Amazon S3 Copy Object Between Keys

arazzo: 1.0.1
info:
  title: Amazon S3 Copy Object Between Keys
  summary: Confirm a source object exists, copy it to a destination, and verify the copy.
  description: >-
    A safe server-side copy flow for Amazon S3. The workflow first HEADs the
    source object to confirm it exists, performs a server-side CopyObject to the
    destination key using the x-amz-copy-source header, and then HEADs the
    destination to confirm the copy succeeded. No object bytes pass through the
    client. 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: objectsApi
  url: ../openapi/amazon-s3-objects-api-openapi.yml
  type: openapi
workflows:
- workflowId: copy-object
  summary: Server-side copy an object from a source key to a destination key.
  description: >-
    Verifies the source object, copies it with CopyObject, and verifies the
    destination object was created.
  inputs:
    type: object
    required:
    - sourceBucket
    - sourceKey
    - destinationBucket
    - destinationKey
    - copySource
    properties:
      sourceBucket:
        type: string
        description: The bucket holding the source object.
      sourceKey:
        type: string
        description: The key of the source object to copy.
      destinationBucket:
        type: string
        description: The bucket the copy will be written to.
      destinationKey:
        type: string
        description: The key the copy will be written under.
      copySource:
        type: string
        description: The x-amz-copy-source value, e.g. /sourcebucket/sourcekey (URL-encoded path).
  steps:
  - stepId: headSource
    description: >-
      Confirm the source object exists before attempting the server-side copy.
    operationId: HeadObject
    parameters:
    - name: Bucket
      in: path
      value: $inputs.sourceBucket
    - name: Key+
      in: path
      value: $inputs.sourceKey
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      sourceEtag: $response.header.ETag
  - stepId: copyObject
    description: >-
      Perform the server-side copy to the destination key using the
      x-amz-copy-source header.
    operationId: CopyObject
    parameters:
    - name: Bucket
      in: path
      value: $inputs.destinationBucket
    - name: Key+
      in: path
      value: $inputs.destinationKey
    - name: x-amz-copy-source
      in: header
      value: $inputs.copySource
    - name: x-amz-metadata-directive
      in: header
      value: COPY
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      copyEtag: $response.body#/ETag
      lastModified: $response.body#/LastModified
  - stepId: headDestination
    description: >-
      Confirm the destination object now exists, completing the copy
      verification.
    operationId: HeadObject
    parameters:
    - name: Bucket
      in: path
      value: $inputs.destinationBucket
    - name: Key+
      in: path
      value: $inputs.destinationKey
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      destinationEtag: $response.header.ETag
  outputs:
    copyEtag: $steps.copyObject.outputs.copyEtag
    destinationEtag: $steps.headDestination.outputs.destinationEtag