Metadata extractor availability should be checked before extraction

datalad / datalad-metalad

Next generation metadata handling

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Metadata extractor availability should be checked before extraction #174

Open mih opened 5 years ago

mih commented 5 years ago

ATM extraction will error out whenever deep in the process a configured extractor is found to be unavailable. This should be checked upfront and maybe indicated with some flag whether it is OK to proceed nevertheless. This could be combined with the switches for incremental aggregation.

mih commented 5 years ago

https://github.com/datalad/datalad-revolution/pull/84 does this, and uses the common error handling to decide when to proceed.