[DOCS-14028] Investigate changes in SERVER-51839: Add error context when document validator with $expr fails by throwing an exception Created: 03/Dec/20 Updated: 13/Nov/23 Resolved: 19/Mar/21 |
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| Status: | Closed |
| Project: | Documentation |
| Component/s: | manual, Server |
| Affects Version/s: | None |
| Fix Version/s: | 4.9.0, Server_Docs_20231030, Server_Docs_20231106, Server_Docs_20231105, Server_Docs_20231113 |
| Type: | Task | Priority: | Major - P3 |
| Reporter: | Backlog - Core Eng Program Management Team | Assignee: | Naomi Pentrel (Inactive) |
| Resolution: | Won't Do | Votes: | 0 |
| Labels: | None | ||
| Remaining Estimate: | Not Specified | ||
| Time Spent: | Not Specified | ||
| Original Estimate: | Not Specified | ||
| Issue Links: |
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| Participants: | |||||||||
| Days since reply: | 2 years, 46 weeks, 5 days ago | ||||||||
| Epic Link: | DOCSP-9747 | ||||||||
| Story Points: | 2 | ||||||||
| Description |
DescriptionDownstream Change Summary Document validators which use $expr will now generate detailed errors Description of Linked TicketThe evaluation of an $expr can throw query-fatal exceptions in a variety of conditions, with one classic example being division by zero. When this happens during the evaluation of a collection validator, the insert or update operation will be rejected by the validator. For example, let's suppose that we create a collection validator that always divides by zero:
The insert is rejected when the system runs the validator to ensure that the write is valid, and the validator itself fails. Note, however, that the error message doesn't indicate that the problem occurred when checking the document validator. We should add context to the error message so that it says something like "Document validation failed :: caused by :: can't $divide by zero". As an implementation note, we have a convenient method for adding context to an exception before rethrowing it. Scope of changesThis might just be a release notes update (heading like Improved $expr Error Handling). But we should review the $expr docs to see if there's anything we need to tweak. Impact to Other DocsMVP (Work and Date)Resources (Scope or Design Docs, Invision, etc.) |
| Comments |
| Comment by Naomi Pentrel (Inactive) [ 19/Mar/21 ] |
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This will be covered in the changelog. No other changes are required. |