Examples of org.mule.api.transport.MessageReceiver

org.mule.api.transport.MessageReceiver
MessageReceiver is used to receive data from an external system. Typically an implementation of this interface will also implement the listener interface for the external system. For example to listen to a JMS destination the developer would also implement javax.jms.MessageListener. The endpoint (which creates the MessageReceiver) will then register the receiver with the JMS server. Where a listener interface is not availiable the derived MessageReceiver will implement the code necessary to receive data from the external system. For example, the file endpoint will poll a specified directory for its data.

            {
                return (MuleEvent) invocation.getArguments()[0];
            }
        });


        MessageReceiver messageReceiver = new TestMessageReceiver(connector, flowConstruct, endpoint);
        messageReceiver.setListener(listener);
        return messageReceiver;
    }

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    }


    public static MessageReceiver findReceiverByStemConsideringMatchingHost(Map<Object, MessageReceiver> receivers, String uri)
    {
        int match = -1;
        MessageReceiver receiver = null;
        final URI requestUri = URI.create(uri);


        for (final Map.Entry<Object, MessageReceiver> e : receivers.entrySet())
        {
            try
            {
                final URI receiverUri = URI.create((String) e.getKey());
                final MessageReceiver candidate = e.getValue();
                int pathLength = replaceNull(receiverUri.getPath()).length();


                if (uriStartsWith(requestUri, receiverUri) && match < pathLength)
                {
                    match = pathLength;

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    }


    public static MessageReceiver findReceiverByStem(Map<Object, MessageReceiver> receivers, String uriStr)
    {
        int match = 0;
        MessageReceiver receiver = null;
        for (Map.Entry<Object, MessageReceiver> e : receivers.entrySet())
        {
            String key = (String) e.getKey();
            MessageReceiver candidate = e.getValue();
            if (uriStr.startsWith(key) && match < key.length())
            {
                match = key.length();
                receiver = candidate;
            }

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    }


    @Override
    public MessageReceiver getReceiver(FlowConstruct flowConstruct, InboundEndpoint endpoint)
    {
        MessageReceiver receiver = super.getReceiver(flowConstruct, endpoint);
        //if no receiver was found looking for an exact match, use lookupReceiver to see if there's one with a matching host and same port and path
        if(receiver == null)
        {
            String key = (String) getReceiverKey(flowConstruct, endpoint);
            receiver = lookupReceiver(key);

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    public void testConnectorPollingFrequency() throws Exception
    {
        InboundEndpoint endpoint = getTestInboundEndpoint("mock");
        Service service = getTestService("apple", Apple.class);
        FtpConnector connector = (FtpConnector)getConnector();
        MessageReceiver receiver = connector.createReceiver(service, endpoint);
        assertEquals("Connector's polling frequency must not be ignored.", POLLING_FREQUENCY,
            ((FtpMessageReceiver)receiver).getFrequency());
    }

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        InboundEndpoint endpoint = getTestInboundEndpoint("mock", null, null, null, props, null);


        Service service = getTestService("apple", Apple.class);
        FtpConnector connector = (FtpConnector)getConnector();
        MessageReceiver receiver = connector.createReceiver(service, endpoint);
        assertEquals("Polling frequency endpoint override must not be ignored.", POLLING_FREQUENCY_OVERRIDE,
            ((FtpMessageReceiver)receiver).getFrequency());
    }

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        if (logger.isDebugEnabled())
        {
            logger.debug("Looking up vm receiver for address: " + endpointUri.toString());
        }


        MessageReceiver receiver;
        // If we have an exact match, use it
        receiver = receivers.get(endpointUri.getAddress());
        if (receiver != null)
        {
            if (logger.isDebugEnabled())
            {
                logger.debug("Found exact receiver match on endpointUri: " + endpointUri);
            }
            return receiver;
        }


        // otherwise check each one against a wildcard match
        for (Iterator iterator = receivers.values().iterator(); iterator.hasNext();)
        {
            receiver = (MessageReceiver)iterator.next();
            String filterAddress = receiver.getEndpointURI().getAddress();
            WildcardFilter filter = new WildcardFilter(filterAddress);
            if (filter.accept(endpointUri.getAddress()))
            {
                InboundEndpoint endpoint = receiver.getEndpoint();
                EndpointURI newEndpointURI = new MuleEndpointURI(endpointUri, filterAddress);
                receiver.setEndpoint(new DynamicURIInboundEndpoint(endpoint, newEndpointURI));


                if (logger.isDebugEnabled())
                {
                    logger.debug("Found receiver match on endpointUri: " + receiver.getEndpointURI()
                                 + " against " + endpointUri);
                }
                return receiver;
            }
        }

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        FileConnector connector = (FileConnector) getConnector();
        connector.setPollingFrequency(POLLING_FREQUENCY);


        InboundEndpoint endpoint = getTestInboundEndpoint("simple");
        Service service = getTestService();
        MessageReceiver receiver = connector.createReceiver(service, endpoint);
        assertEquals("Connector's polling frequency must not be ignored.", POLLING_FREQUENCY,
                ((FileMessageReceiver) receiver).getFrequency());
    }

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        // Endpoint wants String-typed properties
        endpoint.getProperties().put(FileConnector.PROPERTY_POLLING_FREQUENCY, String.valueOf(POLLING_FREQUENCY_OVERRIDE));


        Service service = getTestService();
        MessageReceiver receiver = connector.createReceiver(service, endpoint);
        assertEquals("Polling frequency endpoint override must not be ignored.", POLLING_FREQUENCY_OVERRIDE,
                ((FileMessageReceiver) receiver).getFrequency());
    }

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        if(StringUtils.EMPTY.equals(key))
        {
            key = httpServletRequest.getContextPath();
        }


        MessageReceiver receiver = (MessageReceiver)receivers.get(key);
        if (receiver == null)
        {
            receiver = HttpConnector.findReceiverByStem(receivers, key);
        }

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