From a67c31e0b533fbe346c8a867ac48c33b1e5acd3b Mon Sep 17 00:00:00 2001
From: Helmut Merz <helmutm@cy55.de>
Date: Fri, 11 Aug 2023 17:27:26 +0200
Subject: [PATCH] provide DelayedStart() (proof-of-concept): parameterized
 handler (factory)

---
 core/core.go         | 12 ++++++++++++
 server/server.go     |  2 ++
 tests/etc/etc.go     |  2 +-
 tests/scopes_test.go |  2 +-
 4 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/core/core.go b/core/core.go
index 96ef5ac..2e7dcd1 100644
--- a/core/core.go
+++ b/core/core.go
@@ -2,6 +2,7 @@ package core
 
 import (
 	"fmt"
+	"time"
 
 	lib "git.sr.ht/~cco/go-scopes"
 	"git.sr.ht/~cco/go-scopes/config"
@@ -16,6 +17,17 @@ func Start(ctx lib.Context) {
 	lib.RunCtx(ctx, Listen)
 }
 
+func DelayedStart(starter lib.StartProc, delay time.Duration) lib.StartProc {
+	if starter == nil {
+		starter = Start
+	}
+	return func(ctx lib.Context) {
+		logging.Debug(ctx).Int("delay", int(delay)).Msg("core.DelayedStart")
+		time.Sleep(delay * time.Millisecond)
+		starter(ctx)
+	}
+}
+
 func Listen(ctx lib.Context) {
 	step := ctx.Config().Step()
 	for step(ctx) {
diff --git a/server/server.go b/server/server.go
index a487e79..42ed0c8 100644
--- a/server/server.go
+++ b/server/server.go
@@ -7,6 +7,7 @@ import (
 	lib "git.sr.ht/~cco/go-scopes"
 	"git.sr.ht/~cco/go-scopes/core"
 	"git.sr.ht/~cco/go-scopes/core/message"
+	"git.sr.ht/~cco/go-scopes/logging"
 	"github.com/gin-gonic/gin"
 )
 
@@ -44,6 +45,7 @@ func Serve(ctx lib.Context) {
 	}
 	srv := &http.Server{Addr: cfg.Addr, Handler: r}
 	ctx.WithState(&ServerState{server: srv})
+	logging.Debug(ctx).Str("addr", cfg.Addr).Msg("server.Serve")
 	lib.RunCtx(ctx, func(ctx lib.Context) {
 		srv.ListenAndServe()
 	})
diff --git a/tests/etc/etc.go b/tests/etc/etc.go
index 6084dd6..f48d02d 100644
--- a/tests/etc/etc.go
+++ b/tests/etc/etc.go
@@ -35,7 +35,7 @@ func Config() lib.Config {
 	server_c.AddRoute("/api", server.MsgHandler("demo", nil, "test-receiver"))
 
 	test_client := &client.Cfg{
-		BaseCfg: b("test-client", core.Start),
+		BaseCfg: b("test-client", core.DelayedStart(core.Start, 50)),
 		Url:     ovr("http://localhost:8123/api", SERVER_URL),
 	}
 	test_client.AddAction("demo", action.Base(client.Send))
diff --git a/tests/scopes_test.go b/tests/scopes_test.go
index 51d8de3..341b95c 100644
--- a/tests/scopes_test.go
+++ b/tests/scopes_test.go
@@ -19,7 +19,7 @@ func TestScopesApp(tb *tbase.T) {
 	t.Run("send", SendTest)
 	t.Run("client", ClientTest)
 	t.TearDownApp("")
-	t.AssertEqual(t.LogCheck("", true), 16)
+	t.AssertEqual(t.LogCheck("", true), 18)
 }
 
 func AppTest(t *testing.T) {