Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance. Project price only 1 $
You can buy this project and download/modify it how often you want.
/*
* 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.solr.search;
import javax.xml.xpath.XPathConstants;
import java.lang.invoke.MethodHandles;
import java.util.Collections;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import org.apache.solr.common.SolrException;
import org.apache.solr.common.util.StrUtils;
import org.apache.solr.common.MapSerializable;
import org.apache.solr.core.SolrConfig;
import org.apache.solr.core.SolrResourceLoader;
import org.apache.solr.util.DOMUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import static org.apache.solr.common.params.CommonParams.NAME;
/**
* Contains the knowledge of how cache config is
* stored in the solrconfig.xml file, and implements a
* factory to create caches.
*
*
*/
public class CacheConfig implements MapSerializable{
private static final Logger log = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
private String nodeName;
private Class clazz;
private Map args;
private CacheRegenerator regenerator;
private String cacheImpl;
private Object[] persistence = new Object[1];
private String regenImpl;
public CacheConfig() {}
public CacheConfig(Class clazz, Map args, CacheRegenerator regenerator) {
this.clazz = clazz;
this.args = args;
this.regenerator = regenerator;
}
public CacheRegenerator getRegenerator() {
return regenerator;
}
public void setRegenerator(CacheRegenerator regenerator) {
this.regenerator = regenerator;
}
public static Map getMultipleConfigs(SolrConfig solrConfig, String configPath) {
NodeList nodes = (NodeList) solrConfig.evaluate(configPath, XPathConstants.NODESET);
if (nodes == null || nodes.getLength() == 0) return new LinkedHashMap<>();
Map result = new HashMap<>(nodes.getLength());
for (int i = 0; i < nodes.getLength(); i++) {
CacheConfig config = getConfig(solrConfig, nodes.item(i).getNodeName(), DOMUtil.toMap(nodes.item(i).getAttributes()), configPath);
result.put(config.args.get(NAME), config);
}
return result;
}
public static CacheConfig getConfig(SolrConfig solrConfig, String xpath) {
Node node = solrConfig.getNode(xpath, false);
if(node == null || !"true".equals(DOMUtil.getAttrOrDefault(node, "enabled", "true"))) {
Map m = solrConfig.getOverlay().getEditableSubProperties(xpath);
if(m==null) return null;
List parts = StrUtils.splitSmart(xpath, '/');
return getConfig(solrConfig,parts.get(parts.size()-1) , Collections.EMPTY_MAP,xpath);
}
return getConfig(solrConfig, node.getNodeName(),DOMUtil.toMap(node.getAttributes()), xpath);
}
public static CacheConfig getConfig(SolrConfig solrConfig, String nodeName, Map attrs, String xpath) {
CacheConfig config = new CacheConfig();
config.nodeName = nodeName;
Map attrsCopy = new LinkedHashMap<>(attrs.size());
for (Map.Entry e : attrs.entrySet()) {
attrsCopy.put(e.getKey(), String.valueOf(e.getValue()));
}
attrs = attrsCopy;
config.args = attrs;
Map map = xpath == null ? null : solrConfig.getOverlay().getEditableSubProperties(xpath);
if(map != null){
HashMap mapCopy = new HashMap<>(config.args);
for (Map.Entry e : map.entrySet()) {
mapCopy.put(e.getKey(),String.valueOf(e.getValue()));
}
config.args = mapCopy;
}
String nameAttr = config.args.get(NAME); // OPTIONAL
if (nameAttr==null) {
config.args.put(NAME, config.nodeName);
}
SolrResourceLoader loader = solrConfig.getResourceLoader();
config.cacheImpl = config.args.get("class");
if (config.cacheImpl == null) config.cacheImpl = "solr.CaffeineCache";
config.regenImpl = config.args.get("regenerator");
config.clazz = loader.findClass(config.cacheImpl, SolrCache.class);
if (config.regenImpl != null) {
config.regenerator = loader.newInstance(config.regenImpl, CacheRegenerator.class);
}
return config;
}
public SolrCache newInstance() {
try {
SolrCache cache = clazz.getConstructor().newInstance();
persistence[0] = cache.init(args, persistence[0], regenerator);
return cache;
} catch (Exception e) {
SolrException.log(log,"Error instantiating cache",e);
// we can carry on without a cache... but should we?
// in some cases (like an OOM) we probably should try to continue.
return null;
}
}
@Override
public Map toMap(Map map) {
Map result = Collections.unmodifiableMap(args);
return result;
}
public String getNodeName() {
return nodeName;
}
}