{"record":{"id":"65add3e988eb2715","repo":"flipped-aurora/gin-vue-admin","slug":"w-65add3","errorCode":null,"errorMessage":"获取部门树失败: %w","messagePattern":"获取部门树失败: %w","errorType":"http","errorClass":null,"httpStatus":null,"severity":"error","filePath":"server/mcp/org_common.go","lineNumber":159,"sourceCode":"\t}\n\treturn true\n}\n\n// flattenDeptTree 把部门树摊平成 id→名称 映射,供存在性校验与名称补全\nfunc flattenDeptTree(list []system.SysDepartment, into map[uint]string) {\n\tfor i := range list {\n\t\tinto[list[i].ID] = list[i].Name\n\t\tif len(list[i].Children) > 0 {\n\t\t\tflattenDeptTree(list[i].Children, into)\n\t\t}\n\t}\n}\n\n// fetchDeptIndex 拉取部门树并摊平,一次上游调用完成全部部门ID校验\nfunc fetchDeptIndex(ctx context.Context) (map[uint]string, error) {\n\tresp, err := postUpstream[[]system.SysDepartment](ctx, \"/department/getDepartmentList\", map[string]any{})\n\tif err != nil {\n\t\treturn nil, fmt.Errorf(\"获取部门树失败: %w\", err)\n\t}\n\tindex := make(map[uint]string)\n\tflattenDeptTree(resp.Data, index)\n\treturn index, nil\n}\n\n// findAuthorityInTree 在角色树中按 authorityId 查找角色\nfunc findAuthorityInTree(list []system.SysAuthority, id uint) *system.SysAuthority {\n\tfor i := range list {\n\t\tif list[i].AuthorityId == id {\n\t\t\treturn &list[i]\n\t\t}\n\t\tif found := findAuthorityInTree(list[i].Children, id); found != nil {\n\t\t\treturn found\n\t\t}\n\t}\n\treturn nil\n}","sourceCodeStart":141,"sourceCodeEnd":177,"githubUrl":"https://github.com/flipped-aurora/gin-vue-admin/blob/3136500ef380842b0eb6c4daa87c3f8a47fcf9e0/server/mcp/org_common.go#L141-L177","documentation":"fetchDeptIndex calls the upstream gin-vue-admin endpoint /department/getDepartmentList to load the department tree; any transport or upstream API error is wrapped as 获取部门树失败. This is a pre-flight existence check so invalid department IDs are rejected before writes.","triggerScenarios":"Any MCP org tool that validates deptIds (e.g. assign_user_org) while the upstream POST /department/getDepartmentList fails: network error, invalid/expired token, upstream 4xx/5xx, or non-success code in the response envelope.","commonSituations":"MCP server cannot reach the main gin-vue-admin service (wrong base URL, service down); token expired or lacking department visibility; upstream returns an error code in the JSON body.","solutions":["Check connectivity from the MCP server to the main service (base URL, DNS, ports)","Verify the upstream token is valid and not expired","Call /department/getDepartmentList manually to inspect the upstream error message","Check MCP server logs for the wrapped cause (%w chain) to see the root error"],"exampleFix":null,"handlingStrategy":"try-catch","validationCode":"// pre-check upstream reachability before the tool call\nconst res = await fetch(baseUrl + '/department/getDepartmentList', { method: 'POST' })\nif (!res.ok) throw new Error('upstream unreachable')","typeGuard":null,"tryCatchPattern":"try {\n  await callMcpTool('assign_user_org', args)\n} catch (e) {\n  if (String(e.message).includes('获取部门树失败')) {\n    // inspect e.cause for transport vs upstream-code error; check token + baseUrl, then retry\n  }\n}","preventionTips":["Monitor upstream main-service health from the MCP server","Refresh tokens before expiry; handle 401 centrally","Use %w cause chain in logs to distinguish network vs API errors"],"tags":["network","upstream-api","mcp"],"backgroundTag":"upstream-request-failed","analyzedSha":"3136500ef380842b0eb6c4daa87c3f8a47fcf9e0","analyzedAt":"2026-08-31T13:50:02.721Z","schemaVersion":2},"datasetVersion":"2026-08-31T19:17:28.585Z"}