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refactor(core): simplify session context epochs (#33378)

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Kit Langton 2026-06-22 17:34:03 +02:00 • committed by GitHub
commit c6ee511485
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16 changed files with 281 additions and 728 deletions
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28
packages/core/src/session/projector.ts
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@ -329,19 +329,14 @@ export const layer = Layer.effectDiscard(
if (next) yield* applyUsage(db, sessionID, next)
}),
)
yield* events.project(SessionEvent.AgentSwitched, (event) => {
if (event.durable === undefined) return Effect.die("Durable Session event is missing aggregate sequence")
return db
yield* events.project(SessionEvent.AgentSwitched, (event) =>
db
.update(SessionTable)
.set({ agent: event.data.agent, time_updated: DateTime.toEpochMillis(event.data.timestamp) })
.where(eq(SessionTable.id, event.data.sessionID))
.run()
.pipe(
Effect.orDie,
Effect.andThen(run(db, event)),
Effect.andThen(SessionContextEpoch.requestReplacement(db, event.data.sessionID, event.durable.seq)),
)
})
.pipe(Effect.orDie, Effect.andThen(run(db, event))),
)
yield* events.project(SessionEvent.ModelSwitched, (event) =>
Effect.gen(function* () {
yield* db
@ -351,8 +346,6 @@ export const layer = Layer.effectDiscard(
.run()
.pipe(Effect.orDie)
yield* run(db, event)
if (event.durable === undefined) return yield* Effect.die("Durable Session event is missing aggregate sequence")
yield* SessionContextEpoch.requestReplacement(db, event.data.sessionID, event.durable.seq)
}),
)
yield* events.project(SessionEvent.Prompted, (event) =>
@ -407,7 +400,6 @@ export const layer = Layer.effectDiscard(
}),
)
yield* events.project(SessionEvent.InterruptRequested, () => Effect.void)
// TODO: Reconstruct context epoch replacement state during replay without adding replay state to every EventV2 payload.
yield* events.project(SessionEvent.ContextUpdated, (event) => run(db, event))
yield* events.project(SessionEvent.Synthetic, (event) => run(db, event))
yield* events.project(SessionEvent.Shell.Started, (event) => run(db, event))
@ -426,15 +418,9 @@ export const layer = Layer.effectDiscard(
yield* events.project(SessionEvent.Reasoning.Started, (event) => run(db, event))
yield* events.project(SessionEvent.Reasoning.Ended, (event) => run(db, event))
// yield* events.project(SessionEvent.Retried, (event) => run(db, event))
yield* events.project(SessionEvent.Compaction.Ended, (event) => {
if (event.durable === undefined) return Effect.die("Durable Session event is missing aggregate sequence")
if (event.durable.version === 1) return Effect.void
const seq = event.durable.seq
return Effect.gen(function* () {
yield* run(db, event)
yield* SessionContextEpoch.requestReplacement(db, event.data.sessionID, seq)
})
})
yield* events.project(SessionEvent.Compaction.Ended, (event) =>
event.durable?.version === 1 ? Effect.void : run(db, event),
)
}),
)