org.apache.pulsar.metadata.bookkeeper.HierarchicalLedgerUtils Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one
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* distributed with this work for additional information
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* 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
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* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.pulsar.metadata.bookkeeper;
import java.util.List;
import java.util.NavigableSet;
import java.util.TreeSet;
import lombok.experimental.UtilityClass;
import lombok.extern.slf4j.Slf4j;
import org.apache.bookkeeper.meta.AbstractZkLedgerManager;
@UtilityClass
@Slf4j
class HierarchicalLedgerUtils {
/**
* Get all ledger ids in the given zk path.
*
* @param ledgerNodes
* List of ledgers in the given path
* example:- {L1652, L1653, L1650}
* @param path
* The zookeeper path of the ledger ids. The path should start with {@ledgerRootPath}
* example (with ledgerRootPath = /ledgers):- /ledgers/00/0053
*/
NavigableSet ledgerListToSet(List ledgerNodes, String ledgerRootPath, String path) {
NavigableSet zkActiveLedgers = new TreeSet<>();
if (!path.startsWith(ledgerRootPath)) {
log.warn("Ledger path [{}] is not a valid path name, it should start wth {}", path, ledgerRootPath);
return zkActiveLedgers;
}
long ledgerIdPrefix = 0;
char ch;
for (int i = ledgerRootPath.length() + 1; i < path.length(); i++) {
ch = path.charAt(i);
if (ch < '0' || ch > '9') {
continue;
}
ledgerIdPrefix = ledgerIdPrefix * 10 + (ch - '0');
}
for (String ledgerNode : ledgerNodes) {
if (AbstractZkLedgerManager.isSpecialZnode(ledgerNode)) {
continue;
}
long ledgerId = ledgerIdPrefix;
for (int i = 0; i < ledgerNode.length(); i++) {
ch = ledgerNode.charAt(i);
if (ch < '0' || ch > '9') {
continue;
}
ledgerId = ledgerId * 10 + (ch - '0');
}
zkActiveLedgers.add(ledgerId);
}
return zkActiveLedgers;
}
}