org.apache.solr.core.ConfigSetProperties Maven / Gradle / Ivy
/*
* 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.core;
import java.io.InputStreamReader;
import java.lang.invoke.MethodHandles;
import java.nio.charset.StandardCharsets;
import java.util.Map;
import org.apache.commons.io.IOUtils;
import org.apache.solr.common.SolrException;
import org.apache.solr.common.SolrException.ErrorCode;
import org.apache.solr.common.util.NamedList;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import static org.apache.solr.common.util.Utils.fromJSON;
public class ConfigSetProperties {
private static final Logger log = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
public static final String DEFAULT_FILENAME = "configsetprops.json";
public static final String IMMUTABLE_CONFIGSET_ARG = "immutable";
/**
* Return the properties associated with the ConfigSet (e.g. immutable)
*
* @param loader the resource loader
* @param name the name of the config set properties file
* @return the properties in a NamedList
*/
public static NamedList readFromResourceLoader(SolrResourceLoader loader, String name) {
InputStreamReader reader;
try {
reader = new InputStreamReader(loader.openResource(name), StandardCharsets.UTF_8);
} catch (SolrResourceNotFoundException ex) {
log.debug("Did not find ConfigSet properties, assuming default properties: " + ex.getMessage());
return null;
} catch (Exception ex) {
throw new SolrException(ErrorCode.SERVER_ERROR, "Unable to load reader for ConfigSet properties: " + name, ex);
}
try {
return readFromInputStream(reader);
} finally {
IOUtils.closeQuietly(reader);
}
}
public static NamedList readFromInputStream(InputStreamReader reader) {
try {
Object object = fromJSON(reader);
if (!(object instanceof Map)) {
final String objectClass = object == null ? "null" : object.getClass().getName();
throw new SolrException(ErrorCode.SERVER_ERROR, "Invalid JSON type " + objectClass + ", expected Map");
}
return new NamedList((Map) object);
} catch (Exception ex) {
throw new SolrException(ErrorCode.SERVER_ERROR, "Unable to load ConfigSet properties", ex);
} finally {
IOUtils.closeQuietly(reader);
}
}
}