| Commit message (Collapse) | Author | Age |
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This will make it much easier to slot in new event types (login events!).
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The client now takes an initial snapshot from the response to `/api/boot`, then picks up the event stream at the immediately-successive event to the moment the snapshot was taken.
This commit removes the following unused endpoints:
* `/api/channels` (GET)
* `/api/channels/:channel/messages` (GET)
The information therein is now part of the boot response. We can always add 'em back, but I wanted to clear the deck for designing something more capable, for dealing with client needs.
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It is deliberate that the expire() functions do not use them. To avoid races, the transactions must be committed before events get sent, in both cases, which makes them structurally pretty different.
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This separates the code that figures out what happened to an entity from the code that represents it to a user, and makes it easier to compute a snapshot at a point in time (for things like bootstrap). It also makes the internal logic a bit easier to follow, since it's easier to tell whether you're working with a point in time or with the whole recorded history.
This hefty.
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This is primarily renames and repackagings.
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(This is part of a larger reorganization.)
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sequence.
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Per-channel event sequences were a cute idea, but it made reasoning about event resumption much, much harder (case in point: recovering the order of events in a partially-ordered collection is quadratic, since it's basically graph sort). The minor overhead of a global sequence number is likely tolerable, and this simplifies both the API and the internals.
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Trying to reliably do expiry mid-request was causing some anomalies:
* Creating a channel with a dup name would fail, then succeed after listing channels.
It was very hard to reason about which operations needed to trigger expiry, to fix this "correctly," so now expiry runs on every request.
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It now includes events for all channels. Clients are responsible for filtering.
The schema for channel events has changed; it now includes a channel name and ID, in the same format as the sender's name and ID. They also now include a `"type"` field, whose only valid value (as of this writing) is `"message"`.
This is groundwork for delivering message deletion (expiry) events to clients, and notifying clients of channel lifecycle events.
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I had no idea `std` included a `matches!` macro, and I feel we're better off using it.
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vector-of-sequence-numbers stream resume.
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