BPLServlet.java

/*******************************************************************************
 * Copyright (c) 2011 The Board of Trustees of the Leland Stanford Junior University
 * as Operator of the SLAC National Accelerator Laboratory.
 * Copyright (c) 2011 Brookhaven National Laboratory.
 * EPICS archiver appliance is distributed subject to a Software License Agreement found
 * in file LICENSE that is included with this distribution.
 *******************************************************************************/
package org.epics.archiverappliance.retrieval;

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

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

import org.epics.archiverappliance.common.BPLAction;
import org.epics.archiverappliance.common.BasicDispatcher;
import org.epics.archiverappliance.common.GetVersion;
import org.epics.archiverappliance.common.ProcessMetricsReport;
import org.epics.archiverappliance.config.ConfigService;
import org.epics.archiverappliance.retrieval.bpl.AreWeArchivingPV;
import org.epics.archiverappliance.retrieval.bpl.FilterArchivedPVs;
import org.epics.archiverappliance.retrieval.bpl.GetClientConfiguration;
import org.epics.archiverappliance.retrieval.bpl.GetMatchingPVs;
import org.epics.archiverappliance.retrieval.bpl.GetPVMetaData;
import org.epics.archiverappliance.retrieval.bpl.SearchForPVsRegex;
import org.epics.archiverappliance.retrieval.bpl.reports.ApplianceMetrics;
import org.epics.archiverappliance.retrieval.bpl.reports.ApplianceMetricsDetails;
import org.epics.archiverappliance.retrieval.bpl.reports.InstanceReportDetails;

/**
 * The main business logic servlet for retrieval. All BPLActions are registered here.
 * @author mshankar
 *
 */
public class BPLServlet extends HttpServlet {
	private static final long serialVersionUID = 7987830282574602915L;
	private ConfigService configService = null;
	private static HashMap<String, Class<? extends BPLAction>> getActions = new HashMap<String, Class<? extends BPLAction>>();
	static {
		getActions.put("/getApplianceMetrics", ApplianceMetrics.class);
		getActions.put("/getApplianceMetricsForAppliance", ApplianceMetricsDetails.class);
		getActions.put("/getInstanceMetricsForAppliance", InstanceReportDetails.class);
		getActions.put("/searchForPVsRegex", SearchForPVsRegex.class);
		getActions.put("/getMatchingPVs", GetMatchingPVs.class);
		getActions.put("/getProcessMetrics", ProcessMetricsReport.class);
		getActions.put("/getVersion", GetVersion.class);
		getActions.put("/getClientConfig", GetClientConfiguration.class);
		getActions.put("/getMetadata", GetPVMetaData.class);
		getActions.put("/areWeArchivingPV", AreWeArchivingPV.class);
	}
	
	protected void doGet(HttpServletRequest req, HttpServletResponse resp)
			throws ServletException, IOException {
		BasicDispatcher.dispatch(req, resp, configService, getActions);
	}
	
	private static HashMap<String, Class<? extends BPLAction>> postActions = new HashMap<String, Class<? extends BPLAction>>();
	static {
		postActions.put("/filterArchivedPVs", FilterArchivedPVs.class);
		// Uncomment after adding readonly support for the client config.
		// postActions.put("/putClientConfig", PutClientConfiguration.class);
	}

	@Override
	protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
		BasicDispatcher.dispatch(req, resp, configService, postActions);
	}

	

	@Override
	public void init() throws ServletException {
		this.configService = (ConfigService) this.getServletContext().getAttribute(ConfigService.CONFIG_SERVICE_NAME);
	}

}