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Creates an alias for a state machine that points to one or two versions of the same state machine

Description

Creates an alias for a state machine that points to one or two versions of the same state machine. You can set your application to call start_execution with an alias and update the version the alias uses without changing the client's code.

You can also map an alias to split start_execution requests between two versions of a state machine. To do this, add a second RoutingConfig object in the routingConfiguration parameter. You must also specify the percentage of execution run requests each version should receive in both RoutingConfig objects. Step Functions randomly chooses which version runs a given execution based on the percentage you specify.

To create an alias that points to a single version, specify a single RoutingConfig object with a weight set to 100.

You can create up to 100 aliases for each state machine. You must delete unused aliases using the delete_state_machine_alias API action.

create_state_machine_alias is an idempotent API. Step Functions bases the idempotency check on the stateMachineArn, description, name, and routingConfiguration parameters. Requests that contain the same values for these parameters return a successful idempotent response without creating a duplicate resource.

Related operations:

Usage

sfn_create_state_machine_alias(description, name, routingConfiguration)

Arguments

  • description

    A description for the state machine alias.

  • name

    [required] The name of the state machine alias.

    To avoid conflict with version ARNs, don't use an integer in the name of the alias.

  • routingConfiguration

    [required] The routing configuration of a state machine alias. The routing configuration shifts execution traffic between two state machine versions. routingConfiguration contains an array of RoutingConfig objects that specify up to two state machine versions. Step Functions then randomly choses which version to run an execution with based on the weight assigned to each RoutingConfig.

Value

A list with the following syntax:

list(
  stateMachineAliasArn = "string",
  creationDate = as.POSIXct(
    "2015-01-01"
  )
)

Request syntax

svc$create_state_machine_alias(
  description = "string",
  name = "string",
  routingConfiguration = list(
    list(
      stateMachineVersionArn = "string",
      weight = 123
    )
  )
)