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/**
* 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.mapreduce.postgresql;
import com.cloudera.sqoop.SqoopOptions;
import com.cloudera.sqoop.config.ConfigurationHelper;
import com.cloudera.sqoop.manager.ExportJobContext;
import java.io.IOException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.io.NullWritable;
import org.apache.hadoop.mapreduce.InputFormat;
import org.apache.hadoop.mapreduce.Job;
import org.apache.hadoop.mapreduce.Mapper;
import org.apache.hadoop.mapreduce.OutputFormat;
import org.apache.sqoop.lib.DelimiterSet;
import org.apache.sqoop.mapreduce.JdbcExportJob;
/**
* Run an export using PostgreSQL JDBC Copy API.
*/
public class PostgreSQLCopyExportJob extends JdbcExportJob {
public static final Log LOG =
LogFactory.getLog(PostgreSQLCopyExportJob.class.getName());
public PostgreSQLCopyExportJob(final ExportJobContext context) {
super(context);
}
public PostgreSQLCopyExportJob(final ExportJobContext ctxt,
final Class extends Mapper> mapperClass,
final Class extends InputFormat> inputFormatClass,
final Class extends OutputFormat> outputFormatClass) {
super(ctxt, mapperClass, inputFormatClass, outputFormatClass);
}
@Override
protected Class extends Mapper> getMapperClass() {
return PostgreSQLCopyExportMapper.class;
}
@Override
protected void configureMapper(Job job, String tableName,
String tableClassName) throws ClassNotFoundException, IOException {
if (isHCatJob) {
throw new IOException("Sqoop-HCatalog Integration is not supported.");
}
switch (getInputFileType()) {
case AVRO_DATA_FILE:
throw new IOException("Avro data file is not supported.");
case SEQUENCE_FILE:
case UNKNOWN:
default:
job.setMapperClass(getMapperClass());
}
// Concurrent writes of the same records would be problematic.
ConfigurationHelper.setJobMapSpeculativeExecution(job, false);
job.setMapOutputKeyClass(NullWritable.class);
job.setMapOutputValueClass(NullWritable.class);
}
protected void propagateOptionsToJob(Job job) {
super.propagateOptionsToJob(job);
SqoopOptions opts = context.getOptions();
Configuration conf = job.getConfiguration();
if (opts.getNullStringValue() != null) {
conf.set("postgresql.null.string", opts.getNullStringValue());
}
setDelimiter("postgresql.input.field.delim",
opts.getInputFieldDelim(), conf);
setDelimiter("postgresql.input.record.delim",
opts.getInputRecordDelim(), conf);
setDelimiter("postgresql.input.enclosedby",
opts.getInputEnclosedBy(), conf);
setDelimiter("postgresql.input.escapedby",
opts.getInputEscapedBy(), conf);
conf.setBoolean("postgresql.input.encloserequired",
opts.isInputEncloseRequired());
}
private void setDelimiter(String prop, char val, Configuration conf) {
switch (val) {
case DelimiterSet.NULL_CHAR:
break;
case '\t':
default:
conf.set(prop, String.valueOf(val));
}
}
}
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