/*
* Copyright 1999-2015 dangdang.com.
* <p>
* 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.
* </p>
*/
package com.dangdang.ddframe.job.lite.internal.sharding;
import com.dangdang.ddframe.job.lite.internal.election.LeaderNode;
import com.dangdang.ddframe.job.lite.internal.storage.JobNodePath;
/**
* 分片节点路径.
*
* @author zhangliang
*/
public final class ShardingNode {
/**
* 执行状态根节点.
*/
public static final String ROOT = "sharding";
static final String INSTANCE_APPENDIX = "instance";
public static final String INSTANCE = ROOT + "/%s/" + INSTANCE_APPENDIX;
static final String RUNNING_APPENDIX = "running";
static final String RUNNING = ROOT + "/%s/" + RUNNING_APPENDIX;
static final String MISFIRE = ROOT + "/%s/misfire";
static final String DISABLED = ROOT + "/%s/disabled";
static final String LEADER_ROOT = LeaderNode.ROOT + "/" + ROOT;
static final String NECESSARY = LEADER_ROOT + "/necessary";
static final String PROCESSING = LEADER_ROOT + "/processing";
private final JobNodePath jobNodePath;
public ShardingNode(final String jobName) {
jobNodePath = new JobNodePath(jobName);
}
public static String getInstanceNode(final int item) {
return String.format(INSTANCE, item);
}
/**
* 获取作业运行状态节点路径.
*
* @param item 作业项
* @return 作业运行状态节点路径
*/
public static String getRunningNode(final int item) {
return String.format(RUNNING, item);
}
static String getMisfireNode(final int item) {
return String.format(MISFIRE, item);
}
static String getDisabledNode(final int item) {
return String.format(DISABLED, item);
}
/**
* 根据运行中的分片路径获取分片项.
*
* @param path 运行中的分片路径
* @return 分片项, 不是运行中的分片路径获则返回null
*/
public Integer getItemByRunningItemPath(final String path) {
if (!isRunningItemPath(path)) {
return null;
}
return Integer.parseInt(path.substring(jobNodePath.getFullPath(ROOT).length() + 1, path.lastIndexOf(RUNNING_APPENDIX) - 1));
}
private boolean isRunningItemPath(final String path) {
return path.startsWith(jobNodePath.getFullPath(ROOT)) && path.endsWith(RUNNING_APPENDIX);
}
}