Export:
$ buildctl build ... --export-cache type=local,store=/path/to/output-dir
Import:
$ buildctl build ... --import-cache type=local,store=/path/to/input-dir
Impact on CLI:
* Old (deprecated but still effective): `--export-cache localhost:5000/myrepo:buildcache --export-cache-opt mode=max`
* New: `--export-cache type=registry,ref=localhost:5000/myrepo:buildcache,mode=max`
Impact on API:
* New fields are added to control.proto and gateway.proto. The daemon
internally translates old API calls to the new ones.
* While new API can be used for `registry` caches, the client continues
to use the legacy API for `registry` caches to ensure compatibility with
old daemons.
* To import `local` caches with a frontend, the frontend needs to support
a new frontend opt `cache-imports`.
Signed-off-by: Akihiro Suda <suda.akihiro@lab.ntt.co.jp>
The alternative is a helper container running e.g. find, capturing the output
to a scratch to be read back (with ref.ReadFile) and parsed.
Signed-off-by: Ian Campbell <ijc@docker.com>
Most accesses to this map are protected. Add the missing locks (some of which
are in code paths where we wouldn't normally expect concurrent accesses, but
better to be safe).
Signed-off-by: Ian Campbell <ijc@docker.com>
Tests such as TestNoSnapshotLeak were failing in client mode (e.g. using #522)
because we weren't releasing the intermediate refs.
Resolve this by refactoring the existing code which frees the intermediate refs
from `gatewayFrontend.Solve` into a method on `llbBridgeForwarder` and as well
as the original site also call from the solver when the top-level solve (in
clientside frontend mode) completes. The original call (which is via a defer)
could likely sensibly be moved either earlier or later if desired but leave it
here it is to minimise the scope of the change.
The previous code used the `retErr` named return but the code between that
point and the end of the function already ensured that `lbf.err` is the same as
`retErr`, thus the only change in the code which has moved is
`s/retErr/lbf.err/`. Note that the `res` named return was previously unused by
name.
Fixes#581.
Signed-off-by: Ian Campbell <ijc@docker.com>
This allows builder code to be written which can be built as either a gateway
container or in a purely client side configuration, giving implementors more
flexibility.
Now when `Solve` sees a request with neither a definition nor a frontend
specified it will make the job available via new LLBBridge endpoints on the
control socket which the client can then use. These end points require the job
id to be present in the gRPC metadata and a client side object is added to
facilitate this.
The `llbBridgeForwarder` type is now exposed as a public `interface
LLBBridgeForwarder` which satisfies the underlying gRPC server interface
(`pb.LLBBridgeServer`) as well as a new `Done()` & `Result()` pair which can be
used to wait for the client to call `Return()` (using a model similar to
`context.Context`).
Signed-off-by: Ian Campbell <ijc@docker.com>
Refactor the setting/getting of the result for a `llbBridgeForwarder` in order
to check that `Return` is only called once and only with the correct options.
Signed-off-by: Ian Campbell <ijc@docker.com>
Tonis Tiigi
Cory Bennett
Edgar Lee
Akihiro Suda
Ian Campbell