/
native.go
180 lines (140 loc) · 3.38 KB
/
native.go
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// SPDX-FileCopyrightText: 2023 Iván SZKIBA
//
// SPDX-License-Identifier: AGPL-3.0-only
//nolint:revive,forbidigo
package builder
import (
"bytes"
"context"
"io"
"log"
"os"
"os/exec"
"github.com/Masterminds/semver/v3"
"github.com/sirupsen/logrus"
"github.com/szkiba/k6x/internal/dependency"
"go.k6.io/xk6"
)
type nativeBuilder struct {
stderr *os.File
logWriter *io.PipeWriter
logFlags int
logOutput io.Writer
}
func goVersion() (*semver.Version, bool) {
cmd, err := exec.LookPath("go")
if err != nil {
return nil, false
}
out, err := exec.Command(cmd, "version").Output() //nolint:gosec
if err != nil {
return nil, false
}
pre := []byte("go")
fields := bytes.SplitN(out, []byte{' '}, 4)
if len(fields) < 4 || !bytes.Equal(fields[0], pre) || !bytes.HasPrefix(fields[2], pre) {
return nil, false
}
ver, err := semver.NewVersion(string(bytes.TrimPrefix(fields[2], pre)))
if err != nil {
return nil, false
}
return ver, true
}
func hasGit() bool {
cmd, err := exec.LookPath("git")
if err != nil {
return false
}
_, err = exec.Command(cmd, "version").Output() //nolint:gosec
return err == nil
}
func newNativeBuilder(_ context.Context) (Builder, bool, error) {
if _, hasGo := goVersion(); !hasGo || !hasGit() {
return nil, false, nil
}
return new(nativeBuilder), true, nil
}
func (b *nativeBuilder) Engine() Engine {
return Native
}
func (b *nativeBuilder) Build(
ctx context.Context,
platform *Platform,
mods dependency.Modules,
out io.Writer,
) error {
b.logFlags = log.Flags()
b.logOutput = log.Writer()
b.logWriter = logrus.StandardLogger().WriterLevel(logrus.DebugLevel)
b.stderr = os.Stderr
log.SetOutput(b.logWriter)
log.SetFlags(0)
if null, err := os.OpenFile(os.DevNull, os.O_WRONLY, 0); err == nil {
os.Stderr = null
}
defer b.close()
if platform == nil {
platform = RuntimePlatform()
}
return b.build(ctx, platform, mods, out)
}
func (b *nativeBuilder) close() {
_ = b.logWriter.Close()
log.SetFlags(b.logFlags)
log.SetOutput(b.logOutput)
os.Stderr = b.stderr
}
func (b *nativeBuilder) build(
ctx context.Context,
platform *Platform,
mods dependency.Modules,
out io.Writer,
) error {
logrus.Debug("Building new k6 binary (native)")
builder := new(xk6.Builder)
builder.Cgo = false
builder.OS = platform.OS
builder.Arch = platform.Arch
builder.Replacements = newReplacements(mods, replacementsFromContext(ctx))
if k6, has := mods.K6(); has {
builder.K6Version = k6.Tag()
}
for _, ing := range mods.Extensions() {
builder.Extensions = append(builder.Extensions,
xk6.Dependency{
PackagePath: ing.Path,
Version: ing.Tag(),
},
)
}
tmp, err := os.CreateTemp("", "k6")
if err != nil {
return err
}
if err = tmp.Close(); err != nil {
return err
}
if err = builder.Build(ctx, tmp.Name()); err != nil {
return err
}
tmp, err = os.Open(tmp.Name())
if err != nil {
return err
}
_, err = io.Copy(out, tmp)
tmp.Close() //nolint:errcheck,gosec
os.Remove(tmp.Name()) //nolint:errcheck,gosec
return err
}
func newReplacements(mods dependency.Modules, reps Replacements) []xk6.Replace {
replacements := make([]xk6.Replace, 0, len(reps))
for name, mod := range mods {
if rep, has := reps[name]; has {
old := xk6.ReplacementPath(mod.Path)
to := xk6.ReplacementPath(rep.Path)
replacements = append(replacements, xk6.Replace{Old: old, New: to})
}
}
return replacements
}