| /* |
| * 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.ambari.logsearch.config.api; |
| |
| import java.util.Map; |
| |
| import org.apache.ambari.logsearch.config.api.LogSearchConfig.Component; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Factory class for LogSearchConfig. |
| */ |
| public class LogSearchConfigFactory { |
| private static final Logger LOG = LoggerFactory.getLogger(LogSearchConfigFactory.class); |
| |
| /** |
| * Creates a Log Search Configuration instance that implements {@link org.apache.ambari.logsearch.config.api.LogSearchConfig}. |
| * |
| * @param component The component of the Log Search Service to create the configuration for (SERVER/LOGFEEDER). |
| * @param properties The properties of the component for which the configuration is created. If the properties contain the |
| * "logsearch.config.class" entry than the class defined there would be used instead of the default class. |
| * @param defaultClass The default configuration class to use if not specified otherwise. |
| * @return The Log Search Configuration instance. |
| * @throws Exception Throws exception if the defined class does not implement LogSearchConfig, or doesn't have an empty |
| * constructor, or throws an exception in it's init method. |
| */ |
| public static LogSearchConfig createLogSearchConfig(Component component, Map<String, String> properties, |
| Class<? extends LogSearchConfig> defaultClass) throws Exception { |
| try { |
| LogSearchConfig logSearchConfig = null; |
| String configClassName = properties.get("logsearch.config.class"); |
| if (configClassName != null && !"".equals(configClassName.trim())) { |
| Class<?> clazz = Class.forName(configClassName); |
| if (LogSearchConfig.class.isAssignableFrom(clazz)) { |
| logSearchConfig = (LogSearchConfig) clazz.newInstance(); |
| } else { |
| throw new IllegalArgumentException("Class " + configClassName + " does not implement the interface " + LogSearchConfig.class.getName()); |
| } |
| } else { |
| logSearchConfig = defaultClass.newInstance(); |
| } |
| |
| logSearchConfig.init(component, properties); |
| return logSearchConfig; |
| } catch (Exception e) { |
| LOG.error("Could not initialize logsearch config.", e); |
| throw e; |
| } |
| } |
| } |