Authentication

The Authenticator defines how to configure outgoing HTTP requests to authenticate on the API source.

Schema:

  Authenticator:
    type: object
    description: "Authenticator type"
    anyOf:
      - "$ref": "#/definitions/OAuth"
      - "$ref": "#/definitions/ApiKeyAuthenticator"
      - "$ref": "#/definitions/BearerAuthenticator"
      - "$ref": "#/definitions/BasicHttpAuthenticator"

Authenticators

ApiKeyAuthenticator

The ApiKeyAuthenticator sets an HTTP header on outgoing requests. The following definition will set the header "Authorization" with a value "Bearer hello":

Schema:

  ApiKeyAuthenticator:
    type: object
    additionalProperties: true
    required:
      - header
      - api_token
    properties:
      "$parameters":
        "$ref": "#/definitions/$parameters"
      header:
        type: string
      api_token:
        type: string

Example:

authenticator:
  type: "ApiKeyAuthenticator"
  header: "Authorization"
  api_token: "Bearer hello"

BearerAuthenticator

The BearerAuthenticator is a specialized ApiKeyAuthenticator that always sets the header "Authorization" with the value Bearer {token}. The following definition will set the header "Authorization" with a value "Bearer hello"

Schema:

  BearerAuthenticator:
    type: object
    additionalProperties: true
    required:
      - api_token
    properties:
      "$parameters":
        "$ref": "#/definitions/$parameters"
      api_token:
        type: string

Example:

authenticator:
  type: "BearerAuthenticator"
  api_token: "hello"

More information on bearer authentication can be found here.

BasicHttpAuthenticator

The BasicHttpAuthenticator set the "Authorization" header with a (USER ID/password) pair, encoded using base64 as per RFC 7617. The following definition will set the header "Authorization" with a value Basic {encoded credentials}

Schema:

  BasicHttpAuthenticator:
    type: object
    additionalProperties: true
    required:
      - username
    properties:
      "$parameters":
        "$ref": "#/definitions/$parameters"
      username:
        type: string
      password:
        type: string

Example:

authenticator:
  type: "BasicHttpAuthenticator"
  username: "hello"
  password: "world"

The password is optional. Authenticating with APIs using Basic HTTP and a single API key can be done as:

Example:

authenticator:
  type: "BasicHttpAuthenticator"
  username: "hello"

OAuth

OAuth authentication is supported through the OAuthAuthenticator, which requires the following parameters:

• token_refresh_endpoint: The endpoint to refresh the access token
• client_id: The client id
• client_secret: The client secret
• refresh_token: The token used to refresh the access token
• scopes (Optional): The scopes to request. Default: Empty list
• token_expiry_date (Optional): The access token expiration date formatted as RFC-3339 ("%Y-%m-%dT%H:%M:%S.%f%z")
• access_token_name (Optional): The field to extract access token from in the response. Default: "access_token".
• expires_in_name (Optional): The field to extract expires_in from in the response. Default: "expires_in"
• refresh_request_body (Optional): The request body to send in the refresh request. Default: None
• grant_type (Optional): The parameter specified grant_type to request access_token. Default: "refresh_token"

Schema:

  OAuth:
    type: object
    additionalProperties: true
    required:
      - token_refresh_endpoint
      - client_id
      - client_secret
      - refresh_token
      - access_token_name
      - expires_in_name
    properties:
      "$parameters":
        "$ref": "#/definitions/$parameters"
      token_refresh_endpoint:
        type: string
      client_id:
        type: string
      client_secret:
        type: string
      refresh_token:
        type: string
      scopes:
        type: array
        items:
          type: string
        default: [ ]
      token_expiry_date:
        type: string
      access_token_name:
        type: string
        default: "access_token"
      expires_in_name:
        type: string
        default: "expires_in"
      refresh_request_body:
        type: object
      grant_type:
        type: string
        default: "refresh_token"

Example:

authenticator:
  type: "OAuthAuthenticator"
  token_refresh_endpoint: "https://api.searchmetrics.com/v4/token"
  client_id: "{{ config['api_key'] }}"
  client_secret: "{{ config['client_secret'] }}"
  refresh_token: ""

More readings

• Requester
• Request options