{"record":{"id":"0218679c6b087e87","repo":"SigNoz/signoz","slug":"errcoderoleinvalidinput","errorCode":"ErrCodeRoleInvalidInput","errorMessage":"id is missing from the request","messagePattern":"id is missing from the request","errorType":"error_code","errorClass":"errors.SignozError","httpStatus":400,"severity":"error","filePath":"pkg/authz/signozauthzapi/handler.go","lineNumber":59,"sourceCode":"\tif err != nil {\n\t\trender.Error(rw, err)\n\t\treturn\n\t}\n\n\trender.Success(rw, http.StatusCreated, types.Identifiable{ID: role.ID})\n}\n\nfunc (handler *handler) Get(rw http.ResponseWriter, r *http.Request) {\n\tctx := r.Context()\n\tclaims, err := authtypes.ClaimsFromContext(ctx)\n\tif err != nil {\n\t\trender.Error(rw, err)\n\t\treturn\n\t}\n\n\tid, ok := mux.Vars(r)[\"id\"]\n\tif !ok {\n\t\trender.Error(rw, errors.New(errors.TypeInvalidInput, authtypes.ErrCodeRoleInvalidInput, \"id is missing from the request\"))\n\t\treturn\n\t}\n\troleID, err := valuer.NewUUID(id)\n\tif err != nil {\n\t\trender.Error(rw, err)\n\t\treturn\n\t}\n\n\trole, err := handler.authz.Get(ctx, valuer.MustNewUUID(claims.OrgID), roleID)\n\tif err != nil {\n\t\trender.Error(rw, err)\n\t\treturn\n\t}\n\n\trender.Success(rw, http.StatusOK, role)\n}\n\nfunc (handler *handler) List(rw http.ResponseWriter, r *http.Request) {","sourceCodeStart":41,"sourceCodeEnd":77,"githubUrl":"https://github.com/SigNoz/signoz/blob/5069bf80b08f1f00d7e014eccc09902f9871004f/pkg/authz/signozauthzapi/handler.go#L41-L77","documentation":"Returned by the SignOz role API handlers when the request path lacks the {id} variable (mux.Vars(r)[\"id\"] missing). It indicates a routing problem: the request reached the handler through a route that doesn't declare :id, or the mux wasn't configured with the expected route pattern.","triggerScenarios":"Calling GET/PUT on a route registered without the /{id} path parameter, or hitting the handler with a URL where the id segment is absent so mux doesn't populate Vars.","commonSituations":"Custom router wiring that registers /roles instead of /roles/{id}; proxy/gateway stripping the trailing path segment; tests invoking the handler directly without going through the mux route.","solutions":["Register the route with the id pattern: r.HandleFunc(\"/api/v1/roles/{id}\", ...) and include the id in the request URL","If behind a proxy, verify the full path (including the UUID segment) is forwarded","In tests, use mux.SetURLVars(r, map[string]string{\"id\": \"...\"}) to populate vars"],"exampleFix":"// before\nrouter.HandleFunc(\"/api/v1/roles\", h.Get)\n\n// after\nrouter.HandleFunc(\"/api/v1/roles/{id}\", h.Get)","handlingStrategy":"validation","validationCode":"vars := mux.Vars(r)\nid, ok := vars[\"id\"]\nif !ok || id == \"\" {\n    http.Error(rw, \"id path parameter required\", http.StatusBadRequest)\n    return\n}","typeGuard":null,"tryCatchPattern":null,"preventionTips":["Register routes with named path params and add route-level integration tests","Use middleware to assert required path vars before handlers run"],"tags":["routing","http","rest","go","validation"],"backgroundTag":"missing-path-parameter","analyzedSha":"5069bf80b08f1f00d7e014eccc09902f9871004f","analyzedAt":"2026-08-28T06:22:12.824Z","schemaVersion":2},"datasetVersion":"2026-08-28T11:17:15.048Z"}