Update github_mcp_connector.py #4
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Caution Review failedThe pull request is closed. """ WalkthroughThe GitHub MCP Connector was updated to include a circuit breaker for improved resilience against API failures. A new Changes
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Summary of Changes
Hello @groupthinking, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!
This pull request focuses on improving the robustness and maintainability of the github_mcp_connector.py. It introduces a circuit breaker pattern to enhance resilience against external API failures and refactors the existing API interaction methods for cleaner, more centralized error handling. The accompanying demonstration code has also been updated to reflect these architectural improvements and provide a clearer example of usage.
Highlights
- Enhanced API Resilience with Circuit Breaker: A new
CircuitBreakerclass has been implemented and integrated into theGitHubMCPConnector. This pattern provides resilience against repeated API failures by temporarily blocking calls to a failing service, preventing cascading issues and allowing for graceful recovery. - Streamlined API Interaction Methods: The core GitHub API interaction methods (e.g.,
search_repositories,get_repository,create_issue) have been refactored. They now feature simplified internal error handling and return structures, with theexecute_actionmethod centralizing the primary error catching and circuit breaker logic for all API calls. - Improved Connection and Demo Logic: The
connectmethod now incorporates circuit breaker state management, recording successes and failures. Additionally, thedemonstrate_github_connectorexample has been significantly updated to utilize the newexecute_actionpattern, include basic logging, and provide better validation for the GitHub API token, making the demo more robust and illustrative.
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Pull Request Overview
This pull request updates the GitHub MCP Connector by introducing a circuit breaker for improved resilience and refactoring several API call methods. Key changes include the addition of a new CircuitBreaker class, modifications to how URLs are constructed, and adjustments to error handling in methods that retrieve repositories, issues, pull requests, commits, and user info.
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Code Review
This pull request introduces a circuit breaker pattern for the GitHub MCP Connector to improve resilience. It also refactors action methods for centralized error handling. The review identified a critical bug in the base URL, stubbed context methods, and a too-broad exception handling block. These points should be addressed to ensure the connector is robust and maintainable.
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Actionable comments posted: 4
🧹 Nitpick comments (9)
connectors/github_mcp_connector.py (9)
34-34: Add blank line before class definitionAccording to PEP8, there should be 2 blank lines before a class definition.
Apply this diff:
logger = logging.getLogger(__name__) + class CircuitBreaker:
34-59: Consider thread safety for concurrent operationsThe
CircuitBreakerimplementation doesn't include any synchronization mechanisms. In an async environment with concurrent API calls, this could lead to race conditions when updating_failure_countand_state. Consider usingasyncio.Lockor thread-safe atomic operations for state management.
70-70: Fix inline comment spacingAccording to PEP8, there should be at least two spaces before an inline comment.
Apply this diff:
- self.breaker = CircuitBreaker() # Add the circuit breaker instance + self.breaker = CircuitBreaker() # Add the circuit breaker instance
99-99: Fix inline comment spacingAccording to PEP8, there should be at least two spaces before inline comments.
Apply this diff:
- self.breaker.record_success() # Connection successful, close breaker + self.breaker.record_success() # Connection successful, close breaker return True else: logger.error(f"GitHub API connection failed: {response.status}") - self.breaker.record_failure() # Connection failed, record failure + self.breaker.record_failure() # Connection failed, record failureAlso applies to: 103-103
94-104: Consider removing unnecessary else after returnThe else block after return is unnecessary and can be de-indented to improve readability.
Apply this diff:
async with self.session.get(f"{self.base_url}/user") as response: if response.status == 200: user_data = await response.json() logger.info(f"Connected to GitHub as: {user_data.get('login', 'Unknown')}") self.connected = True await self._update_rate_limit() self.breaker.record_success() # Connection successful, close breaker return True - else: - logger.error(f"GitHub API connection failed: {response.status}") - self.breaker.record_failure() # Connection failed, record failure - return False + logger.error(f"GitHub API connection failed: {response.status}") + self.breaker.record_failure() # Connection failed, record failure + return False
118-127: Implement context methods based on application needsThe
get_contextandsend_contextmethods appear to be placeholders. Consider implementing them to provide meaningful GitHub context for your MCP integration.Would you like me to help implement these methods or open an issue to track this requirement?
154-154: Fix inline comment spacingAccording to PEP8, there should be at least two spaces before an inline comment.
Apply this diff:
- self.breaker.record_success() # Reset breaker on any successful communication + self.breaker.record_success() # Reset breaker on any successful communication
176-180: Consider removing unnecessary else after returnThe else block after return is unnecessary and can be de-indented.
Apply this diff:
async with self.session.get(url, params=params_dict) as response: if response.status == 200: data = await response.json() return {'success': True, 'total_count': data.get('total_count', 0), 'repositories': data.get('items', [])} - else: - return {'success': False, 'error': f"Search failed: {response.status}", 'status_code': response.status} + return {'success': False, 'error': f"Search failed: {response.status}", 'status_code': response.status}
24-24: Remove unused import
Listis imported but never used in the code.Apply this diff:
-from typing import Dict, List, Any, Optional +from typing import Dict, Any, Optional
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connectors/github_mcp_connector.py(3 hunks)
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📓 Path-based instructions (1)
`**/*.py`: Follow PEP8, use 'black' and 'flake8' for code formatting and linting.
**/*.py: Follow PEP8, use 'black' and 'flake8' for code formatting and linting.
📄 Source: CodeRabbit Inference Engine (CONTRIBUTING.md)
List of files the instruction was applied to:
connectors/github_mcp_connector.py
🪛 Ruff (0.11.9)
connectors/github_mcp_connector.py
24-24: typing.List imported but unused
Remove unused import: typing.List
(F401)
🪛 Flake8 (7.2.0)
connectors/github_mcp_connector.py
[error] 24-24: 'typing.List' imported but unused
(F401)
[error] 34-34: expected 2 blank lines, found 1
(E302)
[error] 60-60: expected 2 blank lines, found 1
(E302)
[error] 70-70: at least two spaces before inline comment
(E261)
[error] 99-99: at least two spaces before inline comment
(E261)
[error] 103-103: at least two spaces before inline comment
(E261)
[error] 135-135: indentation is not a multiple of 4
(E111)
[error] 135-135: over-indented
(E117)
[error] 136-136: indentation is not a multiple of 4
(E111)
[error] 154-154: at least two spaces before inline comment
(E261)
🪛 Pylint (3.3.7)
connectors/github_mcp_connector.py
[refactor] 94-104: Unnecessary "else" after "return", remove the "else" and de-indent the code inside it
(R1705)
[refactor] 176-180: Unnecessary "else" after "return", remove the "else" and de-indent the code inside it
(R1705)
[refactor] 188-192: Unnecessary "else" after "return", remove the "else" and de-indent the code inside it
(R1705)
[refactor] 204-208: Unnecessary "else" after "return", remove the "else" and de-indent the code inside it
(R1705)
[refactor] 217-221: Unnecessary "else" after "return", remove the "else" and de-indent the code inside it
(R1705)
[refactor] 230-239: Unnecessary "else" after "return", remove the "else" and de-indent the code inside it
(R1705)
[refactor] 251-255: Unnecessary "else" after "return", remove the "else" and de-indent the code inside it
(R1705)
[refactor] 263-266: Unnecessary "else" after "return", remove the "else" and de-indent the code inside it
(R1705)
[refactor] 281-286: Unnecessary "else" after "return", remove the "else" and de-indent the code inside it
(R1705)
[refactor] 292-296: Unnecessary "else" after "return", remove the "else" and de-indent the code inside it
(R1705)
🔇 Additional comments (1)
connectors/github_mcp_connector.py (1)
310-371: Well-structured demonstration functionThe refactored demonstration function effectively showcases the connector's capabilities with proper error handling and clear output formatting. Good job checking for the GitHub token before proceeding.
Fixed base_url to use proper https:// scheme and removed duplicate protocol in URL construction. 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
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Actionable comments posted: 0
♻️ Duplicate comments (1)
connectors/github_mcp_connector.py (1)
134-137: Fix critical indentation error.The indentation is incorrect and will cause a syntax error. This was flagged in previous reviews but remains unfixed.
- if not self.connected or not self.session or self.session.closed: - logger.error("Action executed while not connected to GitHub API.") - return {"success": False, "error": "Not connected to GitHub API"} + if not self.connected or not self.session or self.session.closed: + logger.error("Action executed while not connected to GitHub API.") + return {"success": False, "error": "Not connected to GitHub API"}
🧹 Nitpick comments (4)
connectors/github_mcp_connector.py (4)
24-24: Remove unused import.The
Listtype from typing is imported but never used in the code.-from typing import Dict, List, Any, Optional +from typing import Dict, Any, Optional
34-34: Add missing blank lines before class definitions.PEP 8 requires two blank lines before top-level class definitions.
+ class CircuitBreaker:+ class GitHubMCPConnector(MCPConnector):Also applies to: 60-60
70-70: Fix comment spacing for PEP 8 compliance.Inline comments should have at least two spaces before the
#symbol.- self.breaker = CircuitBreaker() # Add the circuit breaker instance + self.breaker = CircuitBreaker() # Add the circuit breaker instanceApply similar fixes to lines 99, 103, 108, and 154.
Also applies to: 99-99, 103-103, 108-108, 154-154
176-180: Consider removing unnecessary else clauses after return statements.Pylint suggests removing redundant
elseclauses afterreturnstatements to improve code readability. While not critical, this would align with Python best practices.async with self.session.get(url, params=params_dict) as response: if response.status == 200: data = await response.json() return {'success': True, 'total_count': data.get('total_count', 0), 'repositories': data.get('items', [])} - else: - return {'success': False, 'error': f"Search failed: {response.status}", 'status_code': response.status} + return {'success': False, 'error': f"Search failed: {response.status}", 'status_code': response.status}Also applies to: 188-192, 204-208, 217-221, 230-239, 251-255, 263-266, 281-286, 292-296
📜 Review details
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Review profile: CHILL
Plan: Pro
📒 Files selected for processing (1)
connectors/github_mcp_connector.py(3 hunks)
🧰 Additional context used
🧠 Learnings (1)
connectors/github_mcp_connector.py (1)
Learnt from: groupthinking
PR: groupthinking/self-correcting-executor#11
File: guardian_agent_v2.py:0-0
Timestamp: 2025-07-02T06:13:17.337Z
Learning: The pylint issue counting logic in guardian_agent_v2.py should use a precise regex pattern `^\S+\.py:\d+:\d+: \[[CRWEF]\d{4}` to match only actual pylint output lines and avoid false positives from generic text containing colons and "error" or "warning" keywords.
🪛 Ruff (0.11.9)
connectors/github_mcp_connector.py
24-24: typing.List imported but unused
Remove unused import: typing.List
(F401)
🪛 Flake8 (7.2.0)
connectors/github_mcp_connector.py
[error] 24-24: 'typing.List' imported but unused
(F401)
[error] 34-34: expected 2 blank lines, found 1
(E302)
[error] 60-60: expected 2 blank lines, found 1
(E302)
[error] 70-70: at least two spaces before inline comment
(E261)
[error] 99-99: at least two spaces before inline comment
(E261)
[error] 103-103: at least two spaces before inline comment
(E261)
[error] 135-135: indentation is not a multiple of 4
(E111)
[error] 135-135: over-indented
(E117)
[error] 136-136: indentation is not a multiple of 4
(E111)
[error] 154-154: at least two spaces before inline comment
(E261)
🪛 Pylint (3.3.7)
connectors/github_mcp_connector.py
[refactor] 94-104: Unnecessary "else" after "return", remove the "else" and de-indent the code inside it
(R1705)
[refactor] 176-180: Unnecessary "else" after "return", remove the "else" and de-indent the code inside it
(R1705)
[refactor] 188-192: Unnecessary "else" after "return", remove the "else" and de-indent the code inside it
(R1705)
[refactor] 204-208: Unnecessary "else" after "return", remove the "else" and de-indent the code inside it
(R1705)
[refactor] 217-221: Unnecessary "else" after "return", remove the "else" and de-indent the code inside it
(R1705)
[refactor] 230-239: Unnecessary "else" after "return", remove the "else" and de-indent the code inside it
(R1705)
[refactor] 251-255: Unnecessary "else" after "return", remove the "else" and de-indent the code inside it
(R1705)
[refactor] 263-266: Unnecessary "else" after "return", remove the "else" and de-indent the code inside it
(R1705)
[refactor] 281-286: Unnecessary "else" after "return", remove the "else" and de-indent the code inside it
(R1705)
[refactor] 292-296: Unnecessary "else" after "return", remove the "else" and de-indent the code inside it
(R1705)
🔇 Additional comments (6)
connectors/github_mcp_connector.py (6)
34-58: Circuit breaker implementation looks solid.The CircuitBreaker class correctly implements the circuit breaker pattern with proper state transitions (CLOSED → OPEN → HALF_OPEN → CLOSED). The timeout logic and failure threshold handling are appropriate for resilience against API failures.
128-166: Circuit breaker integration is well-implemented.The execute_action method properly:
- Checks circuit breaker state before executing actions
- Records success/failure appropriately
- Handles network errors distinctly from other exceptions
- Provides meaningful error messages with action context
This significantly improves the connector's resilience against API failures.
167-297: API methods refactoring improves consistency.All API methods now return a unified structure with:
- Consistent success/error handling
- Raw JSON data instead of manual extraction
- Proper error status codes
- Simplified response processing
The refactoring maintains functionality while improving maintainability and debugging capabilities.
284-286: Enhanced error logging for issue creation is valuable.The detailed error logging when GitHub issue creation fails will significantly help with debugging API integration issues. Good improvement for troubleshooting.
315-319: Token validation improves user experience.Adding upfront validation for the GitHub token prevents confusing error messages later in the demo. This is a good UX improvement.
310-371: Demonstration function refactoring enhances clarity.The refactored demo function provides:
- Clear token validation
- Improved error handling and logging
- Better output formatting
- Consistent use of execute_action for all API calls
This makes the demo more robust and educational for users.
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
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