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115 lines
4.3 KiB
115 lines
4.3 KiB
/*
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This file is part of Airsonic.
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Airsonic is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Airsonic is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Airsonic. If not, see <http://www.gnu.org/licenses/>.
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Copyright 2016 (C) Airsonic Authors
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Based upon Subsonic, Copyright 2009 (C) Sindre Mehus
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*/
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package org.airsonic.player.controller;
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import org.airsonic.player.service.SecurityService;
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import org.airsonic.player.service.SettingsService;
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import org.airsonic.player.service.VersionService;
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import org.apache.commons.io.input.ReversedLinesFileReader;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.stereotype.Controller;
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import org.springframework.web.bind.annotation.RequestMapping;
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import org.springframework.web.bind.annotation.RequestMethod;
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import org.springframework.web.servlet.ModelAndView;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import java.io.File;
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import java.nio.charset.Charset;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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/**
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* Controller for the help page.
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*
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* @author Sindre Mehus
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*/
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@Controller
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@RequestMapping("/help")
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public class HelpController {
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private static final Logger logger = LoggerFactory.getLogger(HelpController.class);
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private static final int LOG_LINES_TO_SHOW = 50;
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@Autowired
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private VersionService versionService;
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@Autowired
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private SettingsService settingsService;
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@Autowired
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private SecurityService securityService;
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@RequestMapping(method = RequestMethod.GET)
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protected ModelAndView handleRequestInternal(HttpServletRequest request, HttpServletResponse response) throws Exception {
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Map<String, Object> map = new HashMap<>();
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if (versionService.isNewFinalVersionAvailable()) {
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map.put("newVersionAvailable", true);
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map.put("latestVersion", versionService.getLatestFinalVersion());
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} else if (versionService.isNewBetaVersionAvailable()) {
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map.put("newVersionAvailable", true);
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map.put("latestVersion", versionService.getLatestBetaVersion());
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}
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long totalMemory = Runtime.getRuntime().totalMemory();
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long freeMemory = Runtime.getRuntime().freeMemory();
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String serverInfo = request.getSession().getServletContext().getServerInfo() +
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", java " + System.getProperty("java.version") +
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", " + System.getProperty("os.name");
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map.put("user", securityService.getCurrentUser(request));
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map.put("brand", settingsService.getBrand());
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map.put("localVersion", versionService.getLocalVersion());
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map.put("buildDate", versionService.getLocalBuildDate());
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map.put("buildNumber", versionService.getLocalBuildNumber());
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map.put("serverInfo", serverInfo);
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map.put("usedMemory", totalMemory - freeMemory);
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map.put("totalMemory", totalMemory);
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File logFile = SettingsService.getLogFile();
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List<String> latestLogEntries = getLatestLogEntries(logFile);
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map.put("logEntries", latestLogEntries);
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map.put("logFile", logFile);
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return new ModelAndView("help","model",map);
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}
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private static List<String> getLatestLogEntries(File logFile) {
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try {
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List<String> lines = new ArrayList<>(LOG_LINES_TO_SHOW);
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ReversedLinesFileReader reader = new ReversedLinesFileReader(logFile, Charset.defaultCharset());
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String current;
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while((current = reader.readLine()) != null && lines.size() < LOG_LINES_TO_SHOW) {
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lines.add(0, current);
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}
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return lines;
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} catch (Exception e) {
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logger.warn("Could not open log file " + logFile, e);
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return null;
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}
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}
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}
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