/
MetricsMaster.java
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/
MetricsMaster.java
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/*
* The Alluxio Open Foundation licenses this work under the Apache License, version 2.0
* (the "License"). You may not use this work except in compliance with the License, which is
* available at www.apache.org/licenses/LICENSE-2.0
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
* either express or implied, as more fully set forth in the License.
*
* See the NOTICE file distributed with this work for information regarding copyright ownership.
*/
package alluxio.master.metrics;
import alluxio.grpc.MetricValue;
import alluxio.master.Master;
import alluxio.metrics.Metric;
import java.util.List;
import java.util.Map;
/**
* Interface of the metrics master that aggregates the cluster-level metrics from workers and
* clients.
*/
public interface MetricsMaster extends Master {
/**
* Clear metrics in the current master.
*/
void clearMetrics();
/**
* Handles the client's heartbeat request for metrics collection.
*
* @param clientId the client id
* @param hostname the client hostname
* @param metrics client-side metrics
*/
void clientHeartbeat(String clientId, String hostname, List<Metric> metrics);
/**
* @return the master service handler
*/
MetricsMasterClientServiceHandler getMasterServiceHandler();
/**
* @return all metrics stored in the current master in a map
* from metric name to corresponding metric value.
*/
Map<String, MetricValue> getMetrics();
/**
* Handles the worker heartbeat and puts the metrics from an instance with a hostname. If all the
* old metrics associated with this instance will be removed and then replaced by the latest.
*
* @param hostname the hostname of the instance
* @param metrics the new worker metrics
*/
void workerHeartbeat(String hostname, List<Metric> metrics);
}