{"record":{"id":"08ee1f0f719b966d","repo":"flipped-aurora/gin-vue-admin","slug":"api-w-08ee1f","errorCode":null,"errorMessage":"批量分配API权限失败: %w","messagePattern":"批量分配API权限失败: %w","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"server/mcp/role_api_batch_assigner.go","lineNumber":115,"sourceCode":"\t\t\tPath:          path,\n\t\t\tMethod:        method,\n\t\t\tAdded:         added,\n\t\t\tAlreadyExists: !added,\n\t\t})\n\t\tif added {\n\t\t\tresult.AddedCount++\n\t\t\tanyAdded = true\n\t\t} else {\n\t\t\tresult.SkippedCount++\n\t\t}\n\t}\n\n\tif anyAdded {\n\t\tif _, err := postUpstream[map[string]any](ctx, \"/casbin/updateCasbin\", map[string]any{\n\t\t\t\"authorityId\": authorityID,\n\t\t\t\"casbinInfos\": updated,\n\t\t}); err != nil {\n\t\t\treturn nil, fmt.Errorf(\"批量分配API权限失败: %w\", err)\n\t\t}\n\t}\n\n\tresult.TotalPolicies = len(updated)\n\tresult.Message = fmt.Sprintf(\"角色 %d 批量授权完成：新增 %d 条,已存在跳过 %d 条,当前共 %d 条策略\",\n\t\tauthorityID, result.AddedCount, result.SkippedCount, result.TotalPolicies)\n\treturn textResultWithJSON(\"角色API权限批量分配结果：\", result)\n}\n\n// parseAPIItems 解析 apis 参数,支持 JSON 数组[{path,method}]与\"METHOD /path\"逗号分隔字符串双格式,\n// 批内按 归一化path+method 去重\nfunc parseAPIItems(v any) ([]systemReq.CasbinInfo, error) {\n\tif v == nil {\n\t\treturn nil, nil\n\t}\n\tvar items []systemReq.CasbinInfo\n\n\tappendItem := func(path, method string) {","sourceCodeStart":97,"sourceCodeEnd":133,"githubUrl":"https://github.com/flipped-aurora/gin-vue-admin/blob/3136500ef380842b0eb6c4daa87c3f8a47fcf9e0/server/mcp/role_api_batch_assigner.go#L97-L133","documentation":"This error wraps any failure returned by the upstream `/casbin/updateCasbin` HTTP endpoint when the role-API batch assigner flushes the accumulated new Casbin policies. The `%w` keeps the underlying transport or server error intact. It means the local batch computation succeeded but persisting the policy changes to the server failed.","triggerScenarios":"Calling the batch API-permission assignment MCP tool where at least one policy was newly added and the POST to /casbin/updateCasbin returns non-nil (network failure, upstream 4xx/5xx, invalid authorityId, malformed casbinInfos).","commonSituations":"Upstream gva server down or restarted mid-session; JWT token expired so upstream returns 401; authorityId references a role deleted on the server; proxy/firewall blocking the internal API route.","solutions":["Inspect the wrapped cause (`%w`) to see if it is a network error or an upstream API error response","Verify the MCP upstream base URL and that the gva server is running and reachable","Re-authenticate: an expired JWT on /casbin/updateCasbin is a common cause; refresh the token","Confirm authorityId exists via the role query tool before assigning APIs","Retry the operation; assignment is idempotent for already-existing policies (they are skipped)"],"exampleFix":"// before\n_, err := postUpstream[map[string]any](ctx, \"/casbin/updateCasbin\", payload)\n// after\nif _, err := postUpstream[map[string]any](ctx, \"/casbin/updateCasbin\", payload); err != nil {\n    log.Printf(\"casbin update failed (authorityId=%d, policies=%d): %v\", authorityID, len(updated), err)\n    return nil, fmt.Errorf(\"批量分配API权限失败: %w\", err)\n}","handlingStrategy":"try-catch","validationCode":"// verify role exists before batch assignment\nrole, err := fetchAuthority(ctx, authorityID)\nif err != nil {\n    return fmt.Errorf(\"role %d not found: %w\", authorityID, err)\n}","typeGuard":"func isValidAuthority(id uint, known map[uint]struct{}) bool {\n    _, ok := known[id]\n    return ok\n}","tryCatchPattern":"result, err := assigner.Handle(ctx, args)\nif err != nil {\n    var upstreamErr *UpstreamError\n    if errors.As(err, &upstreamErr) {\n        // retry once or refresh token before surfacing\n    }\n    return err\n}","preventionTips":["Confirm the role exists before assignment","Keep the MCP-to-server JWT fresh","Check server health before large batch operations","Rely on idempotency: re-running skips existing policies"],"tags":["mcp","casbin","upstream-api","network"],"backgroundTag":"upstream-request-failed","analyzedSha":"3136500ef380842b0eb6c4daa87c3f8a47fcf9e0","analyzedAt":"2026-08-31T13:50:02.721Z","schemaVersion":2},"datasetVersion":"2026-08-31T19:17:28.585Z"}