low-code connectors: reset pagination between stream slices (#15330)

* reset pagination between stream slices

* Update airbyte-cdk/python/airbyte_cdk/sources/declarative/retrievers/simple_retriever.py

Co-authored-by: Sherif A. Nada <snadalive@gmail.com>

* Update airbyte-cdk/python/airbyte_cdk/sources/declarative/retrievers/simple_retriever.py

Co-authored-by: Sherif A. Nada <snadalive@gmail.com>

* patch

Co-authored-by: Sherif A. Nada <snadalive@gmail.com>

airbyte-cdk/python/airbyte_cdk/sources/declarative/requesters/paginators/limit_paginator.py

@@ -147,6 +147,9 @@ class LimitPaginator(Paginator, JsonSchemaMixin):
     ) -> Mapping[str, Any]:
         return self._get_request_options(RequestOptionType.body_json)
 
+    def reset(self):
+        self.pagination_strategy.reset()
+
     def _get_request_options(self, option_type: RequestOptionType) -> Mapping[str, Any]:
         options = {}
         if self.page_token_option.inject_into == option_type:

airbyte-cdk/python/airbyte_cdk/sources/declarative/requesters/paginators/no_pagination.py

@@ -59,3 +59,7 @@ class NoPagination(Paginator):
 
     def next_page_token(self, response: requests.Response, last_records: List[Mapping[str, Any]]) -> Mapping[str, Any]:
         return {}
+
+    def reset(self):
+        # No state to reset
+        pass

airbyte-cdk/python/airbyte_cdk/sources/declarative/requesters/paginators/paginator.py

@@ -19,6 +19,12 @@ class Paginator(RequestOptionsProvider):
     If the next_page_token is the path to the next page of records, then it should be accessed through the `path` method
     """
 
+    @abstractmethod
+    def reset(self):
+        """
+        Reset the pagination's inner state
+        """
+
     @abstractmethod
     def next_page_token(self, response: requests.Response, last_records: List[Mapping[str, Any]]) -> Optional[Mapping[str, Any]]:
         """

airbyte-cdk/python/airbyte_cdk/sources/declarative/requesters/paginators/strategies/cursor_pagination_strategy.py

@@ -46,3 +46,7 @@ class CursorPaginationStrategy(PaginationStrategy, JsonSchemaMixin):
                 return None
         token = self.cursor_value.eval(config=self.config, last_records=last_records, response=decoded_response)
         return token if token else None
+
+    def reset(self):
+        # No state to reset
+        pass

airbyte-cdk/python/airbyte_cdk/sources/declarative/requesters/paginators/strategies/offset_increment.py

@@ -31,3 +31,6 @@ class OffsetIncrement(PaginationStrategy, JsonSchemaMixin):
         else:
             self._offset += len(last_records)
             return self._offset
+
+    def reset(self):
+        self._offset = 0

airbyte-cdk/python/airbyte_cdk/sources/declarative/requesters/paginators/strategies/page_increment.py

@@ -23,11 +23,14 @@ class PageIncrement(PaginationStrategy, JsonSchemaMixin):
     options: InitVar[Mapping[str, Any]]
 
     def __post_init__(self, options: Mapping[str, Any]):
-        self._offset = 0
+        self._page = 0
 
     def next_page_token(self, response: requests.Response, last_records: List[Mapping[str, Any]]) -> Optional[Any]:
         if len(last_records) < self.page_size:
             return None
         else:
-            self._offset += 1
-            return self._offset
+            self._page += 1
+            return self._page
+
+    def reset(self):
+        self._page = 0

airbyte-cdk/python/airbyte_cdk/sources/declarative/requesters/paginators/strategies/pagination_strategy.py

@@ -24,3 +24,9 @@ class PaginationStrategy(JsonSchemaMixin):
         :return: next page token. Returns None if there are no more pages to fetch
         """
         pass
+
+    @abstractmethod
+    def reset(self):
+        """
+        Reset the pagination's inner state
+        """

airbyte-cdk/python/airbyte_cdk/sources/declarative/retrievers/simple_retriever.py

@@ -342,6 +342,7 @@ class SimpleRetriever(Retriever, HttpStream, JsonSchemaMixin):
     ) -> Iterable[Mapping[str, Any]]:
         # Warning: use self.state instead of the stream_state passed as argument!
         stream_slice = stream_slice or {}  # None-check
+        self.paginator.reset()
         records_generator = HttpStream.read_records(self, sync_mode, cursor_field, stream_slice, self.state)
         for r in records_generator:
             self.stream_slicer.update_cursor(stream_slice, last_record=r)

airbyte-cdk/python/unit_tests/sources/declarative/requesters/paginators/test_limit_paginator.py

@@ -3,6 +3,7 @@
 #
 
 import json
+from unittest.mock import MagicMock
 
 import pytest
 import requests
@@ -159,3 +160,13 @@ def test_limit_cannot_be_set_in_path():
         assert False
     except ValueError:
         pass
+
+
+def test_reset():
+    limit_request_option = RequestOption(inject_into=RequestOptionType.request_parameter, field_name="limit", options={})
+    page_token_request_option = RequestOption(inject_into=RequestOptionType.request_parameter, field_name="offset", options={})
+    url_base = "https://airbyte.io"
+    config = {}
+    strategy = MagicMock()
+    LimitPaginator(2, limit_request_option, page_token_request_option, strategy, config, url_base, options={}).reset()
+    assert strategy.reset.called

airbyte-cdk/python/unit_tests/sources/declarative/requesters/paginators/test_offset_increment.py

@@ -30,3 +30,6 @@ def test_offset_increment_paginator_strategy(test_name, page_size, expected_next
     next_page_token = paginator_strategy.next_page_token(response, last_records)
     assert expected_next_page_token == next_page_token
     assert expected_offset == paginator_strategy._offset
+
+    paginator_strategy.reset()
+    assert 0 == paginator_strategy._offset

airbyte-cdk/python/unit_tests/sources/declarative/requesters/paginators/test_page_increment.py

@@ -18,7 +18,7 @@ from airbyte_cdk.sources.declarative.requesters.paginators.strategies.page_incre
 )
 def test_page_increment_paginator_strategy(test_name, page_size, expected_next_page_token, expected_offset):
     paginator_strategy = PageIncrement(page_size, options={})
-    assert paginator_strategy._offset == 0
+    assert paginator_strategy._page == 0
 
     response = requests.Response()
 
@@ -29,4 +29,7 @@ def test_page_increment_paginator_strategy(test_name, page_size, expected_next_p
 
     next_page_token = paginator_strategy.next_page_token(response, last_records)
     assert expected_next_page_token == next_page_token
-    assert expected_offset == paginator_strategy._offset
+    assert expected_offset == paginator_strategy._page
+
+    paginator_strategy.reset()
+    assert 0 == paginator_strategy._page

airbyte-cdk/python/unit_tests/sources/declarative/retrievers/test_simple_retriever.py

@@ -2,7 +2,7 @@
 # Copyright (c) 2022 Airbyte, Inc., all rights reserved.
 #
 
-from unittest.mock import MagicMock
+from unittest.mock import MagicMock, patch
 
 import airbyte_cdk.sources.declarative.requesters.error_handlers.response_status as response_status
 import pytest
@@ -15,13 +15,15 @@ from airbyte_cdk.sources.declarative.requesters.request_option import RequestOpt
 from airbyte_cdk.sources.declarative.requesters.requester import HttpMethod
 from airbyte_cdk.sources.declarative.retrievers.simple_retriever import SimpleRetriever
 from airbyte_cdk.sources.streams.http.auth import NoAuth
+from airbyte_cdk.sources.streams.http.http import HttpStream
 
 primary_key = "pk"
 records = [{"id": 1}, {"id": 2}]
 config = {}
 
 
-def test_simple_retriever_full():
+@patch.object(HttpStream, "read_records", return_value=[])
+def test_simple_retriever_full(mock_http_stream):
     requester = MagicMock()
     request_params = {"param": "value"}
     requester.get_request_params.return_value = request_params
@@ -53,6 +55,9 @@ def test_simple_retriever_full():
     backoff_time = 60
     should_retry = ResponseStatus.retry(backoff_time)
     requester.should_retry.return_value = should_retry
+    request_body_json = {"body": "json"}
+    requester.request_body_json.return_value = request_body_json
+
     request_body_data = {"body": "data"}
     requester.get_request_body_data.return_value = request_body_data
     request_body_json = {"body": "json"}
@@ -92,12 +97,14 @@ def test_simple_retriever_full():
     assert not retriever.raise_on_http_errors
     assert retriever.should_retry(requests.Response())
     assert retriever.backoff_time(requests.Response()) == backoff_time
-    assert retriever.request_body_data(None, None, None) == request_body_data
     assert retriever.request_body_json(None, None, None) == request_body_json
     assert retriever.request_kwargs(None, None, None) == request_kwargs
     assert retriever.cache_filename == cache_filename
     assert retriever.use_cache == use_cache
 
+    [r for r in retriever.read_records(SyncMode.full_refresh)]
+    paginator.reset.assert_called()
+
 
 @pytest.mark.parametrize(
     "test_name, requester_response, expected_should_retry, expected_backoff_time",