When multiple processes try to download the same chart version
concurrently (e.g., via Terraform), they can race to write the
destination file. On Windows, this results in 'Access Denied'
errors because the file cannot be renamed while another process
has a handle to the destination.
This commit introduces 'PlatformAtomicWriteFile' to the fileutil
package. On Unix-like systems, it simply delegates to AtomicWriteFile,
maintaining existing behavior. On Windows, it coordinates writes using
a lock file (.lock). It acquires the lock, then performs the atomic
write.
Crucially, this implementation ensures that existing files are
overwritten (rather than skipped). This ensures that if a chart is
republished with the same version, the local cache is correctly updated,
preventing stale data issues.
Fixes#31633
Signed-off-by: Orgad Shaneh <orgad.shaneh@audiocodes.com>
The repo package is internally versioned at v1. Repos were designed
to be versioned. This change moves it to a versioned directory the
same way other packages are now being handled.
Signed-off-by: Matt Farina <matt.farina@suse.com>
A few things are added here:
1. The cache is made to be more generic as a content based cache.
It could be used for other things such as plugins
2. Flags were added to specify the content cache locaiton rather
than rely on the repository cache. Keeping the 2 the same
hid bugs and errors.
3. Tests were added and updated to ensure the cache is used and
tested
Signed-off-by: Matt Farina <matt.farina@suse.com>
The previous cache was based on chart name and version. If 2 charts
with different content had the same name and version they would collide.
Helm did not trust the cache because of this and always downloaded
content. It was a short lived cache.
This commit introduces a content based cache which is based on the
content rather than file name. Charts with the same name but different
content are no longer an issue.
While the system assumes a file based interface, the cache system
is pluggable. In the future, it should return bytes for the content
instead of paths to it. That would requie a larger change for Helm 5
or later.
Signed-off-by: Matt Farina <matt.farina@suse.com>
The test was failing intermittently because Go's map iteration order
is randomized (see `range repos` in `findChartUrl`).
When looking up the `baz` chart with repository URL http://example.com/helm,
two repositories match due to trailing slash equivalence:
- testing-relative (URL: http://example.com/helm) - contains baz chart GOOD
- testing-relative-trailing-slash (URL: http://example.com/helm/) - does not contain baz chart.. NOT GOOD
The urlutil.Equal() function treats these URLs as equivalent, but
depending on which repository the random map iterator encounters
first, the test would either pass or fail with "entry not found".
So I changed the third test case from baz to foo chart, since foo exists
in both matching repositories. This eliminates the race condition while
preserving all test expectations and logic.
`findChartURL()` iterates over a map without deterministic
ordering, causing the first-match-wins behavior to be non-deterministic
when multiple repositories match the same URL pattern.
Signed-off-by: Benoit Tigeot <benoit.tigeot@lifen.fr>
There used to be two implemenations for concatenating the repo URL with
the chart URI / URL. In case the chart specified an absolute URI, one of
the implementations performed an incorrect concatenation between the
two, resulting in a URL which looks like <repo-URL><absolute-chart-URI>.
This commit removes the faulty implementation and uses the other correct
one instead.
Signed-off-by: Omri Steiner <omri@steiners.co.il>
This change moves the code, updates the import locations, and
adds a doc.go file to document what the v2 package is for.
This is part of HIP 20 for v3 charts
Signed-off-by: Matt Farina <matt.farina@suse.com>
chartutil was originally created to operate on protobufs which are
no longer part of Helm. The util package makes more sense to be
part of the chart package.
This change is part of the HIP 20 to create v3 charts and
explicitly call out v2 charts. The changes for this are in smaller
bite size changes.
Signed-off-by: Matt Farina <matt.farina@suse.com>
Since Helm is going through breaking changes with Helm v4, the version path to
Helm needs to be updated.
Signed-off-by: Matt Farina <matt.farina@suse.com>
- replace os.IsNotExist with errors.Is and fs.ErrNotExist
- use %w directive
Signed-off-by: Justen Stall <39888103+justenstall@users.noreply.github.com>
Terry Howe
George Jenkins
Matthieu MOREL
Evans Mungai
Joe Julian
Orgad Shaneh
megha1906
Mads Jensen
tison
Matt Farina
Scott Rigby
Andreas Sommer
Carlos Sanchez
Benoit Tigeot
Omri Steiner
Justen Stall
wangcundashang
Felipe Santos