readiness probe

app/start.go

@@ -65,6 +65,8 @@ func Start(dbO *sqlx.DB) *fhr.Router {
 
 	// v1 API
 	{
+		r.Method("_health", v1.HealthGET)
+
 		r.POSTMethod("/api/v1/tokens/self/delete", v1.TokenSelfDeletePOST)
 
 		// Auth-free API endpoints (public data)

app/v1/health.go

@@ -0,0 +1,32 @@
+package v1
+
+import (
+	"github.com/osuAkatsuki/akatsuki-api/app/peppy"
+	"github.com/osuAkatsuki/akatsuki-api/common"
+)
+
+type healthResponse struct {
+	common.ResponseBase
+}
+
+func HealthGET(md common.MethodData) common.CodeMessager {
+	var r healthResponse
+
+	err := peppy.R.Ping().Err()
+	if err != nil {
+		r.Code = 500
+		r.Message = "redis error"
+		return r
+	}
+
+	err = md.DB.Ping()
+	if err != nil {
+		r.Code = 500
+		r.Message = "database error"
+		return r
+	}
+
+	r.Code = 200
+	r.Message = "healthy"
+	return r
+}

chart/values.yaml

@@ -11,6 +11,15 @@ apps:
       env:
         - name: APP_COMPONENT
           value: api
+      readinessProbe:
+        httpGet:
+          path: /_health
+          port: 80
+        initialDelaySeconds: 10
+        periodSeconds: 10
+        timeoutSeconds: 1
+        successThreshold: 1
+        failureThreshold: 3
       resources:
         limits:
           cpu: 500m