Checkpointed GitHub connector (#4307)

* WIP github checkpointing

* first draft of github checkpointing

* nit

* CW comments

* github basic connector test

* connector test env var

* secrets cant start with GITHUB_

* unit tests and bug fix

* connector failures

* address CW comments

* validation fix

* validation fix

* remove prints

* fixed tests

* 100 items per page

.github/workflows/pr-python-connector-tests.yml

@@ -45,6 +45,8 @@ env:
   SHAREPOINT_CLIENT_SECRET: ${{ secrets.SHAREPOINT_CLIENT_SECRET }}
   SHAREPOINT_CLIENT_DIRECTORY_ID: ${{ secrets.SHAREPOINT_CLIENT_DIRECTORY_ID }}
   SHAREPOINT_SITE: ${{ secrets.SHAREPOINT_SITE }}
+  # Github
+  ACCESS_TOKEN_GITHUB: ${{ secrets.ACCESS_TOKEN_GITHUB }}
   # Gitbook
   GITBOOK_SPACE_ID: ${{ secrets.GITBOOK_SPACE_ID }}
   GITBOOK_API_KEY: ${{ secrets.GITBOOK_API_KEY }}

backend/onyx/background/indexing/run_indexing.py

@@ -435,7 +435,7 @@ def _run_indexing(
 
         while checkpoint.has_more:
             logger.info(
-                f"Running '{ctx.source}' connector with checkpoint: {checkpoint}"
+                f"Running '{ctx.source.value}' connector with checkpoint: {checkpoint}"
             )
             for document_batch, failure, next_checkpoint in connector_runner.run(
                 checkpoint

backend/onyx/configs/app_configs.py

@@ -157,10 +157,7 @@ VESPA_CLOUD_CERT_PATH = os.environ.get("VESPA_CLOUD_CERT_PATH")
 VESPA_CLOUD_KEY_PATH = os.environ.get("VESPA_CLOUD_KEY_PATH")
 
 # Number of documents in a batch during indexing (further batching done by chunks before passing to bi-encoder)
-try:
-    INDEX_BATCH_SIZE = int(os.environ.get("INDEX_BATCH_SIZE", 16))
-except ValueError:
-    INDEX_BATCH_SIZE = 16
+INDEX_BATCH_SIZE = int(os.environ.get("INDEX_BATCH_SIZE") or 16)
 
 MAX_DRIVE_WORKERS = int(os.environ.get("MAX_DRIVE_WORKERS", 4))
 

backend/onyx/connectors/github/connector.py

@@ -1,8 +1,10 @@
+import copy
 import time
-from collections.abc import Iterator
+from collections.abc import Generator
 from datetime import datetime
 from datetime import timedelta
 from datetime import timezone
+from enum import Enum
 from typing import Any
 from typing import cast
 
@@ -13,26 +15,30 @@ from github.GithubException import GithubException
 from github.Issue import Issue
 from github.PaginatedList import PaginatedList
 from github.PullRequest import PullRequest
+from github.Requester import Requester
+from pydantic import BaseModel
+from typing_extensions import override
 
 from onyx.configs.app_configs import GITHUB_CONNECTOR_BASE_URL
-from onyx.configs.app_configs import INDEX_BATCH_SIZE
 from onyx.configs.constants import DocumentSource
 from onyx.connectors.exceptions import ConnectorValidationError
 from onyx.connectors.exceptions import CredentialExpiredError
 from onyx.connectors.exceptions import InsufficientPermissionsError
 from onyx.connectors.exceptions import UnexpectedValidationError
-from onyx.connectors.interfaces import GenerateDocumentsOutput
-from onyx.connectors.interfaces import LoadConnector
-from onyx.connectors.interfaces import PollConnector
+from onyx.connectors.interfaces import CheckpointConnector
+from onyx.connectors.interfaces import CheckpointOutput
+from onyx.connectors.interfaces import ConnectorCheckpoint
+from onyx.connectors.interfaces import ConnectorFailure
 from onyx.connectors.interfaces import SecondsSinceUnixEpoch
 from onyx.connectors.models import ConnectorMissingCredentialError
 from onyx.connectors.models import Document
+from onyx.connectors.models import DocumentFailure
 from onyx.connectors.models import TextSection
-from onyx.utils.batching import batch_generator
 from onyx.utils.logger import setup_logger
 
 logger = setup_logger()
 
+ITEMS_PER_PAGE = 100
 
 _MAX_NUM_RATE_LIMIT_RETRIES = 5
 
@@ -48,7 +54,7 @@ def _sleep_after_rate_limit_exception(github_client: Github) -> None:
 
 def _get_batch_rate_limited(
     git_objs: PaginatedList, page_num: int, github_client: Github, attempt_num: int = 0
-) -> list[Any]:
+) -> list[PullRequest | Issue]:
     if attempt_num > _MAX_NUM_RATE_LIMIT_RETRIES:
         raise RuntimeError(
             "Re-tried fetching batch too many times. Something is going wrong with fetching objects from Github"
@@ -69,21 +75,6 @@ def _get_batch_rate_limited(
         )
 
 
-def _batch_github_objects(
-    git_objs: PaginatedList, github_client: Github, batch_size: int
-) -> Iterator[list[Any]]:
-    page_num = 0
-    while True:
-        batch = _get_batch_rate_limited(git_objs, page_num, github_client)
-        page_num += 1
-
-        if not batch:
-            break
-
-        for mini_batch in batch_generator(batch, batch_size=batch_size):
-            yield mini_batch
-
-
 def _convert_pr_to_document(pull_request: PullRequest) -> Document:
     return Document(
         id=pull_request.html_url,
@@ -95,7 +86,9 @@ def _convert_pr_to_document(pull_request: PullRequest) -> Document:
         # updated_at is UTC time but is timezone unaware, explicitly add UTC
         # as there is logic in indexing to prevent wrong timestamped docs
         # due to local time discrepancies with UTC
-        doc_updated_at=pull_request.updated_at.replace(tzinfo=timezone.utc),
+        doc_updated_at=pull_request.updated_at.replace(tzinfo=timezone.utc)
+        if pull_request.updated_at
+        else None,
         metadata={
             "merged": str(pull_request.merged),
             "state": pull_request.state,
@@ -122,31 +115,58 @@ def _convert_issue_to_document(issue: Issue) -> Document:
     )
 
 
-class GithubConnector(LoadConnector, PollConnector):
+class SerializedRepository(BaseModel):
+    # id is part of the raw_data as well, just pulled out for convenience
+    id: int
+    headers: dict[str, str | int]
+    raw_data: dict[str, Any]
+
+    def to_Repository(self, requester: Requester) -> Repository.Repository:
+        return Repository.Repository(
+            requester, self.headers, self.raw_data, completed=True
+        )
+
+
+class GithubConnectorStage(Enum):
+    START = "start"
+    PRS = "prs"
+    ISSUES = "issues"
+
+
+class GithubConnectorCheckpoint(ConnectorCheckpoint):
+    stage: GithubConnectorStage
+    curr_page: int
+
+    cached_repo_ids: list[int] | None = None
+    cached_repo: SerializedRepository | None = None
+
+
+class GithubConnector(CheckpointConnector[GithubConnectorCheckpoint]):
     def __init__(
         self,
         repo_owner: str,
         repositories: str | None = None,
-        batch_size: int = INDEX_BATCH_SIZE,
         state_filter: str = "all",
         include_prs: bool = True,
         include_issues: bool = False,
     ) -> None:
         self.repo_owner = repo_owner
         self.repositories = repositories
-        self.batch_size = batch_size
         self.state_filter = state_filter
         self.include_prs = include_prs
         self.include_issues = include_issues
         self.github_client: Github | None = None
 
     def load_credentials(self, credentials: dict[str, Any]) -> dict[str, Any] | None:
+        # defaults to 30 items per page, can be set to as high as 100
         self.github_client = (
             Github(
-                credentials["github_access_token"], base_url=GITHUB_CONNECTOR_BASE_URL
+                credentials["github_access_token"],
+                base_url=GITHUB_CONNECTOR_BASE_URL,
+                per_page=ITEMS_PER_PAGE,
             )
             if GITHUB_CONNECTOR_BASE_URL
-            else Github(credentials["github_access_token"])
+            else Github(credentials["github_access_token"], per_page=ITEMS_PER_PAGE)
         )
         return None
 
@@ -217,85 +237,193 @@ class GithubConnector(LoadConnector, PollConnector):
             return self._get_all_repos(github_client, attempt_num + 1)
 
     def _fetch_from_github(
-        self, start: datetime | None = None, end: datetime | None = None
-    ) -> GenerateDocumentsOutput:
+        self,
+        checkpoint: GithubConnectorCheckpoint,
+        start: datetime | None = None,
+        end: datetime | None = None,
+    ) -> Generator[Document | ConnectorFailure, None, GithubConnectorCheckpoint]:
         if self.github_client is None:
             raise ConnectorMissingCredentialError("GitHub")
 
-        repos = []
-        if self.repositories:
-            if "," in self.repositories:
-                # Multiple repositories specified
-                repos = self._get_github_repos(self.github_client)
+        checkpoint = copy.deepcopy(checkpoint)
+
+        # First run of the connector, fetch all repos and store in checkpoint
+        if checkpoint.cached_repo_ids is None:
+            repos = []
+            if self.repositories:
+                if "," in self.repositories:
+                    # Multiple repositories specified
+                    repos = self._get_github_repos(self.github_client)
+                else:
+                    # Single repository (backward compatibility)
+                    repos = [self._get_github_repo(self.github_client)]
             else:
-                # Single repository (backward compatibility)
-                repos = [self._get_github_repo(self.github_client)]
-        else:
-            # All repositories
-            repos = self._get_all_repos(self.github_client)
+                # All repositories
+                repos = self._get_all_repos(self.github_client)
+            if not repos:
+                checkpoint.has_more = False
+                return checkpoint
 
-        for repo in repos:
-            if self.include_prs:
-                logger.info(f"Fetching PRs for repo: {repo.name}")
-                pull_requests = repo.get_pulls(
-                    state=self.state_filter, sort="updated", direction="desc"
-                )
+            checkpoint.cached_repo_ids = sorted([repo.id for repo in repos])
+            checkpoint.cached_repo = SerializedRepository(
+                id=checkpoint.cached_repo_ids[0],
+                headers=repos[0].raw_headers,
+                raw_data=repos[0].raw_data,
+            )
+            checkpoint.stage = GithubConnectorStage.PRS
+            checkpoint.curr_page = 0
+            # save checkpoint with repo ids retrieved
+            return checkpoint
 
-                for pr_batch in _batch_github_objects(
-                    pull_requests, self.github_client, self.batch_size
+        assert checkpoint.cached_repo is not None, "No repo saved in checkpoint"
+        repo = checkpoint.cached_repo.to_Repository(self.github_client.requester)
+
+        if self.include_prs and checkpoint.stage == GithubConnectorStage.PRS:
+            logger.info(f"Fetching PRs for repo: {repo.name}")
+            pull_requests = repo.get_pulls(
+                state=self.state_filter, sort="updated", direction="desc"
+            )
+
+            doc_batch: list[Document] = []
+            pr_batch = _get_batch_rate_limited(
+                pull_requests, checkpoint.curr_page, self.github_client
+            )
+            checkpoint.curr_page += 1
+            done_with_prs = False
+            for pr in pr_batch:
+                # we iterate backwards in time, so at this point we stop processing prs
+                if (
+                    start is not None
+                    and pr.updated_at
+                    and pr.updated_at.replace(tzinfo=timezone.utc) < start
                 ):
-                    doc_batch: list[Document] = []
-                    for pr in pr_batch:
-                        if start is not None and pr.updated_at < start:
-                            yield doc_batch
-                            break
-                        if end is not None and pr.updated_at > end:
-                            continue
-                        doc_batch.append(_convert_pr_to_document(cast(PullRequest, pr)))
-                    yield doc_batch
-
-            if self.include_issues:
-                logger.info(f"Fetching issues for repo: {repo.name}")
-                issues = repo.get_issues(
-                    state=self.state_filter, sort="updated", direction="desc"
-                )
-
-                for issue_batch in _batch_github_objects(
-                    issues, self.github_client, self.batch_size
+                    yield from doc_batch
+                    done_with_prs = True
+                    break
+                # Skip PRs updated after the end date
+                if (
+                    end is not None
+                    and pr.updated_at
+                    and pr.updated_at.replace(tzinfo=timezone.utc) > end
                 ):
-                    doc_batch = []
-                    for issue in issue_batch:
-                        issue = cast(Issue, issue)
-                        if start is not None and issue.updated_at < start:
-                            yield doc_batch
-                            break
-                        if end is not None and issue.updated_at > end:
-                            continue
-                        if issue.pull_request is not None:
-                            # PRs are handled separately
-                            continue
-                        doc_batch.append(_convert_issue_to_document(issue))
-                    yield doc_batch
+                    continue
+                try:
+                    doc_batch.append(_convert_pr_to_document(cast(PullRequest, pr)))
+                except Exception as e:
+                    error_msg = f"Error converting PR to document: {e}"
+                    logger.exception(error_msg)
+                    yield ConnectorFailure(
+                        failed_document=DocumentFailure(
+                            document_id=str(pr.id), document_link=pr.html_url
+                        ),
+                        failure_message=error_msg,
+                        exception=e,
+                    )
+                    continue
 
-    def load_from_state(self) -> GenerateDocumentsOutput:
-        return self._fetch_from_github()
+            # if we found any PRs on the page, yield any associated documents and return the checkpoint
+            if not done_with_prs and len(pr_batch) > 0:
+                yield from doc_batch
+                return checkpoint
 
-    def poll_source(
-        self, start: SecondsSinceUnixEpoch, end: SecondsSinceUnixEpoch
-    ) -> GenerateDocumentsOutput:
-        start_datetime = datetime.utcfromtimestamp(start)
-        end_datetime = datetime.utcfromtimestamp(end)
+            # if we went past the start date during the loop or there are no more
+            # prs to get, we move on to issues
+            checkpoint.stage = GithubConnectorStage.ISSUES
+            checkpoint.curr_page = 0
+
+        checkpoint.stage = GithubConnectorStage.ISSUES
+
+        if self.include_issues and checkpoint.stage == GithubConnectorStage.ISSUES:
+            logger.info(f"Fetching issues for repo: {repo.name}")
+            issues = repo.get_issues(
+                state=self.state_filter, sort="updated", direction="desc"
+            )
+
+            doc_batch = []
+            issue_batch = _get_batch_rate_limited(
+                issues, checkpoint.curr_page, self.github_client
+            )
+            checkpoint.curr_page += 1
+            done_with_issues = False
+            for issue in cast(list[Issue], issue_batch):
+                # we iterate backwards in time, so at this point we stop processing prs
+                if (
+                    start is not None
+                    and issue.updated_at.replace(tzinfo=timezone.utc) < start
+                ):
+                    yield from doc_batch
+                    done_with_issues = True
+                    break
+                # Skip PRs updated after the end date
+                if (
+                    end is not None
+                    and issue.updated_at.replace(tzinfo=timezone.utc) > end
+                ):
+                    continue
+
+                if issue.pull_request is not None:
+                    # PRs are handled separately
+                    continue
+
+                try:
+                    doc_batch.append(_convert_issue_to_document(issue))
+                except Exception as e:
+                    error_msg = f"Error converting issue to document: {e}"
+                    logger.exception(error_msg)
+                    yield ConnectorFailure(
+                        failed_document=DocumentFailure(
+                            document_id=str(issue.id),
+                            document_link=issue.html_url,
+                        ),
+                        failure_message=error_msg,
+                        exception=e,
+                    )
+                    continue
+
+            # if we found any issues on the page, yield them and return the checkpoint
+            if not done_with_issues and len(issue_batch) > 0:
+                yield from doc_batch
+                return checkpoint
+
+            # if we went past the start date during the loop or there are no more
+            # issues to get, we move on to the next repo
+            checkpoint.stage = GithubConnectorStage.PRS
+            checkpoint.curr_page = 0
+
+        checkpoint.has_more = len(checkpoint.cached_repo_ids) > 1
+        if checkpoint.cached_repo_ids:
+            next_id = checkpoint.cached_repo_ids.pop()
+            next_repo = self.github_client.get_repo(next_id)
+            checkpoint.cached_repo = SerializedRepository(
+                id=next_id,
+                headers=next_repo.raw_headers,
+                raw_data=next_repo.raw_data,
+            )
+
+        return checkpoint
+
+    @override
+    def load_from_checkpoint(
+        self,
+        start: SecondsSinceUnixEpoch,
+        end: SecondsSinceUnixEpoch,
+        checkpoint: GithubConnectorCheckpoint,
+    ) -> CheckpointOutput[GithubConnectorCheckpoint]:
+        start_datetime = datetime.fromtimestamp(start, tz=timezone.utc)
+        end_datetime = datetime.fromtimestamp(end, tz=timezone.utc)
 
         # Move start time back by 3 hours, since some Issues/PRs are getting dropped
         # Could be due to delayed processing on GitHub side
         # The non-updated issues since last poll will be shortcut-ed and not embedded
         adjusted_start_datetime = start_datetime - timedelta(hours=3)
 
-        epoch = datetime.utcfromtimestamp(0)
+        epoch = datetime.fromtimestamp(0, tz=timezone.utc)
         if adjusted_start_datetime < epoch:
             adjusted_start_datetime = epoch
 
-        return self._fetch_from_github(adjusted_start_datetime, end_datetime)
+        return self._fetch_from_github(
+            checkpoint, start=adjusted_start_datetime, end=end_datetime
+        )
 
     def validate_connector_settings(self) -> None:
         if self.github_client is None:
@@ -397,6 +525,16 @@ class GithubConnector(LoadConnector, PollConnector):
                 f"Unexpected error during GitHub settings validation: {exc}"
             )
 
+    def validate_checkpoint_json(
+        self, checkpoint_json: str
+    ) -> GithubConnectorCheckpoint:
+        return GithubConnectorCheckpoint.model_validate_json(checkpoint_json)
+
+    def build_dummy_checkpoint(self) -> GithubConnectorCheckpoint:
+        return GithubConnectorCheckpoint(
+            stage=GithubConnectorStage.PRS, curr_page=0, has_more=True
+        )
+
 
 if __name__ == "__main__":
     import os
@@ -406,7 +544,9 @@ if __name__ == "__main__":
         repositories=os.environ["REPOSITORIES"],
     )
     connector.load_credentials(
-        {"github_access_token": os.environ["GITHUB_ACCESS_TOKEN"]}
+        {"github_access_token": os.environ["ACCESS_TOKEN_GITHUB"]}
+    )
+    document_batches = connector.load_from_checkpoint(
+        0, time.time(), connector.build_dummy_checkpoint()
     )
-    document_batches = connector.load_from_state()
     print(next(document_batches))

backend/requirements/default.txt

@@ -56,7 +56,7 @@ puremagic==1.28
 pyairtable==3.0.1
 pycryptodome==3.19.1
 pydantic==2.8.2
-PyGithub==1.58.2
+PyGithub==2.5.0
 python-dateutil==2.8.2
 python-gitlab==3.9.0
 python-pptx==0.6.23

backend/tests/daily/connectors/github/test_github_basic.py

@@ -0,0 +1,54 @@
+import os
+import time
+
+import pytest
+
+from onyx.configs.constants import DocumentSource
+from onyx.connectors.github.connector import GithubConnector
+from tests.daily.connectors.utils import load_all_docs_from_checkpoint_connector
+
+
+@pytest.fixture
+def github_connector() -> GithubConnector:
+    connector = GithubConnector(
+        repo_owner="onyx-dot-app",
+        repositories="documentation",
+        include_prs=True,
+        include_issues=True,
+    )
+    connector.load_credentials(
+        {
+            "github_access_token": os.environ["ACCESS_TOKEN_GITHUB"],
+        }
+    )
+    return connector
+
+
+def test_github_connector_basic(github_connector: GithubConnector) -> None:
+    docs = load_all_docs_from_checkpoint_connector(
+        connector=github_connector,
+        start=0,
+        end=time.time(),
+    )
+    assert len(docs) > 0  # We expect at least one PR to exist
+
+    # Test the first document's structure
+    doc = docs[0]
+
+    # Verify basic document properties
+    assert doc.source == DocumentSource.GITHUB
+    assert doc.secondary_owners is None
+    assert doc.from_ingestion_api is False
+    assert doc.additional_info is None
+
+    # Verify GitHub-specific properties
+    assert "github.com" in doc.id  # Should be a GitHub URL
+    assert doc.metadata is not None
+    assert "state" in doc.metadata
+    assert "merged" in doc.metadata
+
+    # Verify sections
+    assert len(doc.sections) == 1
+    section = doc.sections[0]
+    assert section.link == doc.id  # Section link should match document ID
+    assert isinstance(section.text, str)  # Should have some text content

backend/tests/unit/onyx/connectors/github/test_github_checkpointing.py

@@ -0,0 +1,441 @@
+import time
+from collections.abc import Callable
+from collections.abc import Generator
+from datetime import datetime
+from datetime import timezone
+from typing import cast
+from unittest.mock import MagicMock
+from unittest.mock import patch
+
+import pytest
+from github import Github
+from github import GithubException
+from github import RateLimitExceededException
+from github.Issue import Issue
+from github.PullRequest import PullRequest
+from github.RateLimit import RateLimit
+from github.Repository import Repository
+from github.Requester import Requester
+
+from onyx.connectors.exceptions import ConnectorValidationError
+from onyx.connectors.exceptions import CredentialExpiredError
+from onyx.connectors.exceptions import InsufficientPermissionsError
+from onyx.connectors.github.connector import GithubConnector
+from onyx.connectors.github.connector import SerializedRepository
+from onyx.connectors.models import Document
+from tests.unit.onyx.connectors.utils import load_everything_from_checkpoint_connector
+
+
+@pytest.fixture
+def repo_owner() -> str:
+    return "test-org"
+
+
+@pytest.fixture
+def repositories() -> str:
+    return "test-repo"
+
+
+@pytest.fixture
+def mock_github_client() -> MagicMock:
+    """Create a mock GitHub client with proper typing"""
+    mock = MagicMock(spec=Github)
+    # Add proper return typing for get_repo method
+    mock.get_repo = MagicMock(return_value=MagicMock(spec=Repository))
+    # Add proper return typing for get_organization method
+    mock.get_organization = MagicMock()
+    # Add proper return typing for get_user method
+    mock.get_user = MagicMock()
+    # Add proper return typing for get_rate_limit method
+    mock.get_rate_limit = MagicMock(return_value=MagicMock(spec=RateLimit))
+    # Add requester for repository deserialization
+    mock.requester = MagicMock(spec=Requester)
+    return mock
+
+
+@pytest.fixture
+def github_connector(
+    repo_owner: str, repositories: str, mock_github_client: MagicMock
+) -> Generator[GithubConnector, None, None]:
+    connector = GithubConnector(
+        repo_owner=repo_owner,
+        repositories=repositories,
+        include_prs=True,
+        include_issues=True,
+    )
+    connector.github_client = mock_github_client
+    yield connector
+
+
+@pytest.fixture
+def create_mock_pr() -> Callable[..., MagicMock]:
+    def _create_mock_pr(
+        number: int = 1,
+        title: str = "Test PR",
+        body: str = "Test Description",
+        state: str = "open",
+        merged: bool = False,
+        updated_at: datetime = datetime(2023, 1, 1, tzinfo=timezone.utc),
+    ) -> MagicMock:
+        """Helper to create a mock PullRequest object"""
+        mock_pr = MagicMock(spec=PullRequest)
+        mock_pr.number = number
+        mock_pr.title = title
+        mock_pr.body = body
+        mock_pr.state = state
+        mock_pr.merged = merged
+        mock_pr.updated_at = updated_at
+        mock_pr.html_url = f"https://github.com/test-org/test-repo/pull/{number}"
+        return mock_pr
+
+    return _create_mock_pr
+
+
+@pytest.fixture
+def create_mock_issue() -> Callable[..., MagicMock]:
+    def _create_mock_issue(
+        number: int = 1,
+        title: str = "Test Issue",
+        body: str = "Test Description",
+        state: str = "open",
+        updated_at: datetime = datetime(2023, 1, 1, tzinfo=timezone.utc),
+    ) -> MagicMock:
+        """Helper to create a mock Issue object"""
+        mock_issue = MagicMock(spec=Issue)
+        mock_issue.number = number
+        mock_issue.title = title
+        mock_issue.body = body
+        mock_issue.state = state
+        mock_issue.updated_at = updated_at
+        mock_issue.html_url = f"https://github.com/test-org/test-repo/issues/{number}"
+        mock_issue.pull_request = None  # Not a PR
+        return mock_issue
+
+    return _create_mock_issue
+
+
+@pytest.fixture
+def create_mock_repo() -> Callable[..., MagicMock]:
+    def _create_mock_repo(
+        name: str = "test-repo",
+        id: int = 1,
+    ) -> MagicMock:
+        """Helper to create a mock Repository object"""
+        mock_repo = MagicMock(spec=Repository)
+        mock_repo.name = name
+        mock_repo.id = id
+        mock_repo.raw_headers = {"status": "200 OK", "content-type": "application/json"}
+        mock_repo.raw_data = {
+            "id": str(id),
+            "name": name,
+            "full_name": f"test-org/{name}",
+            "private": str(False),
+            "description": "Test repository",
+        }
+        return mock_repo
+
+    return _create_mock_repo
+
+
+def test_load_from_checkpoint_happy_path(
+    github_connector: GithubConnector,
+    mock_github_client: MagicMock,
+    create_mock_repo: Callable[..., MagicMock],
+    create_mock_pr: Callable[..., MagicMock],
+    create_mock_issue: Callable[..., MagicMock],
+) -> None:
+    """Test loading from checkpoint - happy path"""
+    # Set up mocked repo
+    mock_repo = create_mock_repo()
+    github_connector.github_client = mock_github_client
+    mock_github_client.get_repo.return_value = mock_repo
+
+    # Set up mocked PRs and issues
+    mock_pr1 = create_mock_pr(number=1, title="PR 1")
+    mock_pr2 = create_mock_pr(number=2, title="PR 2")
+    mock_issue1 = create_mock_issue(number=1, title="Issue 1")
+    mock_issue2 = create_mock_issue(number=2, title="Issue 2")
+
+    # Mock get_pulls and get_issues methods
+    mock_repo.get_pulls.return_value = MagicMock()
+    mock_repo.get_pulls.return_value.get_page.side_effect = [
+        [mock_pr1, mock_pr2],
+        [],
+    ]
+    mock_repo.get_issues.return_value = MagicMock()
+    mock_repo.get_issues.return_value.get_page.side_effect = [
+        [mock_issue1, mock_issue2],
+        [],
+    ]
+
+    # Mock SerializedRepository.to_Repository to return our mock repo
+    with patch.object(SerializedRepository, "to_Repository", return_value=mock_repo):
+        # Call load_from_checkpoint
+        end_time = time.time()
+        outputs = load_everything_from_checkpoint_connector(
+            github_connector, 0, end_time
+        )
+
+        # Check that we got all documents and final has_more=False
+        assert len(outputs) == 4
+
+        repo_batch = outputs[0]
+        assert len(repo_batch.items) == 0
+        assert repo_batch.next_checkpoint.has_more is True
+
+        # Check first batch (PRs)
+        first_batch = outputs[1]
+        assert len(first_batch.items) == 2
+        assert isinstance(first_batch.items[0], Document)
+        assert first_batch.items[0].id == "https://github.com/test-org/test-repo/pull/1"
+        assert isinstance(first_batch.items[1], Document)
+        assert first_batch.items[1].id == "https://github.com/test-org/test-repo/pull/2"
+        assert first_batch.next_checkpoint.curr_page == 1
+
+        # Check second batch (Issues)
+        second_batch = outputs[2]
+        assert len(second_batch.items) == 2
+        assert isinstance(second_batch.items[0], Document)
+        assert (
+            second_batch.items[0].id == "https://github.com/test-org/test-repo/issues/1"
+        )
+        assert isinstance(second_batch.items[1], Document)
+        assert (
+            second_batch.items[1].id == "https://github.com/test-org/test-repo/issues/2"
+        )
+        assert second_batch.next_checkpoint.has_more
+
+        # Check third batch (finished checkpoint)
+        third_batch = outputs[3]
+        assert len(third_batch.items) == 0
+        assert third_batch.next_checkpoint.has_more is False
+
+
+def test_load_from_checkpoint_with_rate_limit(
+    github_connector: GithubConnector,
+    mock_github_client: MagicMock,
+    create_mock_repo: Callable[..., MagicMock],
+    create_mock_pr: Callable[..., MagicMock],
+) -> None:
+    """Test loading from checkpoint with rate limit handling"""
+    # Set up mocked repo
+    mock_repo = create_mock_repo()
+    github_connector.github_client = mock_github_client
+    mock_github_client.get_repo.return_value = mock_repo
+
+    # Set up mocked PR
+    mock_pr = create_mock_pr()
+
+    # Mock get_pulls to raise RateLimitExceededException on first call
+    mock_repo.get_pulls.return_value = MagicMock()
+    mock_repo.get_pulls.return_value.get_page.side_effect = [
+        RateLimitExceededException(403, {"message": "Rate limit exceeded"}, {}),
+        [mock_pr],
+        [],
+    ]
+
+    # Mock rate limit reset time
+    mock_rate_limit = MagicMock(spec=RateLimit)
+    mock_rate_limit.core.reset = datetime.now(timezone.utc)
+    github_connector.github_client.get_rate_limit.return_value = mock_rate_limit
+
+    # Mock SerializedRepository.to_Repository to return our mock repo
+    with patch.object(SerializedRepository, "to_Repository", return_value=mock_repo):
+        # Call load_from_checkpoint
+        end_time = time.time()
+        with patch(
+            "onyx.connectors.github.connector._sleep_after_rate_limit_exception"
+        ) as mock_sleep:
+            outputs = load_everything_from_checkpoint_connector(
+                github_connector, 0, end_time
+            )
+
+            assert mock_sleep.call_count == 1
+
+        # Check that we got the document after rate limit was handled
+        assert len(outputs) >= 2
+        assert len(outputs[1].items) == 1
+        assert isinstance(outputs[1].items[0], Document)
+        assert outputs[1].items[0].id == "https://github.com/test-org/test-repo/pull/1"
+
+        assert outputs[-1].next_checkpoint.has_more is False
+
+
+def test_load_from_checkpoint_with_empty_repo(
+    github_connector: GithubConnector,
+    mock_github_client: MagicMock,
+    create_mock_repo: Callable[..., MagicMock],
+) -> None:
+    """Test loading from checkpoint with an empty repository"""
+    # Set up mocked repo
+    mock_repo = create_mock_repo()
+    github_connector.github_client = mock_github_client
+    mock_github_client.get_repo.return_value = mock_repo
+
+    # Mock get_pulls and get_issues to return empty lists
+    mock_repo.get_pulls.return_value = MagicMock()
+    mock_repo.get_pulls.return_value.get_page.return_value = []
+    mock_repo.get_issues.return_value = MagicMock()
+    mock_repo.get_issues.return_value.get_page.return_value = []
+
+    # Mock SerializedRepository.to_Repository to return our mock repo
+    with patch.object(SerializedRepository, "to_Repository", return_value=mock_repo):
+        # Call load_from_checkpoint
+        end_time = time.time()
+        outputs = load_everything_from_checkpoint_connector(
+            github_connector, 0, end_time
+        )
+
+        # Check that we got no documents
+        assert len(outputs) == 2
+        assert len(outputs[-1].items) == 0
+        assert not outputs[-1].next_checkpoint.has_more
+
+
+def test_load_from_checkpoint_with_prs_only(
+    github_connector: GithubConnector,
+    mock_github_client: MagicMock,
+    create_mock_repo: Callable[..., MagicMock],
+    create_mock_pr: Callable[..., MagicMock],
+) -> None:
+    """Test loading from checkpoint with only PRs enabled"""
+    # Configure connector to only include PRs
+    github_connector.include_prs = True
+    github_connector.include_issues = False
+
+    # Set up mocked repo
+    mock_repo = create_mock_repo()
+    github_connector.github_client = mock_github_client
+    mock_github_client.get_repo.return_value = mock_repo
+
+    # Set up mocked PRs
+    mock_pr1 = create_mock_pr(number=1, title="PR 1")
+    mock_pr2 = create_mock_pr(number=2, title="PR 2")
+
+    # Mock get_pulls method
+    mock_repo.get_pulls.return_value = MagicMock()
+    mock_repo.get_pulls.return_value.get_page.side_effect = [
+        [mock_pr1, mock_pr2],
+        [],
+    ]
+
+    # Mock SerializedRepository.to_Repository to return our mock repo
+    with patch.object(SerializedRepository, "to_Repository", return_value=mock_repo):
+        # Call load_from_checkpoint
+        end_time = time.time()
+        outputs = load_everything_from_checkpoint_connector(
+            github_connector, 0, end_time
+        )
+
+        # Check that we only got PRs
+        assert len(outputs) >= 2
+        assert len(outputs[1].items) == 2
+        assert all(
+            isinstance(doc, Document) and "pull" in doc.id for doc in outputs[0].items
+        )  # All documents should be PRs
+
+        assert outputs[-1].next_checkpoint.has_more is False
+
+
+def test_load_from_checkpoint_with_issues_only(
+    github_connector: GithubConnector,
+    mock_github_client: MagicMock,
+    create_mock_repo: Callable[..., MagicMock],
+    create_mock_issue: Callable[..., MagicMock],
+) -> None:
+    """Test loading from checkpoint with only issues enabled"""
+    # Configure connector to only include issues
+    github_connector.include_prs = False
+    github_connector.include_issues = True
+
+    # Set up mocked repo
+    mock_repo = create_mock_repo()
+    github_connector.github_client = mock_github_client
+    mock_github_client.get_repo.return_value = mock_repo
+
+    # Set up mocked issues
+    mock_issue1 = create_mock_issue(number=1, title="Issue 1")
+    mock_issue2 = create_mock_issue(number=2, title="Issue 2")
+
+    # Mock get_issues method
+    mock_repo.get_issues.return_value = MagicMock()
+    mock_repo.get_issues.return_value.get_page.side_effect = [
+        [mock_issue1, mock_issue2],
+        [],
+    ]
+
+    # Mock SerializedRepository.to_Repository to return our mock repo
+    with patch.object(SerializedRepository, "to_Repository", return_value=mock_repo):
+        # Call load_from_checkpoint
+        end_time = time.time()
+        outputs = load_everything_from_checkpoint_connector(
+            github_connector, 0, end_time
+        )
+
+        # Check that we only got issues
+        assert len(outputs) >= 2
+        assert len(outputs[1].items) == 2
+        assert all(
+            isinstance(doc, Document) and "issues" in doc.id for doc in outputs[0].items
+        )  # All documents should be issues
+        assert outputs[1].next_checkpoint.has_more
+
+        assert outputs[-1].next_checkpoint.has_more is False
+
+
+@pytest.mark.parametrize(
+    "status_code,expected_exception,expected_message",
+    [
+        (
+            401,
+            CredentialExpiredError,
+            "GitHub credential appears to be invalid or expired",
+        ),
+        (
+            403,
+            InsufficientPermissionsError,
+            "Your GitHub token does not have sufficient permissions",
+        ),
+        (
+            404,
+            ConnectorValidationError,
+            "GitHub repository not found",
+        ),
+    ],
+)
+def test_validate_connector_settings_errors(
+    github_connector: GithubConnector,
+    status_code: int,
+    expected_exception: type[Exception],
+    expected_message: str,
+) -> None:
+    """Test validation with various error scenarios"""
+    error = GithubException(status=status_code, data={}, headers={})
+
+    github_client = cast(Github, github_connector.github_client)
+    get_repo_mock = cast(MagicMock, github_client.get_repo)
+    get_repo_mock.side_effect = error
+
+    with pytest.raises(expected_exception) as excinfo:
+        github_connector.validate_connector_settings()
+    assert expected_message in str(excinfo.value)
+
+
+def test_validate_connector_settings_success(
+    github_connector: GithubConnector,
+    mock_github_client: MagicMock,
+    create_mock_repo: Callable[..., MagicMock],
+) -> None:
+    """Test successful validation"""
+    # Set up mocked repo
+    mock_repo = create_mock_repo()
+    github_connector.github_client = mock_github_client
+    mock_github_client.get_repo.return_value = mock_repo
+
+    # Mock get_contents to simulate successful access
+    mock_repo.get_contents.return_value = MagicMock()
+
+    github_connector.validate_connector_settings()
+    github_connector.github_client.get_repo.assert_called_once_with(
+        f"{github_connector.repo_owner}/{github_connector.repositories}"
+    )