| // 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 com.cloud.agent.dao.impl; |
| |
| import java.io.File; |
| import java.io.FileNotFoundException; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.util.Map; |
| import java.util.Properties; |
| |
| import org.apache.commons.io.IOUtils; |
| import org.apache.log4j.Logger; |
| |
| import com.cloud.agent.dao.StorageComponent; |
| import com.cloud.utils.PropertiesUtil; |
| |
| /** |
| * Uses Properties to implement storage. |
| * |
| * @config {@table || Param Name | Description | Values | Default || || path | |
| * path to the properties _file | String | db/db.properties || * } |
| **/ |
| public class PropertiesStorage implements StorageComponent { |
| private static final Logger s_logger = Logger.getLogger(PropertiesStorage.class); |
| Properties _properties = new Properties(); |
| File _file; |
| String _name; |
| |
| @Override |
| public synchronized String get(String key) { |
| return _properties.getProperty(key); |
| } |
| |
| @Override |
| public synchronized void persist(String key, String value) { |
| if (!loadFromFile(_file)) { |
| s_logger.error("Failed to load changes and then write to them"); |
| } |
| _properties.setProperty(key, value); |
| FileOutputStream output = null; |
| try { |
| output = new FileOutputStream(_file); |
| _properties.store(output, _name); |
| output.flush(); |
| output.close(); |
| } catch (IOException e) { |
| s_logger.error("Uh-oh: ", e); |
| } finally { |
| IOUtils.closeQuietly(output); |
| } |
| } |
| |
| private synchronized boolean loadFromFile(final File file) { |
| try { |
| PropertiesUtil.loadFromFile(_properties, file); |
| _file = file; |
| } catch (FileNotFoundException e) { |
| s_logger.error("How did we get here? ", e); |
| return false; |
| } catch (IOException e) { |
| s_logger.error("IOException: ", e); |
| return false; |
| } |
| return true; |
| } |
| |
| @Override |
| public synchronized boolean configure(String name, Map<String, Object> params) { |
| _name = name; |
| String path = (String)params.get("path"); |
| if (path == null) { |
| path = "agent.properties"; |
| } |
| |
| File file = PropertiesUtil.findConfigFile(path); |
| if (file == null) { |
| file = new File(path); |
| try { |
| if (!file.createNewFile()) { |
| s_logger.error("Unable to create _file: " + file.getAbsolutePath()); |
| return false; |
| } |
| } catch (IOException e) { |
| s_logger.error("Unable to create _file: " + file.getAbsolutePath(), e); |
| return false; |
| } |
| } |
| return loadFromFile(file); |
| } |
| |
| @Override |
| public synchronized String getName() { |
| return _name; |
| } |
| |
| @Override |
| public boolean start() { |
| return true; |
| } |
| |
| @Override |
| public boolean stop() { |
| return true; |
| } |
| |
| @Override |
| public void setName(String name) { |
| // TODO Auto-generated method stub |
| |
| } |
| |
| @Override |
| public void setConfigParams(Map<String, Object> params) { |
| // TODO Auto-generated method stub |
| |
| } |
| |
| @Override |
| public Map<String, Object> getConfigParams() { |
| // TODO Auto-generated method stub |
| return null; |
| } |
| |
| @Override |
| public int getRunLevel() { |
| // TODO Auto-generated method stub |
| return 0; |
| } |
| |
| @Override |
| public void setRunLevel(int level) { |
| // TODO Auto-generated method stub |
| } |
| |
| } |