openapi: 3.1.0
info:
  title: 'Amazon Step Functions Executions #X Amz Target=AWSStepFunctions.UpdateStateMachineAlias API'
  description: Amazon Step Functions is a serverless workflow orchestration service that lets you coordinate distributed applications and microservices using visual workflows. This API enables you to create and manage state machines, start and monitor executions, and retrieve execution history.
  version: '2016-11-23'
  contact:
    name: Amazon Web Services
    url: https://aws.amazon.com/contact-us/
  termsOfService: https://aws.amazon.com/service-terms/
servers:
- url: https://states.{region}.amazonaws.com
  description: Amazon Step Functions Regional Endpoint
  variables:
    region:
      default: us-east-1
      description: AWS Region
security:
- sigv4Auth: []
tags:
- name: '#X Amz Target=AWSStepFunctions.UpdateStateMachineAlias'
paths:
  /#X-Amz-Target=AWSStepFunctions.UpdateStateMachineAlias:
    parameters:
    - $ref: '#/components/parameters/X-Amz-Content-Sha256'
    - $ref: '#/components/parameters/X-Amz-Date'
    - $ref: '#/components/parameters/X-Amz-Algorithm'
    - $ref: '#/components/parameters/X-Amz-Credential'
    - $ref: '#/components/parameters/X-Amz-Security-Token'
    - $ref: '#/components/parameters/X-Amz-Signature'
    - $ref: '#/components/parameters/X-Amz-SignedHeaders'
    post:
      operationId: UpdateStateMachineAlias
      description: <p>Updates the configuration of an existing state machine <a href="https://docs.aws.amazon.com/step-functions/latest/dg/concepts-state-machine-alias.html">alias</a> by modifying its <code>description</code> or <code>routingConfiguration</code>.</p> <p>You must specify at least one of the <code>description</code> or <code>routingConfiguration</code> parameters to update a state machine alias.</p> <note> <p> <code>UpdateStateMachineAlias</code> is an idempotent API. Step Functions bases the idempotency check on the <code>stateMachineAliasArn</code>, <code>description</code>, and <code>routingConfiguration</code> parameters. Requests with the same parameters return an idempotent response.</p> </note> <note> <p>This operation is eventually consistent. All <a>StartExecution</a> requests made within a few seconds use the latest alias configuration. Executions started immediately after calling <code>UpdateStateMachineAlias</code> may use the previous routing configuration.</p> </note> <p> <b>Related operations:</b> </p> <ul> <li> <p> <a>CreateStateMachineAlias</a> </p> </li> <li> <p> <a>DescribeStateMachineAlias</a> </p> </li> <li> <p> <a>ListStateMachineAliases</a> </p> </li> <li> <p> <a>DeleteStateMachineAlias</a> </p> </li> </ul>
      responses:
        '200':
          description: Success
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/UpdateStateMachineAliasOutput'
              examples:
                UpdateStateMachineAlias200Example:
                  summary: Default UpdateStateMachineAlias 200
                  x-microcks-default: true
                  value:
                    updateDate: example-value
        '480':
          description: ValidationException
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ValidationException'
              examples:
                UpdateStateMachineAlias480Example:
                  summary: Default UpdateStateMachineAlias 480
                  x-microcks-default: true
                  value: example-value
        '481':
          description: InvalidArn
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/InvalidArn'
              examples:
                UpdateStateMachineAlias481Example:
                  summary: Default UpdateStateMachineAlias 481
                  x-microcks-default: true
                  value: example-value
        '482':
          description: ResourceNotFound
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ResourceNotFound'
              examples:
                UpdateStateMachineAlias482Example:
                  summary: Default UpdateStateMachineAlias 482
                  x-microcks-default: true
                  value: example-value
        '483':
          description: ConflictException
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ConflictException'
              examples:
                UpdateStateMachineAlias483Example:
                  summary: Default UpdateStateMachineAlias 483
                  x-microcks-default: true
                  value: example-value
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/UpdateStateMachineAliasInput'
            examples:
              UpdateStateMachineAliasRequestExample:
                summary: Default UpdateStateMachineAlias request
                x-microcks-default: true
                value:
                  stateMachineAliasArn: arn:aws:service:us-east-1:123456789012:resource/example
                  description: example-value
                  routingConfiguration: example-value
      parameters:
      - name: X-Amz-Target
        in: header
        required: true
        schema:
          type: string
          enum:
          - AWSStepFunctions.UpdateStateMachineAlias
      summary: Amazon Update State Machine Alias
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
      tags:
      - '#X Amz Target=AWSStepFunctions.UpdateStateMachineAlias'
components:
  parameters:
    X-Amz-SignedHeaders:
      name: X-Amz-SignedHeaders
      in: header
      schema:
        type: string
      required: false
    X-Amz-Signature:
      name: X-Amz-Signature
      in: header
      schema:
        type: string
      required: false
    X-Amz-Security-Token:
      name: X-Amz-Security-Token
      in: header
      schema:
        type: string
      required: false
    X-Amz-Content-Sha256:
      name: X-Amz-Content-Sha256
      in: header
      schema:
        type: string
      required: false
    X-Amz-Date:
      name: X-Amz-Date
      in: header
      schema:
        type: string
      required: false
    X-Amz-Credential:
      name: X-Amz-Credential
      in: header
      schema:
        type: string
      required: false
    X-Amz-Algorithm:
      name: X-Amz-Algorithm
      in: header
      schema:
        type: string
      required: false
  schemas:
    ValidationException: {}
    InvalidArn: {}
    RoutingConfigurationListItem:
      type: object
      required:
      - stateMachineVersionArn
      - weight
      properties:
        stateMachineVersionArn:
          allOf:
          - $ref: '#/components/schemas/Arn'
          - description: <p>The Amazon Resource Name (ARN) that identifies one or two state machine versions defined in the routing configuration.</p> <p>If you specify the ARN of a second version, it must belong to the same state machine as the first version.</p>
        weight:
          allOf:
          - $ref: '#/components/schemas/VersionWeight'
          - description: The percentage of traffic you want to route to the second state machine version. The sum of the weights in the routing configuration must be equal to 100.
      description: Contains details about the routing configuration of a state machine alias. In a routing configuration, you define an array of objects that specify up to two state machine versions. You also specify the percentage of traffic to be routed to each version.
    RoutingConfigurationList:
      type: array
      items:
        $ref: '#/components/schemas/RoutingConfigurationListItem'
      minItems: 1
      maxItems: 2
    AliasDescription:
      type: string
      maxLength: 256
      format: password
    VersionWeight:
      type: integer
      minimum: 0
      maximum: 100
    UpdateStateMachineAliasInput:
      type: object
      required:
      - stateMachineAliasArn
      title: UpdateStateMachineAliasInput
      properties:
        stateMachineAliasArn:
          allOf:
          - $ref: '#/components/schemas/Arn'
          - description: The Amazon Resource Name (ARN) of the state machine alias.
        description:
          allOf:
          - $ref: '#/components/schemas/AliasDescription'
          - description: A description of the state machine alias.
        routingConfiguration:
          allOf:
          - $ref: '#/components/schemas/RoutingConfigurationList'
          - description: <p>The routing configuration of the state machine alias.</p> <p>An array of <code>RoutingConfig</code> objects that specifies up to two state machine versions that the alias starts executions for.</p>
    ConflictException: {}
    Timestamp:
      type: string
      format: date-time
    ResourceNotFound: {}
    Arn:
      type: string
      minLength: 1
      maxLength: 256
    UpdateStateMachineAliasOutput:
      type: object
      required:
      - updateDate
      properties:
        updateDate:
          allOf:
          - $ref: '#/components/schemas/Timestamp'
          - description: The date and time the state machine alias was updated.
  securitySchemes:
    sigv4Auth:
      type: apiKey
      name: Authorization
      in: header
      description: AWS Signature Version 4 authentication
externalDocs:
  description: Amazon Step Functions API Reference
  url: https://docs.aws.amazon.com/step-functions/latest/apireference/