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controller: refactor progress api

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Refactor the progress printer creation to the caller-side of the
controller api. Then, instead of passing around status channels (and
progressMode strings), we can simply pass around the higher level
interface progress.Writer.

This has a couple of benefits:
- A simplified interface to the controller
- Allows us to correctly extract warnings out of the controller, so that
  they can be displayed correctly from the client side.

Some extra work is required to make sure that we can pass a
progress.Printer into the debug monitor. If we want to keep it
persistent, then we need a way to temporarily suspend output from it,
otherwise it will continue printing as the monitor is prompting for
input from the user, and forwarding output from debug containers.

To handle this, we add two methods to the printer, `Pause` and
`Unpause`. `Pause` acts similarly to `Wait`, closing the printer, and
cleanly shutting down the display - however, the printer does not
terminate, and can later be resumed by a call to `Unpause`. This
provides a neater interface to the caller, instead of needing to
continually reconstruct printers for every single time we want to
produce progress output.

Signed-off-by: Justin Chadwell <me@jedevc.com>
This commit is contained in:
Justin Chadwell
2023-04-21 11:17:43 +01:00
parent 0c1fd31226
commit e826141af4
11 changed files with 190 additions and 122 deletions
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4
controller/control/controller.go
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@ -4,13 +4,13 @@ import (
"context"
"io"
"github.com/containerd/console"
controllerapi "github.com/docker/buildx/controller/pb"
"github.com/docker/buildx/util/progress"
"github.com/moby/buildkit/client"
)
type BuildxController interface {
Build(ctx context.Context, options controllerapi.BuildOptions, in io.ReadCloser, w io.Writer, out console.File, progressMode string) (ref string, resp *client.SolveResponse, err error)
Build(ctx context.Context, options controllerapi.BuildOptions, in io.ReadCloser, progress progress.Writer) (ref string, resp *client.SolveResponse, err error)
// Invoke starts an IO session into the specified process.
// If pid doesn't matche to any running processes, it starts a new process with the specified config.
// If there is no container running or InvokeConfig.Rollback is speicfied, the process will start in a newly created container.