com.Grande.GSM.BACCWS_WAR.WS.REST.EOS.DHCPEndpoint.java Source code

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Here is the source code for com.Grande.GSM.BACCWS_WAR.WS.REST.EOS.DHCPEndpoint.java

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package com.Grande.GSM.BACCWS_WAR.WS.REST.EOS;

import com.Grande.GSM.BACCWS_WAR.DataObjects.QueryResponse;
import com.Grande.GSM.BACCWS_WAR.Utilities.BACCProvisioner;
import com.Grande.GSM.BACCWS_WAR.Utilities.SimpleLogging;
import com.Grande.GSM.BACCWS_WAR.Utilities.Translations;
import com.google.common.base.Stopwatch;
import java.util.Map;
import java.util.concurrent.TimeUnit;
import javax.inject.Inject;
import javax.ws.rs.Produces;
import javax.ws.rs.Consumes;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.QueryParam;
import javax.ws.rs.core.MediaType;

/**
 * REST Web Service
 *
 * @author rich
 */
@Path("/")
@Produces({ MediaType.APPLICATION_JSON })
@Consumes({ MediaType.APPLICATION_JSON })
public class DHCPEndpoint {

    // <editor-fold defaultstate="collapsed" desc="****** Class member vars ******">
    @Inject
    private Translations trnBN;
    @Inject
    private BACCProvisioner bacEJB;
    private final String strThreadId;
    // </editor-fold>

    // <editor-fold defaultstate="collapsed" desc="****** Bean State Methods ******">
    public DHCPEndpoint() {
        this.strThreadId = String.valueOf(Thread.currentThread().getId());
        SimpleLogging.vLogEvent(this.strThreadId, "Constructor called");
    }
    // </editor-fold>

    @GET
    public String fetchDHCPInfoByMAC(@QueryParam("mac") final String strMac) {

        // <editor-fold defaultstate="collapsed" desc="****** Method vars ******">
        final Stopwatch timer = new Stopwatch();
        final QueryResponse qRes = new QueryResponse();
        String strResponse = null;
        Map mapModem = null;
        // start the execution timer
        timer.start();
        // </editor-fold>

        try {

            qRes.vSetNode(java.net.InetAddress.getLocalHost().getHostName());
            mapModem = this.bacEJB.mapFetchDHCPByMac(strMac);
            qRes.vSetSuccessFlag(true);
            qRes.vAddResult(mapModem);

        } catch (Exception e) {

            // <editor-fold defaultstate="collapsed" desc="****** Handle failures ******">
            qRes.vSetSuccessFlag(false);
            // handle NPE differently since getMessage() is null
            if (e instanceof NullPointerException) {
                qRes.vSetMessage("NPE occured when serializing result to JSON! " + "File: "
                        + e.getStackTrace()[0].getFileName() + ", " + "Method: "
                        + e.getStackTrace()[0].getMethodName() + ", " + "Line: "
                        + e.getStackTrace()[0].getLineNumber());
            } else {
                qRes.vSetMessage(e.getMessage());
            }
            SimpleLogging.vLogException(this.strThreadId, e);
            // </editor-fold>

        } finally {

            // <editor-fold defaultstate="collapsed" desc="****** Stop timer, convert response to JSON ******">
            timer.stop();
            qRes.vSetRoundTrip(String.valueOf(timer.elapsedTime(TimeUnit.SECONDS)) + "."
                    + String.valueOf(timer.elapsedTime(TimeUnit.MILLISECONDS)));
            strResponse = this.trnBN.strQueryResponseToJSON(qRes);
            SimpleLogging.vLogEvent(this.strThreadId + "|" + qRes.strGetRoundTripInSeconds() + "s",
                    "retrieved " + qRes.intGetDataCount() + " records");
            // </editor-fold>

        }
        return strResponse;

    }

}