Amazon Lambda Reconfigure Function

arazzo: 1.0.1
info:
  title: Amazon Lambda Reconfigure Function
  summary: Change a function's runtime settings, wait for Active, then invoke to verify.
  description: >-
    Adjusts the version-specific settings of an existing Lambda function — such
    as memory, timeout, handler, or description — then polls GetFunction until
    the configuration update settles back into the Active state before invoking
    the function to confirm it still runs. Every step spells out its request
    inline so the flow can be read and executed without opening the underlying
    OpenAPI description.
  version: 1.0.0
sourceDescriptions:
- name: amazonLambdaApi
  url: ../openapi/amazon-lambda-openapi.yml
  type: openapi
workflows:
- workflowId: reconfigure-function
  summary: Update function configuration, wait for Active, and invoke.
  description: >-
    Modifies the version-specific settings of a function, polls GetFunction
    until the State returns to Active, and invokes the function to confirm the
    new configuration is healthy.
  inputs:
    type: object
    required:
    - FunctionName
    properties:
      FunctionName:
        type: string
        description: The name of the Lambda function to reconfigure.
      Role:
        type: string
        description: A new execution role ARN for the function.
      Handler:
        type: string
        description: A new handler for the function.
      Description:
        type: string
        description: A new description for the function.
      Timeout:
        type: integer
        description: A new timeout (in seconds) for the function.
      MemorySize:
        type: integer
        description: A new memory size (in MB) for the function.
      invocationPayload:
        type: object
        description: The JSON event payload used to verify the reconfigured function.
  steps:
  - stepId: updateConfiguration
    description: >-
      Apply the new version-specific settings to the function. Lambda returns
      the updated configuration and the resulting State.
    operationId: UpdateFunctionConfiguration
    parameters:
    - name: FunctionName
      in: path
      value: $inputs.FunctionName
    requestBody:
      contentType: application/json
      payload:
        Role: $inputs.Role
        Handler: $inputs.Handler
        Description: $inputs.Description
        Timeout: $inputs.Timeout
        MemorySize: $inputs.MemorySize
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      functionArn: $response.body#/FunctionArn
      lastModified: $response.body#/LastModified
  - stepId: waitForActive
    description: >-
      Poll the function until the configuration change settles and the State
      returns to Active. A Failed state branches to the failure handler.
    operationId: GetFunction
    parameters:
    - name: FunctionName
      in: path
      value: $inputs.FunctionName
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      state: $response.body#/State
    onSuccess:
    - name: functionActive
      type: goto
      stepId: verifyInvoke
      criteria:
      - context: $response.body
        condition: $.State == "Active"
        type: jsonpath
    - name: functionFailed
      type: goto
      stepId: reportFailure
      criteria:
      - context: $response.body
        condition: $.State == "Failed"
        type: jsonpath
    onFailure:
    - name: retryGet
      type: retry
      retryAfter: 5
      retryLimit: 20
      stepId: waitForActive
  - stepId: verifyInvoke
    description: >-
      Invoke the function to confirm it still executes under the new
      configuration.
    operationId: InvokeFunction
    parameters:
    - name: FunctionName
      in: path
      value: $inputs.FunctionName
    requestBody:
      contentType: application/json
      payload: $inputs.invocationPayload
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      invocationResult: $response.body
    onSuccess:
    - name: done
      type: end
  - stepId: reportFailure
    description: >-
      Re-read the configuration when the update left the function in the Failed
      state so the caller can surface it.
    operationId: GetFunction
    parameters:
    - name: FunctionName
      in: path
      value: $inputs.FunctionName
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      failedState: $response.body#/State
  outputs:
    functionArn: $steps.updateConfiguration.outputs.functionArn
    invocationResult: $steps.verifyInvoke.outputs.invocationResult
    failedState: $steps.reportFailure.outputs.failedState