rhelp/org.eclipse.statet.rhelp.server/src/main/java/org/eclipse/statet/rhelp/server/Application.java

/*=============================================================================#
 # Copyright (c) 2018, 2019 Stephan Wahlbrink and others.
 # 
 # This program and the accompanying materials are made available under the
 # terms of the Eclipse Public License 2.0 which is available at
 # https://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0
 # which is available at https://www.apache.org/licenses/LICENSE-2.0.
 # 
 # SPDX-License-Identifier: EPL-2.0 OR Apache-2.0
 # 
 # Contributors:
 #     Stephan Wahlbrink <sw@wahlbrink.eu> - initial API and implementation
 #=============================================================================*/

package org.eclipse.statet.rhelp.server;

import java.util.concurrent.ConcurrentHashMap;

import javax.annotation.PreDestroy;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.WebApplicationType;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.servlet.ServletComponentScan;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.ComponentScan;

import org.eclipse.statet.jcommons.collections.ImCollections;
import org.eclipse.statet.jcommons.collections.ImList;
import org.eclipse.statet.jcommons.lang.NonNullByDefault;
import org.eclipse.statet.jcommons.lang.ObjectUtils.ToStringBuilder;
import org.eclipse.statet.jcommons.runtime.BasicAppEnvironment;
import org.eclipse.statet.jcommons.runtime.CommonsRuntime;
import org.eclipse.statet.jcommons.status.InfoStatus;
import org.eclipse.statet.jcommons.status.Status;
import org.eclipse.statet.jcommons.status.StatusPrinter;
import org.eclipse.statet.jcommons.status.Statuses;

import org.eclipse.statet.internal.rhelp.server.RHelpServerInternals;
import org.eclipse.statet.internal.rhelp.server.update.REnvIndexController;


@SpringBootApplication
@ComponentScan (basePackageClasses= { RHelpServerInternals.class })
@ServletComponentScan (basePackageClasses= { RHelpServerInternals.class })
@NonNullByDefault
public class Application extends BasicAppEnvironment {
	
	
	public static final String BUNDLE_ID= "org.eclipse.statet.rhelp.server"; //$NON-NLS-1$
	
	
	public static void main(final String[] args) {
		final SpringApplication app= new SpringApplication(Application.class);
		
		if (args != null) {
			final ImList<String> argList= ImCollections.newList(args);
			if (argList.contains("-index-and-exit")) { //$NON-NLS-1$
				app.setWebApplicationType(WebApplicationType.NONE);
				app.setAdditionalProfiles(REnvIndexController.INDEX_AND_EXIT_PROFILE);
			}
		}
		
		app.run(args);
	}
	
	
	private final ConcurrentHashMap<String, Log> logs= new ConcurrentHashMap<>();
	private final StatusPrinter logStatusPrinter= new StatusPrinter();
	
	@Autowired
	private ApplicationContext appContext;
	
	
	public Application() {
		CommonsRuntime.init(this);
		
		log(new InfoStatus(BUNDLE_ID, "Application started."));
	}
	
	@PreDestroy
	protected void dispose() {
		onAppStopping();
		
		log(new InfoStatus(BUNDLE_ID, "Application stopped."));
	}
	
	
	@Override
	public String getBundleId() {
		return "org.eclipse.statet.rhelp.server"; //$NON-NLS-1$
	}
	
	
	@Override
	public void log(final Status status) {
		final Log log= this.logs.computeIfAbsent(status.getBundleId(),
				(final String s) -> LogFactory.getLog(s) );
		
		final ToStringBuilder sb= new ToStringBuilder();
		sb.append(Statuses.getSeverityString(status.getSeverity()));
		sb.append(" ["); //$NON-NLS-1$
		sb.append(status.getCode());
		sb.append(']');
		if (status.getMessage().length() <= 80 && status.getMessage().indexOf('\n') == -1) {
			sb.append(' ');
			sb.append(status.getMessage());
		}
		else {
			sb.addProp("message", status.getMessage()); //$NON-NLS-1$
		}
		if (status.isMultiStatus()) {
			final ImList<Status> children= status.getChildren();
			if (children != null && !children.isEmpty()) {
				final StringBuilder sb0= new StringBuilder();
				sb0.append("Status:\n");
				this.logStatusPrinter.print(children, sb0);
				sb.addProp("children", sb0.toString()); //$NON-NLS-1$
			}
			else {
				sb.addProp("children", "<none>"); //$NON-NLS-1$
			}
		}
		
		switch (status.getSeverity()) {
		case Status.ERROR:
			log.error(sb.toString(), status.getException());
			break;
		case Status.WARNING:
			log.warn(sb.toString(), status.getException());
			break;
		default:
			log.info(sb.toString(), status.getException());
			break;
		}
	}
	
}