This commit updates (writer).Writer() method in S3 storage driver to
handle the case where an append is attempted to a zer-size content.
S3 does not allow appending to already committed content, so we are
optiing to provide the following case as a narrowed down behaviour:
Writer can only append to zero byte content - in that case, a new S3
MultipartUpload is created that will be used for overriding the already
committed zero size content.
Appending to non-zero size content fails with error.
Co-authored-by: Cory Snider <corhere@gmail.com>
Signed-off-by: Milos Gajdos <milosthegajdos@gmail.com>
GCS storage driver used to be conditionally built due to its being
outdated and basically unmaintained. Recently the driver has gone
through a rework and updates. Let's remove the build tag so we have less
headaches dealing with it and try keeping it up to date.
Signed-off-by: Milos Gajdos <milosthegajdos@gmail.com>
This linter both prevents parallel test races as well as
suggests parallel tests where appropriate:
See: https://github.com/moricho/tparallel
Signed-off-by: Milos Gajdos <milosthegajdos@gmail.com>
We make sure they're not hiding at the bottom or in the middle
which makes debugging an utter nightmare!
Signed-off-by: Milos Gajdos <milosthegajdos@gmail.com>
The API for periodic health checks is repetitive, with a distinct
function for polling a checker to each kind of updater. It also gives
the user no control over the lifetime of the polling goroutines nor
which context is passed into the checker.
Replace the existing PeriodicXYZChecker functions with a single Poll
function which composes an Updater with a Checker. Its context parameter
is passed into the checker and also controls when the polling loop
terminates. To guard against health checks failing closed (ostensibly
healthy) when the polling loop is terminated, the updater is forcefully
updated to an error status, overriding any configured threshold.
Signed-off-by: Cory Snider <csnider@mirantis.com>
Allow health checkers to abort if the request context is canceled.
Modify the checkers to respect context cancelation and return wrapped
errors so the caller of CheckStatus() would be able to discriminate true
failed checks from checks which were aborted because the context became
done.
Signed-off-by: Cory Snider <csnider@mirantis.com>
If the reference in the API request exceeds the threshold allowed by the
reference package (NOTE: this isn't defined by distribution
specification!) we return 500 back to the client.
This commit makes sure we return 400 and the explanation of the error in
the returned JSON payload.
Signed-off-by: Milos Gajdos <milosthegajdos@gmail.com>
This commit refactors the GCS storage driver from the ground up and makes
it more consistent with the rest of the storage drivers.
We are also fixing GCS authentication using default app credentials:
When the default application credentials are used we don't initialize the
GCS storage client which then panics.
Co-authored-by: Cory Snider <corhere@gmail.com>
Signed-off-by: Milos Gajdos <milosthegajdos@gmail.com>
For some reason a PR we merged passed the build even though it was
missing various func parameters. This commmit fixes it.
Signed-off-by: Milos Gajdos <milosthegajdos@gmail.com>
Several storage drivers and storage middlewares need to introspect the
client HTTP request in order to construct content-redirect URLs. The
request is indirectly passed into the driver interface method URLFor()
through the context argument, which is bad practice. The request should
be passed in as an explicit argument as the method is only called from
request handlers.
Replace the URLFor() method with a RedirectURL() method which takes an
HTTP request as a parameter instead of a context. Drop the options
argument from URLFor() as in practice it only ever encoded the request
method, which can now be fetched directly from the request. No URLFor()
callers ever passed in an "expiry" option, either.
Signed-off-by: Cory Snider <csnider@mirantis.com>
The specifics of how the authorization for a request is propagated
through the registry app are private implementation details. Hide those
details from outsiders so they can be changed as needed without fear of
breaking third-party code. Move the utilities for attaching a request's
authorization status to its context and retrieving it from the context
into the registry/handlers package as unexported symbols.
Signed-off-by: Cory Snider <csnider@mirantis.com>
The details of how request-scoped information is propagated through the
registry server app should be left as private implementation details so
they can be changed without fear of breaking compatibility with
third-party code which imports the distribution module. The
AccessController interface unnecessarily bakes into the public API
details of how authorization grants are propagated through request
contexts. In practice the only values the in-tree authorizers attach to
the request contexts are the UserInfo and Resources for the request.
Change the AccessController interface to return the UserInfo and
Resources directly to allow us to change how request contexts are used
within the app without altering the AccessController interface contract.
Signed-off-by: Cory Snider <csnider@mirantis.com>
The RemoteAddr and RemoteIP functions operate on *http.Request values,
not contexts. They have very low cohesion with the rest of the package.
Signed-off-by: Cory Snider <csnider@mirantis.com>
Our context package predates the establishment of current best practices
regarding context usage and it shows. It encourages bad practices such
as using contexts to propagate non-request-scoped values like the
application version and using string-typed keys for context values. Move
the package internal to remove it from the API surface of
distribution/v3@v3.0.0 so we are free to iterate on it without being
constrained by compatibility.
Signed-off-by: Cory Snider <csnider@mirantis.com>
This commit make the S3 driver chunk size constants more straightforward
to understand -- instead of remembering the bit shifts we make this more
explicit.
We are also updating append parameter to the `(writer).Write` to follow
the new convention we are trying to establish.
Signed-off-by: Milos Gajdos <milosthegajdos@gmail.com>
Nowadays there are much, much better UUID implementations to choose
from, such as github.com/google/uuid. Prevent external users from
importing our bespoke implementation so that we can change or migrate
away from it internally without introducing breaking changes.
Signed-off-by: Cory Snider <csnider@mirantis.com>
Our registry client is not currently in a good place to be used as the
reference OCI Distribution client implementation. But the registry proxy
currently depends on it. Make the registry client internal to the
distribution application to remove it from the API surface area (and any
implied compatibility promises) of distribution/v3@v3.0.0 without
breaking the proxy.
Signed-off-by: Cory Snider <csnider@mirantis.com>
docker/libtrust repository has been archived for several years now.
This commit replaces all the libtrust JWT machinery with go-jose/go-jose module.
Some of the code has been adopted from libtrust and adjusted for some of
the use cases covered by the token authorization flow especially in the
tests.
Signed-off-by: Milos Gajdos <milosthegajdos@gmail.com>
This commit changes storagedriver.Filewriter interface
by adding context.Context as an argument to its Commit
func.
We pass the context appropriately where need be throughout
the distribution codebase to all the writers and tests.
S3 driver writer unfortunately must maintain the context
passed down to it from upstream so it contnues to
implement io.Writer and io.Closer interfaces which do not
allow accepting the context in any of their funcs.
Co-authored-by: Cory Snider <corhere@gmail.com>
Signed-off-by: Milos Gajdos <milosthegajdos@gmail.com>
Small refactoring of storagedriver errors.
We change the Enclosed field to Detail and make sure
Errors get properly serialized to JSON.
We also add tests.
Signed-off-by: Milos Gajdos <milosthegajdos@gmail.com>
Nested files aren't supported on MinIO, and as our storage layout is
filesystem based, we don't actually use nest files in the code.
Remove the test so that we can support MinIO.
Signed-off-by: James Hewitt <james.hewitt@uk.ibm.com>
This fixes some of the tests for minio.
The walk tests needs a version of minio that contains https://github.com/minio/minio/pull/18099
The storage classes minio supports are a subset of the s3 classes.
Signed-off-by: James Hewitt <james.hewitt@uk.ibm.com>
