| /* |
| * 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.druid.guice; |
| |
| import com.google.inject.Binder; |
| import com.google.inject.Module; |
| import org.apache.druid.java.util.common.guava.CloseQuietly; |
| import org.apache.druid.java.util.common.logger.Logger; |
| |
| import java.io.BufferedInputStream; |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.FileNotFoundException; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.InputStreamReader; |
| import java.nio.charset.StandardCharsets; |
| import java.util.List; |
| import java.util.Properties; |
| |
| public class PropertiesModule implements Module |
| { |
| private static final Logger log = new Logger(PropertiesModule.class); |
| |
| private final List<String> propertiesFiles; |
| |
| public PropertiesModule(List<String> propertiesFiles) |
| { |
| this.propertiesFiles = propertiesFiles; |
| } |
| |
| @Override |
| public void configure(Binder binder) |
| { |
| final Properties fileProps = new Properties(); |
| Properties systemProps = System.getProperties(); |
| |
| Properties props = new Properties(fileProps); |
| props.putAll(systemProps); |
| |
| for (String propertiesFile : propertiesFiles) { |
| InputStream stream = ClassLoader.getSystemResourceAsStream(propertiesFile); |
| try { |
| if (stream == null) { |
| File workingDirectoryFile = new File(systemProps.getProperty("druid.properties.file", propertiesFile)); |
| if (workingDirectoryFile.exists()) { |
| stream = new BufferedInputStream(new FileInputStream(workingDirectoryFile)); |
| } |
| } |
| |
| if (stream != null) { |
| log.debug("Loading properties from %s", propertiesFile); |
| try (final InputStreamReader in = new InputStreamReader(stream, StandardCharsets.UTF_8)) { |
| fileProps.load(in); |
| } |
| catch (IOException e) { |
| throw new RuntimeException(e); |
| } |
| } |
| } |
| catch (FileNotFoundException e) { |
| log.error(e, "This can only happen if the .exists() call lied."); |
| } |
| finally { |
| CloseQuietly.close(stream); |
| } |
| } |
| |
| binder.bind(Properties.class).toInstance(props); |
| } |
| } |