Module event_log

Client Event Log

The goal here is to maintain a single, ordered, append only log of all important client-side events: low or high level, and move as much of coordination between different parts of the system in a natural and decomposed way.

Any event log “follower” can just keep going through all events and react to ones it is interested in (and understands), potentially emitting events of its own, and atomically updating persisted event log position (“cursor”) of events that were already processed.

Structs

EventKind

EventLogEntry

EventLogId

Ordered, contiguous ID space, which is easy for event log followers to track.

EventLogIdPrefix

EventLogIdPrefixAll

UnordedEventLogId

A self-allocated ID that is mostly ordered

UnorderedEventLogEntry

UnorderedEventLogIdPrefixAll

Traits

DBTransactionEventLogExt

Event

Functions

handle_events