org.glowroot.central.repo.AgentRollupIds Maven / Gradle / Ivy
/*
* Copyright 2017-2018 the original author or authors.
*
* 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 org.glowroot.central.repo;
import java.util.ArrayList;
import java.util.List;
import javax.annotation.Nullable;
public class AgentRollupIds {
private AgentRollupIds() {}
// includes agentRollupId itself
// agentRollupId is index 0
// its direct parent is index 1
// etc...
public static List getAgentRollupIds(String agentRollupId) {
List agentRollupIds = new ArrayList<>();
agentRollupIds.add(agentRollupId);
int separatorLen = "::".length();
int lastFoundIndex;
if (agentRollupId.endsWith("::")) {
lastFoundIndex = agentRollupId.length() - separatorLen;
} else {
lastFoundIndex = agentRollupId.length();
}
int nextFoundIndex;
// -1 because the agent rollup part must be at least 1 character
while ((nextFoundIndex =
agentRollupId.lastIndexOf("::", lastFoundIndex - separatorLen - 1)) != -1) {
if (nextFoundIndex == 0) {
break;
}
agentRollupIds.add(agentRollupId.substring(0, nextFoundIndex + separatorLen));
lastFoundIndex = nextFoundIndex;
}
return agentRollupIds;
}
static @Nullable String getParent(String agentRollupId) {
int index;
if (agentRollupId.endsWith("::")) {
index = agentRollupId.lastIndexOf("::", agentRollupId.length() - 5);
} else {
index = agentRollupId.lastIndexOf("::");
}
if (index == -1 || index == 0) {
return null;
}
return agentRollupId.substring(0, index + 2);
}
}