Enum AppError 

pub enum AppError {
    Connection(String),
    ReadOnlyViolation,
    LoadFileBlocked,
    IntoOutfileBlocked,
    MultiStatement,
    InvalidIdentifier(String),
    Query(String),
    TableNotFound(String),
}

Errors that can occur during MCP server operation.

Variants

Connection(String)

Database connection failed.

ReadOnlyViolation

Query blocked by read-only mode.

LoadFileBlocked

LOAD_FILE() function blocked for security.

IntoOutfileBlocked

INTO OUTFILE/DUMPFILE blocked for security.

MultiStatement

Multiple SQL statements blocked.

InvalidIdentifier(String)

Invalid database or table name identifier.

Query(String)

Database query execution failed.

TableNotFound(String)

Table isn’t found in database.

Trait Implementations

impl Debug for AppError

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

Formats the value using the given formatter.

impl Display for AppError

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

Formats the value using the given formatter.

impl Error for AppError

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 AppError

fn from(e: Error) -> Self

Converts to this type from the input type.