error handling middleware to catch parsing errors more gracefully. #3628
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📝 WalkthroughWalkthroughThe changes in this pull request enhance the error handling capabilities of the Express application by introducing a specific case for Changes
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Codecov ReportAll modified and coverable lines are covered by tests ✅
Additional details and impacted files@@ Coverage Diff @@
## staging #3628 +/- ##
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- Coverage 27.05% 27.01% -0.04%
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Files 146 146
Lines 21337 21368 +31
Branches 273 287 +14
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- Misses 15565 15596 +31 |
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🧹 Outside diff range and nitpick comments (2)
src/device-registry/bin/server.js (2)
86-91: Excellent addition of SyntaxError handling!The new error handling for SyntaxError is a valuable improvement to the middleware. It provides a clear and consistent response for JSON parsing errors, which enhances the overall robustness of the API.
A minor suggestion to consider:
Consider adding a more descriptive error message to help clients identify the issue more precisely. For example:
} else if (err instanceof SyntaxError) { res.status(400).json({ success: false, - message: "Invalid JSON", + message: "Invalid JSON: Unable to parse the request body", errors: { message: "Invalid JSON" }, });This change would provide more context about the nature of the error, potentially aiding in quicker problem resolution for API consumers.
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65-150: Well-structured and comprehensive error handling!The error handling middleware is thoughtfully designed, covering a wide range of scenarios and providing appropriate responses for different error types. The use of instanceof for specific error types and the consistent response structure are commendable.
A suggestion for further improvement:
Consider refactoring the error handling logic to use a switch statement or a map of status codes to handler functions. This could make the code more maintainable and easier to extend in the future. For example:
const errorHandlers = { success: false, message: "Bad request error", errors: { message: err.message }, }), success: false, message: "Unauthorized", errors: { message: err.message }, }), // ... other status codes ... }; app.use(function(err, req, res, next) { if (res.headersSent) { return logger.info(`🍻🍻 HTTP response already sent to the client -- ${stringify(err)}`); } if (err instanceof HttpError) { return res.status(err.statusCode).json({ success: false, message: err.message, errors: err.errors, }); } if (err instanceof SyntaxError) { return res.status(400).json({ success: false, message: "Invalid JSON: Unable to parse the request body", errors: { message: "Invalid JSON" }, }); } const status = err.status || 500; const handler = errorHandlers[status] || errorHandlers[500]; const response = handler(err); logger.error(`${response.message} --- ${stringify(err)}`); if (status === 500) { logger.error(`Stack Trace: ${err.stack}`); } res.status(status).json(response); });This refactoring would make it easier to add new error types or modify existing ones without changing the overall structure of the middleware.
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- src/device-registry/bin/server.js (1 hunks)
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🔇 Additional comments (1)
src/device-registry/bin/server.js (1)
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1-224: Summary: Excellent enhancement to error handling middlewareThe changes introduced in this pull request significantly improve the robustness of the error handling middleware, particularly for JSON parsing errors. The addition of specific handling for SyntaxError is a valuable improvement that will enhance the API's ability to provide clear and helpful responses to clients.
Key points:
- The new SyntaxError handling is well-implemented and correctly placed within the existing error handling structure.
- The overall error handling middleware is comprehensive, covering various scenarios and providing appropriate responses.
- The use of logging throughout the error handling process is commendable and will aid in debugging and monitoring.
Suggestions for further improvement:
- Consider adding more descriptive error messages to help API consumers quickly identify and resolve issues.
- Explore the possibility of refactoring the error handling logic to improve maintainability and extensibility.
Overall, this is a solid improvement to the codebase that will contribute to a more robust and user-friendly API.
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Device registry changes in this PR available for preview here |
Description
error handling middleware to catch parsing errors more gracefully.
Changes Made
Testing
Affected Services
API Documentation Updated?
Additional Notes
error handling middleware to catch parsing errors more gracefully.
Summary by CodeRabbit
New Features
Bug Fixes