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| author | Tristan Van Berkom <tristan.vanberkom@codethink.co.uk> | 2018-12-06 21:10:56 +0900 |
|---|---|---|
| committer | Tristan van Berkom <tristan.vanberkom@codethink.co.uk> | 2019-08-03 22:18:16 -0400 |
| commit | c969fc86b2331be29055c1ffbb28589e5f990a85 (patch) | |
| tree | 99675d74e7185753e3d5b80d5a15619ac47ed953 | |
| parent | d1316fa759d71d531bf6a1802e3827ccf4b5cc23 (diff) | |
| download | buildstream-c969fc86b2331be29055c1ffbb28589e5f990a85.tar.gz | |
source.py: Add new delegate method validate_cache()
This is guaranteed to be called only once for a given session once the
sources are known to be Consistency.CACHED, if source tracking is enabled
in the session for this source, then this will only be called if the
sources become cached after tracking completes.
| -rw-r--r-- | buildstream/source.py | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/buildstream/source.py b/buildstream/source.py index ed4dd9617..24e5b6c5b 100644 --- a/buildstream/source.py +++ b/buildstream/source.py @@ -87,6 +87,11 @@ these methods are mandatory to implement. submodules). For details on how to define a SourceFetcher, see :ref:`SourceFetcher <core_source_fetcher>`. +* :func:`Source.validate_cache() <buildstream.source.Source.validate_cache>` + + Perform any validations which require the sources to be cached. + + **Optional**: This is completely optional and will do nothing if left unimplemented. Accessing previous sources -------------------------- @@ -487,9 +492,22 @@ class Source(Plugin): *Since: 1.2* """ - return [] + def validate_cache(self): + """Implement any validations once we know the sources are cached + + This is guaranteed to be called only once for a given session + once the sources are known to be + :attr:`Consistency.CACHED <buildstream.types.Consistency.CACHED>`, + if source tracking is enabled in the session for this source, + then this will only be called if the sources become cached after + tracking completes. + + *Since: 1.4* + """ + pass + ############################################################# # Public Methods # ############################################################# @@ -649,6 +667,11 @@ class Source(Plugin): with context.silence(): self.__consistency = self.get_consistency() + # Give the Source an opportunity to validate the cached + # sources as soon as the Source becomes Consistency.CACHED. + if self.__consistency == Consistency.CACHED: + self.validate_cache() + # Return cached consistency # def _get_consistency(self): |