org.apache.flink.runtime.io.network.metrics.InputBufferPoolUsageGauge Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.flink.runtime.io.network.metrics;
import org.apache.flink.runtime.io.network.buffer.BufferPool;
import org.apache.flink.runtime.io.network.partition.consumer.SingleInputGate;
import static org.apache.flink.util.Preconditions.checkNotNull;
/**
* Gauge metric measuring the input buffer pool usage gauge for {@link SingleInputGate}s.
*/
public class InputBufferPoolUsageGauge extends AbstractBuffersUsageGauge {
public InputBufferPoolUsageGauge(SingleInputGate[] inputGates) {
super(checkNotNull(inputGates));
}
@Override
public int calculateUsedBuffers(SingleInputGate inputGate) {
BufferPool bufferPool = inputGate.getBufferPool();
if (bufferPool != null) {
return bufferPool.bestEffortGetNumOfUsedBuffers();
}
return 0;
}
@Override
public int calculateTotalBuffers(SingleInputGate inputGate) {
BufferPool bufferPool = inputGate.getBufferPool();
if (bufferPool != null) {
return bufferPool.getNumBuffers();
}
return 0;
}
}