feat: image variants cache panel

2026-10-08 21:13:32 +02:00
1 parent 951fef18ba
commit d768668014
@@ -0,0 +1,141 @@
+package imagevariant
+
+import (
+	"RenewCMS/api/pkg/apperr"
+	validator "RenewCMS/api/pkg/validator"
+	"RenewCMS/internal/domain/image"
+	"RenewCMS/internal/infrastructure/useCases"
+	"encoding/json"
+	"errors"
+	"math"
+	"net/http"
+
+	validatorlib "github.com/go-playground/validator/v10"
+)
+
+type cacheUnusedResponse struct {
+	Files int   `json:"files"`
+	Bytes int64 `json:"bytes"`
+	Days  int   `json:"days"`
+}
+
+type cacheVariantResponse struct {
+	Name    string `json:"name"`
+	Enabled bool   `json:"enabled"`
+	Files   int    `json:"files"`
+	Bytes   int64  `json:"bytes"`
+}
+
+type cacheImageResponse struct {
+	ID       uint32 `json:"id"`
+	Filename string `json:"filename"`
+	URL      string `json:"url"`
+	Files    int    `json:"files"`
+	Bytes    int64  `json:"bytes"`
+}
+
+type cacheResponse struct {
+	GeneratedFiles     int                    `json:"generated_files"`
+	DiskUsed           int64                  `json:"disk_used"`
+	VariantsDefined    int                    `json:"variants_defined"`
+	VariantsEnabled    int                    `json:"variants_enabled"`
+	VariantsDisabled   int                    `json:"variants_disabled"`
+	RejectedRequests   int                    `json:"rejected_requests"`
+	RejectedWindowDays int                    `json:"rejected_window_days"`
+	Unused             cacheUnusedResponse    `json:"unused"`
+	ByVariant          []cacheVariantResponse `json:"by_variant"`
+	TopImages          []cacheImageResponse   `json:"top_images"`
+}
+
+type cachePurgeRequest struct {
+	Scope   string `json:"scope" validate:"required,oneof=all unused variant image"`
+	Variant string `json:"variant" validate:"required_if=Scope variant"`
+	ImageID int64  `json:"image_id" validate:"required_if=Scope image,omitempty,gt=0,lte=4294967295"`
+}
+
+type cachePurgeResponse struct {
+	Scope       string `json:"scope"`
+	PurgedFiles int    `json:"purged_files"`
+	PurgedBytes int64  `json:"purged_bytes"`
+	FailedFiles int    `json:"failed_files"`
+}
+
+func (r *cachePurgeRequest) ignoreUnusedTargets() {
+	if r.Scope != string(image.CacheScopeVariant) {
+		r.Variant = ""
+	}
+	if r.Scope != string(image.CacheScopeImage) {
+		r.ImageID = 0
+	}
+}
+
+func cacheResponseOf(stats useCases.VariantCacheStats) cacheResponse {
+	response := cacheResponse{
+		GeneratedFiles:     stats.GeneratedFiles,
+		DiskUsed:           stats.DiskUsed,
+		VariantsDefined:    stats.VariantsDefined,
+		VariantsEnabled:    stats.VariantsEnabled,
+		VariantsDisabled:   stats.VariantsDisabled,
+		RejectedRequests:   stats.RejectedRequests,
+		RejectedWindowDays: stats.RejectedWindowDays,
+		Unused:             cacheUnusedResponse{Files: stats.Unused.Files, Bytes: stats.Unused.Bytes, Days: stats.UnusedDays},
+		ByVariant:          make([]cacheVariantResponse, 0, len(stats.ByVariant)),
+		TopImages:          make([]cacheImageResponse, 0, len(stats.TopImages)),
+	}
+	for _, entry := range stats.ByVariant {
+		response.ByVariant = append(response.ByVariant, cacheVariantResponse{Name: entry.Name, Enabled: entry.Enabled, Files: entry.Files, Bytes: entry.Bytes})
+	}
+	for _, top := range stats.TopImages {
+		response.TopImages = append(response.TopImages, cacheImageResponse{ID: top.ID, Filename: top.Filename, URL: top.URL, Files: top.Files, Bytes: top.Bytes})
+	}
+	return response
+}
+
+func (h *Handler) CacheStats(w http.ResponseWriter, _ *http.Request) {
+	stats, err := h.cacheStats.Get()
+	if err != nil {
+		h.writeError(w, "", err)
+		return
+	}
+	writeJSON(w, http.StatusOK, cacheResponseOf(stats))
+}
+
+func (h *Handler) PurgeCache(w http.ResponseWriter, r *http.Request) {
+	var request cachePurgeRequest
+	if err := json.NewDecoder(r.Body).Decode(&request); err != nil {
+		http.Error(w, apperr.BodyErrorMessage, http.StatusBadRequest)
+		return
+	}
+	request.ignoreUnusedTargets()
+	if err := validator.Validate.Struct(request); err != nil {
+		http.Error(w, cachePurgeValidationMessage(err), http.StatusUnprocessableEntity)
+		return
+	}
+
+	result, err := h.purgeCache.Purge(r.Context(), useCases.PurgeVariantCacheCommand{
+		Scope:   image.CachePurgeScope(request.Scope),
+		Variant: request.Variant,
+		ImageID: uint32(min(request.ImageID, math.MaxUint32)),
+	})
+	if err != nil {
+		h.writePurgeCacheError(w, err)
+		return
+	}
+	writeJSON(w, http.StatusOK, cachePurgeResponse{Scope: string(result.Scope), PurgedFiles: result.Files, PurgedBytes: result.Bytes, FailedFiles: result.Failed})
+}
+
+func cachePurgeValidationMessage(err error) string {
+	var failures validatorlib.ValidationErrors
+	if errors.As(err, &failures) && len(failures) > 0 && failures[0].StructField() != "Scope" {
+		return apperr.CachePurgeTargetErrorMessage
+	}
+	return apperr.CachePurgeScopeErrorMessage
+}
+
+func (h *Handler) writePurgeCacheError(w http.ResponseWriter, err error) {
+	if errors.Is(err, image.ErrImageNotFound) {
+		http.Error(w, apperr.ImageNotFoundErrorMessage, http.StatusNotFound)
+		return
+	}
+	h.writeError(w, "", err)
+}