Basic auth support for OAuth2 (#32)

* Basic auth support for OAuth2 https://github.com/awslabs/aws-appflow-custom-connector-java/pull/30/files * Update auth.py

Author: gashutos

custom_connector_sdk/connector/auth.py

@@ -26,6 +26,7 @@
 CUSTOM_CREDENTIALS = 'customCredentials'
 AUTH_PARAMETERS = 'authParameters'
 O_AUTH_2_CUSTOM_PROPERTIES = 'oAuth2CustomProperties'
+ADD_BASIC_AUTH_HEADER = 'addBasicAuthHeader'
 BASIC_AUTH_CREDENTIALS = 'basicAuthCredentials'
 API_KEY_CREDENTIALS = 'apiKeyCredentials'
 O_AUTH_2_CREDENTIALS = 'oAuth2Credentials'
@@ -204,6 +205,7 @@ def __init__(self,
  o_auth_2_grant_types_supported: List[OAuth2GrantType],
  o_auth_scopes: List[str] = None,
  o_auth_2_custom_parameters: List[Oauth2CustomParameter] = None,
+ add_basic_auth_header: bool,
  o_auth_2_content_type: OAuth2ContentType = OAuth2ContentType.URL_ENCODED,
  o_auth_2_method_type: OAuth2MethodType = OAuth2MethodType.HTTP_POST):
  # OAuth Scopes.
@@ -234,6 +236,9 @@ def __init__(self,
  # scope defined as the default parameter for AUTH_URL to generate the Authorization code.
  # Connector developer doesn't have to define clientId and scope as OAuth2Custom Parameter for AUTH_URL.
  self.o_auth_2_custom_parameters = o_auth_2_custom_parameters
+
+ # Specifies if clientId and clientSecret should be added to basic auth header
+ self.add_basic_auth_header = add_basic_auth_header
 
  # OAuth2 content type used for login requests. URL_ENCODED or APPLICATION_JSON.
  # Default: URL_ENCODED
@@ -250,6 +255,7 @@ def to_dict(self):
  O_AUTH_2_GRANT_TYPES_SUPPORTED: [grant_type.name for grant_type in self.o_auth_2_grant_types_supported],
  O_AUTH_SCOPES: self.o_auth_scopes,
  O_AUTH_2_CUSTOM_PROPERTIES: self.o_auth_2_custom_parameters and [param.to_dict() for param in self.o_auth_2_custom_parameters],
+ ADD_BASIC_AUTH_HEADER: self.add_basic_auth_header and [param.to_dict() for param in self.add_basic_auth_header],
  O_AUTH_2_CONTENT_TYPE: self.o_auth_2_content_type.name,
  O_AUTH_2_METHOD_TYPE: self.o_auth_2_method_type.name}