openapi: 3.0.1
info:
  title: Symphony Agent Add Attachment API
  description: 'This document refers to Symphony API calls to send and receive messages

    and content. They need the on-premise Agent installed to perform

    decryption/encryption of content.


    - sessionToken and keyManagerToken can be obtained by calling the

    authenticationAPI on the symphony back end and the key manager

    respectively. Refer to the methods described in authenticatorAPI.yaml.

    - Actions are defined to be atomic, ie will succeed in their entirety

    or fail and have changed nothing.

    - If it returns a 40X status then it will have sent no message to any

    stream even if a request to some subset of the requested streams

    would have succeeded.

    - If this contract cannot be met for any reason then this is an error

    and the response code will be 50X.

    - MessageML is a markup language for messages. See reference here:

    https://rest-api.symphony.com/docs/messagemlv2

    - **Real Time Events**: The following events are returned when reading

    from a real time messages and events stream ("datafeed"). These

    events will be returned for datafeeds created with the v5 endpoints.

    To know more about the endpoints, refer to Create Messages/Events

    Stream and Read Messages/Events Stream. Unless otherwise specified,

    all events were added in 1.46.

    '
  version: 22.9.1
servers:
- url: /
tags:
- name: Attachment
paths:
  /v1/stream/{sid}/attachment:
    get:
      tags:
      - Attachment
      summary: Download an Attachment
      description: Downloads the attachment body by the attachment ID, stream ID, and message ID.
      parameters:
      - name: sid
        in: path
        description: Stream ID
        required: true
        schema:
          type: string
      - name: fileId
        in: query
        description: The attachment ID (Base64-encoded)
        required: true
        schema:
          type: string
      - name: messageId
        in: query
        description: The ID of the message containing the attachment
        required: true
        schema:
          type: string
      - name: sessionToken
        in: header
        description: Session authentication token.
        required: true
        schema:
          type: string
      - name: keyManagerToken
        in: header
        description: Key Manager authentication token.
        required: true
        schema:
          type: string
      responses:
        '200':
          description: Attachment body as Base64 encoded string.
          content:
            application/octet-stream:
              schema:
                type: string
                format: byte
        '400':
          description: Client error, see response body for further details.
          content:
            application/octet-stream:
              schema:
                $ref: '#/components/schemas/Error'
        '401':
          description: 'Unauthorized: Session tokens invalid.'
          content:
            application/octet-stream:
              schema:
                $ref: '#/components/schemas/Error'
        '403':
          description: 'Forbidden: Caller lacks necessary entitlement.'
          content:
            application/octet-stream:
              schema:
                $ref: '#/components/schemas/Error'
        '500':
          description: Server error, see response body for further details.
          content:
            application/octet-stream:
              schema:
                $ref: '#/components/schemas/Error'
components:
  schemas:
    Error:
      type: object
      properties:
        code:
          type: integer
          format: int32
        message:
          type: string