From 6aa38ce21ff911b504b211343e41482b6e8f2df6 Mon Sep 17 00:00:00 2001 From: Nikolay Govorov Date: Sun, 29 Mar 2026 22:22:38 +0100 Subject: Use starlark instead of shell script --- cmd/mirumd/main.go | 66 +++++++++++++++++++++++++++++++++++++++++++--- go.mod | 4 +++ go.sum | 59 ++++++----------------------------------- 3 files changed, 75 insertions(+), 54 deletions(-) diff --git a/cmd/mirumd/main.go b/cmd/mirumd/main.go index 09f3f10..062d1d7 100644 --- a/cmd/mirumd/main.go +++ b/cmd/mirumd/main.go @@ -17,14 +17,17 @@ import ( "net/url" "os" "os/exec" + "path/filepath" "strings" + + "go.starlark.net/starlark" ) var ( addr = flag.String("addr", ":3000", "listen address") secret = flag.String("secret", "", "GitHub webhook secret") token = flag.String("token", "", "GitHub personal access token (required)") - script = flag.String("script", "ci.sh", "script to run from repo root") + script = flag.String("script", ".mirum/main.star", "starlark script to run from repo root") ) type pushEvent struct { @@ -62,8 +65,8 @@ func processPush(push pushEvent) { return } - if out, err := runCmd(dir, "bash", *script); err != nil { - log.Error("build failed", "err", err, "output", out) + if err := runStarlark(dir); err != nil { + log.Error("build failed", "err", err) _ = setStatus(owner, repo, sha, "failure", "Build failed") return } @@ -135,6 +138,63 @@ func splitFullName(fullName string) (string, string) { return parts[0], parts[1] } +type taskCtx struct { + dir string +} + +var _ starlark.HasAttrs = (*taskCtx)(nil) + +func (c *taskCtx) String() string { return "ctx" } +func (c *taskCtx) Type() string { return "ctx" } +func (c *taskCtx) Freeze() {} +func (c *taskCtx) Truth() starlark.Bool { return true } +func (c *taskCtx) Hash() (uint32, error) { return 0, fmt.Errorf("unhashable: ctx") } +func (c *taskCtx) AttrNames() []string { return []string{"shell"} } + +func (c *taskCtx) Attr(name string) (starlark.Value, error) { + if name == "shell" { + return starlark.NewBuiltin("ctx.shell", c.shell), nil + } + return nil, nil +} + +func (c *taskCtx) shell(thread *starlark.Thread, fn *starlark.Builtin, args starlark.Tuple, kwargs []starlark.Tuple) (starlark.Value, error) { + var cmd string + if err := starlark.UnpackPositionalArgs(fn.Name(), args, kwargs, 1, &cmd); err != nil { + return nil, err + } + proc := exec.Command("bash", "-c", cmd) + proc.Dir = c.dir + proc.Stdout = os.Stdout + proc.Stderr = os.Stderr + err := proc.Run() + if err != nil { + return nil, err + } + return starlark.None, nil +} + +func runStarlark(dir string) error { + thread := &starlark.Thread{Name: "mirum"} + globals, err := starlark.ExecFile(thread, filepath.Join(dir, *script), nil, nil) + if err != nil { + return err + } + + projectFn, ok := globals["project"] + if !ok { + return fmt.Errorf("%s: project() not defined", *script) + } + fn, ok := projectFn.(starlark.Callable) + if !ok { + return fmt.Errorf("%s: project is not a function", *script) + } + + ctx := &taskCtx{dir: dir} + _, err = starlark.Call(thread, fn, starlark.Tuple{ctx}, nil) + return err +} + func runCmd(dir, name string, args ...string) (string, error) { cmd := exec.Command(name, args...) cmd.Dir = dir diff --git a/go.mod b/go.mod index c868ddb..632a160 100644 --- a/go.mod +++ b/go.mod @@ -1,3 +1,7 @@ module mrdimidium/mirum go 1.26.1 + +require go.starlark.net v0.0.0-20260326113308-fadfc96def35 + +require golang.org/x/sys v0.42.0 // indirect diff --git a/go.sum b/go.sum index 17c73f5..fa78fcb 100644 --- a/go.sum +++ b/go.sum @@ -1,51 +1,8 @@ -github.com/anchore/go-lzo v0.1.0 h1:NgAacnzqPeGH49Ky19QKLBZEuFRqtTG9cdaucc3Vncs= -github.com/anchore/go-lzo v0.1.0/go.mod h1:3kLx0bve2oN1iDwgM1U5zGku1Tfbdb0No5qp1eL1fIk= -github.com/cpuguy83/go-md2man/v2 v2.0.6/go.mod h1:oOW0eioCTA6cOiMLiUPZOpcVxMig6NIQQ7OS05n1F4g= -github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= -github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c= 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