/*
* Copyright 2016 NAVER Corp.
*
* 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.navercorp.pinpoint.web.vo;
import com.fasterxml.jackson.databind.annotation.JsonSerialize;
import com.navercorp.pinpoint.web.view.AgentActiveThreadDumpListSerializer;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
/**
* @author Taejin Koo
*/
@JsonSerialize(using = AgentActiveThreadDumpListSerializer.class)
public class AgentActiveThreadDumpList {
public static final AgentActiveThreadDumpList EMPTY_INSTANCE = new AgentActiveThreadDumpList(0);
private final List<AgentActiveThreadDump> agentActiveThreadDumpRepository;
public AgentActiveThreadDumpList() {
this(4);
}
public AgentActiveThreadDumpList(int initialCapacity) {
agentActiveThreadDumpRepository = new ArrayList<>(initialCapacity);
}
public void add(AgentActiveThreadDump agentActiveThreadStatus) {
agentActiveThreadDumpRepository.add(agentActiveThreadStatus);
}
public List<AgentActiveThreadDump> getAgentActiveThreadDumpRepository() {
return Collections.unmodifiableList(agentActiveThreadDumpRepository);
}
public List<AgentActiveThreadDump> getSortOldestAgentActiveThreadDumpRepository() {
ArrayList<AgentActiveThreadDump> copied = new ArrayList<>(agentActiveThreadDumpRepository);
Collections.sort(copied, new Comparator<AgentActiveThreadDump>() {
private static final int CHANGE_TO_NEW_ELEMENT = 1;
private static final int KEEP_OLD_ELEMENT = -1;
@Override
public int compare(AgentActiveThreadDump oldElement, AgentActiveThreadDump newElement) {
long diff = oldElement.getStartTime() - newElement.getStartTime();
if (diff <= 0) {
return KEEP_OLD_ELEMENT;
}
return CHANGE_TO_NEW_ELEMENT;
}
});
return Collections.unmodifiableList(copied);
}
}