Use request timeout for git service rpc (#20689) (#20693)

This enables git.Command's Run to optionally use the given context directly so its deadline will be respected. Otherwise, it falls back to the previous behavior of using the supplied timeout or a default timeout value of 360 seconds.

repo's serviceRPC() calls now use the context's deadline (which is unset/unlimited) instead of the default 6-minute timeout. This means that large repo clones will no longer arbitrarily time out on the upload-pack step, and pushes can take longer than 6 minutes on the receive-pack step.

Fixes #20680

modules/git/command.go

@@ -95,10 +95,11 @@ func (c *Command) AddArguments(args ...string) *Command {
 	return c
 }
 
-// RunOpts represents parameters to run the command
+// RunOpts represents parameters to run the command. If UseContextTimeout is specified, then Timeout is ignored.
 type RunOpts struct {
 	Env               []string
 	Timeout           time.Duration
+	UseContextTimeout bool
 	Dir               string
 	Stdout, Stderr    io.Writer
 	Stdin             io.Reader
@@ -171,7 +172,15 @@ func (c *Command) Run(opts *RunOpts) error {
 		desc = fmt.Sprintf("%s %s [repo_path: %s]", c.name, strings.Join(args, " "), opts.Dir)
 	}
 
-	ctx, cancel, finished := process.GetManager().AddContextTimeout(c.parentContext, opts.Timeout, desc)
+	var ctx context.Context
+	var cancel context.CancelFunc
+	var finished context.CancelFunc
+
+	if opts.UseContextTimeout {
+		ctx, cancel, finished = process.GetManager().AddContext(c.parentContext, desc)
+	} else {
+		ctx, cancel, finished = process.GetManager().AddContextTimeout(c.parentContext, opts.Timeout, desc)
+	}
 	defer finished()
 
 	cmd := exec.CommandContext(ctx, c.name, c.args...)

routers/web/repo/http.go

@@ -479,6 +479,7 @@ func serviceRPC(ctx gocontext.Context, h serviceHandler, service string) {
 		Stdout:            h.w,
 		Stdin:             reqBody,
 		Stderr:            &stderr,
+		UseContextTimeout: true,
 	}); err != nil {
 		if err.Error() != "signal: killed" {
 			log.Error("Fail to serve RPC(%s) in %s: %v - %s", service, h.dir, err, stderr.String())