Opening a deleted Item loads indefinitely #2822

[mkrueger]

This pull request improves the reliability and user experience of reading documents in Cosmos DB by adding timeout handling, fallback logic, and clearer error messaging. The changes ensure that if a document read operation fails or times out, a fallback query by _rid is attempted, and users receive a more informative error message in the UI when a document cannot be found or retrieved.

Error Handling and Messaging Improvements:

• Added a new localized error message "Item not found or request timed out" to bundle.l10n.json for clearer user feedback when document retrieval fails.
• Updated the error reporting in DocumentSession.read to send a documentError event with the new message when a document cannot be found or read, instead of sending a generic or query error.

Timeouts and Fallback Logic:

• Implemented a 4-second timeout for both the primary document read and the fallback _rid query in DocumentSession, with appropriate logging and error handling for timeouts. [1] [2] [3]
• Added fallback logic: if the primary read fails or times out, a secondary query by _rid is attempted, and detailed logs are generated based on the results.

UI Improvements:

• Enhanced the document panel UI to display a loading state only when appropriate, and to show a user-friendly error message when a document cannot be loaded, such as when it is deleted externally or a timeout occurs.

Fixes #2822

[Copilot]

@mkrueger I've opened a new pull request, #2858, to work on those changes. Once the pull request is ready, I'll request review from you.

[Copilot]

@mkrueger I've opened a new pull request, #2864, to work on those changes. Once the pull request is ready, I'll request review from you.