Files
ttstd-infinite-canvas/backend/internal/handler/user_data.go
ddcat666 a0f025aa96 feat(platform): 日志管理 - 统一日志出口并屏蔽查询与 Agent 流式事件日志
新增 internal/logging,slog、标准库 log、GORM 与 Gin 访问日志共用同一 Handler,由 CANVAS_LOG_LEVEL / CANVAS_LOG_FORMAT 控制。info 级别不再输出成功的查询类请求、成功 SQL、message_end 等 Agent 流式事件和常规画布自动保存;4xx/5xx、慢请求、慢 SQL、SQL 失败与 panic 仍会记录,SQL 不内联参数值。
2026-09-30 03:33:34 +08:00

793 lines
22 KiB
Go

package handler
import (
"bytes"
"compress/gzip"
"encoding/json"
"errors"
"fmt"
"log/slog"
"net/http"
"strconv"
"strings"
"time"
"infinite-canvas/backend/internal/model"
"infinite-canvas/backend/internal/service"
"github.com/gin-gonic/gin"
)
func RegisterUserDataRoutes(r *gin.RouterGroup, svc *service.Service) {
r.POST("/resources/access", func(c *gin.Context) {
user, err := currentUser(c, svc)
if err != nil {
failService(c, err)
return
}
c.Request.Body = http.MaxBytesReader(c.Writer, c.Request.Body, 64<<10)
var req []service.ResourceAccessRequest
if err := c.ShouldBindJSON(&req); err != nil {
fail(c, http.StatusBadRequest, err)
return
}
result, err := svc.ResourceAccessBatch(user.ID, req)
if err != nil {
failService(c, err)
return
}
ok(c, gin.H{"items": result})
})
r.POST("/assets/batch-delete", func(c *gin.Context) {
user, err := currentUser(c, svc)
if err != nil {
failService(c, err)
return
}
c.Request.Body = http.MaxBytesReader(c.Writer, c.Request.Body, 256<<10)
var ids []string
if err := c.ShouldBindJSON(&ids); err != nil {
fail(c, http.StatusBadRequest, err)
return
}
if err := svc.PurgeUserAssets(user.ID, ids); err != nil {
failService(c, err)
return
}
ok(c, gin.H{"ids": ids})
})
r.POST("/assets/batch", func(c *gin.Context) {
user, err := currentUser(c, svc)
if err != nil {
failService(c, err)
return
}
c.Request.Body = http.MaxBytesReader(c.Writer, c.Request.Body, 16<<10)
var req struct {
IDs []string `json:"ids"`
}
if err := c.ShouldBindJSON(&req); err != nil {
fail(c, http.StatusBadRequest, err)
return
}
assets, err := svc.UserAssetsByIDs(user.ID, req.IDs)
if err != nil {
failService(c, err)
return
}
ok(c, gin.H{"assets": assets})
})
r.GET("/settings/prompt-templates", func(c *gin.Context) {
user, err := currentUser(c, svc)
if err != nil {
failService(c, err)
return
}
preferences, err := svc.UserPromptPreferences(user)
if err != nil {
failService(c, err)
return
}
ok(c, gin.H{"preferences": preferences})
})
r.PATCH("/settings/prompt-templates/:operation", func(c *gin.Context) {
user, err := currentUser(c, svc)
if err != nil {
failService(c, err)
return
}
c.Request.Body = http.MaxBytesReader(c.Writer, c.Request.Body, 64<<10)
var req service.UserPromptCustomizationRequest
if err := c.ShouldBindJSON(&req); err != nil {
fail(c, http.StatusBadRequest, err)
return
}
customization, err := svc.UpdateUserPromptCustomization(user, c.Param("operation"), req)
if err != nil {
failService(c, err)
return
}
ok(c, gin.H{"customization": customization})
})
r.DELETE("/settings/prompt-templates/:operation", func(c *gin.Context) {
user, err := currentUser(c, svc)
if err != nil {
failService(c, err)
return
}
if err := svc.ResetUserPromptCustomization(user, c.Param("operation")); err != nil {
failService(c, err)
return
}
ok(c, gin.H{"ok": true})
})
r.GET("/settings/oss", func(c *gin.Context) {
user, err := currentUser(c, svc)
if err != nil {
failService(c, err)
return
}
setting, err := svc.UserOSSSetting(user)
if err != nil {
failService(c, err)
return
}
ok(c, gin.H{"setting": setting})
})
r.PATCH("/settings/oss", func(c *gin.Context) {
user, err := currentUser(c, svc)
if err != nil {
failService(c, err)
return
}
c.Request.Body = http.MaxBytesReader(c.Writer, c.Request.Body, 64<<10)
var req service.OSSSettingRequest
if err := c.ShouldBindJSON(&req); err != nil {
fail(c, http.StatusBadRequest, err)
return
}
setting, err := svc.UpdateUserOSSSetting(user, req)
if err != nil {
failService(c, err)
return
}
ok(c, gin.H{"setting": setting})
})
r.POST("/settings/oss/test", func(c *gin.Context) {
user, err := currentUser(c, svc)
if err != nil {
failService(c, err)
return
}
if !enforceRateLimit(c, "user-storage-test:"+user.ID, 6, time.Minute) {
return
}
c.Request.Body = http.MaxBytesReader(c.Writer, c.Request.Body, 64<<10)
var req service.OSSSettingRequest
if err := c.ShouldBindJSON(&req); err != nil {
fail(c, http.StatusBadRequest, err)
return
}
result, err := svc.TestUserOSSSetting(user, req)
if err != nil {
failService(c, err)
return
}
ok(c, result)
})
r.GET("/resources", func(c *gin.Context) {
user, err := currentUser(c, svc)
if err != nil {
failService(c, err)
return
}
pageSize, err := parsePositiveQueryInt(c.Query("pageSize"), 200)
if err != nil {
fail(c, http.StatusBadRequest, err)
return
}
resources, err := svc.Resources(user.ID, pageSize)
if err != nil {
failService(c, err)
return
}
ok(c, gin.H{"resources": resources})
})
r.GET("/resources/storage-usage", func(c *gin.Context) {
user, err := currentUser(c, svc)
if err != nil {
failService(c, err)
return
}
usage, err := svc.AccountFileStorageUsage(user.ID)
if err != nil {
failService(c, err)
return
}
ok(c, gin.H{"usage": usage})
})
r.POST("/resources/:id/ark-private-asset", func(c *gin.Context) {
user, err := currentUser(c, svc)
if err != nil {
failService(c, err)
return
}
policy, available := loadRuntimePolicy(c, svc)
if !available || !enforceRateLimit(c, "resources-ark-private-asset:"+user.ID, policy.Request.ResourceImportPerMinute, time.Minute) {
return
}
result, err := svc.SyncResourceToArkPrivateAsset(c.Request.Context(), user, c.Param("id"))
if err != nil {
failService(c, err)
return
}
ok(c, gin.H{"sync": result})
})
r.POST("/resources", func(c *gin.Context) {
user, err := currentUser(c, svc)
if err != nil {
failService(c, err)
return
}
policy, available := loadRuntimePolicy(c, svc)
if !available || !enforceRateLimit(c, "resources-upload:"+user.ID, policy.Request.ResourceUploadPerMinute, time.Minute) {
return
}
c.Request.Body = http.MaxBytesReader(c.Writer, c.Request.Body, (policy.Resource.ResourceUploadMB<<20)+(1<<20))
file, err := c.FormFile("file")
if err != nil {
var maxErr *http.MaxBytesError
if errors.As(err, &maxErr) {
// 超 MaxBytesReader 上限时 FormFile 返回英文 http 错误,转成与 service 配额校验一致的中文文案。
fail(c, http.StatusBadRequest, fmt.Errorf("单个上传文件必须小于 %dMB", policy.Resource.ResourceUploadMB))
return
}
fail(c, http.StatusBadRequest, err)
return
}
width, _ := strconv.Atoi(c.PostForm("width"))
height, _ := strconv.Atoi(c.PostForm("height"))
durationMs, _ := strconv.ParseInt(c.PostForm("durationMs"), 10, 64)
resource, err := svc.UploadResource(user.ID, file, c.PostForm("kind"), width, height, durationMs, c.GetHeader("X-Idempotency-Key"))
if err != nil {
failService(c, err)
return
}
ok(c, gin.H{"resource": resource})
})
r.POST("/resources/import", func(c *gin.Context) {
user, err := currentUser(c, svc)
if err != nil {
failService(c, err)
return
}
policy, available := loadRuntimePolicy(c, svc)
if !available || !enforceRateLimit(c, "resources-import:"+user.ID, policy.Request.ResourceImportPerMinute, time.Minute) {
return
}
c.Request.Body = http.MaxBytesReader(c.Writer, c.Request.Body, 64<<10)
var req struct {
URL string `json:"url"`
Kind string `json:"kind"`
Width int `json:"width"`
Height int `json:"height"`
DurationMs int64 `json:"durationMs"`
}
if err := c.ShouldBindJSON(&req); err != nil {
fail(c, http.StatusBadRequest, err)
return
}
resource, err := svc.ImportResourceURL(user.ID, req.URL, req.Kind, req.Width, req.Height, req.DurationMs, c.GetHeader("X-Idempotency-Key"))
if err != nil {
failService(c, err)
return
}
ok(c, gin.H{"resource": resource})
})
r.GET("/resources/:id", func(c *gin.Context) {
user, err := currentUser(c, svc)
if err != nil {
failService(c, err)
return
}
resource, err := svc.Resource(user.ID, c.Param("id"))
if err != nil {
fail(c, http.StatusNotFound, err)
return
}
ok(c, gin.H{"resource": resource})
})
r.GET("/resources/:id/file", func(c *gin.Context) {
user, err := currentUser(c, svc)
if err != nil {
failService(c, err)
return
}
options := resourceAccessOptions(c)
delivery, err := svc.PrepareResourceDelivery(user.ID, c.Param("id"), options, c.GetHeader("Range"))
if err != nil {
failService(c, err)
return
}
serveResourceDelivery(c, delivery, "private, no-cache", "")
})
publicResourceHandler := func(c *gin.Context) {
options := resourceAccessOptions(c)
delivery, err := svc.PreparePublicResourceDelivery(c.Param("id"), c.Query("expires"), c.Query("signature"), options, c.GetHeader("Range"))
if err != nil {
failService(c, err)
return
}
serveResourceDelivery(c, delivery, "public, max-age=0, must-revalidate", "")
}
r.GET("/public/resources/:id/file", publicResourceHandler)
r.GET("/public/resources/:id/file/:filename", publicResourceHandler)
r.GET("/assets", func(c *gin.Context) {
user, err := currentUser(c, svc)
if err != nil {
failService(c, err)
return
}
if _, paged := c.GetQuery("page"); paged || hasUserAssetPageFilters(c) {
page, pageSize, pageErr := parsePaginationQuery(c, 40)
if pageErr != nil {
fail(c, http.StatusBadRequest, pageErr)
return
}
var folderID *string
if value, present := c.GetQuery("folderId"); present {
folderID = &value
}
assets, pageErr := svc.UserAssetsPage(user.ID, page, pageSize, service.UserAssetPageFilter{
Kind: c.Query("kind"), Category: c.Query("category"), FolderID: folderID,
Uncategorized: c.Query("uncategorized") == "1", Status: c.Query("status"), Query: c.Query("q"),
})
if pageErr != nil {
failService(c, pageErr)
return
}
ok(c, assets)
return
}
assets, err := svc.UserAssetSummaries(user.ID)
if err != nil {
failService(c, err)
return
}
ok(c, gin.H{"assets": assets})
})
r.GET("/asset-folders", func(c *gin.Context) {
user, err := currentUser(c, svc)
if err != nil {
failService(c, err)
return
}
folders, err := svc.AssetFolders(user.ID)
if err != nil {
failService(c, err)
return
}
ok(c, gin.H{"folders": folders})
})
r.POST("/asset-folders", func(c *gin.Context) {
user, err := currentUser(c, svc)
if err != nil {
failService(c, err)
return
}
var req service.CreateAssetFolderRequest
if err := c.ShouldBindJSON(&req); err != nil {
fail(c, http.StatusBadRequest, err)
return
}
folder, err := svc.CreateAssetFolder(user.ID, req)
if err != nil {
failService(c, err)
return
}
ok(c, gin.H{"folder": folder})
})
r.PATCH("/asset-folders/:id", func(c *gin.Context) {
user, err := currentUser(c, svc)
if err != nil {
failService(c, err)
return
}
var req service.UpdateAssetFolderRequest
if err := c.ShouldBindJSON(&req); err != nil {
fail(c, http.StatusBadRequest, err)
return
}
folder, err := svc.UpdateAssetFolder(user.ID, c.Param("id"), req)
if err != nil {
failService(c, err)
return
}
ok(c, gin.H{"folder": folder})
})
r.DELETE("/asset-folders/:id", func(c *gin.Context) {
user, err := currentUser(c, svc)
if err != nil {
failService(c, err)
return
}
if err := svc.DeleteAssetFolder(user.ID, c.Param("id")); err != nil {
failService(c, err)
return
}
ok(c, gin.H{"id": c.Param("id")})
})
r.PATCH("/assets/folder", func(c *gin.Context) {
user, err := currentUser(c, svc)
if err != nil {
failService(c, err)
return
}
var req service.MoveUserAssetsRequest
if err := c.ShouldBindJSON(&req); err != nil {
fail(c, http.StatusBadRequest, err)
return
}
if err := svc.MoveUserAssetsToFolder(user.ID, req); err != nil {
failService(c, err)
return
}
ok(c, gin.H{"assetIds": req.AssetIDs, "folderId": req.FolderID})
})
r.GET("/user-data/snapshot", func(c *gin.Context) {
user, err := currentUser(c, svc)
if err != nil {
failService(c, err)
return
}
snapshot, err := svc.UserDataSnapshot(user.ID)
if err != nil {
failService(c, err)
return
}
ok(c, snapshot)
})
r.GET("/assets/:id", func(c *gin.Context) {
user, err := currentUser(c, svc)
if err != nil {
failService(c, err)
return
}
asset, err := svc.UserAsset(user.ID, c.Param("id"))
if err != nil {
fail(c, http.StatusNotFound, err)
return
}
ok(c, gin.H{"asset": asset})
})
r.PUT("/assets/:id", func(c *gin.Context) {
user, err := currentUser(c, svc)
if err != nil {
failService(c, err)
return
}
policy, available := loadRuntimePolicy(c, svc)
if !available || !enforceRateLimit(c, "assets-write:"+user.ID, policy.Request.AssetWritePerMinute, time.Minute) {
return
}
c.Request.Body = http.MaxBytesReader(c.Writer, c.Request.Body, 5<<20)
var req struct {
Asset json.RawMessage `json:"asset"`
}
if err := c.ShouldBindJSON(&req); err != nil {
fail(c, http.StatusBadRequest, err)
return
}
var identity struct {
ID string `json:"id"`
}
if json.Unmarshal(req.Asset, &identity) != nil || identity.ID != c.Param("id") {
fail(c, http.StatusBadRequest, service.BadAuthRequest("素材 ID 与请求路径不一致"))
return
}
asset, err := svc.UpsertUserAsset(user.ID, req.Asset)
if err != nil {
failService(c, err)
return
}
ok(c, gin.H{"asset": asset})
})
r.DELETE("/assets/:id", func(c *gin.Context) {
user, err := currentUser(c, svc)
if err != nil {
failService(c, err)
return
}
if err := svc.PurgeUserAsset(user.ID, c.Param("id")); err != nil {
failService(c, err)
return
}
ok(c, gin.H{"id": c.Param("id")})
})
r.GET("/canvas-projects", func(c *gin.Context) {
user, err := currentUser(c, svc)
if err != nil {
failService(c, err)
return
}
if c.Query("page") != "" {
page, pageSize, pageErr := parsePaginationQuery(c, 40)
if pageErr != nil {
fail(c, http.StatusBadRequest, pageErr)
return
}
result, pageErr := svc.UserCanvasProjectsPage(user.ID, page, pageSize, c.Query("projectId"), c.Query("q"), c.Query("sort"))
if pageErr != nil {
failService(c, pageErr)
return
}
ok(c, result)
return
}
projects, err := svc.UserCanvasProjectSummaries(user.ID)
if err != nil {
failService(c, err)
return
}
ok(c, gin.H{"projects": projects})
})
r.GET("/canvas-projects/:id", func(c *gin.Context) {
user, err := currentUser(c, svc)
if err != nil {
failService(c, err)
return
}
metadata, err := svc.UserCanvasProjectMetadata(user.ID, c.Param("id"))
if err != nil {
fail(c, http.StatusNotFound, err)
return
}
etag := canvasProjectResponseETag(metadata)
c.Header("ETag", etag)
c.Header("Cache-Control", "private, no-cache")
addVaryHeader(c, "Accept-Encoding")
if ifNoneMatch(c.GetHeader("If-None-Match"), etag) {
c.Status(http.StatusNotModified)
return
}
project, err := svc.UserCanvasProject(user.ID, c.Param("id"))
if err != nil {
fail(c, http.StatusNotFound, err)
return
}
okCanvasProject(c, project)
})
r.GET("/canvas-projects/:id/history", func(c *gin.Context) {
user, err := currentUser(c, svc)
if err != nil {
failService(c, err)
return
}
result, err := svc.CanvasHistory(user.ID, c.Param("id"))
if err != nil {
failService(c, err)
return
}
ok(c, result)
})
r.GET("/canvas-projects/:id/history/:snapshotId", func(c *gin.Context) {
user, err := currentUser(c, svc)
if err != nil {
failService(c, err)
return
}
snapshot, err := svc.CanvasHistorySnapshot(user.ID, c.Param("id"), c.Param("snapshotId"))
if err != nil {
failService(c, err)
return
}
ok(c, gin.H{"snapshot": snapshot, "project": json.RawMessage(snapshot.PayloadJSON)})
})
r.POST("/canvas-projects/:id/history/:snapshotId/restore", func(c *gin.Context) {
user, err := currentUser(c, svc)
if err != nil {
failService(c, err)
return
}
policy, available := loadRuntimePolicy(c, svc)
if !available || !enforceRateLimit(c, "canvas-write:"+user.ID, policy.Request.CanvasWritePerMinute, time.Minute) {
return
}
c.Request.Body = http.MaxBytesReader(c.Writer, c.Request.Body, 1024)
var req struct {
Revision *int64 `json:"revision"`
}
if err := c.ShouldBindJSON(&req); err != nil {
fail(c, http.StatusBadRequest, service.BadAuthRequest("恢复请求格式错误"))
return
}
project, err := svc.RestoreCanvasHistory(user.ID, c.Param("id"), c.Param("snapshotId"), req.Revision)
if err != nil {
failService(c, err)
return
}
slog.Info("canvas_restore", "request_id", RequestID(c), "trace_id", TraceID(c), "actor", user.ID, "canvas", c.Param("id"), "snapshot", c.Param("snapshotId"), "base_revision", *req.Revision, "revision", project.Revision)
ok(c, gin.H{"project": project})
})
r.PUT("/canvas-projects/:id", func(c *gin.Context) {
user, err := currentUser(c, svc)
if err != nil {
failService(c, err)
return
}
policy, available := loadRuntimePolicy(c, svc)
if !available || !enforceRateLimit(c, "canvas-write:"+user.ID, policy.Request.CanvasWritePerMinute, time.Minute) {
return
}
c.Request.Body = http.MaxBytesReader(c.Writer, c.Request.Body, 5<<20)
var req struct {
Project json.RawMessage `json:"project"`
RepairMissingResources bool `json:"repairMissingResources"`
}
if err := c.ShouldBindJSON(&req); err != nil {
fail(c, http.StatusBadRequest, err)
return
}
var identity struct {
ID string `json:"id"`
}
if json.Unmarshal(req.Project, &identity) != nil || identity.ID != c.Param("id") {
fail(c, http.StatusBadRequest, service.BadAuthRequest("画布 ID 与请求路径不一致"))
return
}
var audit struct {
Revision *int64 `json:"revision"`
Nodes []json.RawMessage `json:"nodes"`
Connections []json.RawMessage `json:"connections"`
}
_ = json.Unmarshal(req.Project, &audit)
baseRevision := int64(-1)
if audit.Revision != nil {
baseRevision = *audit.Revision
}
var project service.UserDataSummary
if req.RepairMissingResources {
project, err = svc.RepairUserCanvasProject(user.ID, req.Project)
} else {
project, err = svc.UpsertUserCanvasProject(user.ID, req.Project)
}
defer func() {
nodesBefore, nodesAfter := -1, len(audit.Nodes)
if project.SaveAudit != nil {
nodesBefore, nodesAfter = project.SaveAudit.NodesBefore, project.SaveAudit.NodesAfter
}
// Metadata only: never log prompts, media URLs, cookies, or the canvas payload.
// 自动保存非常频繁:常规保存只在 debug 输出;节点减少(可能丢数据)或保存失败才提升级别。
level := slog.LevelDebug
switch {
case c.Writer.Status() >= http.StatusBadRequest:
level = slog.LevelWarn
case nodesBefore >= 0 && nodesAfter < nodesBefore:
level = slog.LevelInfo
}
slog.Log(c.Request.Context(), level, "canvas_save", "request_id", RequestID(c), "trace_id", TraceID(c), "actor", user.ID, "canvas", identity.ID, "base_revision", baseRevision, "revision", project.Revision, "nodes_before", nodesBefore, "nodes_after", nodesAfter, "connections", len(audit.Connections), "status", c.Writer.Status())
}()
if err != nil {
failService(c, err)
return
}
ok(c, gin.H{"project": project})
})
r.DELETE("/canvas-projects/:id", func(c *gin.Context) {
user, err := currentUser(c, svc)
if err != nil {
failService(c, err)
return
}
if err := svc.DeleteUserCanvasProject(user.ID, c.Param("id")); err != nil {
failService(c, err)
return
}
ok(c, gin.H{"id": c.Param("id")})
})
}
func hasUserAssetPageFilters(c *gin.Context) bool {
for _, key := range []string{"pageSize", "kind", "category", "folderId", "uncategorized", "status", "q"} {
if _, present := c.GetQuery(key); present {
return true
}
}
return false
}
func okCanvasProject(c *gin.Context, project json.RawMessage) {
payload, err := json.Marshal(gin.H{
"code": service.CodeOK,
"data": gin.H{"project": project},
"msg": "ok",
})
if err != nil {
failInternal(c, http.StatusInternalServerError, err)
return
}
if len(payload) >= 1024 && acceptsGzip(c.GetHeader("Accept-Encoding")) {
var compressed bytes.Buffer
writer, err := gzip.NewWriterLevel(&compressed, gzip.BestSpeed)
if err != nil {
failInternal(c, http.StatusInternalServerError, err)
return
}
_, writeErr := writer.Write(payload)
closeErr := writer.Close()
if writeErr != nil || closeErr != nil {
failInternal(c, http.StatusInternalServerError, errors.Join(writeErr, closeErr))
return
}
c.Header("Content-Encoding", "gzip")
c.Header("Content-Length", strconv.Itoa(compressed.Len()))
c.Data(http.StatusOK, "application/json; charset=utf-8", compressed.Bytes())
return
}
c.Data(http.StatusOK, "application/json; charset=utf-8", payload)
}
func acceptsGzip(header string) bool {
wildcardAccepted := false
for _, item := range strings.Split(header, ",") {
parts := strings.Split(item, ";")
encoding := strings.TrimSpace(strings.ToLower(parts[0]))
accepted := true
for _, parameter := range parts[1:] {
name, value, found := strings.Cut(strings.TrimSpace(parameter), "=")
if found && strings.EqualFold(strings.TrimSpace(name), "q") {
quality, err := strconv.ParseFloat(strings.TrimSpace(value), 64)
accepted = err == nil && quality > 0
}
}
if encoding == "gzip" {
return accepted
}
if encoding == "*" {
wildcardAccepted = accepted
}
}
return wildcardAccepted
}
func addVaryHeader(c *gin.Context, value string) {
for _, existing := range c.Writer.Header().Values("Vary") {
for _, token := range strings.Split(existing, ",") {
if strings.EqualFold(strings.TrimSpace(token), value) {
return
}
}
}
c.Header("Vary", strings.Join(append(c.Writer.Header().Values("Vary"), value), ", "))
}
func canvasProjectResponseETag(project *model.CanvasProject) string {
return `W/` + strconv.Quote(fmt.Sprintf("canvas-%d", project.Revision))
}
func resourceResponseETag(resource *model.Resource) string {
value := strings.Trim(strings.TrimSpace(resource.ETag), `"`)
if value == "" {
value = fmt.Sprintf("%s-%d-%d", resource.ID, resource.Size, resource.UpdatedAt.UnixNano())
}
return strconv.Quote(value)
}
func ifNoneMatch(header string, etag string) bool {
normalize := func(value string) string {
value = strings.TrimSpace(value)
if len(value) >= 2 && strings.EqualFold(value[:2], "W/") {
return strings.TrimSpace(value[2:])
}
return value
}
etag = normalize(etag)
for _, candidate := range strings.Split(header, ",") {
candidate = normalize(candidate)
if candidate == "*" || candidate == etag {
return true
}
}
return false
}