dynamodb_transact_write_items: TransactWriteItems is a synchronous write operation that...

Description Usage Arguments Value Request syntax

View source: R/dynamodb_operations.R

Description

transact_write_items is a synchronous write operation that groups up to 25 action requests. These actions can target items in different tables, but not in different AWS accounts or Regions, and no two actions can target the same item. For example, you cannot both ConditionCheck and Update the same item. The aggregate size of the items in the transaction cannot exceed 4 MB.

The actions are completed atomically so that either all of them succeed, or all of them fail. They are defined by the following objects:

DynamoDB rejects the entire transact_write_items request if any of the following is true:

Usage

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dynamodb_transact_write_items(TransactItems, ReturnConsumedCapacity,
  ReturnItemCollectionMetrics, ClientRequestToken)

Arguments

TransactItems

[required] An ordered array of up to 25 TransactWriteItem objects, each of which contains a ConditionCheck, Put, Update, or Delete object. These can operate on items in different tables, but the tables must reside in the same AWS account and Region, and no two of them can operate on the same item.

ReturnConsumedCapacity
ReturnItemCollectionMetrics

Determines whether item collection metrics are returned. If set to SIZE, the response includes statistics about item collections (if any), that were modified during the operation and are returned in the response. If set to NONE (the default), no statistics are returned.

ClientRequestToken

Providing a ClientRequestToken makes the call to transact_write_items idempotent, meaning that multiple identical calls have the same effect as one single call.

Although multiple identical calls using the same client request token produce the same result on the server (no side effects), the responses to the calls might not be the same. If the ReturnConsumedCapacity> parameter is set, then the initial transact_write_items call returns the amount of write capacity units consumed in making the changes. Subsequent transact_write_items calls with the same client token return the number of read capacity units consumed in reading the item.

A client request token is valid for 10 minutes after the first request that uses it is completed. After 10 minutes, any request with the same client token is treated as a new request. Do not resubmit the same request with the same client token for more than 10 minutes, or the result might not be idempotent.

If you submit a request with the same client token but a change in other parameters within the 10-minute idempotency window, DynamoDB returns an IdempotentParameterMismatch exception.

Value

A list with the following syntax:

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list(
  ConsumedCapacity = list(
    list(
      TableName = "string",
      CapacityUnits = 123.0,
      ReadCapacityUnits = 123.0,
      WriteCapacityUnits = 123.0,
      Table = list(
        ReadCapacityUnits = 123.0,
        WriteCapacityUnits = 123.0,
        CapacityUnits = 123.0
      ),
      LocalSecondaryIndexes = list(
        list(
          ReadCapacityUnits = 123.0,
          WriteCapacityUnits = 123.0,
          CapacityUnits = 123.0
        )
      ),
      GlobalSecondaryIndexes = list(
        list(
          ReadCapacityUnits = 123.0,
          WriteCapacityUnits = 123.0,
          CapacityUnits = 123.0
        )
      )
    )
  ),
  ItemCollectionMetrics = list(
    list(
      list(
        ItemCollectionKey = list(
          list(
            S = "string",
            N = "string",
            B = raw,
            SS = list(
              "string"
            ),
            NS = list(
              "string"
            ),
            BS = list(
              raw
            ),
            M = list(
              list()
            ),
            L = list(
              list()
            ),
            NULL = TRUE|FALSE,
            BOOL = TRUE|FALSE
          )
        ),
        SizeEstimateRangeGB = list(
          123.0
        )
      )
    )
  )
)

Request syntax

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svc$transact_write_items(
  TransactItems = list(
    list(
      ConditionCheck = list(
        Key = list(
          list(
            S = "string",
            N = "string",
            B = raw,
            SS = list(
              "string"
            ),
            NS = list(
              "string"
            ),
            BS = list(
              raw
            ),
            M = list(
              list()
            ),
            L = list(
              list()
            ),
            NULL = TRUE|FALSE,
            BOOL = TRUE|FALSE
          )
        ),
        TableName = "string",
        ConditionExpression = "string",
        ExpressionAttributeNames = list(
          "string"
        ),
        ExpressionAttributeValues = list(
          list(
            S = "string",
            N = "string",
            B = raw,
            SS = list(
              "string"
            ),
            NS = list(
              "string"
            ),
            BS = list(
              raw
            ),
            M = list(
              list()
            ),
            L = list(
              list()
            ),
            NULL = TRUE|FALSE,
            BOOL = TRUE|FALSE
          )
        ),
        ReturnValuesOnConditionCheckFailure = "ALL_OLD"|"NONE"
      ),
      Put = list(
        Item = list(
          list(
            S = "string",
            N = "string",
            B = raw,
            SS = list(
              "string"
            ),
            NS = list(
              "string"
            ),
            BS = list(
              raw
            ),
            M = list(
              list()
            ),
            L = list(
              list()
            ),
            NULL = TRUE|FALSE,
            BOOL = TRUE|FALSE
          )
        ),
        TableName = "string",
        ConditionExpression = "string",
        ExpressionAttributeNames = list(
          "string"
        ),
        ExpressionAttributeValues = list(
          list(
            S = "string",
            N = "string",
            B = raw,
            SS = list(
              "string"
            ),
            NS = list(
              "string"
            ),
            BS = list(
              raw
            ),
            M = list(
              list()
            ),
            L = list(
              list()
            ),
            NULL = TRUE|FALSE,
            BOOL = TRUE|FALSE
          )
        ),
        ReturnValuesOnConditionCheckFailure = "ALL_OLD"|"NONE"
      ),
      Delete = list(
        Key = list(
          list(
            S = "string",
            N = "string",
            B = raw,
            SS = list(
              "string"
            ),
            NS = list(
              "string"
            ),
            BS = list(
              raw
            ),
            M = list(
              list()
            ),
            L = list(
              list()
            ),
            NULL = TRUE|FALSE,
            BOOL = TRUE|FALSE
          )
        ),
        TableName = "string",
        ConditionExpression = "string",
        ExpressionAttributeNames = list(
          "string"
        ),
        ExpressionAttributeValues = list(
          list(
            S = "string",
            N = "string",
            B = raw,
            SS = list(
              "string"
            ),
            NS = list(
              "string"
            ),
            BS = list(
              raw
            ),
            M = list(
              list()
            ),
            L = list(
              list()
            ),
            NULL = TRUE|FALSE,
            BOOL = TRUE|FALSE
          )
        ),
        ReturnValuesOnConditionCheckFailure = "ALL_OLD"|"NONE"
      ),
      Update = list(
        Key = list(
          list(
            S = "string",
            N = "string",
            B = raw,
            SS = list(
              "string"
            ),
            NS = list(
              "string"
            ),
            BS = list(
              raw
            ),
            M = list(
              list()
            ),
            L = list(
              list()
            ),
            NULL = TRUE|FALSE,
            BOOL = TRUE|FALSE
          )
        ),
        UpdateExpression = "string",
        TableName = "string",
        ConditionExpression = "string",
        ExpressionAttributeNames = list(
          "string"
        ),
        ExpressionAttributeValues = list(
          list(
            S = "string",
            N = "string",
            B = raw,
            SS = list(
              "string"
            ),
            NS = list(
              "string"
            ),
            BS = list(
              raw
            ),
            M = list(
              list()
            ),
            L = list(
              list()
            ),
            NULL = TRUE|FALSE,
            BOOL = TRUE|FALSE
          )
        ),
        ReturnValuesOnConditionCheckFailure = "ALL_OLD"|"NONE"
      )
    )
  ),
  ReturnConsumedCapacity = "INDEXES"|"TOTAL"|"NONE",
  ReturnItemCollectionMetrics = "SIZE"|"NONE",
  ClientRequestToken = "string"
)

paws.database documentation built on March 9, 2021, 5:11 p.m.