Schema1 manifests did not set a size in the digest for the blobs,
breaking the expectations of the update http seeking reader. Now
the http seeker has been updated to support unknown size as a
value of negative 1 and the schema1 puller sets the unknown size
accordingly.
Signed-off-by: Derek McGowan <derek@mcgstyle.net>
Previously, `Changes()` for a symlink to absolute path, with second-precision
mtime of the link itself always resulted in ENOENT.
This is because `compareFileContent()` was called for the link target path, without changing the root path.
Fixmoby/buildkit#172
Signed-off-by: Akihiro Suda <suda.akihiro@lab.ntt.co.jp>
After running into performance issues when sending in certain kinds of
content, synchronous writes for content have been removed. Content is
still synced on commit, so this shouldn't be necessary.
Signed-off-by: Stephen J Day <stephen.day@docker.com>
This compiles the shim without cgo and statically which ends up to have
lower memory usage and binary size. buildmode=pie cannot be used
without cgo.
ref: https://github.com/golang/go/issues/17789#issuecomment-258542220
Signed-off-by: Michael Crosby <crosbymichael@gmail.com>
The binary name used for executing "containerd publish" was hard-coded
in the shim code, and hence it did not work with customized daemon
binary name. (e.g. `docker-containerd`)
This commit allows specifying custom daemon binary via `containerd-shim
-containerd-binary ...`.
The daemon invokes this command with `os.Executable()` path.
Signed-off-by: Akihiro Suda <suda.akihiro@lab.ntt.co.jp>
Because of a side-effect import, we have the possibility of pulling in
several unnecessary packages that are used by the plugin and not at
runtime to implement protobuf structures. Setting these imports to
`weak` prevents this from happening, reducing the total import set,
reducing memory usage and binary size.
Signed-off-by: Stephen J Day <stephen.day@docker.com>
By defining a concrete, non-protobuf type for the events interface, we
can completely decouple it from the grpc packages that are expensive at
runtime. This does requires some allocation cost for converting between
types, but the saving for the size of the shim are worth it.
Signed-off-by: Stephen J Day <stephen.day@docker.com>
Currently pushing a new tag to a manifest which already
exists in the registry skips the tag push because it
only checks that the manifest exists. This updates the
logic to instead check if the tag exists and is at the
same digest.
Signed-off-by: Derek McGowan <derek@mcgstyle.net>
