From 8bb5770636afaa42a54f294854cccd2d1285cc63 Mon Sep 17 00:00:00 2001
From: Laszlo Fogas <laszlo@laszlo.cloud>
Date: Fri, 28 Jun 2019 08:42:06 +0200
Subject: [PATCH] Endpoint that blocks until there are running builds

---
 router/router.go |  4 ++++
 server/hook.go   | 10 ++++++++++
 2 files changed, 14 insertions(+)

diff --git a/router/router.go b/router/router.go
index 5968d64b2..2fa37b3b2 100644
--- a/router/router.go
+++ b/router/router.go
@@ -158,6 +158,10 @@ func Load(mux *httptreemux.ContextMux, middleware ...gin.HandlerFunc) http.Handl
 			session.MustAdmin(),
 			server.ResumeQueue,
 		)
+		queue.GET("/norunningbuilds",
+			session.MustAdmin(),
+			server.BlockTilQueueHasRunningItem,
+		)
 	}
 
 	auth := e.Group("/authorize")
diff --git a/server/hook.go b/server/hook.go
index 9f82a172d..0becc690c 100644
--- a/server/hook.go
+++ b/server/hook.go
@@ -62,6 +62,16 @@ func ResumeQueue(c *gin.Context) {
 	c.Status(http.StatusOK)
 }
 
+func BlockTilQueueHasRunningItem(c *gin.Context) {
+	for {
+		info := Config.Services.Queue.Info(c)
+		if info.Stats.Running == 0 {
+			break
+		}
+	}
+	c.Status(http.StatusOK)
+}
+
 func PostHook(c *gin.Context) {
 	remote_ := remote.FromContext(c)