/**
* Copyright (c) 2010 Yahoo! Inc. All rights reserved.
* Licensed 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. See accompanying LICENSE file.
*/
package org.apache.oozie.util.db;
import org.apache.commons.dbcp.BasicDataSource;
import org.apache.oozie.service.InstrumentationService;
import org.apache.oozie.service.Services;
import org.apache.oozie.util.Instrumentation;
public class InstrumentedBasicDataSource extends BasicDataSource {
public static final String INSTR_GROUP = "jdbc";
public static final String INSTR_NAME = "connections.active";
/**
* The created datasource instruments the active DB connections.
*/
public InstrumentedBasicDataSource() {
InstrumentationService instrumentationService = Services.get().get(InstrumentationService.class);
if (instrumentationService != null) {
Instrumentation instr = instrumentationService.get();
instr.addSampler(INSTR_GROUP, INSTR_NAME, 60, 1, new Instrumentation.Variable<Long>() {
public Long getValue() {
return (long) getNumActive();
}
});
}
}
}