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...and move this functionality to bazel_msg_factory_test, where it is actually used.
For local_cas.test the regular hashing is used, since blob_creator is redundant there.
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... while keeping our .clang-format file.
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... so that linting information gets propagated properly.
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! => not; && => and, || => or
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...and replace it with instances created early via a builder
pattern.
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...and replace it with passed instances created early via a builder
pattern.
Tests are also updated accordingly.
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As the classes describe the config type, their static creators can
have generic names, which reduces unnecessary verbosity.
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...since it is used in tests only.
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Use a builder pattern for creation and validation, in a manner that
allows also other authentication methods to be added in the future
besides the current TLS/SSL.
The main Auth instances are built early and then passed by not_null
const pointers, to avoid passing temporaries, replacing the previous
Auth::TLS instances passed by simple nullable const pointers. Where
needed, these passed Auth instances are also stored, by const ref.
Tests also build Auth instances as needed, either with the default
'no certification' or from the test environment arguments.
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...to enable validation of received blobs.
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Update logic populating containers to use the new method which
is aware of the maximum transfer limit.
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...to reduce the "price" of copying.
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...where the template parameter is the type of a digest.
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...instead of the vector containing the digests of the uploaded
blobs. The returned vector was never inspected by the callers, except
for its size.
The tests have been accordingly amended.
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...that std::filesystem::* calls produce. This is because existence
and type checks use almost exclusively std::filesystem::status,
which follows symbolic links, when being called with path arguments.
Instead, one should instead use these methods with the value
returned by a call of std::filesystem::symlink_status.
This commit also streamlines the FileSystemManager tests, as well
as replace bare calls to std::filesystem with their FileSystemManager
counterparts (where suitable).
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This allows better separation and, in particular, repositories
needed only for tests do not have to be provided for building the
tools. This also better documents which dependencies are only needed
for testing.
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tests have been updated accordingly
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...both buildbarn and just execute do not allow a direct upload to the
action cache. Moreover, our tool does not support it, anyway, meaning
it was dead code.
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The improved GC implementation uses refactored storage
classes instead of directly accessing "unknown" file paths.
The required storage class refactoring is quite substantial
and outlined in the following paragraphs.
The module `buildtool/file_system` was extended by:
- `ObjectCAS`: a plain CAS implementation for
reading/writing blobs and computing digests for a given
`ObjectType`. Depending on that type, files written to the
file system may have different properties (e.g., the x-bit
set) or the digest may be computed differently (e.g., tree
digests in non-compatible mode).
A new module `buildtool/storage` was introduced containing:
- `LocalCAS`: provides a common interface for the "logical
CAS", which internally combines three `ObjectCAS`s, one
for each `ObjectType` (file, executable, tree).
- `LocalAC`: implements the action cache, which needs the
`LocalCAS` for storing cache values.
- `TargetCache`: implements the high-level target cache,
which also needs the `LocalCAS` for storing cache values.
- `LocalStorage`: combines the storage classes `LocalCAS`,
`LocalAC`, and `TargetCache`. Those are initialized with
settings from `StorageConfig`, such as the build root base
path or number of generations for the garbage collector.
`LocalStorage` is templated with a Boolean parameter
`kDoGlobalUplink`, which indicates that, on every
read/write access, the garbage collector should be used
for uplinking across all generations (global).
- `GarbageCollector`: responsible for garbage collection and
the global uplinking across all generations. To do so, it
employs instances of `LocalStorage` with `kDoGlobalUplink`
set to false, in order to avoid endless recursion. The
actual (local) uplinking within two single generations is
performed by the corresponding storage class (e.g.,
`TargetCache` implements uplinking of target cache entries
between two target cache generations etc.). Thereby, the
actual knowledge how data should be uplinked is
implemented by the instance that is responsible for
creating the data in the first place.
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... to bring their own remote-execution endpoint.
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... by keeping track of each blob being a file or executable
and storing it to the correct local physical CAS directory.
The new flag is merely a hint and only used by the local
execution API. Leaving it out will still correctly transfer
the blob but may cause unnecessary duplicates in file CAS.
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Compared to the previous commit, the action graphs for just
and its unit tests are unchanged.
- Git hash of action graph for ["",""]:
c6e75f17abd7ffaab6ff9bb725ad67ec0bf6c973
- Git hash of action graph for ["test/buildtool","TESTS"]:
8063dfb3dd7daa9ae01d95c177e14946f785c57e
Refactor:
- "local cflags" to "private-cflags"
- "local defines" to "private-defines"
- "link externals" to "private-ldflags"
- "deps" to "private-deps" for (test) binaries
- "proto" to "private-proto" for binaries
Improvements:
- consistent variable declaration order:
OS, ARCH, HOST_ARCH, TARGET_ARCH,
CC, CXX, CFLAGS, CXXFLAGS, ADD_CFLAGS, ADD_CXXFLAGS,
AR, ENV, PATH
- use fields close to their definition (in RULES)
- use common expression for binaries and test binaries
- split expression "flags" and "compiler"
... to separate ones for CC and CXX.
- rename "transition" to "deps-transition"
... to avoid conflicts with other transitions.
- support "defaults-transition" for CC expressions
Implement:
- "cflags" for libraries
- "private-cflags" for (test) binaries
- "private-defines" for test binaries
- "private-ldflags" for test binaries
- (public) "defines" for libraries
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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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Signed-off-by: Goetz Brasche <goetz.brasche@huawei.com>
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... otherwise actual blob size might exceed the maximum
transfer size of the CAS client. Therefore, we always have
to use the bytestream client if the size is unknown.
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... and cache endpoint address for rebuilding.
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