feat: billing layer v1.3.86 — PostgreSQL statistics

- internal/billing: Store interface + pgStore (pgx/v5 pool) + NoopStore
- factory.go: NewStore() from BILLING_DSN env var (NoopStore fallback)
- Server.billing: injected into Config, initialized in main
- handleInvokeFunction: record invocation (TriggerConsole)
- invokeInternalFunction: record invocation (TriggerHTTP)
- handleCreateFunction: record event_type=create
- handleCloneFunction: record event_type=clone
- handleDeleteFunction: record event_type=delete
- table: invocations (namespace, function_name, trigger_type, duration_ms, status_code...)
- BILLING_DSN added to console.yaml
- pgx/v5 added to go.mod/go.sum

console/internal/api/function_invoke.go

@@ -22,6 +22,7 @@ import (
 	"strings"
 	"time"
 
+	"fission-console/internal/billing"
 	"fission-console/internal/fission"
 
 	apierrors "k8s.io/apimachinery/pkg/api/errors"
@@ -202,9 +203,26 @@ func (s *Server) handleInvokeFunction(w http.ResponseWriter, r *http.Request, na
 	defer resp.Body.Close()
 
 	respBody, _ := io.ReadAll(resp.Body)
+
+	durationMS := time.Since(start).Milliseconds()
+	s.billing.RecordInvocation(billing.Invocation{
+		Namespace:     ns,
+		FunctionName:  name,
+		TriggerType:   billing.TriggerConsole,
+		Route:         invokeURL,
+		HTTPMethod:    invokeMethod,
+		StartedAt:     start,
+		DurationMS:    durationMS,
+		StatusCode:    resp.StatusCode,
+		RequestBytes:  int64(len(bodyBytes)),
+		ResponseBytes: int64(len(respBody)),
+		RecordedBy:    "console",
+		EventType:     "invoke",
+	})
+
 	writeAnyJSON(w, http.StatusOK, map[string]any{
 		"status":       resp.StatusCode,
-		"latency_ms":   time.Since(start).Milliseconds(),
+		"latency_ms":   durationMS,
 		"response_raw": string(respBody),
 	})
 }
@@ -311,9 +329,26 @@ func (s *Server) invokeInternalFunction(w http.ResponseWriter, r *http.Request,
 	defer resp.Body.Close()
 
 	respBody, _ := io.ReadAll(resp.Body)
+
+	durationMS := time.Since(start).Milliseconds()
+	s.billing.RecordInvocation(billing.Invocation{
+		Namespace:     namespace,
+		FunctionName:  functionName,
+		TriggerType:   billing.TriggerHTTP,
+		Route:         extraPath,
+		HTTPMethod:    r.Method,
+		StartedAt:     start,
+		DurationMS:    durationMS,
+		StatusCode:    resp.StatusCode,
+		RequestBytes:  int64(len(bodyBytes)),
+		ResponseBytes: int64(len(respBody)),
+		RecordedBy:    "console",
+		EventType:     "invoke",
+	})
+
 	writeAnyJSON(w, http.StatusOK, map[string]any{
 		"status":       resp.StatusCode,
-		"latency_ms":   time.Since(start).Milliseconds(),
+		"latency_ms":   durationMS,
 		"response_raw": string(respBody),
 	})
 }