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... also in the first phases of the bootstrap procedure.
Co-authored-by: Oliver Reiche <oliver.reiche@huawei.com>
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When constructing the build configuration for the bootstrap
build is just, start with the value of the environment variable
JUST_BUILD_CONF, if set, instead of the empty object. While there,
also propagate SOURCE_DATE_EPOCH from the environment to the build
configuration.
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Co-authored-by: Oliver Reiche <oliver.reiche@huawei.com>
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... if none is specified on command line or in the config.
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This commit also introduces an incompatible change, since it modifies the way
how files are stored in the just cache directory. This modification reduces the
number of files per directory and only introduces a maximum number new
directories to avoid possible performance bottlenecks.
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This change is introduced to be prepared for future changes such as garbage
collection. It is an incompatible change compared to earlier just versions
since it modifies the local path to the just cache directory, where among
others the CASes, action cache, target-level cache are located.
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Before this change, TargetResults that appear inside of
other TargetResults (typically via value nodes) were
serialised via the top-level serialisation function for
TargetResults. While technically correct, it is rather
inefficient as identical expressions from outer and inner
TargetResults are not properly deduplicated and a deeply
nested data structure is maintained.
With this change, expressions of inner TargetResults are
serialised in the context of outer TargetResults, resulting
in a flat list of all transitively contained expressions
with proper deduplication applied.
As this serialisation of TargetResult is used in
target-level cache entries, the new format is a breaking
change to existing entries. Therefore, after switching to
the new serialisation format introduced by this commit,
users are required to clean their target-level cache.
This also reverts commit d22adef666d704680ee74b35a46d530f6b6d5f15,
"Recursively scan provided results for known artifacts".
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This recursive scan of the provided results map of a target-cache entry for
known artifacts is required since the serialization format of target results
currently does not produce a single flat artifact list, but keeps the result
entry structure with a nested list of artifacts. Once the serialization format
of target results is changed in a way that a flat list of artifacts is
produced, this recursive scan is not required anymore and can be reverted.
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This enforces the explicit specification, which object type, either file or
tree, should be used to create an artifact digest. This also avoids subtile
errors at locations as in the previous commit, where files as well as trees are
supposed to be handled, but digest creation mistakenly defaults to file object
type.
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The initial assumption before introducing the native remote execution protocol
was that only blobs were transmitted over the wire and put in a blob store.
With the native remote execution protocol, also trees can be transmitted over
the wire and they are put in a different store than blobs. Different hashing
functions are used for blobs and trees and need to be calculated accordingly
for data to be put in the correct store. This distinction of blobs and trees is
now implemented. Additionally, a warning is added that checks equality
between the requested digest and the digest computed by the received
content. This check makes sense to detect, e.g., corrupted messages,
unexpected transmission termination, or remote server failure.
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Only if the environment variable DEBUG is set, fall back to sequentially
executing the graph generated by the bootstrap version of just.
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Signed-off-by: Goetz Brasche <goetz.brasche@huawei.com>
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... if the object does not even exist. In that case, a trace
message is produced and the caller is responsible for
reporting errors.
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