class CacheWriter extends AnyRef
Writes UnwrittenLayers to the cache.
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def
getCachedLayer(layerSize: Long, layerDigest: DescriptorDigest): CachedLayer
Gets the layer that was cached by writing the contents to a file in the cache.
Gets the layer that was cached by writing the contents to a file in the cache. The returned
CachedLayershould be added to the cache metadata.- layerSize
the size of the layer
- layerDigest
the digest of the layer to retrieve
- returns
a
CachedLayerfrom a layer digest and theCountingOutputStreamthe layer BLOB was written to
- Exceptions thrown
IOExceptionif closing the output stream or getting the layer diff ID fails
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def
getLayerOutputStream(layerDigest: DescriptorDigest): CountingOutputStream
- layerDigest
the written layer's digest.
- returns
the
CountingOutputStreamto write to to cache a layer with the specified compressed digest.
- Exceptions thrown
IOExceptionif writing to the layer file's output stream fails.
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def
writeLayer(reproducibleLayerBuilder: ReproducibleLayerBuilder): CachedLayerWithMetadata
Builds an
UnwrittenLayerfrom aReproducibleLayerBuilderand compresses and writes theUnwrittenLayer's uncompressed layer content BLOB to cache.Builds an
UnwrittenLayerfrom aReproducibleLayerBuilderand compresses and writes theUnwrittenLayer's uncompressed layer content BLOB to cache.- reproducibleLayerBuilder
the layer builder
- returns
the cached layer with accompanying
LayerMetadata
- Exceptions thrown
IOExceptionif writing the layer to file fails