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package org.mule.transport.http; |
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import org.mule.DefaultMuleEvent; |
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import org.mule.DefaultMuleMessage; |
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import org.mule.DefaultMuleSession; |
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import org.mule.api.MuleContext; |
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import org.mule.api.MuleEvent; |
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import org.mule.api.MuleMessage; |
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import org.mule.api.MuleSession; |
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import org.mule.api.endpoint.EndpointBuilder; |
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import org.mule.api.endpoint.InboundEndpoint; |
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import org.mule.api.endpoint.OutboundEndpoint; |
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import org.mule.api.lifecycle.CreateException; |
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import org.mule.api.service.Service; |
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import org.mule.api.transport.Connector; |
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import org.mule.endpoint.EndpointURIEndpointBuilder; |
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import org.mule.transport.AbstractPollingMessageReceiver; |
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import org.mule.transport.DefaultMessageAdapter; |
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import org.mule.transport.http.i18n.HttpMessages; |
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import org.mule.util.MapUtils; |
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import java.util.Collections; |
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import java.util.Map; |
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public class PollingHttpMessageReceiver extends AbstractPollingMessageReceiver |
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{ |
40 | 10 | protected String etag = null; |
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private boolean checkEtag; |
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private boolean discardEmptyContent; |
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private OutboundEndpoint outboundEndpoint; |
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public PollingHttpMessageReceiver(Connector connector, |
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Service service, |
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final InboundEndpoint endpoint) throws CreateException |
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{ |
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|
51 | 10 | super(connector, service, endpoint); |
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HttpPollingConnector pollingConnector; |
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|
55 | 10 | if (connector instanceof HttpPollingConnector) |
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{ |
57 | 10 | pollingConnector = (HttpPollingConnector) connector; |
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} |
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else |
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{ |
61 | 0 | throw new CreateException(HttpMessages.pollingReciverCannotbeUsed(), this); |
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} |
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|
64 | 10 | long pollingFrequency = MapUtils.getLongValue(endpoint.getProperties(), "pollingFrequency", |
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pollingConnector.getPollingFrequency()); |
66 | 10 | if (pollingFrequency > 0) |
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{ |
68 | 10 | this.setFrequency(pollingFrequency); |
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} |
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|
71 | 10 | checkEtag = MapUtils.getBooleanValue(endpoint.getProperties(), "checkEtag", pollingConnector.isCheckEtag()); |
72 | 10 | discardEmptyContent = MapUtils.getBooleanValue(endpoint.getProperties(), "discardEmptyContent", pollingConnector.isDiscardEmptyContent()); |
73 | 10 | } |
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|
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protected void doDispose() |
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{ |
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78 | 20 | } |
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protected void doConnect() throws Exception |
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{ |
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83 | 10 | } |
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public void doDisconnect() throws Exception |
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{ |
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88 | 10 | } |
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public void poll() throws Exception |
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{ |
92 | 14 | MuleMessage req = new DefaultMuleMessage(new DefaultMessageAdapter("")); |
93 | 14 | if (etag != null && checkEtag) |
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{ |
95 | 0 | Map customHeaders = Collections.singletonMap(HttpConstants.HEADER_IF_NONE_MATCH, etag); |
96 | 0 | req.setProperty(HttpConnector.HTTP_CUSTOM_HEADERS_MAP_PROPERTY, customHeaders); |
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} |
98 | 14 | req.setProperty(HttpConnector.HTTP_METHOD_PROPERTY, "GET"); |
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|
100 | 14 | MuleSession session = new DefaultMuleSession(service, connector.getMuleContext()); |
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|
102 | 14 | if (outboundEndpoint == null) |
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{ |
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106 | 10 | MuleContext muleContext = endpoint.getMuleContext(); |
107 | 10 | EndpointBuilder endpointBuilder = new EndpointURIEndpointBuilder(endpoint, muleContext); |
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109 | 10 | endpointBuilder.setTransformers(Collections.EMPTY_LIST); |
110 | 10 | outboundEndpoint = muleContext.getRegistry().lookupEndpointFactory().getOutboundEndpoint( |
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endpointBuilder); |
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} |
113 | 14 | MuleEvent event = new DefaultMuleEvent(req, outboundEndpoint, session, true); |
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|
115 | 14 | MuleMessage message = connector.send(outboundEndpoint, event); |
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|
117 | 14 | if (message.getIntProperty(HttpConstants.HEADER_CONTENT_LENGTH, 0) == 0 && discardEmptyContent) |
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{ |
119 | 0 | if (logger.isDebugEnabled()) |
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{ |
121 | 0 | logger.debug("Received empty message and ignoring from: " + endpoint.getEndpointURI()); |
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} |
123 | 0 | return; |
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} |
125 | 14 | int status = message.getIntProperty(HttpConnector.HTTP_STATUS_PROPERTY, 0); |
126 | 14 | etag = message.getStringProperty(HttpConstants.HEADER_ETAG, null); |
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|
128 | 14 | if ((status != 304 || !checkEtag)) |
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{ |
130 | 14 | routeMessage(message, endpoint.isSynchronous()); |
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} |
132 | 14 | } |
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} |