Allow Data Import Handler to Archive Files After Processing
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Key: SOLR-2851
URL: https://issues.apache.org/jira/browse/SOLR-2851
Project: Solr
Issue Type: New Feature
Components: contrib - DataImportHandler
Affects Versions: 3.3
Reporter: Josh Harness
Priority: Minor
Fix For: 3.3
It would be great if, after processing flat files, DIH could place them in an
archive folder so that other system processes could compress them, delete them,
etc. We needed this feature, so I extended FileDataSource and decorated the
InputStreamReader such that when the close method is called, the file is moved
out of the way. This concrete implementation did exactly what I needed.
However, a more correct textbook approach would involve refactoring
FileListEntityProcessor such that it could take a configurable list of
post-processing action policy/command classes so that the user could provide
custom behavior that suits nearly any scenario (in a Chain of Responsibility
style pattern). Nonetheless, I wanted to provide the suggestion, a basic
one-off concrete implementation of archiving and start the discussion for where
things might head in the future.
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