Struct TransactionCanceledException

#[non_exhaustive]
pub struct TransactionCanceledException {
    pub message: Option<String>,
    pub cancellation_reasons: Option<Vec<CancellationReason>>,
    /* private fields */
}

The entire transaction request was canceled.

DynamoDB cancels a TransactWriteItems request under the following circumstances:

• A condition in one of the condition expressions is not met.

• A table in the TransactWriteItems request is in a different account or region.

• More than one action in the TransactWriteItems operation targets the same item.

• There is insufficient provisioned capacity for the transaction to be completed.

• An item size becomes too large (larger than 400 KB), or a local secondary index (LSI) becomes too large, or a similar validation error occurs because of changes made by the transaction.

• There is a user error, such as an invalid data format.

• There is an ongoing TransactWriteItems operation that conflicts with a concurrent TransactWriteItems request. In this case the TransactWriteItems operation fails with a TransactionCanceledException.

DynamoDB cancels a TransactGetItems request under the following circumstances:

• There is an ongoing TransactGetItems operation that conflicts with a concurrent PutItem, UpdateItem, DeleteItem or TransactWriteItems request. In this case the TransactGetItems operation fails with a TransactionCanceledException.

• A table in the TransactGetItems request is in a different account or region.

• There is insufficient provisioned capacity for the transaction to be completed.

• There is a user error, such as an invalid data format.

If using Java, DynamoDB lists the cancellation reasons on the CancellationReasons property. This property is not set for other languages. Transaction cancellation reasons are ordered in the order of requested items, if an item has no error it will have None code and Null message.

Cancellation reason codes and possible error messages:

• No Errors:

  • Code: None

  • Message: null

• Conditional Check Failed:

  • Code: ConditionalCheckFailed

  • Message: The conditional request failed.

• Item Collection Size Limit Exceeded:

  • Code: ItemCollectionSizeLimitExceeded

  • Message: Collection size exceeded.

• Transaction Conflict:

  • Code: TransactionConflict

  • Message: Transaction is ongoing for the item.

• Provisioned Throughput Exceeded:

  • Code: ProvisionedThroughputExceeded

  • Messages:

    • The level of configured provisioned throughput for the table was exceeded. Consider increasing your provisioning level with the UpdateTable API.

      This Message is received when provisioned throughput is exceeded is on a provisioned DynamoDB table.

    • The level of configured provisioned throughput for one or more global secondary indexes of the table was exceeded. Consider increasing your provisioning level for the under-provisioned global secondary indexes with the UpdateTable API.

      This message is returned when provisioned throughput is exceeded is on a provisioned GSI.

• Throttling Error:

  • Code: ThrottlingError

  • Messages:

    • Throughput exceeds the current capacity of your table or index. DynamoDB is automatically scaling your table or index so please try again shortly. If exceptions persist, check if you have a hot key: https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/bp-partition-key-design.html.

      This message is returned when writes get throttled on an On-Demand table as DynamoDB is automatically scaling the table.

    • Throughput exceeds the current capacity for one or more global secondary indexes. DynamoDB is automatically scaling your index so please try again shortly.

      This message is returned when writes get throttled on an On-Demand GSI as DynamoDB is automatically scaling the GSI.

• Validation Error:

  • Code: ValidationError

  • Messages:

    • One or more parameter values were invalid.

    • The update expression attempted to update the secondary index key beyond allowed size limits.

    • The update expression attempted to update the secondary index key to unsupported type.

    • An operand in the update expression has an incorrect data type.

    • Item size to update has exceeded the maximum allowed size.

    • Number overflow. Attempting to store a number with magnitude larger than supported range.

    • Type mismatch for attribute to update.

    • Nesting Levels have exceeded supported limits.

    • The document path provided in the update expression is invalid for update.

    • The provided expression refers to an attribute that does not exist in the item.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

message: Option<String>

cancellation_reasons: Option<Vec<CancellationReason>>

A list of cancellation reasons.

Implementations

impl TransactionCanceledException

pub fn cancellation_reasons(&self) -> &[CancellationReason]

A list of cancellation reasons.

If no value was sent for this field, a default will be set. If you want to determine if no value was sent, use .cancellation_reasons.is_none().

impl TransactionCanceledException

pub fn message(&self) -> Option<&str>

Returns the error message.

impl TransactionCanceledException

pub fn builder() -> TransactionCanceledExceptionBuilder

Creates a new builder-style object to manufacture TransactionCanceledException.

Trait Implementations

impl Clone for TransactionCanceledException

fn clone(&self) -> TransactionCanceledException

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for TransactionCanceledException

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

Formats the value using the given formatter.

impl Display for TransactionCanceledException

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

Formats the value using the given formatter.

impl Error for TransactionCanceledException

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 PartialEq for TransactionCanceledException

fn eq(&self, other: &TransactionCanceledException) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl ProvideErrorMetadata for TransactionCanceledException

fn meta(&self) -> &ErrorMetadata

Returns error metadata, which includes the error code, message, request ID, and potentially additional information.

fn code(&self) -> Option<&str>

Returns the error code if it’s available.

fn message(&self) -> Option<&str>

Returns the error message, if there is one.

impl RequestId for TransactionCanceledException

fn request_id(&self) -> Option<&str>

Returns the request ID, or None if the service could not be reached.

impl StructuralPartialEq for TransactionCanceledException