Add login_customer_id config (#32)

README.md

@@ -36,9 +36,12 @@ Settings required to run this tap.
 - `oauth_credentials.refresh_token` (required)
 - `developer_token` (required)
 - `customer_id` (required)
+- `login_customer_id` (optional)
 - `start_date` (optional)
 - `end_date` (optional)
 
+If using a manager account, `login_customer_id` should be set to the customer ID of the manager account while `customer_id` should be set to the customer ID of the account you want to sync.
+
 How to get these settings can be found in the following Google Ads documentation:
 
 https://developers.google.com/adwords/api/docs/guides/authentication

tap_googleads/client.py

@@ -75,7 +75,7 @@ def http_headers(self) -> dict:
         if "user_agent" in self.config:
             headers["User-Agent"] = self.config.get("user_agent")
         headers["developer-token"] = self.config["developer_token"]
-        headers["login-customer-id"] = self.config["customer_id"]
+        headers["login-customer-id"] = self.config.get("login_customer_id", self.config["customer_id"])
         return headers
 
     def get_next_page_token(

tap_googleads/tap.py

@@ -61,6 +61,11 @@ class TapGoogleAds(Tap):
             "customer_id",
             th.StringType,
         ),
+        th.Property(
+            "login_customer_id",
+            th.StringType,
+            description="Value to use in the login-customer-id header, if different from the customer_id to sync. Useful if you are syncing using a manager account.",
+        ),
     ).to_dict()
 
     def discover_streams(self) -> List[Stream]: