* Add copyright Signed-off-by: jolheiser <john.olheiser@gmail.com> * Add gitea-vet and fix non-compliance Signed-off-by: jolheiser <john.olheiser@gmail.com> * Combine tools.go into build.go and clean up Signed-off-by: jolheiser <john.olheiser@gmail.com> * Remove extra GO111MODULE=on Signed-off-by: jolheiser <john.olheiser@gmail.com>
126 lines
3.6 KiB
Go
126 lines
3.6 KiB
Go
// Package gocommand is a helper for calling the go command.
|
|
package gocommand
|
|
|
|
import (
|
|
"bytes"
|
|
"context"
|
|
"fmt"
|
|
"io"
|
|
"os"
|
|
"os/exec"
|
|
"strings"
|
|
"time"
|
|
)
|
|
|
|
// An Invocation represents a call to the go command.
|
|
type Invocation struct {
|
|
Verb string
|
|
Args []string
|
|
BuildFlags []string
|
|
Env []string
|
|
WorkingDir string
|
|
Logf func(format string, args ...interface{})
|
|
}
|
|
|
|
// Run runs the invocation, returning its stdout and an error suitable for
|
|
// human consumption, including stderr.
|
|
func (i *Invocation) Run(ctx context.Context) (*bytes.Buffer, error) {
|
|
stdout, _, friendly, _ := i.RunRaw(ctx)
|
|
return stdout, friendly
|
|
}
|
|
|
|
// RunRaw is like RunPiped, but also returns the raw stderr and error for callers
|
|
// that want to do low-level error handling/recovery.
|
|
func (i *Invocation) RunRaw(ctx context.Context) (stdout *bytes.Buffer, stderr *bytes.Buffer, friendlyError error, rawError error) {
|
|
stdout = &bytes.Buffer{}
|
|
stderr = &bytes.Buffer{}
|
|
rawError = i.RunPiped(ctx, stdout, stderr)
|
|
if rawError != nil {
|
|
// Check for 'go' executable not being found.
|
|
if ee, ok := rawError.(*exec.Error); ok && ee.Err == exec.ErrNotFound {
|
|
friendlyError = fmt.Errorf("go command required, not found: %v", ee)
|
|
}
|
|
if ctx.Err() != nil {
|
|
friendlyError = ctx.Err()
|
|
}
|
|
friendlyError = fmt.Errorf("err: %v: stderr: %s", rawError, stderr)
|
|
}
|
|
return
|
|
}
|
|
|
|
// RunPiped is like Run, but relies on the given stdout/stderr
|
|
func (i *Invocation) RunPiped(ctx context.Context, stdout, stderr io.Writer) error {
|
|
log := i.Logf
|
|
if log == nil {
|
|
log = func(string, ...interface{}) {}
|
|
}
|
|
|
|
goArgs := []string{i.Verb}
|
|
switch i.Verb {
|
|
case "mod":
|
|
// mod needs the sub-verb before build flags.
|
|
goArgs = append(goArgs, i.Args[0])
|
|
goArgs = append(goArgs, i.BuildFlags...)
|
|
goArgs = append(goArgs, i.Args[1:]...)
|
|
case "env":
|
|
// env doesn't take build flags.
|
|
goArgs = append(goArgs, i.Args...)
|
|
default:
|
|
goArgs = append(goArgs, i.BuildFlags...)
|
|
goArgs = append(goArgs, i.Args...)
|
|
}
|
|
cmd := exec.Command("go", goArgs...)
|
|
cmd.Stdout = stdout
|
|
cmd.Stderr = stderr
|
|
// On darwin the cwd gets resolved to the real path, which breaks anything that
|
|
// expects the working directory to keep the original path, including the
|
|
// go command when dealing with modules.
|
|
// The Go stdlib has a special feature where if the cwd and the PWD are the
|
|
// same node then it trusts the PWD, so by setting it in the env for the child
|
|
// process we fix up all the paths returned by the go command.
|
|
cmd.Env = append(append([]string{}, i.Env...), "PWD="+i.WorkingDir)
|
|
cmd.Dir = i.WorkingDir
|
|
|
|
defer func(start time.Time) { log("%s for %v", time.Since(start), cmdDebugStr(cmd)) }(time.Now())
|
|
|
|
return runCmdContext(ctx, cmd)
|
|
}
|
|
|
|
// runCmdContext is like exec.CommandContext except it sends os.Interrupt
|
|
// before os.Kill.
|
|
func runCmdContext(ctx context.Context, cmd *exec.Cmd) error {
|
|
if err := cmd.Start(); err != nil {
|
|
return err
|
|
}
|
|
resChan := make(chan error, 1)
|
|
go func() {
|
|
resChan <- cmd.Wait()
|
|
}()
|
|
|
|
select {
|
|
case err := <-resChan:
|
|
return err
|
|
case <-ctx.Done():
|
|
}
|
|
// Cancelled. Interrupt and see if it ends voluntarily.
|
|
cmd.Process.Signal(os.Interrupt)
|
|
select {
|
|
case err := <-resChan:
|
|
return err
|
|
case <-time.After(time.Second):
|
|
}
|
|
// Didn't shut down in response to interrupt. Kill it hard.
|
|
cmd.Process.Kill()
|
|
return <-resChan
|
|
}
|
|
|
|
func cmdDebugStr(cmd *exec.Cmd) string {
|
|
env := make(map[string]string)
|
|
for _, kv := range cmd.Env {
|
|
split := strings.Split(kv, "=")
|
|
k, v := split[0], split[1]
|
|
env[k] = v
|
|
}
|
|
|
|
return fmt.Sprintf("GOROOT=%v GOPATH=%v GO111MODULE=%v GOPROXY=%v PWD=%v go %v", env["GOROOT"], env["GOPATH"], env["GO111MODULE"], env["GOPROXY"], env["PWD"], cmd.Args)
|
|
}
|