Summary:
Added demo to show how DataSource can power charts using event sampling and smart windowing.
A more experimental application: use dataSource to power some charts, that leverages the events emitted from an datasource that is continuously being appended:
- incoming events are downsampled 1 in 100 to build up the bottom window
- incoming events are not downsampled to render the topwindow, but since datasource views will ignore events outside the window, things will stay pretty responsive when a window is selected (without a window, the downsampled dataset is used as source for top chart as well).
Compared to a naive (well still slightly optimised with useFastArray) implementation that throws all incoming event in a big array, it performs > 20 times faster (see difference in amount of events processed)
Reviewed By: passy
Differential Revision: D28474409
fbshipit-source-id: 6a7973d1ade3053b1d6c8f72069697d96b1ef4fd
Summary:
Changelog: [Logs] Fix regression causing the scrollbars to be hidden. This diff fixes a regression where the Logs plugin was no longer scrollable (and scrolls indefinitely, killing perf).
As reported in https://fb.workplace.com/groups/flippersupport/permalink/1133775743769749/
The cause of the problem is the swap between the `PluginContainer` and `outOfContentsContainer`.
The deeper root that caused in the first place, is that containers use a `flex: 1` layout, which gets interpreted as `flex: 1 1 0%` (grow, shrink, 0% by default), where it was always inteded to be `flex: 1 1 0` (grow, shrink, by default zero pixels). In practice that difference usually doesn't matter. But sometimes it does... See https://stackoverflow.com/a/42630660/1983583
My whole life has been a lie up to this point.
Will trigger a new release after landing this.
Reviewed By: nikoant
Differential Revision: D28422966
fbshipit-source-id: 3ebd5f8ae76e032c5d698154b021df8ebef2c757
Summary:
Added a microbundle based build setup to the data-source folder to be able to package just that folder.
For simplicity / iteration speed, this is only used to publish externally. Our own code still references the source files directly.
More strict separation can be done later if there is external adoption.
Reviewed By: nikoant
Differential Revision: D28056699
fbshipit-source-id: a011b615cfffeff8ecb879bd7281a71085cea965
Summary:
To make the DataSource abstraction reusable for other teams and an upcoming talk, this diff moves all DataSource storage & virtualization logic in one folder.
Will set up a build process and demo project in later diffs.
Reviewed By: nikoant
Differential Revision: D28056700
fbshipit-source-id: 7cfe5b40bbbe387da711f765a604a45029d451c7
