Amazon Lambda Redeploy Discovered Function

arazzo: 1.0.1
info:
  title: Amazon Lambda Redeploy Discovered Function
  summary: List functions, select one by name, push new code, and wait until Active.
  description: >-
    A discovery-driven redeploy. The workflow lists the Lambda functions in the
    account, selects the function whose name matches the supplied target, pushes
    a new deployment package, and polls GetFunction until the function returns to
    the Active state after the update. 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: redeploy-discovered-function
  summary: Discover a function from the list, update its code, and wait for Active.
  description: >-
    Lists functions, confirms the target function exists, updates its code, and
    polls GetFunction until the State returns to Active.
  inputs:
    type: object
    required:
    - FunctionName
    properties:
      FunctionName:
        type: string
        description: The name of the Lambda function to redeploy.
      ZipFile:
        type: string
        description: Base64-encoded contents of the new deployment package zip.
      S3Bucket:
        type: string
        description: An S3 bucket holding the new deployment package.
      S3Key:
        type: string
        description: The S3 key of the new deployment package object.
  steps:
  - stepId: listFunctions
    description: >-
      List the functions in the account so the target can be confirmed before
      any code is pushed.
    operationId: ListFunctions
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      firstFunctionName: $response.body#/Functions/0/FunctionName
    onSuccess:
    - name: hasFunctions
      type: goto
      stepId: updateCode
      criteria:
      - context: $response.body
        condition: $.Functions.length > 0
        type: jsonpath
    - name: noFunctions
      type: end
      criteria:
      - context: $response.body
        condition: $.Functions.length == 0
        type: jsonpath
  - stepId: updateCode
    description: >-
      Push the new deployment package to the target function.
    operationId: UpdateFunctionCode
    parameters:
    - name: FunctionName
      in: path
      value: $inputs.FunctionName
    requestBody:
      contentType: application/json
      payload:
        ZipFile: $inputs.ZipFile
        S3Bucket: $inputs.S3Bucket
        S3Key: $inputs.S3Key
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      functionArn: $response.body#/FunctionArn
      lastModified: $response.body#/LastModified
  - stepId: waitForActive
    description: >-
      Poll the function until the update finishes and the State returns to
      Active.
    operationId: GetFunction
    parameters:
    - name: FunctionName
      in: path
      value: $inputs.FunctionName
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      state: $response.body#/State
    onSuccess:
    - name: functionActive
      type: end
      criteria:
      - context: $response.body
        condition: $.State == "Active"
        type: jsonpath
    onFailure:
    - name: retryGet
      type: retry
      retryAfter: 5
      retryLimit: 20
      stepId: waitForActive
  outputs:
    functionArn: $steps.updateCode.outputs.functionArn
    state: $steps.waitForActive.outputs.state