fix: Do not trigger session on meaningless navigation #3608
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Co-authored-by: Abhijeet Prasad <aprasad@sentry.io>
packages/hub/src/session.ts
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| // Otherwise: | ||
| // hub.startSession(); | ||
| // hub.captureSession(); | ||
| // can produce either 0 or 1, depending on the mood | ||
| this.duration = Math.floor(this.timestamp - this.started); |
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https://develop.sentry.dev/sdk/sessions/#session-update-payload documents duration to be a float
What exactly was the problem here? If float is not being ingested correctly then we might need changes elsewhere.
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‘Date.now() - Date.now()’ which is what we have here will always produce int.
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If both are ints, what's the deal with rounding? This doesn't make sense.
If we want to always report zero then Math.floor is not part of the solution.
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New session is initially at 0, but captureSession is passing its own Date.now() as endTimestamp. Its possible that 2 calls followed after each other (as in code comment) will have 2 differents Date.now (by 1ms), which will produce a duration of 1.
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Team talked about this on a call, decided that we:
- Do not send duration for JS Browser sessions.
- Fix duration calculation to report seconds instead of milliseconds and to use the same clock as we use for errors and transactions. See
timestampInSeconds. - For this PR, revert the above changes to
packages/hub/src/session.tsand merge the changes topackages/browser/src/sdk.ts.
We'll fix the reporting of session durations separately later.
rhcarvalho
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rhcarvalho
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Bug found when doing end-to-end tests for the
@sentry/nextjsSDK.