Enum NewSessionError

#[non_exhaustive]
pub enum NewSessionError {
    FailedToResolveAnyHostname(Vec<String>),
    EmptyKnownNodesList,
    DbError(DbError, String),
    BadQuery(BadQuery),
    CqlRequestSerialization(CqlRequestSerializationError),
    EmptyPlan,
    BodyExtensionsParseError(FrameBodyExtensionsParseError),
    MetadataError(MetadataError),
    CqlResultParseError(CqlResultParseError),
    CqlErrorParseError(CqlErrorParseError),
    ConnectionPoolError(ConnectionPoolError),
    ProtocolError(ProtocolError),
    TimeoutError,
    BrokenConnection(BrokenConnectionError),
    UnableToAllocStreamId,
    RequestTimeout(String),
    NextRowError(NextRowError),
    IntoLegacyQueryResultError(IntoLegacyQueryResultError),
}

Error that occurred during session creation

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

FailedToResolveAnyHostname(Vec<String>)

Failed to resolve hostname passed in Session creation

EmptyKnownNodesList

List of known nodes passed to Session constructor is empty There needs to be at least one node to connect to

DbError(DbError, String)

Database sent a response containing some error with a message

BadQuery(BadQuery)

Caller passed an invalid query

CqlRequestSerialization(CqlRequestSerializationError)

Failed to serialize CQL request.

EmptyPlan

Load balancing policy returned an empty plan.

BodyExtensionsParseError(FrameBodyExtensionsParseError)

Failed to deserialize frame body extensions.

MetadataError(MetadataError)

Failed to perform initial cluster metadata fetch.

CqlResultParseError(CqlResultParseError)

Received a RESULT server response, but failed to deserialize it.

CqlErrorParseError(CqlErrorParseError)

Received an ERROR server response, but failed to deserialize it.

ConnectionPoolError(ConnectionPoolError)

Selected node’s connection pool is in invalid state.

ProtocolError(ProtocolError)

Protocol error.

TimeoutError

Timeout error has occurred, couldn’t connect to node in time.

BrokenConnection(BrokenConnectionError)

A connection has been broken during query execution.

UnableToAllocStreamId

Driver was unable to allocate a stream id to execute a query on.

RequestTimeout(String)

Client timeout occurred before a response arrived for some query during Session creation.

NextRowError(NextRowError)

An error occurred during async iteration over rows of result.

IntoLegacyQueryResultError(IntoLegacyQueryResultError)

👎Deprecated since 0.15.1: Legacy deserialization API is inefficient and is going to be removed soon

Failed to convert QueryResult into LegacyQueryResult.

Trait Implementations

impl Clone for NewSessionError

fn clone(&self) -> NewSessionError

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for NewSessionError

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

Formats the value using the given formatter.

impl Display for NewSessionError

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

Formats the value using the given formatter.

impl Error for NewSessionError

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<BadQuery> for NewSessionError

fn from(source: BadQuery) -> Self

Converts to this type from the input type.

impl From<BrokenConnectionError> for NewSessionError

fn from(source: BrokenConnectionError) -> Self

Converts to this type from the input type.

impl From<ConnectionPoolError> for NewSessionError

fn from(source: ConnectionPoolError) -> Self

Converts to this type from the input type.

impl From<CqlErrorParseError> for NewSessionError

fn from(source: CqlErrorParseError) -> Self

Converts to this type from the input type.

impl From<CqlRequestSerializationError> for NewSessionError

fn from(source: CqlRequestSerializationError) -> Self

Converts to this type from the input type.

impl From<CqlResultParseError> for NewSessionError

fn from(source: CqlResultParseError) -> Self

Converts to this type from the input type.

impl From<FrameBodyExtensionsParseError> for NewSessionError

fn from(source: FrameBodyExtensionsParseError) -> Self

Converts to this type from the input type.

impl From<IntoLegacyQueryResultError> for NewSessionError

fn from(source: IntoLegacyQueryResultError) -> Self

Converts to this type from the input type.

impl From<MetadataError> for NewSessionError

fn from(source: MetadataError) -> Self

Converts to this type from the input type.

impl From<NextRowError> for NewSessionError

fn from(source: NextRowError) -> Self

Converts to this type from the input type.

impl From<ProtocolError> for NewSessionError

fn from(source: ProtocolError) -> Self

Converts to this type from the input type.

impl From<QueryError> for NewSessionError

fn from(query_error: QueryError) -> NewSessionError

Converts to this type from the input type.