/*
* 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.
*/
package com.facebook.presto.sql.planner;
import com.facebook.presto.sql.planner.iterative.IterativeOptimizer;
import com.facebook.presto.sql.planner.iterative.Rule;
import com.facebook.presto.sql.planner.iterative.RuleStats;
import org.weakref.jmx.MBeanExporter;
import org.weakref.jmx.ObjectNames;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
public class StatsRecorder
{
private final Map<Class<?>, RuleStats> stats = new HashMap<>();
public void registerAll(Collection<Rule> rules)
{
for (Rule rule : rules) {
stats.put(rule.getClass(), new RuleStats());
}
}
public void record(Rule rule, long nanos, boolean match)
{
stats.get(rule.getClass()).record(nanos, match);
}
public void recordFailure(Rule rule)
{
stats.get(rule.getClass()).recordFailure();
}
void export(MBeanExporter exporter)
{
for (Map.Entry<Class<?>, RuleStats> entry : stats.entrySet()) {
String name = ObjectNames.builder(IterativeOptimizer.class)
.withProperty("rule", entry.getKey().getSimpleName())
.build();
exporter.export(name, entry.getValue());
}
}
void unexport(MBeanExporter exporter)
{
for (Class<?> rule : stats.keySet()) {
String name = ObjectNames.builder(IterativeOptimizer.class)
.withProperty("rule", rule.getSimpleName())
.build();
exporter.unexport(name);
}
}
}