Source Mixpanel: "export" stream make line parsing more robust

airbyte-integrations/connectors/source-mixpanel/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=0.1.28
+LABEL io.airbyte.version=0.1.29
 LABEL io.airbyte.name=airbyte/source-mixpanel

airbyte-integrations/connectors/source-mixpanel/setup.py

@@ -6,7 +6,7 @@
 from setuptools import find_packages, setup
 
 MAIN_REQUIREMENTS = [
-    "airbyte-cdk~=0.1",
+    "airbyte-cdk~=0.2",
 ]
 
 TEST_REQUIREMENTS = ["pytest~=6.1", "source-acceptance-test", "pytest-mock~=3.6", "requests_mock~=1.8"]

airbyte-integrations/connectors/source-mixpanel/source_mixpanel/streams/export.py

@@ -85,6 +85,32 @@ def url_base(self):
     def path(self, **kwargs) -> str:
         return "export"
 
+    def iter_dicts(self, lines):
+        """
+        The incoming stream has to be JSON lines format.
+        From time to time for some reason, the one record can be split into multiple lines.
+        We try to combine such split parts into one record only if parts go nearby.
+        """
+        parts = []
+        for record_line in lines:
+            if record_line == "terminated early":
+                self.logger.warning(f"Couldn't fetch data from Export API. Response: {record_line}")
+                return
+            try:
+                yield json.loads(record_line)
+            except ValueError:
+                parts.append(record_line)
+            else:
+                parts = []
+
+            if len(parts) > 1:
+                try:
+                    yield json.loads("".join(parts))
+                except ValueError:
+                    pass
+                else:
+                    parts = []
+
     def process_response(self, response: requests.Response, **kwargs) -> Iterable[Mapping]:
         """Export API return response in JSONL format but each line is a valid JSON object
         Raw item example:
@@ -106,11 +132,7 @@ def process_response(self, response: requests.Response, **kwargs) -> Iterable[Ma
         """
 
         # We prefer response.iter_lines() to response.text.split_lines() as the later can missparse text properties embeding linebreaks
-        for record_line in response.iter_lines(decode_unicode=True):
-            if record_line == "terminated early":
-                self.logger.warning(f"Couldn't fetch data from Export API. Response: {record_line}")
-                break
-            record = json.loads(record_line)
+        for record in self.iter_dicts(response.iter_lines(decode_unicode=True)):
             # transform record into flat dict structure
             item = {"event": record["event"]}
             properties = record["properties"]

airbyte-integrations/connectors/source-mixpanel/unit_tests/test_streams.py

@@ -2,6 +2,7 @@
 # Copyright (c) 2022 Airbyte, Inc., all rights reserved.
 #
 
+import json
 from datetime import timedelta
 from unittest.mock import MagicMock
 
@@ -456,3 +457,14 @@ def test_export_terminated_early(requests_mock, config):
     stream = Export(authenticator=MagicMock(), **config)
     requests_mock.register_uri("GET", get_url_to_mock(stream), text="terminated early\n")
     assert list(read_full_refresh(stream)) == []
+
+
+def test_export_iter_dicts(config):
+    stream = Export(authenticator=MagicMock(), **config)
+    record = {"key1": "value1", "key2": "value2"}
+    record_string = json.dumps(record)
+    assert list(stream.iter_dicts([record_string, record_string])) == [record, record]
+    # combine record from 2 standing nearby parts
+    assert list(stream.iter_dicts([record_string, record_string[:2], record_string[2:], record_string])) == [record, record, record]
+    # drop record parts because they are not standing nearby
+    assert list(stream.iter_dicts([record_string, record_string[:2], record_string, record_string[2:]])) == [record, record]

docs/integrations/sources/mixpanel.md

@@ -50,7 +50,8 @@ Syncing huge date windows may take longer due to Mixpanel's low API rate-limits
 
 | Version | Date       | Pull Request                                             | Subject                                                                                              |
 | :------ | :--------- | :------------------------------------------------------- | :--------------------------------------------------------------------------------------------------- |
-| 0.1.28  | 2022-10-06 | [17699](https://github.com/airbytehq/airbyte/pull/17699) | Fix discover step issue cursor field None                                  |
+| 0.1.29  | 2022-11-02 | [18846](https://github.com/airbytehq/airbyte/pull/18846) | For "export" stream make line parsing more robust                                                    |
+| 0.1.28  | 2022-10-06 | [17699](https://github.com/airbytehq/airbyte/pull/17699) | Fix discover step issue cursor field None                                                            |
 | 0.1.27  | 2022-09-29 | [17415](https://github.com/airbytehq/airbyte/pull/17415) | Disable stream "cohort_members" on discover if not access                                            |
 | 0.1.26  | 2022-09-28 | [17304](https://github.com/airbytehq/airbyte/pull/17304) | Migrate to per-stream states.                                                                        |
 | 0.1.25  | 2022-09-27 | [17145](https://github.com/airbytehq/airbyte/pull/17145) | Disable streams "export", "engage" on discover if not access                                         |