Enable reference transaction voting via backchannels

This commit implements backchannel voting support in Gitaly behind
the 'gitaly_backchannel_voting' feature flag.

Historically, Gitaly has used Praefect provided details to dial back to
the Praefect to cast votes. This has been problematic due to the address
provided by Praefect not always being reachable by Gitaly. To solve the
dialing problems, connection multiplexing was implemented between Gitaly
and Praefect to allow Gitaly to communicate withe the TransactionService
in Praefect via the same connection Praefect established to Gitaly. When
the feature flags is enabled, Gitaly uses the 'backchannel' connection
instead of connecting to the Praefect using the Praefect provided details.

1 files changed, 3 insertions, 2 deletions

diff --git a/cmd/gitaly-hooks/hooks_test.go b/cmd/gitaly-hooks/hooks_test.go
index 5e93a7b49..da3040ac0 100644
--- a/cmd/gitaly-hooks/hooks_test.go
+++ b/cmd/gitaly-hooks/hooks_test.go
@@ -584,10 +584,11 @@ func runHookServiceServer(t *testing.T, cfg config.Cfg) func() {
 }
 
 func runHookServiceServerWithAPI(t *testing.T, cfg config.Cfg, gitlabAPI gitalyhook.GitlabAPI) func() {
-	txManager := transaction.NewManager(cfg, backchannel.NewRegistry())
+	registry := backchannel.NewRegistry()
+	txManager := transaction.NewManager(cfg, registry)
 	hookManager := gitalyhook.NewManager(config.NewLocator(cfg), txManager, gitlabAPI, cfg)
 	gitCmdFactory := git.NewExecCommandFactory(cfg)
-	server := testhelper.NewServerWithAuth(t, nil, nil, cfg.Auth.Token, testhelper.WithInternalSocket(cfg))
+	server := testhelper.NewServerWithAuth(t, nil, nil, cfg.Auth.Token, registry, testhelper.WithInternalSocket(cfg))
 
 	gitalypb.RegisterHookServiceServer(server.GrpcServer(), hook.NewServer(cfg, hookManager, gitCmdFactory))
 	reflection.Register(server.GrpcServer())