Enum diesel::connection::TransactionManagerStatus

pub enum TransactionManagerStatus {
    Valid(ValidTransactionManagerStatus),
    InError,
}

Status of the transaction manager

Variants

Valid(ValidTransactionManagerStatus)

Valid status, the manager can run operations

InError

Error status, probably following a broken connection. The manager will no longer run operations

Implementations

impl TransactionManagerStatus

pub fn transaction_depth(&self) -> QueryResult<Option<NonZeroU32>>

Returns the transaction depth if the transaction manager’s status is valid, or returns Error::BrokenTransactionManager if the transaction manager is in error.

pub fn set_requires_rollback_maybe_up_to_top_level(&mut self, to: bool)

Available on (crate features i-implement-a-third-party-backend-and-opt-into-breaking-changes or postgres or mysql) and crate feature i-implement-a-third-party-backend-and-opt-into-breaking-changes only.

If in transaction and transaction manager is not broken, registers that it’s possible that the connection can not be used anymore until top-level transaction is rolled back.

If that is registered, savepoints rollbacks will still be attempted, but failure to do so will not result in an error. (Some may succeed, some may not.)

pub fn set_in_error(&mut self)

Sets the transaction manager status to InError

Subsequent attempts to use transaction-related features will result in a Error::BrokenTransactionManager error

pub fn transaction_state( &mut self ) -> QueryResult<&mut ValidTransactionManagerStatus>

Available on crate feature i-implement-a-third-party-backend-and-opt-into-breaking-changes only.

Expose access to the inner transaction state

This function returns an error if the Transaction manager is in a broken state

pub fn set_test_transaction_flag(&mut self)

Available on crate feature i-implement-a-third-party-backend-and-opt-into-breaking-changes only.

This function allows to flag a transaction manager in such a way that it contains a test transaction.

This will disable some checks in regards to open transactions to allow Connection::begin_test_transaction to work with pooled connections as well

Trait Implementations

impl Debug for TransactionManagerStatus

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

Formats the value using the given formatter.

impl Default for TransactionManagerStatus

fn default() -> Self

Returns the “default value” for a type.