Source Facebook Marketing: add unit test

airbyte-integrations/connectors/source-facebook-marketing/Dockerfile

@@ -13,5 +13,5 @@ ENV AIRBYTE_ENTRYPOINT "python /airbyte/integration_code/main.py"
 ENTRYPOINT ["python", "/airbyte/integration_code/main.py"]
 
 
-LABEL io.airbyte.version=1.1.5
+LABEL io.airbyte.version=1.1.6
 LABEL io.airbyte.name=airbyte/source-facebook-marketing

airbyte-integrations/connectors/source-facebook-marketing/metadata.yaml

@@ -5,7 +5,7 @@ data:
   connectorSubtype: api
   connectorType: source
   definitionId: e7778cfc-e97c-4458-9ecb-b4f2bba8946c
-  dockerImageTag: 1.1.5
+  dockerImageTag: 1.1.6
   dockerRepository: airbyte/source-facebook-marketing
   githubIssueLabel: source-facebook-marketing
   icon: facebook.svg

airbyte-integrations/connectors/source-facebook-marketing/source_facebook_marketing/streams/base_streams.py

@@ -6,6 +6,7 @@
 from abc import ABC, abstractmethod
 from datetime import datetime
 from functools import partial
+from math import ceil
 from queue import Queue
 from typing import TYPE_CHECKING, Any, Iterable, List, Mapping, MutableMapping, Optional
 
@@ -50,7 +51,7 @@ def __init__(self, api: "API", include_deleted: bool = False, page_size: int = 1
         self._api = api
         self.page_size = page_size if page_size is not None else 100
         self._include_deleted = include_deleted if self.enable_deleted else False
-        self.max_batch_size = max_batch_size if max_batch_size is not None else 50
+        self.max_batch_size = self._initial_max_batch_size = max_batch_size if max_batch_size is not None else 50
 
     @cached_property
     def fields(self) -> List[str]:
@@ -72,22 +73,25 @@ def execute_in_batch(self, pending_requests: Iterable[FacebookRequest]) -> Itera
             requests_q.put(r)
 
         def success(response: FacebookResponse):
+            self.max_batch_size = self._initial_max_batch_size
             records.append(response.json())
 
+        def reduce_batch_size():
+            if self.max_batch_size == 1:
+                raise RuntimeError("Batch request failed with only 1 request in it")
+            self.max_batch_size = ceil(self.max_batch_size / 2)
+            logger.warning(f"Caught retryable error: Too much data was requested in batch. Reducing batch size to {self.max_batch_size}")
+
         def failure(response: FacebookResponse, request: Optional[FacebookRequest] = None):
             # although it is Optional in the signature for compatibility, we need it always
             assert request, "Missing a request object"
             resp_body = response.json()
-            if not isinstance(resp_body, dict) or (
-                resp_body.get("error", {}).get("code") != FACEBOOK_BATCH_ERROR_CODE
-                and resp_body.get("error", {}).get("message")
-                != "Please reduce the amount of data you're asking for, then retry your request"
-            ):
-                # response body is not a json object or the error code is different
+            if not isinstance(resp_body, dict):
                 raise RuntimeError(f"Batch request failed with response: {resp_body}")
-            if resp_body.get("error", {}).get("message") == "Please reduce the amount of data you're asking for, then retry your request":
-                logger.warning("Caught retryable error: Too much data was requested in batch. Reducing batch size...")
-                self.max_batch_size = int(self.max_batch_size / 2)
+            elif resp_body.get("error", {}).get("message") == "Please reduce the amount of data you're asking for, then retry your request":
+                reduce_batch_size()
+            elif resp_body.get("error", {}).get("code") != FACEBOOK_BATCH_ERROR_CODE:
+                raise RuntimeError(f"Batch request failed with response: {resp_body}; unknown error code")
             requests_q.put(request)
 
         api_batch: FacebookAdsApiBatch = self._api.api.new_batch()

airbyte-integrations/connectors/source-facebook-marketing/unit_tests/test_base_streams.py

@@ -128,6 +128,31 @@ def test_execute_in_batch_with_fails(self, api, batch, mock_batch_responses):
         assert batch.add_request.call_count == len(requests)
         assert batch.execute.call_count == 1
 
+    def test_batch_reduce_amount(self, api, batch, mock_batch_responses, caplog):
+        """Reduce batch size to 1 and finally fail with message"""
+
+        retryable_message = "Please reduce the amount of data you're asking for, then retry your request"
+        mock_batch_responses(
+            [
+                {
+                    "json": [
+                        {"body": {"error": {"message": retryable_message}}, "code": 500, "headers": {}},
+                    ],
+                }
+            ]
+        )
+
+        stream = SomeTestStream(api=api)
+        requests = [FacebookRequest("node", "GET", "endpoint")]
+        with pytest.raises(RuntimeError, match="Batch request failed with only 1 request in..."):
+            list(stream.execute_in_batch(requests))
+
+        assert batch.add_request.call_count == 7
+        assert batch.execute.call_count == 7
+        assert stream.max_batch_size == 1
+        for index, expected_batch_size in enumerate(["25", "13", "7", "4", "2", "1"]):
+            assert expected_batch_size in caplog.messages[index]
+
     def test_execute_in_batch_retry_batch_error(self, api, batch, mock_batch_responses):
         """Should retry without exception when any request returns 960 error code"""
         mock_batch_responses(

docs/integrations/sources/facebook-marketing.md

@@ -175,6 +175,7 @@ The Facebook Marketing connector uses the `lookback_window` parameter to repeate
 
 | Version | Date       | Pull Request                                             | Subject                                                                                                                                                                                                                                                                                           |
 |:--------|:-----------|:---------------------------------------------------------|:--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| 1.1.6   | 2023-08-18 | [29642](https://github.com/airbytehq/airbyte/pull/29642) | Stop batch requests if only 1 left in a batch                                                                                                                                                                                                                                                     |
 | 1.1.5   | 2023-08-18 | [29610](https://github.com/airbytehq/airbyte/pull/29610) | Automatically reduce batch size                                                                                                                                                                                                                                                                   |
 | 1.1.4   | 2023-08-08 | [29412](https://github.com/airbytehq/airbyte/pull/29412) | Add new custom_audience stream                                                                                                                                                                                                                                                                    |
 | 1.1.3   | 2023-08-08 | [29208](https://github.com/airbytehq/airbyte/pull/29208) | Add account type validation during check                                                                                                                                                                                                                                                          |