🐛 Fix missing URL context

[amortemousque]

Motivation

When assembling an event for a given timestamp, the view context is found, but the URL context is missing. (cf telemetry PR)

const viewHistoryEntry =  viewHistory.findView(startTime) // get an entry
const urlContext = urlContexts.findUrl(startTime) // get undefined

This happens because both viewHistory and urlContexts rely on createValueHistory, which clears old entries via setInterval. So, the clean-up task of the URL context occurs before the view context.

What happens	What we expect
urlContexts cleanup task runs first. Event is assembled, but URL context is missing. viewHistory cleanup task runs.	Event is assembled after both contexts are cleaned. urlContexts cleanup task runs viewHistory cleanup task runs

Changes

• Update the createValueHistory so that all valueHistory instances clear old entries in the same synchronous task

Testing

• Local
• Staging
• Unit
• End to end

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I have gone over the contributing documentation.

[sethfowler-datadog]

Nice; maintaining a "transactional" model for value histories makes things a lot easier to reason about!

[amortemousque]

/to-staging

[dd-devflow]

Devflow running: /to-staging

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2025-02-05 17:05:50 UTC ℹ️ Branch Integration: starting soon, median merge time is 11m20s

Commit 9844f88fbe will soon be integrated into staging-06.

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2025-02-05 17:17:41 UTC ℹ️ Branch Integration: This commit was successfully integrated

Commit 9844f88fbe has been merged into staging-06 in merge commit a27107c852.

Check out the triggered pipeline on Gitlab 🦊

If you need to revert this integration, you can use the following command: /code revert-integration -b staging-06