This commit adds a flag through Pull API for allowing GC to clean layer contents
up after unpacking these contents completed.
This patch takes an approach to directly delete GC labels pointing to layers
from the manifest blob. This will result in other snapshotters cannot reuse
these contents on the next pull. But this patch mainly focuses on CRI use-cases
where single snapshotter is usually used throughout the node lifecycle so this
shouldn't be a matter.
Signed-off-by: Kohei Tokunaga <ktokunaga.mail@gmail.com>
For remote snapshotter cases it's quite often there is need to pass extra info
from client (for instance - registry URL to query remote layer from, credentials, etc).
This commit slightly extends WithPullSnapshotter to pass extra labels to a snapshotter.
Signed-off-by: Maksym Pavlenko <makpav@amazon.com>
We can use cross repository push feature to reuse the existing blobs in
the same registry. Before make push fast, we know where the blob comes
from.
Use the `containerd.io/distribution.source. = [,]` as label format. For
example, the blob is downloaded by the docker.io/library/busybox:latest
and the label will be
containerd.io/distribution.source.docker.io = library/busybox
If the blob is shared by different repos in the same registry, the repo
name will be appended, like:
containerd.io/distribution.source.docker.io = library/busybox,x/y
NOTE:
1. no need to apply for legacy docker image schema1.
2. the concurrent fetch actions might miss some repo names in label, but
it is ok.
3. it is optional. no need to add label if the engine only uses images
not push.
Signed-off-by: Wei Fu <fuweid89@gmail.com>
Gives clients more control of the pull process, allowing
the client to operate on a descriptor after it has been
pulled. This could be useful for filtering output or
tracking children before they dispatched to. This can
also be used to call custom unpackers to have visibility
into a pulled config in parallel to the downloads.
Signed-off-by: Derek McGowan <derek@mcgstyle.net>
Adds a new platform interface for matching and comparing platforms.
This new interface allows both filtering and ordering of platforms
to support running multiple platform and choosing the best platform.
Signed-off-by: Derek McGowan <derek@mcgstyle.net>
The default platform had previously been provided using the
empty string. This change ensures that the platforms
field is always filled in correctly and empty string is
properly interpreted.
Signed-off-by: Derek McGowan <derek@mcgstyle.net>
