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build: add experimental support for print flag

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Print flag can be used to make additional information
requests about the build and print their results.

Currently Dockerfile supports: outline, targets, subrequests.describe

Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
This commit is contained in:
Tonis Tiigi
2022-05-04 18:48:50 -07:00
parent 17dc0e1108
commit eefa8188e1
98 changed files with 8536 additions and 3339 deletions
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24
commands/build.go
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@ -48,6 +48,7 @@ const defaultTargetName = "default"
type buildOptions struct {
contextPath string
dockerfileName string
printFunc string
allow []string
buildArgs []string
@ -141,6 +142,7 @@ func runBuild(dockerCli command.Cli, in buildOptions) (err error) {
Tags: in.tags,
Target: in.target,
Ulimits: in.ulimits,
PrintFunc: in.printFunc,
}
platforms, err := platformutil.Parse(in.platforms)
@ -307,6 +309,14 @@ func buildTargets(ctx context.Context, dockerCli command.Cli, opts map[string]bu
printWarnings(os.Stderr, printer.Warnings(), progressMode)
for k := range resp {
if opts[k].PrintFunc != "" {
if err := printResult(opts[k].PrintFunc, resp[k].ExporterResponse); err != nil {
return "", nil, err
}
}
}
return resp[defaultTargetName].ExporterResponse["containerimage.digest"], res, err
}
@ -463,6 +473,10 @@ func buildCmd(dockerCli command.Cli, rootOpts *rootOptions) *cobra.Command {
flags.StringArrayVar(&options.platforms, "platform", platformsDefault, "Set target platform for build")
if isExperimental() {
flags.StringVar(&options.printFunc, "print", "", "Print result of information request (outline, targets)")
}
flags.BoolVar(&options.exportPush, "push", false, `Shorthand for "--output=type=registry"`)
flags.BoolVarP(&options.quiet, "quiet", "q", false, "Suppress the build output and print image ID on success")
@ -481,7 +495,7 @@ func buildCmd(dockerCli command.Cli, rootOpts *rootOptions) *cobra.Command {
flags.Var(options.ulimits, "ulimit", "Ulimit options")
if os.Getenv("BUILDX_EXPERIMENTAL") == "1" {
if isExperimental() {
flags.StringVar(&options.invoke, "invoke", "", "Invoke a command after the build. BUILDX_EXPERIMENTAL=1 is required.")
}
@ -652,3 +666,11 @@ func (w *wrapped) Error() string {
func (w *wrapped) Unwrap() error {
return w.err
}
func isExperimental() bool {
if v, ok := os.LookupEnv("BUILDKIT_EXPERIMENTAL"); ok {
vv, _ := strconv.ParseBool(v)
return vv
}
return false
}