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Package for running Aspectran-based Java applications as background processes on Unix-based or Windows operating systems

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/*
 * Copyright (c) 2008-2018 The Aspectran Project
 *
 * 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.aspectran.daemon;

import com.aspectran.core.context.config.AspectranConfig;
import com.aspectran.core.context.config.DaemonConfig;
import com.aspectran.core.context.config.DaemonPollerConfig;
import com.aspectran.core.util.apon.AponReader;
import com.aspectran.daemon.command.CommandRegistry;
import com.aspectran.daemon.command.polling.CommandPoller;
import com.aspectran.daemon.command.polling.FileCommandPoller;
import com.aspectran.daemon.service.DaemonService;

import java.io.File;

/**
 * 

Created: 2017. 12. 11.

* * @since 5.1.0 */ public class AbstractDaemon implements Daemon, Runnable { private String name; private DaemonService service; private CommandPoller commandPoller; private CommandRegistry commandRegistry; private boolean active; @Override public String getName() { return name; } @Override public void setName(String name) { this.name = name; } @Override public DaemonService getService() { return service; } @Override public CommandPoller getCommandPoller() { return commandPoller; } @Override public CommandRegistry getCommandRegistry() { return commandRegistry; } @Override public boolean isActive() { return active; } protected void init(File aspectranConfigFile) throws Exception { AspectranConfig aspectranConfig = new AspectranConfig(); try { AponReader.parse(aspectranConfigFile, aspectranConfig); } catch (Exception e) { throw new IllegalArgumentException("Failed to parse aspectran config file: " + aspectranConfigFile, e); } init(aspectranConfig); } protected void init(AspectranConfig aspectranConfig) throws Exception { try { this.service = DaemonService.create(aspectranConfig); this.service.start(); DaemonConfig daemonConfig = aspectranConfig.touchDaemonConfig(); DaemonPollerConfig pollerConfig = daemonConfig.touchDaemonPollerConfig(); CommandPoller commandPoller = new FileCommandPoller(this, pollerConfig); CommandRegistry commandRegistry = new CommandRegistry(this); commandRegistry.addCommand(daemonConfig.getStringArray(DaemonConfig.commands)); this.commandPoller = commandPoller; this.commandRegistry = commandRegistry; } catch (Exception e) { throw new Exception("Failed to initialize daemon", e); } } protected void start() throws Exception { start(false); } protected void start(boolean wait) throws Exception { if (!active) { if (name == null) { name = this.getClass().getSimpleName(); } Thread thread = new Thread(this, name); thread.start(); if (wait) { thread.join(); } } } @Override public void run() { if (!active) { active = true; getCommandPoller().requeue(); while (active) { try { getCommandPoller().polling(); Thread.sleep(getCommandPoller().getPollingInterval()); } catch (InterruptedException ie) { active = false; } } } } @Override public void stop() { if (active) { active = false; Thread.currentThread().interrupt(); } } protected void destroy() { stop(); if (commandPoller != null) { commandPoller.stop(); commandPoller = null; } if (service != null) { service.stop(); service = null; } } }




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