/* This file is part of VoltDB.
* Copyright (C) 2008-2014 VoltDB Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with VoltDB. If not, see <http://www.gnu.org/licenses/>.
*/
package org.voltdb;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import org.voltdb.VoltTable.ColumnInfo;
import org.voltcore.utils.Pair;
public class IOStats extends StatsSource {
private Map<Long, Pair<String, long[]>> m_ioStats =
new HashMap<Long, Pair<String,long[]>>();
/**
* A dummy iterator that wraps an Iterator<Long> and provides the
* Iterator<Object>
*/
private class DummyIterator implements Iterator<Object> {
private final Iterator<Long> i;
private DummyIterator(Iterator<Long> i) {
this.i = i;
}
@Override
public boolean hasNext() {
return i.hasNext();
}
@Override
public Object next() {
return i.next();
}
@Override
public void remove() {
i.remove();
}
}
public IOStats() {
super(false);
}
@Override
protected void populateColumnSchema(ArrayList<ColumnInfo> columns) {
super.populateColumnSchema(columns);
columns.add(new ColumnInfo("CONNECTION_ID", VoltType.BIGINT));
columns.add(new ColumnInfo("CONNECTION_HOSTNAME", VoltType.STRING));
columns.add(new ColumnInfo("BYTES_READ", VoltType.BIGINT));
columns.add(new ColumnInfo("MESSAGES_READ", VoltType.BIGINT));
columns.add(new ColumnInfo("BYTES_WRITTEN", VoltType.BIGINT));
columns.add(new ColumnInfo("MESSAGES_WRITTEN", VoltType.BIGINT));
}
@Override
protected void updateStatsRow(Object rowKey, Object[] rowValues) {
final Pair<String, long[]> info = m_ioStats.get(rowKey);
final long[] counters = info.getSecond();
rowValues[columnNameToIndex.get("CONNECTION_ID")] = rowKey;
rowValues[columnNameToIndex.get("CONNECTION_HOSTNAME")] = info.getFirst();
rowValues[columnNameToIndex.get("BYTES_READ")] = counters[0];
rowValues[columnNameToIndex.get("MESSAGES_READ")] = counters[1];
rowValues[columnNameToIndex.get("BYTES_WRITTEN")] = counters[2];
rowValues[columnNameToIndex.get("MESSAGES_WRITTEN")] = counters[3];
super.updateStatsRow(rowKey, rowValues);
}
@Override
protected Iterator<Object> getStatsRowKeyIterator(boolean interval) {
try {
m_ioStats = VoltDB.instance().getHostMessenger().getIOStats(interval);
} catch (Exception e) {
throw new RuntimeException(e);
}
return new DummyIterator(m_ioStats.keySet().iterator());
}
}