♻️ [RUM-9126] Decouple common contexts from rumPublicApi

[amortemousque]

Motivation

"Decouple the common context from rumPublicApi. The common contexts (user, account, global) are currently tied to rumPublicApi to ensure that saving and retrieving context work before initialization.

To prevent any breaking changes, this PR:

• Buffers the context API calls to ensure saving context before initialization works
• Maintains a 'fake' context in the pre-init logic so that DD_RUM.getGlobalContext() also works

(Review per commit)

Changes

• Create dedicated module for account, user and global context.
• Replace common context in rumPublicApi.
• Remove savedCommonContext in collections and assembly

Testing

• [x] Local
• [x] Staging
• [x] Unit
• [ ] End to end

---

I have gone over the contributing documentation.

[codecov-commenter]

Codecov Report

:white_check_mark: All modified and coverable lines are covered by tests. :white_check_mark: Project coverage is 91.94%. Comparing base (654e38a) to head (560a7b2). :warning: Report is 243 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3432      +/-   ##
==========================================
+ Coverage   91.91%   91.94%   +0.02%     
==========================================
  Files         309      312       +3     
  Lines        8105     8122      +17     
  Branches     1838     1837       -1     
==========================================
+ Hits         7450     7468      +18     
+ Misses        655      654       -1     

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[cit-pr-commenter[bot]]

Bundles Sizes Evolution

📦 Bundle Name	Base Size	Local Size	𝚫	𝚫%	Status
Rum	146.96 KiB	147.41 KiB	462 B	+0.31%	✅
Logs	51.38 KiB	51.38 KiB	0 B	0.00%	✅
Rum Slim	106.19 KiB	106.77 KiB	600 B	+0.55%	✅
Worker	23.59 KiB	23.59 KiB	0 B	0.00%	✅

🚀 CPU Performance

Action Name	Base Average Cpu Time (ms)	Local Average Cpu Time (ms)	𝚫
addglobalcontext	0.003	0.003	-0.000
addaction	0.038	0.037	-0.001
addtiming	0.001	0.001	-0.000
adderror	0.041	0.041	0.000
startstopsessionreplayrecording	0.009	0.017	0.009
startview	0.421	0.398	-0.022
logmessage	0.021	0.024	0.003

🧠 Memory Performance

Action Name	Base Consumption Memory (bytes)	Local Consumption Memory (bytes)	𝚫 (bytes)
addglobalcontext	27.69 KiB	28.45 KiB	777 B
addaction	54.53 KiB	52.64 KiB	-1928 B
addtiming	26.25 KiB	25.99 KiB	-260 B
adderror	58.81 KiB	57.70 KiB	-1130 B
startstopsessionreplayrecording	25.45 KiB	24.76 KiB	-703 B
startview	425.99 KiB	424.28 KiB	-1748 B
logmessage	54.87 KiB	59.56 KiB	4.69 KiB

🔗 RealWorld

[amortemousque]

/to-staging

[dd-devflow[bot]]

View all feedbacks in Devflow UI. 2025-04-01 09:12:49 UTC :information_source: Start processing command /to-staging

---

2025-04-01 09:12:57 UTC :information_source: Branch Integration: starting soon, merge expected in approximately 15m44s (p90)

Commit 560a7b27e9 will soon be integrated into staging-14.

---

2025-04-01 09:25:43 UTC :information_source: Branch Integration: This commit was successfully integrated

Commit 560a7b27e9 has been merged into staging-14 in merge commit d00f3501f7.

Check out the triggered pipeline on Gitlab :fox_face:

If you need to revert this integration, you can use the following command: /code revert-integration -b staging-14