Examples with Reply org.directwebremoting.extend.Reply used on opensource projects

Example 1 with Reply

use of org.directwebremoting.extend.Reply in project ma-core-public by infiniteautomation.

the class ParallelDefaultRemoter method execute.

/**
 * Execute a set of remote calls in parallel and generate set of reply data
 * for later conversion to whatever wire protocol we are using today.
 * @param calls The set of calls to execute in parallel
 * @return A set of reply data objects
 */
public Replies execute(Calls calls) {
    Replies replies = new Replies(calls.getBatchId());
    Future[] future = new Future[calls.getCallCount()];
    if (calls.getCallCount() == 1) {
        return super.execute(calls);
    } else {
        for (int callNum = 0; callNum < calls.getCallCount(); callNum++) {
            Call call = calls.getCall(callNum);
            future[callNum] = executorService.submit(new OneCall(call));
        }
        for (int callNum = 0; callNum < calls.getCallCount(); callNum++) {
            try {
                Reply reply = (Reply) future[callNum].get(this.timeout, TimeUnit.MILLISECONDS);
                replies.addReply(reply);
            } catch (InterruptedException ex) {
                log.warn("Method execution failed: ", ex);
                replies.addReply(new Reply(calls.getCall(callNum).getCallId(), null, ex));
            } catch (ExecutionException ex) {
                log.warn("Method execution failed: ", ex);
                replies.addReply(new Reply(calls.getCall(callNum).getCallId(), null, ex));
            } catch (TimeoutException ex) {
                log.warn("Method execution failed: ", ex);
                replies.addReply(new Reply(calls.getCall(callNum).getCallId(), null, ex));
            }
        }
        return replies;
    }
}

Example 2 with Reply

use of org.directwebremoting.extend.Reply in project ma-core-public by infiniteautomation.

the class BaseCallMarshaller method marshallOutbound.

/* (non-Javadoc)
     * @see org.directwebremoting.Marshaller#marshallOutbound(org.directwebremoting.Replies, javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
     */
public void marshallOutbound(Replies replies, HttpServletRequest request, HttpServletResponse response) throws IOException {
    // Get the output stream and setup the mimetype
    response.setContentType(getOutboundMimeType());
    PrintWriter out;
    if (log.isDebugEnabled()) {
        // This might be considered evil - altering the program flow
        // depending on the log status, however DebuggingPrintWriter is
        // very thin and only about logging
        out = new DebuggingPrintWriter("", response.getWriter());
    } else {
        out = response.getWriter();
    }
    // The conduit to pass on reverse ajax scripts
    ScriptConduit conduit = new CallScriptConduit(out);
    // Setup a debugging prefix
    if (out instanceof DebuggingPrintWriter) {
        DebuggingPrintWriter dpw = (DebuggingPrintWriter) out;
        dpw.setPrefix("out(" + conduit.hashCode() + "): ");
    }
    // Send the script prefix (if any)
    sendOutboundScriptPrefix(out, replies.getBatchId());
    // From the call to addScriptConduit() there could be 2 threads writing
    // to 'out' so we synchronize on 'out' to make sure there are no
    // clashes
    RealScriptSession scriptSession = (RealScriptSession) WebContextFactory.get().getScriptSession();
    out.println(ProtocolConstants.SCRIPT_CALL_INSERT);
    scriptSession.writeScripts(conduit);
    out.println(ProtocolConstants.SCRIPT_CALL_REPLY);
    String batchId = replies.getBatchId();
    for (int i = 0; i < replies.getReplyCount(); i++) {
        Reply reply = replies.getReply(i);
        String callId = reply.getCallId();
        try {
            // The existance of a throwable indicates that something went wrong
            if (reply.getThrowable() != null) {
                Throwable ex = reply.getThrowable();
                EnginePrivate.remoteHandleException(conduit, batchId, callId, ex);
                log.warn("--Erroring: batchId[" + batchId + "] message[" + ex.toString() + ']');
            } else {
                Object data = reply.getReply();
                EnginePrivate.remoteHandleCallback(conduit, batchId, callId, data);
            }
        } catch (IOException ex) {
            // We're a bit stuck we died half way through writing so
            // we can't be sure the browser can react to the failure.
            // Since we can no longer do output we just log and end
            log.error("--Output Error: batchId[" + batchId + "] message[" + ex.toString() + ']', ex);
        } catch (MarshallException ex) {
            EnginePrivate.remoteHandleMarshallException(conduit, batchId, callId, ex);
            log.warn("--MarshallException: batchId=" + batchId + " class=" + ex.getConversionType().getName(), ex);
        } catch (Exception ex) {
            // This is a bit of a "this can't happen" case so I am a bit
            // nervous about sending the exception to the client, but we
            // want to avoid silently dying so we need to do something.
            EnginePrivate.remoteHandleException(conduit, batchId, callId, ex);
            log.error("--MarshallException: batchId=" + batchId + " message=" + ex.toString());
        }
    }
    sendOutboundScriptSuffix(out, replies.getBatchId());
}

Example 3 with Reply

use of org.directwebremoting.extend.Reply in project ma-core-public by infiniteautomation.

the class DefaultRemoter method execute.

/* (non-Javadoc)
     * @see org.directwebremoting.Remoter#execute(org.directwebremoting.Calls)
     */
public Replies execute(Calls calls) {
    Replies replies = new Replies(calls.getBatchId());
    int callCount = calls.getCallCount();
    if (callCount > maxCallCount) {
        log.error("Call count for batch exceeds maxCallCount. Add an init-param of maxCallCount to increase this limit");
        throw new SecurityException("Call count for batch is too high");
    }
    for (int callNum = 0; callNum < callCount; callNum++) {
        Call call = calls.getCall(callNum);
        Reply reply = execute(call);
        replies.addReply(reply);
    }
    return replies;
}

Example 4 with Reply

use of org.directwebremoting.extend.Reply in project ma-core-public by infiniteautomation.

the class DefaultRemoter method execute.

/**
 * Execute a single call object
 * @param call The call to execute
 * @return A Reply to the Call
 */
public Reply execute(Call call) {
    try {
        Method method = call.getMethod();
        if (method == null || call.getException() != null) {
            return new Reply(call.getCallId(), null, call.getException());
        }
        // Get a list of the available matching methods with the coerced
        // parameters that we will use to call it if we choose to use that
        // method.
        Creator creator = creatorManager.getCreator(call.getScriptName());
        // We don't need to check accessControl.getReasonToNotExecute()
        // because the checks are made by the doExec method, but we do check
        // if we can display it
        accessControl.assertExecutionIsPossible(creator, call.getScriptName(), method);
        // Get ourselves an object to execute a method on unless the
        // method is static
        Object object = null;
        String scope = creator.getScope();
        boolean create = false;
        if (!Modifier.isStatic(method.getModifiers())) {
            WebContext webcx = WebContextFactory.get();
            // Check the various scopes to see if it is there
            if (scope.equals(Creator.APPLICATION)) {
                object = webcx.getServletContext().getAttribute(call.getScriptName());
            } else if (scope.equals(Creator.SESSION)) {
                object = webcx.getSession().getAttribute(call.getScriptName());
            } else if (scope.equals(Creator.SCRIPT)) {
                object = webcx.getScriptSession().getAttribute(call.getScriptName());
            } else if (scope.equals(Creator.REQUEST)) {
                object = webcx.getHttpServletRequest().getAttribute(call.getScriptName());
            }
            // If we don't have an object the call the creator
            if (object == null) {
                create = true;
                object = creator.getInstance();
            }
            // Remember it for next time
            if (create) {
                if (scope.equals(Creator.APPLICATION)) {
                    // This might also be done at application startup by
                    // DefaultCreatorManager.addCreator(String, Creator)
                    webcx.getServletContext().setAttribute(call.getScriptName(), object);
                } else if (scope.equals(Creator.SESSION)) {
                    webcx.getSession().setAttribute(call.getScriptName(), object);
                } else if (scope.equals(Creator.SCRIPT)) {
                    webcx.getScriptSession().setAttribute(call.getScriptName(), object);
                } else if (scope.equals(Creator.REQUEST)) {
                    webcx.getHttpServletRequest().setAttribute(call.getScriptName(), object);
                }
            // Creator.PAGE scope means we create one every time anyway
            }
        }
        // Some debug
        log.info("Exec: " + call.getScriptName() + "." + call.getMethodName() + "()");
        if (log.isDebugEnabled()) {
            StringBuffer buffer = new StringBuffer();
            if (create) {
                buffer.append("--Object created, ");
                if (!scope.equals(Creator.PAGE)) {
                    buffer.append(" stored in ");
                    buffer.append(scope);
                } else {
                    buffer.append(" not stored");
                }
            } else {
                buffer.append("--Object found in ");
                buffer.append(scope);
            }
            buffer.append(". ");
            // It would be good to debug the params but it's not easy
            // buffer.append("Call params (");
            // for (int j = 0; j < inctx.getParameterCount(callNum); j++)
            // {
            // if (j != 0)
            // {
            // buffer.append(", ");
            // }
            // InboundVariable param = inctx.getParameter(callNum, j);
            // buffer.append(param.toString());
            // }
            // buffer.append(") ");
            buffer.append("id=");
            buffer.append(call.getCallId());
            log.debug(buffer.toString());
        }
        // Execute the filter chain method.toString()
        final Iterator it = ajaxFilterManager.getAjaxFilters(call.getScriptName());
        AjaxFilterChain chain = new AjaxFilterChain() {

            public Object doFilter(Object obj, Method meth, Object[] p) throws Exception {
                AjaxFilter next = (AjaxFilter) it.next();
                return next.doFilter(obj, meth, p, this);
            }
        };
        Object reply = chain.doFilter(object, method, call.getParameters());
        return new Reply(call.getCallId(), reply);
    } catch (InvocationTargetException ex) {
        // Allow Jetty RequestRetry exception to propogate to container
        Continuation.rethrowIfContinuation(ex);
        log.warn("Method execution failed: ", ex.getTargetException());
        return new Reply(call.getCallId(), null, ex.getTargetException());
    } catch (Exception ex) {
        // Allow Jetty RequestRetry exception to propogate to container
        Continuation.rethrowIfContinuation(ex);
        log.warn("Method execution failed: ", ex);
        return new Reply(call.getCallId(), null, ex);
    }
}