Add new pipeline transformer definitions - Add new pipeline transformer definitions - Alfresco - Alfresco Transform Service - Alfresco/Alfresco-Transform-Service/3.0/Alfresco-Transform-Service/Alfresco-Transform-Service/Configure/Add-T-Engines-to-T-Router/Add-new-pipeline-transformer-definitions - 3.0

Additional transformers can be defined in new JSON or YAML files and specified through environment variables with the TRANSFORMER_ROUTES_ADDITIONAL_ prefix:

export TRANSFORMER_ROUTES_ADDITIONAL_<name>="/path/to/the/additional/route/file.json"

differentiates multiple additional route files.

Here's example content of an additional pipeline in JSON format (same as the transformer-pipelines.json) provided. The environment variable TRANSFORMER_ROUTES_ADDITIONAL_OFFICE_TO_IMAGE="/additional.json", and the additional.json file could be:

{
    "transformers": [
        {
            "transformerName": "pdfToImageViaPng",
            "transformerPipeline": [
                {
                    "transformerName": "pdfrenderer",
                    "targetMediaType": "image/png"
                },
                {
                    "transformerName": "imagemagick"
                }
            ],
            "supportedSourceAndTargetList": [],
            "transformOptions": [
                "pdfRendererOptions",
                "imageMagickOptions"
            ]
        }
    ]
}

The custom pipeline definition files must be mounted on the T-Router container file-system.

Multiple additional pipeline files can be specified. Ideally, for each new custom engine a separate custom pipeline file should be added.

In case of clashes between transformers and their supported transforms:

• If two transformers support the same source and target media type, the transformer with the higher priority is used (i.e. a lower numeric value is considered higher priority).

• If the same transform is specified in multiple transformers with the same transform options, priority and maxSourceFileSize, then one of the transformers will be chosen at random.