| /** |
| * 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.camel.component.properties; |
| |
| import java.io.FileInputStream; |
| import java.io.FileNotFoundException; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.util.Map; |
| import java.util.Properties; |
| |
| import org.apache.camel.CamelContext; |
| import org.apache.camel.util.ObjectHelper; |
| |
| /** |
| * Default {@link org.apache.camel.component.properties.PropertiesResolver} which can resolve properties |
| * from file and classpath. |
| * <p/> |
| * You can denote <tt>classpath:</tt> or <tt>file:</tt> as prefix in the uri to select whether the file |
| * is located in the classpath or on the file system. |
| * |
| * @version |
| */ |
| public class DefaultPropertiesResolver implements PropertiesResolver { |
| |
| public Properties resolveProperties(CamelContext context, String... uri) throws Exception { |
| Properties answer = new Properties(); |
| |
| for (String path : uri) { |
| if (path.startsWith("ref:")) { |
| Properties prop = loadPropertiesFromRegistry(context, path); |
| prop = prepareLoadedProperties(prop); |
| answer.putAll(prop); |
| } else if (path.startsWith("file:")) { |
| Properties prop = loadPropertiesFromFilePath(context, path); |
| prop = prepareLoadedProperties(prop); |
| answer.putAll(prop); |
| } else { |
| // default to classpath |
| Properties prop = loadPropertiesFromClasspath(context, path); |
| prop = prepareLoadedProperties(prop); |
| answer.putAll(prop); |
| } |
| } |
| |
| return answer; |
| } |
| |
| protected Properties loadPropertiesFromFilePath(CamelContext context, String path) throws IOException { |
| if (path.startsWith("file:")) { |
| path = ObjectHelper.after(path, "file:"); |
| } |
| InputStream is = new FileInputStream(path); |
| Properties answer = new Properties(); |
| answer.load(is); |
| return answer; |
| } |
| |
| protected Properties loadPropertiesFromClasspath(CamelContext context, String path) throws IOException { |
| if (path.startsWith("classpath:")) { |
| path = ObjectHelper.after(path, "classpath:"); |
| } |
| InputStream is = context.getClassResolver().loadResourceAsStream(path); |
| if (is == null) { |
| throw new FileNotFoundException("Properties file " + path + " not found in classpath"); |
| } |
| Properties answer = new Properties(); |
| answer.load(is); |
| return answer; |
| } |
| |
| protected Properties loadPropertiesFromRegistry(CamelContext context, String path) throws IOException { |
| if (path.startsWith("ref:")) { |
| path = ObjectHelper.after(path, "ref:"); |
| } |
| Properties answer = context.getRegistry().lookup(path, Properties.class); |
| if (answer == null) { |
| throw new FileNotFoundException("Properties " + path + " not found in registry"); |
| } |
| return answer; |
| } |
| |
| /** |
| * Strategy to prepare loaded properties before being used by Camel. |
| * <p/> |
| * This implementation will ensure values are trimmed, as loading properties from |
| * a file with values having trailing spaces is not automatic trimmed by the Properties API |
| * from the JDK. |
| * |
| * @param properties the properties |
| * @return the prepared properties |
| */ |
| protected Properties prepareLoadedProperties(Properties properties) { |
| Properties answer = new Properties(); |
| for (Map.Entry<Object, Object> entry : properties.entrySet()) { |
| Object key = entry.getKey(); |
| Object value = entry.getValue(); |
| // trim string values which can be a problem when loading from a properties file and there |
| // is leading or trailing spaces in the value |
| if (value instanceof String) { |
| String s = (String) value; |
| s = s.trim(); |
| value = s; |
| } |
| answer.put(key, value); |
| } |
| return answer; |
| } |
| |
| } |