{"record":{"id":"fa5c08ae4753269d","repo":"crowdsecurity/crowdsec","slug":"expected-zero-or-one-value-for-max-buffer-size","errorCode":null,"errorMessage":"expected zero or one value for 'max_buffer_size'","messagePattern":"expected zero or one value for 'max_buffer_size'","errorType":"validation","errorClass":null,"httpStatus":null,"severity":"error","filePath":"pkg/acquisition/modules/file/config.go","lineNumber":188,"sourceCode":"\t\t\treturn fmt.Errorf(\"could not parse file args: %w\", err)\n\t\t}\n\n\t\tfor key, value := range params {\n\t\t\tswitch key {\n\t\t\tcase \"log_level\":\n\t\t\t\tif len(value) != 1 {\n\t\t\t\t\treturn errors.New(\"expected zero or one value for 'log_level'\")\n\t\t\t\t}\n\n\t\t\t\tlvl, err := log.ParseLevel(value[0])\n\t\t\t\tif err != nil {\n\t\t\t\t\treturn fmt.Errorf(\"unknown level %s: %w\", value[0], err)\n\t\t\t\t}\n\n\t\t\t\ts.logger.Logger.SetLevel(lvl)\n\t\t\tcase \"max_buffer_size\":\n\t\t\t\tif len(value) != 1 {\n\t\t\t\t\treturn errors.New(\"expected zero or one value for 'max_buffer_size'\")\n\t\t\t\t}\n\n\t\t\t\tmaxBufferSize, err := strconv.Atoi(value[0])\n\t\t\t\tif err != nil {\n\t\t\t\t\treturn fmt.Errorf(\"could not parse max_buffer_size %s: %w\", value[0], err)\n\t\t\t\t}\n\n\t\t\t\ts.config.MaxBufferSize = maxBufferSize\n\t\t\tdefault:\n\t\t\t\treturn fmt.Errorf(\"unknown parameter %s\", key)\n\t\t\t}\n\t\t}\n\t}\n\n\ts.config.Labels = labels\n\ts.config.Mode = configuration.CAT_MODE\n\ts.config.UniqueId = uuid\n","sourceCodeStart":170,"sourceCodeEnd":206,"githubUrl":"https://github.com/crowdsecurity/crowdsec/blob/909b5157986a2b2c2163300fdaef5ed01289f7d2/pkg/acquisition/modules/file/config.go#L170-L206","documentation":"DSN validation in file ConfigureByDSN: the max_buffer_size query parameter is repeated in the file:// DSN. Exactly one integer value is expected, since it configures the line scanner buffer for a single file reader.","triggerScenarios":"Thrown at pkg/acquisition/modules/file/config.go:188 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":["Pass max_buffer_size once with a single integer (bytes), e.g. ?max_buffer_size=65536","Raise it only for very long lines; non-numeric values fail separately with a parse error"],"exampleFix":null,"handlingStrategy":"validation","validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"909b5157986a2b2c2163300fdaef5ed01289f7d2","analyzedAt":"2026-09-06T12:27:26.012Z","contentChangedAt":"2026-09-06T12:27:26.012Z","schemaVersion":2},"datasetVersion":"2026-09-14T00:17:10.932Z"}