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With the cache queries moved to job threads, `_initialize_state()` is
fairly lightweight and can be called earlier.
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This allows parallelization of cache queries.
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In non-strict mode cache query and pull are intertwined as we prefer
pulling the strict artifact to a cache lookup with the weak cache key.
This replaces `__update_artifact_state()` and `_pull()` with a combined
`_load_artifact()` method, which supports cache query with deferred
pulling. This provides correct behavior with the flexibility of split or
combined cache query and pull.
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Cache query can be fairly expensive as it checks the presence of all
blobs. Make this more explicit with a `query_cache()` method, instead of
implicitly querying the cache on the first call to `cached()`.
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Cache query can be fairly expensive as it checks the presence of all
artifact blobs. Make this more explicit with a `query_cache()` method,
instead of implicitly querying the cache on the first call to
`cached()`.
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The overhead of planning already cached elements and unneeded build-only
dependencies should be fairly small as unneeded jobs can still be
skipped. This optimization was also already disabled for non-strict
build plans with a remote artifact cache.
This change is necessary in preparation for parallelizing cache queries.
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The build queue requires the sources to be available for all elements
where `_cached_success()` returns `False`. This includes elements with a
cached failure.
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The assertions in `test_push_after_pull` are too strict. Pushing
dependencies to the second (empty) artifact server should not cause a
test failure.
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tests/frontend/push.py: Fix test fallout from recent changes
See merge request BuildStream/buildstream!2120
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This test was broken from the following commits:
98c807002cf3beb2110695083450a42fe8feefd0
9a124386a0ba8995e7cfd92e2c7d8fb23854f7e4
As of these commits, a Cli() instance requires it's directory to not
be created in advance, this was not caught in CI because we skip the
tests in CI where the runners lack proper subsecond mtime precision.
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Added core facing convenience logging functions
See merge request BuildStream/buildstream!2119
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This also adjusts the very strange tests in tests/internals/cascache.py
which use unittest's MagicMock interface to inspect what happened on
specific python methods instead of doing proper end-to-end testing.
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Use Messenger convinence functions instead.
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Use Messenger convinence functions instead.
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Use Messenger convinence functions instead.
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Several parts of the core have replicated codepaths for issuing info and
warn messages, remove the need for these functions by providing a convenience
layer in the Messenger object.
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This omits the type annotation for the message handler callback, as
this callback contains a keyword argument and can only be annotated
using `Protocol` type, which will only be available in python >= 3.8.
Added a FIXME comment so that we can recitify this when dropping
support for python 3.7
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Refactor shell build tree tests
See merge request BuildStream/buildstream!2116
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These tests were quite hard to follow what they were testing, and
did not cover the error cases thoroughly either. Instead, use some
test parametrization to implement more succinct tests which cover
the API surface more thoroughly.
Due to parametrization and discrete testing of various use cases,
this was going to be very expensive, so this patch introduces some
pytest module scope fixtures.
This allows multiple discrete tests to be run against a prebuilt
ArtifactShare with specific artifacts already built and available
in the share, so that this discrete testing is quite optimized.
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This allows our tests to use the ArtifactShare() object in
custom fixtures.
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This allows third party developers to use the Cli() object
in their own test fixtures.
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Instead of requiring every fixture to do it separately.
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In errors pertaining to failing to launch a shell with a buildtree.
Other related updates:
- _frontend/cli.py: Propagate machine readable error codes in `bst shell`
This command prefixes a reported error, so it rewraps the error into
an AppError, this needs to propagate the originating machine readable
error.
- tests/integration/shell.py, tests/integration/shellbuildtrees.py:
Updated to use new machine readable errors
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.gitlab-ci.yml: No need special runner for cached overnigth test
See merge request BuildStream/buildstream!2107
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_stream.py, _frontend/widget.py: Fix weird hack
See merge request BuildStream/buildstream!2117
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When stream is asked for a list of artifacts to show for
the purpose of `bst artifact show`, it was squashing the element
name with the artifact name before it gets displayed in the
frontend.
Instead, make the special casing in the frontend.
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Require all stack dependencies to be both build & runtime dependencies
Closes #1075
See merge request BuildStream/buildstream!2113
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Assert that errors are raised when stack dependencies are declared as
build-only or runtime-only dependencies.
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Stack elements cannot be build-only dependencies, as this would defeat
the purpose of using stack elements in order to directly build-depend on
them.
Stack element dependencies must all be built in order to build depend
on them, and as such we gain no build parallelism by allowing runtime-only
dependencies on stack elements. Declaring a runtime-only dependency on
a stack element as a whole might still be useful, but still requires the
entire stack to be built at the time we need that stack.
Instead, it is more useful to ensure that a stack element is a logical
group of all dependencies, including runtime dependencies, such that we
can guarantee cache key alignment with all stack dependencies.
This allows for stronger reliability in commands such as
`bst artifact checkout`, which can now reliably download and checkout
a fully built stack as a result, without any uncertainty about possible
runtime-only dependencies which might exist in the project where that
artifact was created.
This consequently closes #1075
This also fixes the following tests such that the no longer
require build-depends or runtime-depends to work in stack elements:
* tests/frontend/default_target.py: Was not necessary to check results of show,
these stacks were set to runtime-depends so that they would have the same
buildable state as their dependencies when shown.
* tests/format/dependencies.py: tests/frontend/pull.py, test/frontend/show.py,
tests/integration/compose.py:
These tests were using specific build/runtime dependencies in stacks, but
for no particular reason.
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Added a description about artifact names at the beginning of the
artifact commands section, along with a new glossary entry for
artifact names which refers to the description.
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* When documenting dependency types, add references to the shorthand
convenience lists `build-depends` and `runtime-depends`.
* When documenting the `type` attribute of dependencies, correct the
language referring to the convenience lists to specify `build-depends`
and `runtime-depends` instead of the incorrectly worded
`Build-Depends` and `Runtime-Depends`, which would be invalid keys.
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Refactor State object
See merge request BuildStream/buildstream!2115
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This improves overall documentation comments on the State object,
adds full pep484 type hinting, and renames the Task.set_render_cb()
to Task.set_task_changed_callback() to be more consistently named.
This also adds missing frontend facing API for the group changed
status notifications, even though the frontend does not currently
use these, it makes better sense to have them than to remove the
entire codepaths and callback lists.
This also reorders the classes in this file so that Task and TaskGroup
are both defined before State, this helps a bit with undefined references
for type hinting information.
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We created the State object in the core for the purpose of advertizing
state to the frontend, and the frontend can register callbacks and get
updates to state changes (implicit invocation in the frontend), state
always belongs to the core and the frontend can only read state.
When the frontend asks the core to do something, this should always
be done with an explicit function call, and preferably not via the
State object, as this confuses the use of state, which is only a readonly
state advertizing desk.
This was broken (implemented backwards) for job retries, instead we had
the frontend telling state "It has been requested that this job be retried !",
and then we had the core registering callbacks to that frontend request - this
direction of implicit invocation should not happen (the core should never
have to register callbacks on the State object at all in fact).
Summary of changes:
* _stream.py: Change _failure_retry(), which was for some reason
private albeit called from the frontend, to an explicit function
call named "retry_job()".
Instead of calling into the State object and causing core-side
callbacks to be triggered, later to be handled by the Scheduler,
implement the retry directly from the Stream, since this implementation
deals only with Queues and State, which already directly belong to
the Stream object, there is no reason to trouble the Scheduler
with this.
* _scheduler.py: Remove the callback handling the State "task retry"
event.
* _state.py: Remove the task retry callback chain completely.
* _frontend/app.py: Call stream.retry_job() instead of
stream.failure_retry(), now passing along the task's action name
rather than the task's ID.
This API now assumes that Stream.retry_job() can only be called on
a task which originates from a scheduler Queue, and expects to be
given the action name of the queue in which the given element has
failed and should be retried..
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The Task object is not internal to the State object, it is clearly
given to the frontend and passed around.
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CASCache improvements
See merge request BuildStream/buildstream!2112
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