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DPS description :

 

Deployed Toplogies:

Two topologies are deployed :

  • XSLT topology: used to transform an XML file based on XSL tranformation file.
  • Image conversion topology: used to convert TIFF type images into JP2 type images.

DPS usage tutorial :

This tutorial covers the usage of DPS-Rest APIs:

1. An admin should grant the user of the topology the ability to interact with a specific topology by granting this user read and write permissions on the requested topology. In the following command we are granting user: topology_user_test the permission to interact with ic topology.

 

curl -i -X POST --user admin:admin -H "Content-Type: application/x-www-form-urlencoded" -d 'username=topology_user_test' http://iks-kbase.synat.pcss.pl:9090/dps/topologies/ic_topology/permit

 

2. Submit a task to dps; Two types of DPS task could be sent :

  • A task to convert/transform list of files .
  • A task to convert/transform files inside a dtaset.

Make sure that the required fields are included in your task or a method not allowed exception will be thrown and the task will not be sent!.

A.    For IC topology:

  • Submit a list of files:

     The required fields are:

     FILE_URLS as a data entry. And the following parameters: 
    • MIME_TYPE : The mime type of the image which will be converted.
    • OUTPUT_MIME_TYPE : The expected mime type of the output image.
    • TASK_SUBMITTER_NAME : The user which will receive permissions to the converted image.

      curl -X POST --user topology_user_test:topology_user_test -H "Content-Type: application/json" -d '{"inputData":{"entry":[{"key":"FILE_URLS","value":"http://cloud.europeana.eu/api/records/CLOUD_ID/representations/REPRSENTATION_NAME/versions/VERSION/files/FILENAME1 http://cloud.europeana.eu/api/records/CLOUD_ID/representations/REPRSENTATION_NAME/versions/VERSION/files/FILENAME2 http://cloud.europeana.eu/api/records/CLOUD_ID/representations/REPRSENTATION_NAME/versions/VERSION/files/FILENAME3 "}]},"parameters":{"entry":[{"key":"TASK_SUBMITTER_NAME","value":"topology_user_test"},{"key":"OUTPUT_MIME_TYPE","value":"image/jp2"},{"key":"MIME_TYPE","value":"image/tiff"}]}}' -i http://cloud.europeana.eu/services/image_convert/tasks


     

  • Submit a list of datasets:

     DATASET_URLS as a data entry. And the following parameters: 

    • MIME_TYPE : The mime type of the image which will be converted.
    • OUTPUT_MIME_TYPE : The expected mime type of the output image.
    • TASK_SUBMITTER_NAME : The user which will receive permissions to the converted image.
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