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This makes custom artifacts much less error-prone to use.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This avoids disabling the artifact when using the individual cancel method. Unfortunately this makes the method blocking.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This cancels all current pending cures without closing the cache.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This enables a specific artifact to be targeted for cancellation.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This is cleaner than checking cpu count during cure, it is impossible to avoid impurity in both situations but this is configurable.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This is not possible to use directly, so remove it from the public API.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This enables transparently degradable tests to be forced on in environments known to support them.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This does not test package container, so should transparently cope with Landlock LSM being unavailable.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This is quite error-prone and causes cache inconsistency similar to the store inconsistency seen on nix when a similar condition happens. Keep this behind a flag in case it is ever beneficial.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This is cleaner for extending the API.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This package solves a very specific stubbing use case, in a less than elegant manner.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This package is not container-specific.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This package is not container specific, and widely used across the project.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This is currently only used by execArtifact. A later patch will add additional logging facilities.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This should hopefully provide good separation between the artifact curing backend implementation and the (still work in progress) language. Making the IR parseable also guarantees uniqueness of the representation.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This was taking way too long for early failures.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This also rearranges the ident ir to be more predictable, and avoids an obvious and somewhat easy to get into inconsistent state.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This alleviates scheduler overhead when curing many artifacts.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This uses the new measured reader provided by Cache. This should make httpArtifact zero-copy.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This will be fully implemented in httpArtifact in a future commit.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This avoids blocking while not in Cure method of the implementation.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This enables deduplication by value as implemented in execArtifact.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This significantly simplifies error reporting for caller.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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Any fine-grained file-based locking here significantly hurts performance and is not part of the use case of the package. This change guarantees exclusive access to prevent inconsistent state on the filesystem.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This significantly improves scrubbing performance. Since the cache directory structure is friendly to simultaneous access, this is possible without synchronisation.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This eliminates duplicate identifier computations. The new implementation also significantly reduces allocations while computing identifier for a large dependency tree.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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These are generally for generating configuration files or build scripts, naming them is quite useful.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This removes the left over embedded contexts.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This imposes a hard upper limit to concurrency during dependency satisfaction and moves all dependency-related code out of individual implementations of Artifact. This change also includes ctx and msg as part of Cache.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This allows tar to take a single-file directory Artifact as input.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This improves efficiency for cache hits.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This runs a program in a container environment. Artifacts can be made available to the container, they are cured concurrently and mounted in order.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This cleans up the function signature and makes backwards compatible API changes possible.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This checks that scrub did not condemn any entry without reporting it.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This change adds a method to check on-disk cache consistency and destroy inconsistent entries as they are encountered. This primarily helps verify artifact implementation correctness, but can also repair a cache that got into an inconsistent state from curing a misbehaving artifact, without having to destroy the entire cache.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This makes the checksum consistent with the final resting state of artifact directories without incurring the cost of an extra pair of chown syscalls.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This allows for more flexibility during implementation. The use case that required this was for expanding single directory tarballs.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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The previous implementation exposes arbitrary user input to the cache as an identifier, which is highly error-prone and can cause the cache to enter an inconsistent state if the user is not careful. This change replaces the implementation to compute identifier late, using url string as params.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This moves all cache I/O code to Cache. Artifact now only contains methods for constructing their actual contents.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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These are much easier to handle than hard links and should be just as transparent for this use case.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This is useful for unpacking tarballs downloaded from the internet.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This must be writable to enable renaming, and the final result is conventionally read-only alongside the entire directory contents. This change overrides the permission bits as part of Store.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This works on any directories and should be robust against any bad state the artifact curing process might have failed at.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This wraps base64.URLEncoding.EncodeToString for cleaner call site.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This provides infrastructure for computing a deterministic identifier based on current artifact kind, opaque parameters data, and optional dependency kind and identifiers.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This is used for artifacts that cure into directories.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This is useful for downloading source tarballs from the internet.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This is useful for other tests that need a cache instance.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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The fact that Gob serialisation is deterministic is an implementation detail. This change replaces Gob with a simple custom format.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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This change contains primitives for validating and caching single-file artifacts.
Signed-off-by: Ophestra <cat@gensokyo.uk>
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