From 949a714ecce8a63c5344efcf348df72a91a40a0d Mon Sep 17 00:00:00 2001
From: parnic <github@parnic.com>
Date: Sat, 6 Aug 2022 08:13:11 -0500
Subject: [PATCH] Use request timeout for git service rpc (#20689)

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

Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
---
 modules/git/command.go   | 25 +++++++++++++++++--------
 routers/web/repo/http.go | 11 ++++++-----
 2 files changed, 23 insertions(+), 13 deletions(-)

diff --git a/modules/git/command.go b/modules/git/command.go
index a1bacbb707a2..b24d32dbe874 100644
--- a/modules/git/command.go
+++ b/modules/git/command.go
@@ -95,14 +95,15 @@ 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
-	Dir            string
-	Stdout, Stderr io.Writer
-	Stdin          io.Reader
-	PipelineFunc   func(context.Context, context.CancelFunc) error
+	Env               []string
+	Timeout           time.Duration
+	UseContextTimeout bool
+	Dir               string
+	Stdout, Stderr    io.Writer
+	Stdin             io.Reader
+	PipelineFunc      func(context.Context, context.CancelFunc) error
 }
 
 func commonBaseEnvs() []string {
@@ -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...)
diff --git a/routers/web/repo/http.go b/routers/web/repo/http.go
index 6a85bca16b2f..5aa2bcd13471 100644
--- a/routers/web/repo/http.go
+++ b/routers/web/repo/http.go
@@ -474,11 +474,12 @@ func serviceRPC(ctx gocontext.Context, h serviceHandler, service string) {
 	cmd := git.NewCommand(h.r.Context(), service, "--stateless-rpc", h.dir)
 	cmd.SetDescription(fmt.Sprintf("%s %s %s [repo_path: %s]", git.GitExecutable, service, "--stateless-rpc", h.dir))
 	if err := cmd.Run(&git.RunOpts{
-		Dir:    h.dir,
-		Env:    append(os.Environ(), h.environ...),
-		Stdout: h.w,
-		Stdin:  reqBody,
-		Stderr: &stderr,
+		Dir:               h.dir,
+		Env:               append(os.Environ(), h.environ...),
+		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())