122 lines
3.4 KiB
Go
122 lines
3.4 KiB
Go
package main
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import (
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"flag"
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"os"
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"github.com/moby/buildkit/client/llb"
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"github.com/moby/buildkit/util/system"
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)
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type buildOpt struct {
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withContainerd bool
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containerd string
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runc string
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buildkit string
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}
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func main() {
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var opt buildOpt
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flag.BoolVar(&opt.withContainerd, "with-containerd", true, "enable containerd worker")
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flag.StringVar(&opt.containerd, "containerd", "v1.0.3", "containerd version")
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flag.StringVar(&opt.runc, "runc", "9f9c96235cc97674e935002fc3d78361b696a69e", "runc version")
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flag.StringVar(&opt.buildkit, "buildkit", "master", "buildkit version")
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flag.Parse()
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bk := buildkit(opt)
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out := bk
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dt, err := out.Marshal()
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if err != nil {
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panic(err)
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}
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llb.WriteTo(dt, os.Stdout)
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}
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func goBuildBase() llb.State {
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goAlpine := llb.Image("docker.io/library/golang:1.10-alpine")
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return goAlpine.
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AddEnv("PATH", "/usr/local/go/bin:"+system.DefaultPathEnv).
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AddEnv("GOPATH", "/go").
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Run(llb.Shlex("apk add --no-cache g++ linux-headers make")).Root()
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}
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func goRepo(s llb.State, repo string, src llb.State) func(ro ...llb.RunOption) llb.State {
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dir := "/go/src/" + repo
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return func(ro ...llb.RunOption) llb.State {
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es := s.Dir(dir).Run(ro...)
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es.AddMount(dir, src, llb.Readonly)
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return es.AddMount("/out", llb.Scratch())
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}
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}
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func runc(version string) llb.State {
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repo := "github.com/opencontainers/runc"
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src := llb.Git(repo, version)
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if version == "local" {
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src = llb.Local("runc-src")
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}
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return goRepo(goBuildBase(), repo, src)(
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llb.Shlex("go build -o /out/runc ./"),
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)
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}
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func containerd(version string) llb.State {
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repo := "github.com/containerd/containerd"
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src := llb.Git(repo, version, llb.KeepGitDir())
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if version == "local" {
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src = llb.Local("containerd-src")
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}
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return goRepo(
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goBuildBase().
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Run(llb.Shlex("apk add --no-cache btrfs-progs-dev")).Root(),
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repo, src)(
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llb.Shlex("go build -o /out/containerd ./cmd/containerd"),
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)
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}
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func buildkit(opt buildOpt) llb.State {
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repo := "github.com/moby/buildkit"
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src := llb.Git(repo, opt.buildkit)
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if opt.buildkit == "local" {
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src = llb.Local("buildkit-src")
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}
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run := goRepo(goBuildBase(), repo, src)
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buildkitdOCIWorkerOnly := run(llb.Shlex("go build -o /out/buildkitd.oci_only -tags no_containerd_worker ./cmd/buildkitd"))
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buildkitd := run(llb.Shlex("go build -o /out/buildkitd ./cmd/buildkitd"))
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buildctl := run(llb.Shlex("go build -o /out/buildctl ./cmd/buildctl"))
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r := llb.Scratch().With(
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copyAll(buildctl, "/"),
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copyAll(runc(opt.runc), "/"),
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)
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if opt.withContainerd {
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return r.With(
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copyAll(containerd(opt.containerd), "/"),
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copyAll(buildkitd, "/"))
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}
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return r.With(copyAll(buildkitdOCIWorkerOnly, "/"))
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}
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func copyAll(src llb.State, destPath string) llb.StateOption {
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return copyFrom(src, "/.", destPath)
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}
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// copyFrom has similar semantics as `COPY --from`
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func copyFrom(src llb.State, srcPath, destPath string) llb.StateOption {
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return func(s llb.State) llb.State {
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return copy(src, srcPath, s, destPath)
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}
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}
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// copy copies files between 2 states using cp until there is no copyOp
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func copy(src llb.State, srcPath string, dest llb.State, destPath string) llb.State {
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cpImage := llb.Image("docker.io/library/alpine:latest@sha256:1072e499f3f655a032e88542330cf75b02e7bdf673278f701d7ba61629ee3ebe")
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cp := cpImage.Run(llb.Shlexf("cp -a /src%s /dest%s", srcPath, destPath))
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cp.AddMount("/src", src, llb.Readonly)
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return cp.AddMount("/dest", dest)
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}
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