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package parallelai.spyglass.hbase;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.hbase.HConstants;
import org.apache.hadoop.hbase.util.Bytes;
import org.apache.hadoop.mapred.InputSplit;
import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import java.io.Serializable;
import java.util.TreeSet;
/**
* Created with IntelliJ IDEA.
* User: chand_000
* Date: 29/08/13
* Time: 16:18
* To change this template use File | Settings | File Templates.
*/
public abstract class HBaseTableSplitBase implements InputSplit,
Comparable<HBaseTableSplitBase>, Serializable {
private final Log LOG = LogFactory.getLog(HBaseTableSplitBase.class);
protected byte[] m_tableName = null;
protected byte[] m_startRow = null;
protected byte[] m_endRow = null;
protected String m_regionLocation = null;
protected String m_regionName = null;
protected TreeSet<String> m_keyList = null;
protected HBaseConstants.SourceMode m_sourceMode = HBaseConstants.SourceMode.EMPTY;
protected boolean m_endRowInclusive = true;
protected int m_versions = 1;
protected boolean m_useSalt = false;
/** @return table name */
public byte[] getTableName() {
return this.m_tableName;
}
/** @return starting row key */
public byte[] getStartRow() {
return this.m_startRow;
}
/** @return end row key */
public byte[] getEndRow() {
return this.m_endRow;
}
public boolean getEndRowInclusive() {
return m_endRowInclusive;
}
public void setEndRowInclusive(boolean isInclusive) {
m_endRowInclusive = isInclusive;
}
/** @return list of keys to get */
public TreeSet<String> getKeyList() {
return m_keyList;
}
public int getVersions() {
return m_versions;
}
/** @return get the source mode */
public HBaseConstants.SourceMode getSourceMode() {
return m_sourceMode;
}
public boolean getUseSalt() {
return m_useSalt;
}
/** @return the region's hostname */
public String getRegionLocation() {
LOG.debug("REGION GETTER : " + m_regionLocation);
return this.m_regionLocation;
}
public String[] getLocations() {
LOG.debug("REGION ARRAY : " + m_regionLocation);
return new String[] { this.m_regionLocation };
}
public String getRegionName() {
return this.m_regionName;
}
public void copy(HBaseTableSplitBase that) {
this.m_endRow = that.m_endRow;
this.m_endRowInclusive = that.m_endRowInclusive;
this.m_keyList = that.m_keyList;
this.m_sourceMode = that.m_sourceMode;
this.m_startRow = that.m_startRow;
this.m_tableName = that.m_tableName;
this.m_useSalt = that.m_useSalt;
this.m_versions = that.m_versions;
this.m_regionLocation = that.m_regionLocation;
this.m_regionName = that.m_regionName;
}
@Override
public void readFields(DataInput in) throws IOException {
LOG.debug("READ ME : " + in.toString());
this.m_tableName = Bytes.readByteArray(in);
this.m_regionLocation = Bytes.toString(Bytes.readByteArray(in));
this.m_regionName = Bytes.toString(Bytes.readByteArray(in));
this.m_sourceMode = HBaseConstants.SourceMode.valueOf(Bytes.toString(Bytes
.readByteArray(in)));
this.m_useSalt = Bytes.toBoolean(Bytes.readByteArray(in));
switch (this.m_sourceMode) {
case SCAN_RANGE:
this.m_startRow = Bytes.readByteArray(in);
this.m_endRow = Bytes.readByteArray(in);
this.m_endRowInclusive = Bytes.toBoolean(Bytes.readByteArray(in));
break;
case GET_LIST:
this.m_versions = Bytes.toInt(Bytes.readByteArray(in));
this.m_keyList = new TreeSet<String>();
int m = Bytes.toInt(Bytes.readByteArray(in));
for (int i = 0; i < m; i++) {
this.m_keyList.add(Bytes.toString(Bytes.readByteArray(in)));
}
break;
}
LOG.debug("READ and CREATED : " + this);
}
@Override
public void write(DataOutput out) throws IOException {
LOG.debug("WRITE : " + this);
Bytes.writeByteArray(out, this.m_tableName);
Bytes.writeByteArray(out, Bytes.toBytes(this.m_regionLocation));
Bytes.writeByteArray(out, Bytes.toBytes(this.m_regionName));
Bytes.writeByteArray(out, Bytes.toBytes(this.m_sourceMode.name()));
Bytes.writeByteArray(out, Bytes.toBytes(this.m_useSalt));
switch (this.m_sourceMode) {
case SCAN_RANGE:
Bytes.writeByteArray(out, this.m_startRow);
Bytes.writeByteArray(out, this.m_endRow);
Bytes.writeByteArray(out, Bytes.toBytes(this.m_endRowInclusive));
break;
case GET_LIST:
Bytes.writeByteArray(out, Bytes.toBytes(m_versions));
Bytes.writeByteArray(out, Bytes.toBytes(this.m_keyList.size()));
for (String k : this.m_keyList) {
Bytes.writeByteArray(out, Bytes.toBytes(k));
}
break;
}
LOG.debug("WROTE : " + out.toString());
}
}
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