add healthz endpoint to server

router/router.go

@@ -169,6 +169,9 @@ func Load(mux *httptreemux.ContextMux, middleware ...gin.HandlerFunc) http.Handl
 		)
 	}
 
+	e.GET("/version", server.Version)
+	e.GET("/healthz", server.Health)
+
 	return e
 }
 

server/z.go

@@ -0,0 +1,24 @@
+package server
+
+import (
+	"github.com/drone/drone/store"
+	"github.com/drone/drone/version"
+	"github.com/gin-gonic/gin"
+)
+
+// Health endpoint returns a 500 if the server state is unhealthy.
+func Health(c *gin.Context) {
+	if err := store.FromContext(c).Ping(); err != nil {
+		c.String(500, err.Error())
+		return
+	}
+	c.String(200, "")
+}
+
+// Version endpoint returns the server version and build information.
+func Version(c *gin.Context) {
+	c.JSON(200, gin.H{
+		"source":  "https://github.com/drone/drone",
+		"version": version.Version.String(),
+	})
+}

store/store.go

@@ -139,6 +139,8 @@ type Store interface {
 	TaskList() ([]*model.Task, error)
 	TaskInsert(*model.Task) error
 	TaskDelete(string) error
+
+	Ping() error
 }
 
 // GetUser gets a user by unique ID.