/*
* 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.lifecycle.internal.reg;
import com.dangdang.ddframe.job.reg.base.CoordinatorRegistryCenter;
import com.dangdang.ddframe.job.reg.zookeeper.ZookeeperConfiguration;
import com.dangdang.ddframe.job.reg.zookeeper.ZookeeperRegistryCenter;
import com.google.common.base.Charsets;
import com.google.common.base.Optional;
import com.google.common.hash.HashCode;
import com.google.common.hash.Hasher;
import com.google.common.hash.Hashing;
import lombok.AccessLevel;
import lombok.NoArgsConstructor;
import java.util.concurrent.ConcurrentHashMap;
/**
* 注册中心工厂.
*
* @author zhangliang
*/
@NoArgsConstructor(access = AccessLevel.PRIVATE)
public final class RegistryCenterFactory {
private static final ConcurrentHashMap<HashCode, CoordinatorRegistryCenter> REG_CENTER_REGISTRY = new ConcurrentHashMap<>();
/**
* 创建注册中心.
*
* @param connectString 注册中心连接字符串
* @param namespace 注册中心命名空间
* @param digest 注册中心凭证
* @return 注册中心对象
*/
public static CoordinatorRegistryCenter createCoordinatorRegistryCenter(final String connectString, final String namespace, final Optional<String> digest) {
Hasher hasher = Hashing.md5().newHasher().putString(connectString, Charsets.UTF_8).putString(namespace, Charsets.UTF_8);
if (digest.isPresent()) {
hasher.putString(digest.get(), Charsets.UTF_8);
}
HashCode hashCode = hasher.hash();
CoordinatorRegistryCenter result = REG_CENTER_REGISTRY.get(hashCode);
if (null != result) {
return result;
}
ZookeeperConfiguration zkConfig = new ZookeeperConfiguration(connectString, namespace);
if (digest.isPresent()) {
zkConfig.setDigest(digest.get());
}
result = new ZookeeperRegistryCenter(zkConfig);
result.init();
REG_CENTER_REGISTRY.put(hashCode, result);
return result;
}
}