06-ThumbnailGenerator.xml

<?xml version="1.0" encoding="UTF-8"?>
<blueprint xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="
       http://www.osgi.org/xmlns/blueprint/v1.0.0 http://www.osgi.org/xmlns/blueprint/v1.0.0/blueprint.xsd
       http://camel.apache.org/schema/blueprint http://camel.apache.org/schema/blueprint/camel-blueprint.xsd">

  <camelContext xmlns="http://camel.apache.org/schema/blueprint"
                xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
                xmlns:fedora="http://fedora.info/definitions/v4/repository#"
                xmlns:ebucore="http://www.ebu.ch/metadata/ontologies/ebucore/ebucore#">
    <route id="thumbnailRouter">
      <from uri="activemq:topic:fedora"/>
      <log message="GOT A MESSAGE: ${headers}"/>
      <filter>
        <simple>
          ${header[org.fcrepo.jms.eventType]} != 'http://fedora.info/definitions/v4/repository#NODE_REMOVED' &amp;&amp;
          ${header[org.fcrepo.jms.properties]} contains 'http://fedora.info/definitions/v4/repository#hasContent'
        </simple>
        <to uri="fcrepo:localhost:8080/fcrepo/rest"/>
        <setProperty propertyName="mimetype">
          <xpath>/rdf:RDF/rdf:Description/ebucore:hasMimeType/text()</xpath>
        </setProperty>
        <setProperty propertyName="parent">
          <xpath>/rdf:RDF/rdf:Description/fedora:hasParent/@rdf:resource</xpath>
        </setProperty>
        <filter>
          <simple>${property.mimetype} == 'image/jpeg'</simple>
          <log message="PARENT URI: ${property.parent}"/>
          <to uri="direct:generateThumbnail"/>
        </filter>
      </filter>
      <to uri="mock:result"/>
    </route>

    <route id="thumbnailGenerate">
      <from uri="direct:generateThumbnail"/>
          <to uri="fcrepo:localhost:8080/fcrepo/rest?metadata=false"/>
          <to uri="exec:convert?args=-thumbnail 100x100 - png:-"/>
          <to uri="direct:upsertThumbnail"/>
    </route>
      
    <route id="thumbnailUpsert">
      <from uri="direct:upsertThumbnail"/>
      <removeHeaders pattern="*"/>
      <setHeader headerName="CamelHttpMethod"><constant>PUT</constant></setHeader>
      <setHeader headerName="Content-Type"><constant>image/png</constant></setHeader>
      <recipientList><simple>fcrepo:${property.parent}/thumbnail</simple></recipientList>
    </route>
      
  </camelContext>

</blueprint>