Examples of org.apache.tuscany.sca.invocation.Message

Package org.apache.tuscany.sca.invocation

Examples of org.apache.tuscany.sca.invocation.Message

org.apache.tuscany.sca.invocation.Message
Represents a request, response, or exception flowing through a wire @version $Rev $Date

        // is conversational. In this case we need to invent a 
        // conversation Id here to store the service against
        // and populate the thread context
        if (contextId == null) {
            contextId = UUID.randomUUID().toString();
            Message msgContext = ThreadMessageContext.getMessageContext();


            if (msgContext != null) {
                msgContext.getFrom().getReferenceParameters().setConversationID(contextId);
            }
        }    
        
        InstanceLifeCycleWrapper anInstanceWrapper = this.instanceLifecycleCollection.get(contextId);

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        this.wires = wires;
    init();
    }


    public void init() {
        Message msgContext = ThreadMessageContext.getMessageContext();
        wire = selectCallbackWire(msgContext);
        if (wire == null) {
            //FIXME: need better exception
            throw new RuntimeException("No callback binding found for " + msgContext.getTo().getURI());
        }
        resolvedEndpoint = getCallbackEndpoint(msgContext);
        convID = msgContext.getFrom().getReferenceParameters().getConversationID();
        callbackID = msgContext.getFrom().getReferenceParameters().getCallbackID();
    }

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            // Return a feed containing the entries in the collection
            Feed feed = null;
            if (supportsFeedEntries) {


                // The service implementation supports feed entries, invoke its getFeed operation
                Message requestMessage = messageFactory.createMessage();
                Message responseMessage;
                if (request.getQueryString() != null) {
                    requestMessage.setBody(new Object[] {request.getQueryString()});
                    responseMessage = queryInvoker.invoke(requestMessage);
                } else {
                    responseMessage = getFeedInvoker.invoke(requestMessage);
                }
                if (responseMessage.isFault()) {
                    throw new ServletException((Throwable)responseMessage.getBody());
                }
                feed = (Feed)responseMessage.getBody();
                
            } else {


                // The service implementation does not support feed entries,
                // invoke its getAll operation to get the data item collection, then create
                // feed entries from the items
                Message requestMessage = messageFactory.createMessage();
                Message responseMessage;
                if (request.getQueryString() != null) {
                    requestMessage.setBody(new Object[] {request.getQueryString()});
                    responseMessage = queryInvoker.invoke(requestMessage);
                } else {
                    responseMessage = getAllInvoker.invoke(requestMessage);
                }
                if (responseMessage.isFault()) {
                    throw new ServletException((Throwable)responseMessage.getBody());
                }
                Entry<Object, Object>[] collection =
                    (Entry<Object, Object>[])responseMessage.getBody();
                if (collection != null) {
                    
                    // Create the feed
                    feed = abderaFactory.newFeed();
                    
                    // Set the feed title
                    if (title != null) {
                        feed.setTitle(title);
                    } else {
                        feed.setTitle("Feed");
                    }
                    
                    // Add entries to the feed
                    for (Entry<Object, Object> entry: collection) {
                        org.apache.abdera.model.Entry feedEntry = feedEntry(entry, itemClassType, itemXMLType, mediator, abderaFactory);
                        feed.addEntry(feedEntry);
                    }
                }
            }
            if (feed != null) {
                
                // Write the Atom feed
                response.setContentType("application/atom+xml; charset=utf-8");
                try {
                         feed.getDocument().writeTo(response.getOutputStream());
                } catch (IOException ioe) {
                    throw new ServletException(ioe);
                }
            } else {
                response.sendError(HttpServletResponse.SC_NOT_FOUND);
            }
            
        } else if (path.startsWith("/")) {


            // Return a specific entry in the collection
            org.apache.abdera.model.Entry feedEntry;


            // Invoke the get operation on the service implementation
            Message requestMessage = messageFactory.createMessage();
            String id = path.substring(1);
            requestMessage.setBody(new Object[] {id});
            Message responseMessage = getInvoker.invoke(requestMessage);
            if (responseMessage.isFault()) {
                throw new ServletException((Throwable)responseMessage.getBody());
            }
            
            if (supportsFeedEntries) {
                // The service implementation returns a feed entry 
                feedEntry = responseMessage.getBody();
            } else {
                // The service implementation only returns a data item, create an entry
                // from it
                Entry<Object, Object> entry = new Entry<Object, Object>(id, responseMessage.getBody()); 
                feedEntry = feedEntry(entry, itemClassType, itemXMLType, mediator, abderaFactory);
            }


            // Write the Atom entry
            if (feedEntry != null) {

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                // Let the component implementation create it
                if (supportsFeedEntries) {
                    
                    // The service implementation supports feed entries, pass the entry to it
                    Message requestMessage = messageFactory.createMessage();
                    requestMessage.setBody(new Object[] {feedEntry});
                    Message responseMessage = postInvoker.invoke(requestMessage);
                    if (responseMessage.isFault()) {
                        throw new ServletException((Throwable)responseMessage.getBody());
                    }
                    createdFeedEntry = responseMessage.getBody();
                } else {
                    
                    // The service implementation does not support feed entries, pass the data item to it
                    Message requestMessage = messageFactory.createMessage();
                    Entry<Object, Object> entry = entry(feedEntry, itemClassType, itemXMLType, mediator);
                    requestMessage.setBody(new Object[] {entry.getKey(), entry.getData()});
                    Message responseMessage = postInvoker.invoke(requestMessage);
                    if (responseMessage.isFault()) {
                        throw new ServletException((Throwable)responseMessage.getBody());
                    }
                    entry.setKey(responseMessage.getBody());
                    createdFeedEntry = feedEntry(entry, itemClassType, itemXMLType, mediator, abderaFactory);
                }


            } else if (contentType != null) {


                // Create a new media entry


                // Get incoming headers
                String title = request.getHeader("Title");
                String slug = request.getHeader("Slug");


                // Let the component implementation create the media entry
                Message requestMessage = messageFactory.createMessage();
                requestMessage.setBody(new Object[] {title, slug, contentType, request.getInputStream()});
                Message responseMessage = postMediaInvoker.invoke(requestMessage);
                if (responseMessage.isFault()) {
                    throw new ServletException((Throwable)responseMessage.getBody());
                }
                createdFeedEntry = responseMessage.getBody();
            } else {
                response.sendError(HttpServletResponse.SC_UNSUPPORTED_MEDIA_TYPE);
            }


            // A new entry was created successfully

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                // Let the component implementation create it
                if (supportsFeedEntries) {
                    
                    // The service implementation supports feed entries, pass the entry to it
                    Message requestMessage = messageFactory.createMessage();
                    requestMessage.setBody(new Object[] {id, feedEntry});
                    Message responseMessage = putInvoker.invoke(requestMessage);
                    if (responseMessage.isFault()) {
                        Object body = responseMessage.getBody();
                        if (body.getClass().getName().endsWith(".NotFoundException")) {
                            response.sendError(HttpServletResponse.SC_NOT_FOUND);
                        } else {
                            throw new ServletException((Throwable)responseMessage.getBody());
                        }
                    }
                } else {
                    
                    // The service implementation does not support feed entries, pass the data item to it
                    Message requestMessage = messageFactory.createMessage();
                    Entry<Object, Object> entry = entry(feedEntry, itemClassType, itemXMLType, mediator);
                    requestMessage.setBody(new Object[] {entry.getKey(), entry.getData()});
                    Message responseMessage = putInvoker.invoke(requestMessage);
                    if (responseMessage.isFault()) {
                        Object body = responseMessage.getBody();
                        if (body.getClass().getName().endsWith(".NotFoundException")) {
                            response.sendError(HttpServletResponse.SC_NOT_FOUND);
                        } else {
                            throw new ServletException((Throwable)responseMessage.getBody());
                        }
                    }
                }


            } else if (contentType != null) {


                // Updated a media entry


                // Let the component implementation create the media entry
                Message requestMessage = messageFactory.createMessage();
                requestMessage.setBody(new Object[] {id, contentType, request.getInputStream()});
                Message responseMessage = putMediaInvoker.invoke(requestMessage);
                Object body = responseMessage.getBody();
                if (responseMessage.isFault()) {
                    if (body.getClass().getName().endsWith(".NotFoundException")) {
                        response.sendError(HttpServletResponse.SC_NOT_FOUND);
                    } else {
                        throw new ServletException((Throwable)responseMessage.getBody());
                    }
                }
            } else {
                response.sendError(HttpServletResponse.SC_UNSUPPORTED_MEDIA_TYPE);
            }

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        } else {
            id = "";
        }


        // Delete a specific entry from the collection
        Message requestMessage = messageFactory.createMessage();
        requestMessage.setBody(new Object[] {id});
        Message responseMessage = deleteInvoker.invoke(requestMessage);
        if (responseMessage.isFault()) {
            Object body = responseMessage.getBody();
            if (body.getClass().getName().endsWith(".NotFoundException")) {
                response.sendError(HttpServletResponse.SC_NOT_FOUND);
            } else {
                throw new ServletException((Throwable)responseMessage.getBody());
            }
        }
    }

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                }
            }
        }


        // create a message object and set the args as its body
        Message msg = messageFactory.createMessage();
        msg.setBody(args);
        msg.setOperation(op);
        
        //fill message with QoS context info 
        fillQoSContext(msg, inMC);
        
        // if reference parameters are needed, create a new "From" EPR to hold them
        EndpointReference from = null;
        ReferenceParameters parameters = null;
        if (callbackAddress != null ||
            callbackID != null ||
            conversationID != null) {
            from = new EndpointReferenceImpl(null);
            parameters = from.getReferenceParameters();
            msg.setFrom(from);
        }


        // set the reference parameters into the "From" EPR
        if (callbackAddress != null) {
            parameters.setCallbackReference(new EndpointReferenceImpl(callbackAddress));

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     * </pre>
     * @param context
     * @return the current work context for the thread; this must be restored after the invocation is made
     */
    public static Message setMessageContext(Message context) {
        Message old = CONTEXT.get();
        CONTEXT.set(context);
        return old;
    }

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            throw new RuntimeException(e);
        }
    }
    
    protected void invoke(InvocationChain chain, Object[] args) {
        Message msg = new MessageImpl();
        msg.setBody(args);
        chain.getHeadInvoker().invoke(msg);
    }

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        for ( Object contextObj : context) {
            if ( contextObj instanceof Operation ) {
                Operation op = (Operation)contextObj;
                System.out.println(" *TestReflPolicyHandler* " + op.getName() + " ** " + applicablePolicySet);
            } else if ( contextObj instanceof Message ) {
                Message msg = (Message)contextObj;
                System.out.println(" *TestRefPolicyHandler* " + msg.getOperation().getName() + " ** " + applicablePolicySet);
            }
        }
    }

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