/*
*
* 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.geode.tools.pulse.internal.service;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.ArrayNode;
import com.fasterxml.jackson.databind.node.ObjectNode;
import org.apache.geode.tools.pulse.internal.data.Cluster;
import org.apache.geode.tools.pulse.internal.data.Repository;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Service;
import javax.servlet.http.HttpServletRequest;
/**
* Class ClusterGCPausesService
*
* This class contains implementations of getting Cluster's GC Pauses (JVM Pauses) Details and its
* trend over the time.
*
* @since GemFire version 7.5
*/
@Component
@Service("ClusterJVMPauses")
@Scope("singleton")
public class ClusterGCPausesService implements PulseService {
private final ObjectMapper mapper = new ObjectMapper();
public ObjectNode execute(final HttpServletRequest request) throws Exception {
// get cluster object
Cluster cluster = Repository.get().getCluster();
// json object to be sent as response
ObjectNode responseJSON = mapper.createObjectNode();
// cluster's GC Pauses trend added to json response object
ArrayNode pauses = mapper.createArrayNode();
for (Object obj : cluster.getStatisticTrend(Cluster.CLUSTER_STAT_GARBAGE_COLLECTION)) {
if (obj instanceof Number) {
pauses.add(((Number) obj).longValue());
}
}
responseJSON.put("currentGCPauses", cluster.getGarbageCollectionCount());
responseJSON.put("gCPausesTrend", pauses);
// Send json response
return responseJSON;
}
}