Enum McpError 

pub enum McpError {
    ToolNotFound {
        tool_name: String,
    },
    ResourceNotFound {
        uri: String,
    },
    PromptNotFound {
        prompt_name: String,
    },
    InvalidParameter {
        parameter_name: String,
        message: String,
    },
    MissingParameter {
        parameter_name: String,
    },
    InvalidFormat {
        format: String,
        supported: String,
    },
    InvalidDataType {
        data_type: String,
        supported: String,
    },
    DatabaseOperationFailed {
        operation: String,
        source: ThingsError,
    },
    BackupOperationFailed {
        operation: String,
        source: ThingsError,
    },
    ExportOperationFailed {
        operation: String,
        source: ThingsError,
    },
    PerformanceMonitoringFailed {
        operation: String,
        source: ThingsError,
    },
    CacheOperationFailed {
        operation: String,
        source: ThingsError,
    },
    SerializationFailed {
        operation: String,
        source: Error,
    },
    IoOperationFailed {
        operation: String,
        source: Error,
    },
    ConfigurationError {
        message: String,
    },
    ValidationError {
        message: String,
    },
    InternalError {
        message: String,
    },
}

MCP-specific error types for better error handling and user experience

Variants

ToolNotFound

Fields

tool_name: String

ResourceNotFound

Fields

uri: String

PromptNotFound

Fields

prompt_name: String

InvalidParameter

Fields

parameter_name: String

message: String

MissingParameter

Fields

parameter_name: String

InvalidFormat

Fields

format: String

supported: String

InvalidDataType

Fields

data_type: String

supported: String

DatabaseOperationFailed

Fields

operation: String

source: ThingsError

BackupOperationFailed

Fields

operation: String

source: ThingsError

ExportOperationFailed

Fields

operation: String

source: ThingsError

PerformanceMonitoringFailed

Fields

operation: String

source: ThingsError

CacheOperationFailed

Fields

operation: String

source: ThingsError

SerializationFailed

Fields

operation: String

source: Error

IoOperationFailed

Fields

operation: String

source: Error

ConfigurationError

Fields

message: String

ValidationError

Fields

message: String

InternalError

Fields

message: String

Implementations

impl McpError

pub fn tool_not_found(tool_name: impl Into<String>) -> Self

Create a tool not found error

pub fn resource_not_found(uri: impl Into<String>) -> Self

Create a resource not found error

pub fn prompt_not_found(prompt_name: impl Into<String>) -> Self

Create a prompt not found error

pub fn invalid_parameter( parameter_name: impl Into<String>, message: impl Into<String>, ) -> Self

Create an invalid parameter error

pub fn missing_parameter(parameter_name: impl Into<String>) -> Self

Create a missing parameter error

pub fn invalid_format( format: impl Into<String>, supported: impl Into<String>, ) -> Self

Create an invalid format error

pub fn invalid_data_type( data_type: impl Into<String>, supported: impl Into<String>, ) -> Self

Create an invalid data type error

pub fn database_operation_failed( operation: impl Into<String>, source: ThingsError, ) -> Self

Create a database operation failed error

pub fn backup_operation_failed( operation: impl Into<String>, source: ThingsError, ) -> Self

Create a backup operation failed error

pub fn export_operation_failed( operation: impl Into<String>, source: ThingsError, ) -> Self

Create an export operation failed error

pub fn performance_monitoring_failed( operation: impl Into<String>, source: ThingsError, ) -> Self

Create a performance monitoring failed error

pub fn cache_operation_failed( operation: impl Into<String>, source: ThingsError, ) -> Self

Create a cache operation failed error

pub fn serialization_failed(operation: impl Into<String>, source: Error) -> Self

Create a serialization failed error

pub fn io_operation_failed(operation: impl Into<String>, source: Error) -> Self

Create an IO operation failed error

pub fn configuration_error(message: impl Into<String>) -> Self

Create a configuration error

pub fn validation_error(message: impl Into<String>) -> Self

Create a validation error

pub fn internal_error(message: impl Into<String>) -> Self

Create an internal error

pub fn to_call_result(self) -> CallToolResult

Convert error to MCP call result

pub fn to_prompt_result(self) -> GetPromptResult

Convert error to MCP prompt result

pub fn to_resource_result(self) -> ReadResourceResult

Convert error to MCP resource result

Trait Implementations

impl Debug for McpError

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for McpError

fn fmt(&self, __formatter: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Error for McpError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl From<Error> for McpError

fn from(error: Error) -> Self

Converts to this type from the input type.

impl From<Error> for McpError

fn from(error: Error) -> Self

Converts to this type from the input type.

impl From<MiddlewareError> for McpError

fn from(error: MiddlewareError) -> Self

Converts to this type from the input type.

impl From<ThingsError> for McpError

From trait implementations for common error types

fn from(error: ThingsError) -> Self

Converts to this type from the input type.