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BigQueryBulkDatabaseWriter.java
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/
BigQueryBulkDatabaseWriter.java
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package org.jumpmind.symmetric.io;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.OutputStream;
import java.nio.channels.Channels;
import java.sql.SQLException;
import java.util.List;
import org.jumpmind.db.model.Table;
import org.jumpmind.db.platform.IDatabasePlatform;
import org.jumpmind.symmetric.io.data.writer.DatabaseWriterSettings;
import org.jumpmind.symmetric.io.data.writer.IDatabaseWriterErrorHandler;
import org.jumpmind.symmetric.io.data.writer.IDatabaseWriterFilter;
import org.jumpmind.symmetric.io.stage.IStagingManager;
import org.jumpmind.symmetric.service.IParameterService;
import com.google.cloud.bigquery.BigQuery;
import com.google.cloud.bigquery.FormatOptions;
import com.google.cloud.bigquery.Job;
import com.google.cloud.bigquery.JobId;
import com.google.cloud.bigquery.JobStatistics.LoadStatistics;
import com.google.cloud.bigquery.TableDataWriteChannel;
import com.google.cloud.bigquery.TableId;
import com.google.cloud.bigquery.WriteChannelConfiguration;
import com.google.common.io.Files;
public class BigQueryBulkDatabaseWriter extends CloudBulkDatabaseWriter {
BigQuery bigquery;
public BigQueryBulkDatabaseWriter(IDatabasePlatform symmetricPlatform, IDatabasePlatform targetPlatform,
String tablePrefix, IStagingManager stagingManager, List<IDatabaseWriterFilter> filters,
List<IDatabaseWriterErrorHandler> errorHandlers, IParameterService parameterService, DatabaseWriterSettings writerSettings,
BigQuery bq) throws FileNotFoundException, IOException {
super(symmetricPlatform, targetPlatform, tablePrefix, stagingManager, filters, errorHandlers, parameterService, writerSettings);
fieldTerminator = ",";
bigquery = bq;
}
@Override
public void loadToCloudDatabase() throws SQLException {
try {
File csvPath = this.stagedInputFile.getFile();
TableId tableId = TableId.of(this.targetTable.getSchema(), this.targetTable.getName());
WriteChannelConfiguration writeChannelConfiguration =
WriteChannelConfiguration.newBuilder(tableId).setFormatOptions(FormatOptions.csv()).setAutodetect(false).setDestinationTable(tableId).build();
// The location must be specified; other fields can be auto-detected.
JobId jobId = JobId.newBuilder()
.setLocation(bigquery.getOptions().getLocation())
.setProject(bigquery.getOptions().getProjectId()).build();
TableDataWriteChannel writer = bigquery.writer(jobId, writeChannelConfiguration);
// Write data to writer
OutputStream stream = Channels.newOutputStream(writer);
Files.copy(csvPath, stream);
stream.close();
// Get load job
Job job = writer.getJob();
job = job.waitFor();
LoadStatistics stats = job.getStatistics();
} catch (Exception ex) {
throw getPlatform().getSqlTemplate().translate(ex);
}
}
@Override
protected Table lookupTableAtTarget(Table sourceTable) {
return sourceTable;
}
@Override
public void copyToCloudStorage() throws SQLException {
}
@Override
public void cleanUpCloudStorage() throws SQLException {
}
}