Merge pull request 'Fix #3030 add Cache-Control header for health-check' (#3060) from adaaa/forgejo:cache-control-healthz into forgejo

Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/3060
Reviewed-by: Gusted <gusted@noreply.codeberg.org>

1 files changed, 22 insertions, 21 deletions

diff --git a/routers/web/healthcheck/check.go b/routers/web/healthcheck/check.go
index d278ee1709..83dfe62537 100644
--- a/routers/web/healthcheck/check.go
+++ b/routers/web/healthcheck/check.go
@@ -19,7 +19,7 @@ import (
 type status string
 
 const (
-	// pass healthy (acceptable aliases: "ok" to support Node's Terminus and "up" for Java's SpringBoot)
+	// Pass healthy (acceptable aliases: "ok" to support Node's Terminus and "up" for Java's SpringBoot)
 	// fail unhealthy (acceptable aliases: "error" to support Node's Terminus and "down" for Java's SpringBoot), and
 	// warn healthy, with some concerns.
 	//
@@ -27,19 +27,19 @@ const (
 	// status: (required) indicates whether the service status is acceptable
 	// or not.  API publishers SHOULD use following values for the field:
 	// The value of the status field is case-insensitive and is tightly
-	// related with the HTTP response code returned by the health endpoint.
-	// For "pass" status, HTTP response code in the 2xx-3xx range MUST be
-	// used.  For "fail" status, HTTP response code in the 4xx-5xx range
+	// related with the HTTP Response code returned by the health endpoint.
+	// For "pass" status, HTTP Response code in the 2xx-3xx range MUST be
+	// used.  For "fail" status, HTTP Response code in the 4xx-5xx range
 	// MUST be used.  In case of the "warn" status, endpoints MUST return
 	// HTTP status in the 2xx-3xx range, and additional information SHOULD
-	// be provided, utilizing optional fields of the response.
-	pass status = "pass"
-	fail status = "fail"
+	// be provided, utilizing optional fields of the Response.
+	Pass status = "pass"
+	Fail status = "fail"
 	warn status = "warn"
 )
 
 func (s status) ToHTTPStatus() int {
-	if s == pass || s == warn {
+	if s == Pass || s == warn {
 		return http.StatusOK
 	}
 	return http.StatusFailedDependency
@@ -47,8 +47,8 @@ func (s status) ToHTTPStatus() int {
 
 type checks map[string][]componentStatus
 
-// response is the data returned by the health endpoint, which will be marshaled to JSON format
-type response struct {
+// Response is the data returned by the health endpoint, which will be marshaled to JSON format
+type Response struct {
 	Status      status `json:"status"`
 	Description string `json:"description"`      // a human-friendly description of the service
 	Checks      checks `json:"checks,omitempty"` // The Checks Object, should be omitted on installation route
@@ -65,8 +65,8 @@ type componentStatus struct {
 
 // Check is the health check API handler
 func Check(w http.ResponseWriter, r *http.Request) {
-	rsp := response{
-		Status:      pass,
+	rsp := Response{
+		Status:      Pass,
 		Description: setting.AppName,
 		Checks:      make(checks),
 	}
@@ -77,14 +77,15 @@ func Check(w http.ResponseWriter, r *http.Request) {
 		statuses = append(statuses, checkCache(rsp.Checks))
 	}
 	for _, s := range statuses {
-		if s != pass {
-			rsp.Status = fail
+		if s != Pass {
+			rsp.Status = Fail
 			break
 		}
 	}
 
 	data, _ := json.MarshalIndent(rsp, "", "  ")
 	w.Header().Set("Content-Type", "application/json")
+	w.Header().Set("Cache-Control", "no-store")
 	w.WriteHeader(rsp.Status.ToHTTPStatus())
 	_, _ = w.Write(data)
 }
@@ -93,22 +94,22 @@ func Check(w http.ResponseWriter, r *http.Request) {
 func checkDatabase(ctx context.Context, checks checks) status {
 	st := componentStatus{}
 	if err := db.GetEngine(ctx).Ping(); err != nil {
-		st.Status = fail
+		st.Status = Fail
 		st.Time = getCheckTime()
 		log.Error("database ping failed with error: %v", err)
 	} else {
-		st.Status = pass
+		st.Status = Pass
 		st.Time = getCheckTime()
 	}
 
-	if setting.Database.Type.IsSQLite3() && st.Status == pass {
+	if setting.Database.Type.IsSQLite3() && st.Status == Pass {
 		if !setting.EnableSQLite3 {
-			st.Status = fail
+			st.Status = Fail
 			st.Time = getCheckTime()
 			log.Error("SQLite3 health check failed with error: %v", "this Forgejo binary is built without SQLite3 enabled")
 		} else {
 			if _, err := os.Stat(setting.Database.Path); err != nil {
-				st.Status = fail
+				st.Status = Fail
 				st.Time = getCheckTime()
 				log.Error("SQLite3 file exists check failed with error: %v", err)
 			}
@@ -123,11 +124,11 @@ func checkDatabase(ctx context.Context, checks checks) status {
 func checkCache(checks checks) status {
 	st := componentStatus{}
 	if err := cache.GetCache().Ping(); err != nil {
-		st.Status = fail
+		st.Status = Fail
 		st.Time = getCheckTime()
 		log.Error("cache ping failed with error: %v", err)
 	} else {
-		st.Status = pass
+		st.Status = Pass
 		st.Time = getCheckTime()
 	}
 	checks["cache:ping"] = []componentStatus{st}