From 70fa4c4468b7b0810dd9074fb49490bd0ae00cab Mon Sep 17 00:00:00 2001
From: Simon Reinisch <simon@reinisch.io>
Date: Fri, 10 Nov 2023 17:51:26 +0100
Subject: [PATCH] feat: add health check endpoint

---
 Dockerfile       |  2 ++
 routes/health.go | 12 ++++++++++++
 routes/setup.go  |  3 +++
 3 files changed, 17 insertions(+)
 create mode 100644 routes/health.go

diff --git a/Dockerfile b/Dockerfile
index 594231f..35d1117 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -27,4 +27,6 @@ ENV GENESIS_BUILD_VERSION=${GENESIS_BUILD_VERSION}
 ENV GENESIS_BUILD_DATE=${GENESIS_BUILD_DATE}
 ENV GENESIS_BUILD_COMMIT=${GENESIS_BUILD_COMMIT}
 
+HEALTHCHECK CMD wget --no-verbose --tries=1 --spider http://localhost:8080/health || exit 1
+
 CMD ["./genesis"]
diff --git a/routes/health.go b/routes/health.go
new file mode 100644
index 0000000..0e2c606
--- /dev/null
+++ b/routes/health.go
@@ -0,0 +1,12 @@
+package routes
+
+import (
+	"github.com/gin-gonic/gin"
+	"net/http"
+)
+
+func Health(c *gin.Context) {
+
+	// We assume, if the api is able to respond to this request, it is healthy.
+	c.Status(http.StatusOK)
+}
diff --git a/routes/setup.go b/routes/setup.go
index ed18c4b..24b8f46 100644
--- a/routes/setup.go
+++ b/routes/setup.go
@@ -34,5 +34,8 @@ func SetupRoutes() *gin.Engine {
 	router.GET("/data/:key", DataByKey)
 	router.GET("/data", Data)
 
+	// Heal check endpoints
+	router.GET("/health", Health)
+
 	return router
 }