloSecurityException The connector couldn't be created because of an Accumulo security violation. |
| */ |
| public static Connector connect(AccumuloRdfConfiguration config) throws AccumuloException, AccumuloSecurityException { |
| requireNonNull(config); |
| |
| // Wrap the configuration as the Accumulo configuration so that we may have access |
| // to Accumulo specific configuration values. |
| final AccumuloRdfConfiguration accConf = new AccumuloRdfConfiguration(config); |
| |
| // Create the Mock or Zookeeper backed Instance depending on the configuration. |
| final Instance instance; |
| if(accConf.useMockInstance()) { |
| instance = new MockInstance(accConf.getInstanceName()); |
| } else { |
| instance = new ZooKeeperInstance(accConf.getInstanceName(), accConf.getZookeepers()); |
| } |
| |
| // Return a connector using the configured username and password. |
| return instance.getConnector(accConf.getUsername(), new PasswordToken(accConf.getPassword())); |
| } |
| } |