com.mtt.myapp.operation.service.AnnouncementService.java Source code

Introduction

Here is the source code for com.mtt.myapp.operation.service.AnnouncementService.java

Source

/* 
 * 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 com.mtt.myapp.operation.service;

import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

import com.mtt.myapp.infra.config.AppConfig;
import com.mtt.myapp.infra.config.AppHome;
import org.apache.commons.io.FileUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cache.annotation.CacheEvict;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.stereotype.Service;

/**
 * Announcement operating service.
 * 
 * @author AlexQin
 * @since 3.1
 */
@Service
public class AnnouncementService {

    private static final Logger LOGGER = LoggerFactory.getLogger(AnnouncementService.class);

    @Autowired
    private AppHome home;

    @Autowired
    private AppConfig config;

    /**
     * Get announcement content.
     * 
     * @return file content.
     */
    public String getSysAnnouncement() {
        return config.getSystemAnnouncement();
    }

    public String getUserAnnouncement() {
        return config.getUserAnnouncement();
    }

    @Cacheable("announce")
    public Map<String, String> getAnnouncement() {
        Map announce = new HashMap();
        announce.put("system", config.getSystemAnnouncement());
        announce.put("user", config.getUserAnnouncement());
        return announce;
    }

    public String getFileContent() {
        try {
            return FileUtils.readFileToString(home.getSubFile("announce.properties"), "UTF-8");
        } catch (IOException e) {
            LOGGER.error("Error while writing announcement file.");
            return "";
        }
    }

    /**
     * Check whether the announcement needs display.
     *
     * @return true if it needs
     */
    public boolean check() {
        // TODO: add some pattern in announcement for the display time logic.
        return true;
    }

    /**
     * Save content to announcement.conf file.
     * 
     * @param content
     *            file content.
     * @return save successfully or not.
     */
    @CacheEvict("announce")
    public boolean save(String content) {
        try {
            FileUtils.writeStringToFile(home.getSubFile("announce.properties"), content, "UTF-8");
        } catch (IOException e) {
            LOGGER.error("Error while writing announcement file.");
            return false;
        }
        return true;
    }
}