SystemConfigService.java

/* 
 * Licensed 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.ngrinder.operation.service;

import java.io.IOException;

import org.apache.commons.io.FileUtils;
import org.ngrinder.infra.config.Config;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

/**
 * System configuration operation service.
 * 
 * @author Alex Qin
 * @since 3.1
 */
@Service
public class SystemConfigService {

	private static final Logger LOG = LoggerFactory.getLogger(SystemConfigService.class);

	@Autowired
	private Config config;

	/**
	 * Get system configuration file content.
	 * 
	 * @return file content.
	 */
	public String getOne() {
		try {
			return FileUtils.readFileToString(config.getHome().getSubFile("system.conf"), "UTF-8");
		} catch (Exception e) {
			LOG.error("Error while reading system configuration file.");
			return null;
		}
	}

	/**
	 * Save content to system configuration file.
	 * 
	 * @param content
	 *            file content.
	 * @return save successfully or not.
	 */
	public boolean save(String content) {
		try {
			FileUtils.writeStringToFile(config.getHome().getSubFile("system.conf"), content, "UTF-8");
		} catch (IOException e) {
			LOG.error("Error while writing system configuration file.");
			return false;
		}
		return true;
	}
}