| /** |
| * 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.sqoop.accumulo; |
| |
| import java.io.Closeable; |
| import java.io.IOException; |
| import java.util.Map; |
| import java.util.concurrent.TimeUnit; |
| |
| import org.apache.accumulo.core.client.AccumuloException; |
| import org.apache.accumulo.core.client.AccumuloSecurityException; |
| import org.apache.accumulo.core.client.BatchWriter; |
| import org.apache.accumulo.core.client.BatchWriterConfig; |
| import org.apache.accumulo.core.client.Connector; |
| import org.apache.accumulo.core.client.Instance; |
| import org.apache.accumulo.core.client.MutationsRejectedException; |
| import org.apache.accumulo.core.client.TableNotFoundException; |
| import org.apache.accumulo.core.client.ZooKeeperInstance; |
| import org.apache.accumulo.core.client.security.tokens.PasswordToken; |
| import org.apache.accumulo.core.data.Mutation; |
| import org.apache.hadoop.conf.Configurable; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.util.ReflectionUtils; |
| |
| import org.apache.sqoop.lib.FieldMapProcessor; |
| import org.apache.sqoop.lib.FieldMappable; |
| import org.apache.sqoop.lib.ProcessingException; |
| |
| /** |
| * SqoopRecordProcessor that performs an Accumulo mutation operation |
| * that contains all the fields of the record. |
| */ |
| public class AccumuloMutationProcessor implements Closeable, Configurable, |
| FieldMapProcessor { |
| |
| private Configuration conf; |
| |
| // An object that can transform a map of fieldName->object |
| // into a Mutation. |
| private MutationTransformer mutationTransformer; |
| |
| private String tableName; |
| private BatchWriter table; |
| |
| public AccumuloMutationProcessor() { |
| } |
| |
| @Override |
| @SuppressWarnings("unchecked") |
| public void setConf(Configuration config) { |
| this.conf = config; |
| |
| // Get the implementation of MutationTransformer to use. |
| // By default, we call toString() on every non-null field. |
| Class<? extends MutationTransformer> xformerClass = |
| (Class<? extends MutationTransformer>) |
| this.conf.getClass(AccumuloConstants.TRANSFORMER_CLASS_KEY, |
| ToStringMutationTransformer.class); |
| this.mutationTransformer = (MutationTransformer) |
| ReflectionUtils.newInstance(xformerClass, this.conf); |
| if (null == mutationTransformer) { |
| throw new RuntimeException("Could not instantiate MutationTransformer."); |
| } |
| |
| String colFam = conf.get(AccumuloConstants.COL_FAMILY_KEY, null); |
| if (null == colFam) { |
| throw new RuntimeException("Accumulo column family not set."); |
| } |
| this.mutationTransformer.setColumnFamily(colFam); |
| |
| String rowKey = conf.get(AccumuloConstants.ROW_KEY_COLUMN_KEY, null); |
| if (null == rowKey) { |
| throw new RuntimeException("Row key column not set."); |
| } |
| this.mutationTransformer.setRowKeyColumn(rowKey); |
| |
| String vis = conf.get(AccumuloConstants.VISIBILITY_KEY, null); |
| this.mutationTransformer.setVisibility(vis); |
| |
| this.tableName = conf.get(AccumuloConstants.TABLE_NAME_KEY, null); |
| String zookeeper = conf.get(AccumuloConstants.ZOOKEEPERS); |
| String instance = conf.get(AccumuloConstants.ACCUMULO_INSTANCE); |
| |
| Instance inst = new ZooKeeperInstance(instance, zookeeper); |
| String username = conf.get(AccumuloConstants.ACCUMULO_USER_NAME); |
| String pw = conf.get(AccumuloConstants.ACCUMULO_PASSWORD); |
| if (null == pw) { |
| pw = ""; |
| } |
| byte[] password = pw.getBytes(); |
| |
| BatchWriterConfig bwc = new BatchWriterConfig(); |
| |
| long bs = conf.getLong(AccumuloConstants.BATCH_SIZE, |
| AccumuloConstants.DEFAULT_BATCH_SIZE); |
| bwc.setMaxMemory(bs); |
| |
| long la = conf.getLong(AccumuloConstants.MAX_LATENCY, |
| AccumuloConstants.DEFAULT_LATENCY); |
| bwc.setMaxLatency(la, TimeUnit.MILLISECONDS); |
| |
| try { |
| Connector conn = inst.getConnector(username, new PasswordToken(password)); |
| |
| this.table = conn.createBatchWriter(tableName, bwc); |
| } catch (AccumuloException ex) { |
| throw new RuntimeException("Error accessing Accumulo", ex); |
| } catch (AccumuloSecurityException aex){ |
| throw new RuntimeException("Security exception accessing Accumulo", aex); |
| } catch(TableNotFoundException tex){ |
| throw new RuntimeException("Accumulo table " + tableName |
| + " not found", tex); |
| } |
| } |
| |
| @Override |
| public Configuration getConf() { |
| return this.conf; |
| } |
| |
| @Override |
| /** |
| * Processes a record by extracting its field map and converting |
| * it into a list of Mutations into Accumulo. |
| */ |
| public void accept(FieldMappable record) |
| throws IOException, ProcessingException { |
| Map<String, Object> fields = record.getFieldMap(); |
| |
| Iterable<Mutation> putList = mutationTransformer.getMutations(fields); |
| if (null != putList) { |
| for (Mutation m : putList) { |
| try { |
| this.table.addMutation(m); |
| } catch (MutationsRejectedException ex) { |
| throw new IOException("Mutation rejected" , ex); |
| } |
| } |
| } |
| } |
| |
| @Override |
| /** |
| * Closes the Accumulo table and commits all pending operations. |
| */ |
| public void close() throws IOException { |
| try { |
| this.table.close(); |
| } catch (MutationsRejectedException ex) { |
| throw new IOException("Mutations rejected", ex); |
| } |
| } |
| } |