dubbo MappingCacheManager 源码
dubbo MappingCacheManager 代码
文件路径：/dubbo-metadata/dubbo-metadata-api/src/main/java/org/apache/dubbo/metadata/MappingCacheManager.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.metadata;
import org.apache.dubbo.common.utils.JsonUtils;
import org.apache.dubbo.common.utils.StringUtils;
import org.apache.dubbo.rpc.model.ScopeModel;
import java.util.HashSet;
import java.util.Set;
import java.util.concurrent.ScheduledExecutorService;
/**
* TODO, Using randomly accessible file-based cache can be another choice if memory consumption turns to be an issue.
*/
public class MappingCacheManager extends AbstractCacheManager<Set<String>> {
private static final String DEFAULT_FILE_NAME = ".mapping";
private static final int DEFAULT_ENTRY_SIZE = 10000;
public static MappingCacheManager getInstance(ScopeModel scopeModel) {
return scopeModel.getBeanFactory().getOrRegisterBean(MappingCacheManager.class);
}
public MappingCacheManager(boolean enableFileCache, String name, ScheduledExecutorService executorService) {
String filePath = System.getProperty("dubbo.mapping.cache.filePath");
String fileName = System.getProperty("dubbo.mapping.cache.fileName");
if (StringUtils.isEmpty(fileName)) {
fileName = DEFAULT_FILE_NAME;
}
if (StringUtils.isNotEmpty(name)) {
fileName = fileName + "." + name;
}
String rawEntrySize = System.getProperty("dubbo.mapping.cache.entrySize");
int entrySize = StringUtils.parseInteger(rawEntrySize);
entrySize = (entrySize == 0 ? DEFAULT_ENTRY_SIZE : entrySize);
String rawMaxFileSize = System.getProperty("dubbo.mapping.cache.maxFileSize");
long maxFileSize = StringUtils.parseLong(rawMaxFileSize);
init(enableFileCache, filePath, fileName, entrySize, maxFileSize, 50, executorService);
}
@Override
protected Set<String> toValueType(String value) {
return new HashSet<>(JsonUtils.getJson().toJavaList(value, String.class));
}
@Override
protected String getName() {
return "mapping";
}
}
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