| /** |
| * 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.spring.boot; |
| |
| import java.io.FileInputStream; |
| import java.io.IOException; |
| import java.util.Properties; |
| |
| import org.apache.camel.util.StringHelper; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| import org.springframework.context.ApplicationContext; |
| import org.springframework.core.env.PropertySource; |
| import org.springframework.core.io.Resource; |
| |
| /** |
| * To load properties from files, such as a secret mounted to the container. |
| */ |
| public class FilePropertySource extends PropertySource { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(FilePropertySource.class); |
| |
| // properties for all the loaded files |
| private final Properties properties; |
| |
| public FilePropertySource(String name, ApplicationContext applicationContext, String directory) { |
| super(name); |
| StringHelper.notEmpty(directory, "directory"); |
| |
| Properties loaded = new Properties(); |
| try { |
| Resource[] files = applicationContext.getResources(directory); |
| for (Resource file : files) { |
| if (file.exists()) { |
| try (FileInputStream fis = new FileInputStream(file.getFile())) { |
| LOG.debug("Loading properties from file: {}", file); |
| Properties extra = new Properties(); |
| extra.load(fis); |
| if (!extra.isEmpty()) { |
| loaded.putAll(extra); |
| } |
| } catch (IOException e) { |
| // ignore |
| } |
| } |
| } |
| } catch (IOException e) { |
| // ignore |
| } |
| |
| // if we loaded any files then store as properties |
| if (loaded.isEmpty()) { |
| properties = null; |
| LOG.warn("No properties found while loading from: {}", directory); |
| } else { |
| properties = loaded; |
| LOG.info("Loaded {} properties from: {}", properties.size(), directory); |
| } |
| } |
| |
| @Override |
| public Object getProperty(String name) { |
| Object answer = properties != null ? properties.getProperty(name) : null; |
| LOG.trace("getProperty {} -> {}", name, answer); |
| return answer; |
| } |
| } |