A virtual jailed shell environment for Go apps backed by an io/fs#FS.
feat(command): add python3 backed by wasi
Signed-off-by: Xe Iaso <me@xeiaso.net>
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command/internal/python3/python.wasm
command/internal/python3/python.wasm
This is a binary file and will not be displayed.
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command/internal/python3/python3.go
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command/internal/python3/python3.go
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package python3
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import (
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"context"
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_ "embed"
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"github.com/tetratelabs/wazero"
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"github.com/tetratelabs/wazero/imports/wasi_snapshot_preview1"
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"tangled.org/xeiaso.net/kefka/command"
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)
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var (
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//go:embed python.wasm
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pyWASM []byte
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r wazero.Runtime
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code wazero.CompiledModule
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)
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func init() {
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ctx := context.Background()
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r = wazero.NewRuntime(ctx)
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wasi_snapshot_preview1.MustInstantiate(ctx, r)
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var err error
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code, err = r.CompileModule(ctx, pyWASM)
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if err != nil {
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panic(err)
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}
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}
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type Impl struct{}
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func (Impl) Exec(ctx context.Context, ec *command.ExecContext, args []string) error {
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fsConfig := wazero.NewFSConfig().
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WithFSMount(ec.FS, "/")
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config := wazero.NewModuleConfig().
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// stdio
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WithStdin(ec.Stdin).
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WithStdout(ec.Stdout).
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WithStderr(ec.Stderr).
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// argv
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WithArgs(append([]string{"python3"}, args...)...).
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WithName("python3").
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// filesystem
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WithFSConfig(fsConfig).
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// time
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WithSysNanosleep().
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WithSysNanotime().
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WithSysWalltime()
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mod, err := r.InstantiateModule(ctx, code, config)
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if err != nil {
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return err
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}
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defer mod.Close(ctx)
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return nil
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}