Coverage Report - org.mule.transport.http.PollingHttpMessageReceiver
 
Classes in this File Line Coverage Branch Coverage Complexity
PollingHttpMessageReceiver
0%
0/43
0%
0/22
0
 
 1  
 /*
 2  
  * Copyright (c) MuleSoft, Inc.  All rights reserved.  http://www.mulesoft.com
 3  
  * The software in this package is published under the terms of the CPAL v1.0
 4  
  * license, a copy of which has been included with this distribution in the
 5  
  * LICENSE.txt file.
 6  
  */
 7  
 package org.mule.transport.http;
 8  
 
 9  
 import org.mule.DefaultMuleEvent;
 10  
 import org.mule.DefaultMuleMessage;
 11  
 import org.mule.MessageExchangePattern;
 12  
 import org.mule.api.MuleContext;
 13  
 import org.mule.api.MuleEvent;
 14  
 import org.mule.api.MuleMessage;
 15  
 import org.mule.api.MuleSession;
 16  
 import org.mule.api.construct.FlowConstruct;
 17  
 import org.mule.api.endpoint.EndpointBuilder;
 18  
 import org.mule.api.endpoint.InboundEndpoint;
 19  
 import org.mule.api.endpoint.OutboundEndpoint;
 20  
 import org.mule.api.lifecycle.CreateException;
 21  
 import org.mule.api.processor.MessageProcessor;
 22  
 import org.mule.api.transport.Connector;
 23  
 import org.mule.endpoint.EndpointURIEndpointBuilder;
 24  
 import org.mule.session.DefaultMuleSession;
 25  
 import org.mule.transport.AbstractPollingMessageReceiver;
 26  
 import org.mule.transport.http.i18n.HttpMessages;
 27  
 import org.mule.util.MapUtils;
 28  
 import org.mule.util.StringUtils;
 29  
 
 30  
 import java.util.Collections;
 31  
 
 32  
 /**
 33  
  * Will poll an http URL and use the response as the input for a service request.
 34  
  */
 35  
 public class PollingHttpMessageReceiver extends AbstractPollingMessageReceiver
 36  
 {
 37  0
     protected String etag = null;
 38  
     private boolean checkEtag;
 39  
     private boolean discardEmptyContent;
 40  
     //The outbound endpoint to poll
 41  
     private OutboundEndpoint outboundEndpoint;
 42  
 
 43  
     public PollingHttpMessageReceiver(Connector connector,
 44  
                                       FlowConstruct flowConstruct,
 45  
                                       final InboundEndpoint endpoint) throws CreateException
 46  
     {
 47  
 
 48  0
         super(connector, flowConstruct, endpoint);
 49  
 
 50  
         HttpPollingConnector pollingConnector;
 51  
 
 52  0
         if (connector instanceof HttpPollingConnector)
 53  
         {
 54  0
             pollingConnector = (HttpPollingConnector) connector;
 55  
         }
 56  
         else
 57  
         {
 58  0
             throw new CreateException(HttpMessages.pollingReciverCannotbeUsed(), this);
 59  
         }
 60  
 
 61  0
         long pollingFrequency = MapUtils.getLongValue(endpoint.getProperties(), "pollingFrequency",
 62  
                 pollingConnector.getPollingFrequency());
 63  0
         if (pollingFrequency > 0)
 64  
         {
 65  0
             this.setFrequency(pollingFrequency);
 66  
         }
 67  
 
 68  0
         checkEtag = MapUtils.getBooleanValue(endpoint.getProperties(), "checkEtag", pollingConnector.isCheckEtag());
 69  0
         discardEmptyContent = MapUtils.getBooleanValue(endpoint.getProperties(), "discardEmptyContent", pollingConnector.isDiscardEmptyContent());
 70  0
     }
 71  
 
 72  
     @Override
 73  
     protected void doDispose()
 74  
     {
 75  
         // nothing to do
 76  0
     }
 77  
 
 78  
     @Override
 79  
     protected void doConnect() throws Exception
 80  
     {
 81  
         // nothing to do
 82  0
     }
 83  
 
 84  
     @Override
 85  
     public void doDisconnect() throws Exception
 86  
     {
 87  
         // nothing to do
 88  0
     }
 89  
 
 90  
     @Override
 91  
     public void poll() throws Exception
 92  
     {
 93  0
         MuleContext muleContext = connector.getMuleContext();
 94  
 
 95  0
         if (outboundEndpoint == null)
 96  
         {
 97  
             // We need to create an outbound endpoint to do the polled request using
 98  
             // send() as thats the only way we can customize headers and use eTags
 99  0
             EndpointBuilder endpointBuilder = new EndpointURIEndpointBuilder(endpoint);
 100  
             // Must not use inbound endpoint processors
 101  0
             endpointBuilder.setMessageProcessors(Collections.<MessageProcessor>emptyList());
 102  0
             endpointBuilder.setResponseMessageProcessors(Collections.<MessageProcessor>emptyList());
 103  0
             endpointBuilder.setMessageProcessors(Collections.<MessageProcessor>emptyList());
 104  0
             endpointBuilder.setResponseMessageProcessors(Collections.<MessageProcessor>emptyList());
 105  0
             endpointBuilder.setExchangePattern(MessageExchangePattern.REQUEST_RESPONSE);
 106  
 
 107  0
             outboundEndpoint = muleContext.getEndpointFactory().getOutboundEndpoint(
 108  
                     endpointBuilder);
 109  
         }
 110  
 
 111  0
         MuleMessage request = new DefaultMuleMessage(StringUtils.EMPTY, outboundEndpoint.getProperties(), muleContext);
 112  0
         if (etag != null && checkEtag)
 113  
         {
 114  0
             request.setOutboundProperty(HttpConstants.HEADER_IF_NONE_MATCH, etag);
 115  
         }
 116  0
         request.setOutboundProperty(HttpConnector.HTTP_METHOD_PROPERTY, "GET");
 117  
 
 118  0
         MuleSession session = new DefaultMuleSession(flowConstruct, connector.getMuleContext());
 119  
 
 120  
 
 121  0
         MuleEvent event = new DefaultMuleEvent(request, outboundEndpoint, session);
 122  
 
 123  0
         MuleEvent result = outboundEndpoint.process(event);
 124  0
         MuleMessage message = null;
 125  0
         if (result != null)
 126  
         {
 127  0
             message = result.getMessage();
 128  
         }
 129  
 
 130  0
         final int contentLength = message.getOutboundProperty(HttpConstants.HEADER_CONTENT_LENGTH, -1);
 131  0
         if (contentLength == 0 && discardEmptyContent)
 132  
         {
 133  0
             if (logger.isDebugEnabled())
 134  
             {
 135  0
                 logger.debug("Received empty message and ignoring from: " + endpoint.getEndpointURI());
 136  
             }
 137  0
             return;
 138  
         }
 139  0
         int status = message.getOutboundProperty(HttpConnector.HTTP_STATUS_PROPERTY, 0);
 140  0
         etag = message.getOutboundProperty(HttpConstants.HEADER_ETAG);
 141  
 
 142  0
         if ((status != HttpConstants.SC_NOT_MODIFIED || !checkEtag))
 143  
         {
 144  0
             routeMessage(message);
 145  
         }
 146  0
     }
 147  
 }