Java tutorial
/* * Copyright (c) 2006-2007 Massachusetts General Hospital * All rights reserved. This program and the accompanying materials * are made available under the terms of the i2b2 Software License v1.0 * which accompanies this distribution. * * Contributors: * Raj Kuttan * Lori Phillips */ package edu.harvard.i2b2.im.ws; import edu.harvard.i2b2.common.exception.I2B2Exception; import edu.harvard.i2b2.im.delegate.GetAuditHandlerHandler; import edu.harvard.i2b2.im.delegate.IsKeySetHandlerHandler; import edu.harvard.i2b2.im.delegate.RequestHandler; import edu.harvard.i2b2.im.delegate.PdoHandlerHandler; import edu.harvard.i2b2.im.delegate.SetKeyHandlerHandler; import edu.harvard.i2b2.im.delegate.ValidationHandlerHandler; import edu.harvard.i2b2.im.ws.ExecutorRunnable; import edu.harvard.i2b2.im.ws.MessageFactory; import edu.harvard.i2b2.im.datavo.i2b2message.MessageHeaderType; import edu.harvard.i2b2.im.datavo.i2b2message.ResponseHeaderType; import edu.harvard.i2b2.im.datavo.i2b2message.ResponseMessageType; import org.apache.axiom.om.OMElement; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; //import javax.xml.stream.XMLStreamException; /** * This is webservice skeleton class. It parses incoming Workplace service requests * and generates responses in the Work Data Object XML format. * */ public class IMService { private static Log log = LogFactory.getLog(IMService.class); public OMElement validateSiteId(OMElement requestElement) throws Exception { log.debug("In Validate Site ID"); OMElement returnElement = null; String workplaceDataResponse = null; String unknownErrorMessage = "Error message delivered from the remote server \n" + "You may wish to retry your last action"; if (requestElement == null) { log.error("Incoming IM request is null"); ResponseMessageType responseMsgType = MessageFactory.doBuildErrorResponse(null, unknownErrorMessage); workplaceDataResponse = MessageFactory.convertToXMLString(responseMsgType); return MessageFactory.createResponseOMElementFromString(workplaceDataResponse); } PDORequestMessage protectedDataMsg = new PDORequestMessage(); String requestElementString = requestElement.toString(); protectedDataMsg.setRequestMessageType(requestElementString); long waitTime = 0; if (protectedDataMsg.getRequestMessageType() != null) { if (protectedDataMsg.getRequestMessageType().getRequestHeader() != null) { waitTime = protectedDataMsg.getRequestMessageType().getRequestHeader().getResultWaittimeMs(); } } return execute(new ValidationHandlerHandler(protectedDataMsg), waitTime); } public OMElement pdorequest(OMElement requestElement) throws Exception { log.debug("In pdorequest"); OMElement returnElement = null; String workplaceDataResponse = null; String unknownErrorMessage = "Error message delivered from the remote server \n" + "You may wish to retry your last action"; if (requestElement == null) { log.error("Incoming IM request is null"); ResponseMessageType responseMsgType = MessageFactory.doBuildErrorResponse(null, unknownErrorMessage); workplaceDataResponse = MessageFactory.convertToXMLString(responseMsgType); return MessageFactory.createResponseOMElementFromString(workplaceDataResponse); } PDORequestMessage protectedDataMsg = new PDORequestMessage(); String requestElementString = requestElement.toString(); protectedDataMsg.setRequestMessageType(requestElementString); long waitTime = 0; if (protectedDataMsg.getRequestMessageType() != null) { if (protectedDataMsg.getRequestMessageType().getRequestHeader() != null) { waitTime = protectedDataMsg.getRequestMessageType().getRequestHeader().getResultWaittimeMs(); } } return execute(new PdoHandlerHandler(protectedDataMsg), waitTime); } public OMElement setKey(OMElement requestElement) throws Exception { log.debug("In setKey"); OMElement returnElement = null; String workplaceDataResponse = null; String unknownErrorMessage = "Error message delivered from the remote server \n" + "You may wish to retry your last action"; if (requestElement == null) { log.error("Incoming IM request is null"); ResponseMessageType responseMsgType = MessageFactory.doBuildErrorResponse(null, unknownErrorMessage); workplaceDataResponse = MessageFactory.convertToXMLString(responseMsgType); return MessageFactory.createResponseOMElementFromString(workplaceDataResponse); } SetKeyRequestMessage setKey = new SetKeyRequestMessage(); String requestElementString = requestElement.toString(); setKey.setRequestMessageType(requestElementString); long waitTime = 0; if (setKey.getRequestMessageType() != null) { if (setKey.getRequestMessageType().getRequestHeader() != null) { waitTime = setKey.getRequestMessageType().getRequestHeader().getResultWaittimeMs(); } } return execute(new SetKeyHandlerHandler(setKey), waitTime); } public OMElement isKeySet(OMElement requestElement) throws Exception { log.debug("In Is Key Set"); OMElement returnElement = null; String workplaceDataResponse = null; String unknownErrorMessage = "Error message delivered from the remote server \n" + "You may wish to retry your last action"; if (requestElement == null) { log.error("Incoming IM request is null"); ResponseMessageType responseMsgType = MessageFactory.doBuildErrorResponse(null, unknownErrorMessage); workplaceDataResponse = MessageFactory.convertToXMLString(responseMsgType); return MessageFactory.createResponseOMElementFromString(workplaceDataResponse); } IsKeySetRequestMessage setKey = new IsKeySetRequestMessage(); String requestElementString = requestElement.toString(); setKey.setRequestMessageType(requestElementString); long waitTime = 0; if (setKey.getRequestMessageType() != null) { if (setKey.getRequestMessageType().getRequestHeader() != null) { waitTime = setKey.getRequestMessageType().getRequestHeader().getResultWaittimeMs(); } } return execute(new IsKeySetHandlerHandler(setKey), waitTime); } public OMElement getAudit(OMElement requestElement) throws Exception { log.debug("In Get Audit"); OMElement returnElement = null; String workplaceDataResponse = null; String unknownErrorMessage = "Error message delivered from the remote server \n" + "You may wish to retry your last action"; if (requestElement == null) { log.error("Incoming IM request is null"); ResponseMessageType responseMsgType = MessageFactory.doBuildErrorResponse(null, unknownErrorMessage); workplaceDataResponse = MessageFactory.convertToXMLString(responseMsgType); return MessageFactory.createResponseOMElementFromString(workplaceDataResponse); } GetAuditRequestMessage getAudit = new GetAuditRequestMessage(); String requestElementString = requestElement.toString(); getAudit.setRequestMessageType(requestElementString); long waitTime = 0; if (getAudit.getRequestMessageType() != null) { if (getAudit.getRequestMessageType().getRequestHeader() != null) { waitTime = getAudit.getRequestMessageType().getRequestHeader().getResultWaittimeMs(); } } return execute(new GetAuditHandlerHandler(getAudit), waitTime); } private OMElement execute(RequestHandler handler, long waitTime) throws I2B2Exception { //do workplace processing inside thread, so that // service could send back message with timeout error. log.debug("In execute"); OMElement returnElement = null; String unknownErrorMessage = "Error message delivered from the remote server \n" + "You may wish to retry your last action"; ExecutorRunnable er = new ExecutorRunnable(); er.setRequestHandler(handler); Thread t = new Thread(er); String workplaceDataResponse = null; synchronized (t) { t.start(); // try { // if (waitTime > 0) { // t.wait(waitTime); // } else { // t.wait(); // } try { long startTime = System.currentTimeMillis(); long deltaTime = -1; while ((er.isJobCompleteFlag() == false) && (deltaTime < waitTime)) { if (waitTime > 0) { t.wait(waitTime - deltaTime); deltaTime = System.currentTimeMillis() - startTime; } else { t.wait(); } } workplaceDataResponse = er.getOutputString(); if (workplaceDataResponse == null) { if (er.getJobException() != null) { log.error("er.jobException is " + er.getJobException().getMessage()); log.info("waitTime is " + waitTime); ResponseMessageType responseMsgType = MessageFactory.doBuildErrorResponse(null, unknownErrorMessage); workplaceDataResponse = MessageFactory.convertToXMLString(responseMsgType); } else if (er.isJobCompleteFlag() == false) { //<result_waittime_ms>5000</result_waittime_ms> String timeOuterror = "Remote server timed out \n" + "Result waittime = " + waitTime + " ms elapsed,\nPlease try again"; log.error(timeOuterror); log.debug( "im waited " + deltaTime + "ms for " + er.getRequestHandler().getClass().getName()); ResponseMessageType responseMsgType = MessageFactory.doBuildErrorResponse(null, timeOuterror); workplaceDataResponse = MessageFactory.convertToXMLString(responseMsgType); } else { log.error("im data response is null"); log.info("waitTime is " + waitTime); log.debug( "im waited " + deltaTime + "ms for " + er.getRequestHandler().getClass().getName()); ResponseMessageType responseMsgType = MessageFactory.doBuildErrorResponse(null, unknownErrorMessage); workplaceDataResponse = MessageFactory.convertToXMLString(responseMsgType); } } } catch (InterruptedException e) { log.error(e.getMessage()); throw new I2B2Exception("Thread error while running IM job "); } finally { t.interrupt(); er = null; t = null; } } returnElement = MessageFactory.createResponseOMElementFromString(workplaceDataResponse); return returnElement; } }