OptimizerStatsRecorder.java
/*
* 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.optimizations.OptimizerStats;
import com.facebook.presto.sql.planner.optimizations.PlanOptimizer;
import org.weakref.jmx.MBeanExporter;
import org.weakref.jmx.ObjectNames;
import java.util.HashMap;
import java.util.Map;
import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.base.Verify.verify;
import static java.lang.String.format;
import static java.util.Objects.requireNonNull;
public class OptimizerStatsRecorder
{
private final Map<Class<?>, OptimizerStats> stats = new HashMap<>();
public void register(PlanOptimizer optimizer)
{
requireNonNull(optimizer, "optimizer is null");
checkArgument(!optimizer.getClass().isAnonymousClass());
stats.put(optimizer.getClass(), new OptimizerStats());
}
public void record(PlanOptimizer optimizer, long nanos)
{
requireNonNull(optimizer, "optimizer is null");
OptimizerStats optimizerStats = requireNonNull(stats.get(optimizer.getClass()), "optimizer is not registered");
optimizerStats.record(nanos);
}
public void recordFailure(PlanOptimizer optimizer)
{
requireNonNull(optimizer, "optimizer is null");
OptimizerStats optimizerStats = requireNonNull(stats.get(optimizer.getClass()), "optimizer is not registered");
optimizerStats.recordFailure();
}
public void export(MBeanExporter exporter)
{
for (Map.Entry<Class<?>, OptimizerStats> entry : stats.entrySet()) {
verify(!entry.getKey().getSimpleName().isEmpty());
try {
exporter.export(getName(entry.getKey()), entry.getValue());
}
catch (RuntimeException e) {
throw new RuntimeException(format("Failed to export MBean with name '%s'", getName(entry.getKey())), e);
}
}
}
public void unexport(MBeanExporter exporter)
{
for (Class<?> rule : stats.keySet()) {
exporter.unexport(getName(rule));
}
}
private String getName(Class<?> key)
{
return ObjectNames.builder(PlanOptimizer.class)
.withProperty("optimizer", key.getSimpleName())
.build();
}
}