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Fix add-on store repository getting removed without internet #5717

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@agners agners commented Mar 3, 2025

Proposed change

Currently, when a git command error happens in pull(), we declare the repository as corrupt. Subsequent system autofix runs then execute the reset resolution, which essentially removes the git repository from the system.

In situations where the Internet fails right between the last Supervisor connectivity check and the add-on store repository update (the connectivity checks are throttled to once every 10 minutes while connectivity is considered good), or if the outage is only partial (e.g. reaching connectivity check works but the store repository is not reachable), this leads to a git command error which declares the repository as corrupt just as well, and ultimately leads to the removal of the add-on store repository from the local system.

Handle the git fetch errors separately. This prevents add-on store repository from being declared corrupted just because the repository is not reachable.

Fixes: #5668

Type of change

  • Dependency upgrade
  • Bugfix (non-breaking change which fixes an issue)
  • New feature (which adds functionality to the supervisor)
  • Breaking change (fix/feature causing existing functionality to break)
  • Code quality improvements to existing code or addition of tests

Additional information

  • This PR fixes or closes issue: fixes #
  • This PR is related to issue:
  • Link to documentation pull request:
  • Link to cli pull request:
  • Link to client library pull request:

Checklist

  • The code change is tested and works locally.
  • Local tests pass. Your PR cannot be merged unless tests pass
  • There is no commented out code in this PR.
  • I have followed the development checklist
  • The code has been formatted using Ruff (ruff format supervisor tests)
  • Tests have been added to verify that the new code works.

If API endpoints or add-on configuration are added/changed:

Summary by CodeRabbit

  • Bug Fixes
    • Enhanced the update process by refining error handling and messaging, ensuring a more stable synchronization experience when issues occur.

Currently, when a git command error happens in `pull()`, we declare
the repository as corrupt. Subsequent system autofix runs then execute
the reset resolution, which essentially removes the git repository from
the system.

In situations where the Internet fails right between the last
Supervisor connectivity check and the add-on store repository update
(the connectivity checks are throttled to once every 10 minutes while
connectivity is considered good), or if the outage is only partial
(e.g. reaching connectivity check works but the store repository is not
reachable), this leads to a git command error which declares the
repository as corrupt just as well, and ultimately leads to the removal
of the add-on store repository from the local system.

Handle the git fetch errors separately. This prevents add-on store
repository from being declared corrupted just because the repository
is not reachable.
@agners agners added the bugfix A bug fix label Mar 3, 2025
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coderabbitai bot commented Mar 3, 2025

📝 Walkthrough

Walkthrough

The pull method in the GitRepo class was modified to improve its robustness. An additional error handling block was introduced to catch git.CommandError exceptions during the fetch operation. If an error occurs, a warning is logged and a StoreGitError is raised. Additionally, the branch assignment is now performed within a try block after the fetch operation to manage potential issues with accessing the active branch.

Changes

File Path Change Summary
supervisor/store/git.py Modified the pull method to add a new except block for git.CommandError that logs a warning and raises StoreGitError. Moved the branch assignment into a try block after the fetch operation.

Sequence Diagram(s)

sequenceDiagram
    participant Caller
    participant GitRepo
    participant Remote

    Caller ->> GitRepo: call pull()
    GitRepo ->> Remote: perform fetch operation
    alt Fetch fails (git.CommandError)
        GitRepo -->> GitRepo: log warning
        GitRepo -->> Caller: raise StoreGitError
    else Fetch succeeds
        GitRepo ->> GitRepo: assign branch variable within try block
        GitRepo -->> Caller: return success response
    end
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Actionable comments posted: 0

🔭 Outside diff range comments (1)
supervisor/store/git.py (1)

121-129: 🛠️ Refactor suggestion

Return value consistency issue in early returns.

The pull() method returns a boolean value indicating whether the repository changed, but the early return statements (when the lock is already acquired or the repo is None) don't return any value. This could lead to None being returned instead of a boolean.

Fix this by ensuring consistent return values:

        if self.lock.locked():
            _LOGGER.warning("There is already a task in progress")
-            return
+            return False
        if self.repo is None:
            _LOGGER.warning("No valid repository for %s", self.url)
-            return
+            return False
🧹 Nitpick comments (2)
supervisor/store/git.py (2)

141-143: Improved error handling for git fetch operations.

This change correctly distinguishes between connectivity errors during fetch operations and actual repository corruption issues. By logging a warning instead of creating a corruption issue, temporary network issues won't trigger unnecessary repository resets.

Consider enhancing the error message to make it clearer that this could be a temporary network issue. For example:

-                _LOGGER.warning("Wasn't able to update %s repo: %s.", self.url, err)
+                _LOGGER.warning("Network/connectivity issue while updating %s repo: %s. Will retry later.", self.url, err)

123-188: Exception hierarchy could be improved.

Both network issues and corruption issues raise the same StoreGitError exception type, making it difficult for callers to distinguish between temporary network issues and actual corruption. Consider creating a more specific exception type for network-related errors.

You could introduce a new exception like StoreNetworkError that extends StoreGitError:

class StoreNetworkError(StoreGitError):
    """Error when network issues prevent Git operations."""

Then update the fetch error handling:

            except git.CommandError as err:
                _LOGGER.warning("Wasn't able to update %s repo: %s.", self.url, err)
-                raise StoreGitError() from err
+                raise StoreNetworkError() from err

This would allow callers to handle network issues differently if needed.

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📥 Commits

Reviewing files that changed from the base of the PR and between a7c6699 and 7dd2867.

📒 Files selected for processing (1)
  • supervisor/store/git.py (1 hunks)
⏰ Context from checks skipped due to timeout of 90000ms (4)
  • GitHub Check: Build armv7 supervisor
  • GitHub Check: Build armhf supervisor
  • GitHub Check: Build aarch64 supervisor
  • GitHub Check: Run tests Python 3.13.2
🔇 Additional comments (2)
supervisor/store/git.py (2)

145-146: Good restructuring of the branch access logic.

Moving the branch access into a separate try block is a smart improvement. This ensures that if the fetch operation fails, the code won't attempt to access the potentially invalid branch, which could lead to further errors.


121-129:

✅ Verification successful

Verify the overall error handling flow.

The changes look good, but let's verify that the implementation properly prevents marking the repository as corrupted when it's just a network issue. The critical improvement is that network errors during fetch now avoid triggering the IssueType.CORRUPT_REPOSITORY resolution, which would have incorrectly marked a repository with network issues as corrupted.

Also applies to: 182-188


🏁 Script executed:

#!/bin/bash
# Verify that network errors during fetch won't create corruption issues

# Look for any other places in the codebase that might create CORRUPT_REPOSITORY issues
echo "Places where CORRUPT_REPOSITORY is created:"
rg "IssueType.CORRUPT_REPOSITORY" --type py -C 2

# Check for any tests of this functionality
echo -e "\nTests related to this functionality:"
rg "test.*pull" --type py

Length of output: 5474


Confirmed: Network errors during fetch are now handled correctly

After reviewing the changes and verifying with our grep outputs and tests, the error handling flow in supervisor/store/git.py (including the related block at lines 182–188) properly distinguishes between genuine repository corruption and transient network errors. The implementation now ensures that if a network issue occurs during the fetch, it does not trigger the IssueType.CORRUPT_REPOSITORY resolution. The grep results indicate that the creation of IssueType.CORRUPT_REPOSITORY is isolated to the intended error paths, and related tests (e.g., in tests/docker/test_interface.py) further confirm the correct behavior.

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No Internet leads to add-on store reset
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