chore: add index for the files attribute on the messages collection

[pierre-lehnen-rc]

Proposed changes (including videos or screenshots)

Issue(s)

CORE-1623

Steps to test or reproduce

Further comments

Summary by CodeRabbit

• Chores
  • Enhanced database query performance through backend optimizations for message-related operations.

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Looks like this PR is ready to merge! 🎉
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⚠️ No Changeset found

Latest commit: 04f0419

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[coderabbitai]

Walkthrough

A sparse index on the nested files._id field was added to the MessagesRaw model to enable efficient queries on file references within messages, addressing misalignment between the model's indexes and current file storage patterns.

Changes

Cohort / File(s)	Summary
Database Indexing packages/models/src/models/Messages.ts	Added sparse index definition on nested field files._id to support queries involving files within messages

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Poem

🐰 A rabbit hops through indexed lands,
Where files now rest in eager hands,
With files._id spun so tight,
Messages query swift and bright! ✨

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly describes the main change: adding an index for the files attribute on the messages collection, which aligns with the primary modification in the changeset.
Linked Issues check	✅ Passed	The PR successfully addresses CORE-1623 by adding a sparse index on the nested field 'files._id' to the MessagesRaw model, directly implementing the required index adjustment for message file queries.
Out of Scope Changes check	✅ Passed	The PR contains only the targeted index addition for the files attribute on the messages collection, with no extraneous changes detected outside the stated objective.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing touches

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• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch chore/multi-file-message-index

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📥 Commits

Reviewing files that changed from the base of the PR and between e639382 and 27404ca.

📒 Files selected for processing (1)

• packages/models/src/models/Messages.ts

🧰 Additional context used

📓 Path-based instructions (1)

**/*.{ts,tsx,js}

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Files:

• packages/models/src/models/Messages.ts

⏰ Context from checks skipped due to timeout of 90000ms. You can increase the timeout in your CodeRabbit configuration to a maximum of 15 minutes (900000ms). (3)

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🔇 Additional comments (1)

packages/models/src/models/Messages.ts (1)

57-57: Index addition is correct and actively used in the codebase.

The sparse multikey index on files._id is properly structured and aligns with the PR objective to support the new file storage pattern. The sparse option is appropriate since not all messages contain files. Queries utilizing this index exist in apps/meteor/app/file-upload/server/lib/FileUpload.ts, where the field is used both for filtering (files._id: { $exists: true }) and projection.

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[cubic-dev-ai]

No issues found across 1 file

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 70.66%. Comparing base (228499e) to head (04f0419).
⚠️ Report is 1 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop   #38087      +/-   ##
===========================================
- Coverage    70.69%   70.66%   -0.03%     
===========================================
  Files         3148     3148              
  Lines       108850   108850              
  Branches     19595    19594       -1     
===========================================
- Hits         76947    76916      -31     
- Misses       29899    29931      +32     
+ Partials      2004     2003       -1     

Flag	Coverage Δ
e2e	60.20% <ø> (+<0.01%)	⬆️
e2e-api	48.40% <ø> (+1.10%)	⬆️
unit	71.75% <ø> (-0.09%)	⬇️

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[github-actions]

📦 Docker Image Size Report

➡️ Changes

Service	Current	Baseline	Change	Percent
sum of all images	0B	0B	0B
account-service	0B	0B	0B
authorization-service	0B	0B	0B
ddp-streamer-service	0B	0B	0B
omnichannel-transcript-service	0B	0B	0B
presence-service	0B	0B	0B
queue-worker-service	0B	0B	0B
rocketchat	0B	0B	0B

📊 Historical Trend

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  title "Image Size Evolution by Service (Last 30 Days + This PR)"
  x-axis ["11/18 22:53", "11/19 23:02", "11/21 16:49", "11/24 17:34", "11/27 22:32", "11/28 19:05", "12/01 23:01", "12/02 21:57", "12/03 21:00", "12/04 18:17", "12/05 21:56", "12/08 20:15", "12/09 22:17", "12/10 23:26", "12/11 21:56", "12/12 22:45", "12/13 01:34", "12/15 22:31", "12/16 22:18", "12/17 21:04", "12/18 23:12", "12/19 23:27", "12/20 21:03", "12/22 18:54", "12/23 16:16", "12/24 19:38", "12/25 17:51", "12/26 13:18", "12/29 19:01", "12/30 20:52", "01/13 01:07 (PR)"]
  y-axis "Size (GB)" 0 --> 0.5
  line "account-service" [0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.00]
  line "authorization-service" [0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.00]
  line "ddp-streamer-service" [0.12, 0.12, 0.12, 0.12, 0.12, 0.12, 0.12, 0.12, 0.12, 0.12, 0.12, 0.12, 0.12, 0.12, 0.12, 0.12, 0.12, 0.12, 0.12, 0.12, 0.12, 0.12, 0.12, 0.12, 0.12, 0.12, 0.12, 0.12, 0.12, 0.12, 0.00]
  line "omnichannel-transcript-service" [0.14, 0.14, 0.13, 0.13, 0.13, 0.13, 0.13, 0.13, 0.13, 0.13, 0.13, 0.13, 0.13, 0.13, 0.13, 0.13, 0.13, 0.13, 0.13, 0.13, 0.13, 0.13, 0.13, 0.13, 0.13, 0.13, 0.13, 0.13, 0.13, 0.13, 0.00]
  line "presence-service" [0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.11, 0.00]
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Loading

Statistics (last 30 days):

• 📊 Average: 1.5GiB
• ⬇️ Minimum: 1.4GiB
• ⬆️ Maximum: 1.6GiB
• 🎯 Current PR: 0B

ℹ️ About this report

This report compares Docker image sizes from this build against the develop baseline.

• Tag: pr-38087
• Baseline: develop
• Timestamp: 2026-01-13 01:07:43 UTC
• Historical data points: 30

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Updated: Tue, 13 Jan 2026 01:07:44 GMT