Diffing a container yielded some extra changes that come from the
files/directories that we mount inside the container (/etc/resolv.conf
for example). To avoid that we create an intermediate snapshot that has
these files, with this we can now diff the container fs with its parent
and only get the differences that were made inside the container.
Signed-off-by: Djordje Lukic <djordje.lukic@docker.com>
Make `PullImage` accept `reference.Named` directly instead of
duplicating the parsing code for both graphdriver and containerd image
service implementations.
Signed-off-by: Paweł Gronowski <pawel.gronowski@docker.com>
Define consts for the Actions we use for events, instead of "ad-hoc" strings.
Having these consts makes it easier to find where specific events are triggered,
makes the events less error-prone, and allows documenting each Action (if needed).
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Change return value in function signature and return fatal errors so
they can actually be reported to the caller instead of just being logged
to daemon log.
Signed-off-by: Paweł Gronowski <pawel.gronowski@docker.com>
The GetRepository method interacts directly with the registry, and does
not depend on the snapshotter, but is used for two purposes;
For the GET /distribution/{name:.*}/json route;
dd3b71d17c/api/server/router/distribution/backend.go (L11-L15)
And to satisfy the "executor.ImageBackend" interface as used by Swarm;
58c027ac8b/daemon/cluster/executor/backend.go (L77)
This patch removes the method from the ImageService interface, and instead
implements it through an composite struct that satisfies both interfaces,
and an ImageBackend() method is added to the daemon.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
remove GetRepository from ImageService
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
This only makes the containerd ImageService implementation respect
context cancellation though.
Signed-off-by: Paweł Gronowski <pawel.gronowski@docker.com>
Push the reference parsing from repo and tag names into the api and pass
a reference object to the ImageService.
Signed-off-by: Paweł Gronowski <pawel.gronowski@docker.com>
SearchRegistryForImages does not make sense as part of the image
service interface. The implementation just wraps the search API of the
registry service to filter the results client-side. It has nothing to do
with local image storage, and the implementation of search does not need
to change when changing which backend (graph driver vs. containerd
snapshotter) is used for local image storage.
Filtering of the search results is an implementation detail: the
consumer of the results does not care which actor does the filtering so
long as the results are filtered as requested. Move filtering into the
exported API of the registry service to hide the implementation details.
Only one thing---the registry service implementation---would need to
change in order to support server-side filtering of search results if
Docker Hub or other registry servers were to add support for it to their
APIs.
Use a fake registry server in the search unit tests to avoid having to
mock out the registry API client.
Signed-off-by: Cory Snider <csnider@mirantis.com>
Co-authored-by: Nicolas De Loof <nicolas.deloof@gmail.com>
Co-authored-by: Paweł Gronowski <pawel.gronowski@docker.com>
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
This addresses the previous issue with the containerd store where, after a container is created, we can't deterministically resolve which image variant was used to run it (since we also don't store what platform the image was fetched for).
This is required for things like `docker commit`, and computing the containers layer size later, since we need to resolve the specific image variant.
Signed-off-by: Laura Brehm <laurabrehm@hey.com>
TagImage is just a wrapper for TagImageWithReference which parses the
repo and tag into a reference. Change TagImageWithReference into
TagImage and move the responsibility of reference parsing to caller.
Signed-off-by: Paweł Gronowski <pawel.gronowski@docker.com>
Signed-off-by: Djordje Lukic <djordje.lukic@docker.com>
c8d/daemon: Mount root and fill BaseFS
This fixes things that were broken due to nil BaseFS like `docker cp`
and running a container with workdir override.
This is more of a temporary hack than a real solution.
The correct fix would be to refactor the code to make BaseFS and LayerRW
an implementation detail of the old image store implementation and use
the temporary mounts for the c8d implementation instead.
That requires more work though.
Signed-off-by: Paweł Gronowski <pawel.gronowski@docker.com>
daemon/images: Don't unset BaseFS
Signed-off-by: Paweł Gronowski <pawel.gronowski@docker.com>
The singleflight function was capturing the context.Context of the first
caller that invoked the `singleflight.Do`. This could cause all
concurrent calls to be cancelled when the first request is cancelled.
singleflight calls were also moved from the ImageService to Daemon, to
avoid having to implement this logic in both graphdriver and containerd
based image services.
Signed-off-by: Paweł Gronowski <pawel.gronowski@docker.com>
Make the function name more generic, as it's no longer used only
for graphdrivers but also for snapshotters.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Currently only provides the existing "platform" option, but more
options will be added in follow-ups.
Signed-off-by: Nicolas De Loof <nicolas.deloof@gmail.com>
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
