LoggingServlet.java

//Dstl (c) Crown Copyright 2017
package uk.gov.dstl.baleen.core.web.servlets;

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import uk.gov.dstl.baleen.core.logging.BaleenLogging;
import uk.gov.dstl.baleen.core.web.security.WebPermission;

/**
 * Outputs all recent logs as JSON.
 *
 * If using authentication, the user will need the "logging" role to access this
 * resource.
 *
 * 
 * 
 *
 */
public class LoggingServlet extends AbstractApiServlet {
	private static final Logger LOGGER = LoggerFactory.getLogger(LoggingServlet.class);

	private static final long serialVersionUID = 1L;

	private static final String ROLES = "logging";

	private final transient BaleenLogging logging;

	/**
	 * New instance, which will report on the supplied logging.
	 *
	 * @param registry
	 *            the logging to access the data from
	 */
	public LoggingServlet(BaleenLogging logging) {
		super(LOGGER, LoggingServlet.class);
		this.logging = logging;
	}

	@Override
	public WebPermission[] getPermissions() {
		return new WebPermission[] { new WebPermission("Access logs", ROLES) };
	}

	@Override
	protected void get(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
		respondWithJson(resp, logging.getRecentLogs());
	}
}