dubbo SimpleDataStore 源码
dubbo SimpleDataStore 代码
文件路径：/dubbo-common/src/main/java/org/apache/dubbo/common/store/support/SimpleDataStore.java
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file 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 "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.apache.dubbo.common.store.support;
import org.apache.dubbo.common.store.DataStore;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
public class SimpleDataStore implements DataStore {
// <component name or id, <data-name, data-value>>
private ConcurrentMap<String, ConcurrentMap<String, Object>> data =
new ConcurrentHashMap<String, ConcurrentMap<String, Object>>();
@Override
public Map<String, Object> get(String componentName) {
ConcurrentMap<String, Object> value = data.get(componentName);
if (value == null) {
return new HashMap<String, Object>();
}
return new HashMap<String, Object>(value);
}
@Override
public Object get(String componentName, String key) {
if (!data.containsKey(componentName)) {
return null;
}
return data.get(componentName).get(key);
}
@Override
public void put(String componentName, String key, Object value) {
Map<String, Object> componentData = data.computeIfAbsent(componentName, k -> new ConcurrentHashMap<>());
componentData.put(key, value);
}
@Override
public void remove(String componentName, String key) {
if (!data.containsKey(componentName)) {
return;
}
data.get(componentName).remove(key);
}
}
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