FEAT: Init Discovery Service

discovery/internal/handlers/handlers.go

@@ -0,0 +1,41 @@
+package handlers
+
+import (
+	"encoding/json"
+	"log"
+	"net/http"
+	"thamanyah/discovery/internal/api"
+)
+
+// Health is the liveness probe the ALB target group polls.
+//
+//	@Summary		Health check
+//	@Description	Reports that the service is up and serving. Used as the ALB target group health check; it does not verify the database connection.
+//	@Tags			system
+//	@Produce		json
+//	@Success		200	{object}	api.HealthResponse
+//	@Router			/health [get]
+func Health(w http.ResponseWriter, r *http.Request) {
+	writeJSON(w, http.StatusOK, api.HealthResponse{Status: "ok"})
+}
+
+func writeJSON(w http.ResponseWriter, status int, body any) {
+	writeJSONContent(w, "application/json", status, body)
+}
+
+func writeProblem(w http.ResponseWriter, status int, title, detail string) {
+	writeJSONContent(w, "application/problem+json", status, api.ProblemDetails{
+		Type:   "about:blank",
+		Title:  title,
+		Status: status,
+		Detail: detail,
+	})
+}
+
+func writeJSONContent(w http.ResponseWriter, contentType string, status int, body any) {
+	w.Header().Set("Content-Type", contentType)
+	w.WriteHeader(status)
+	if err := json.NewEncoder(w).Encode(body); err != nil {
+		log.Printf("Something Went Wrong Writing The Response: %s", err)
+	}
+}