Merge commit '8a5231ec26' into session-event-stream

packages/core/src/session/execution.ts

@@ -5,6 +5,8 @@ import { SessionRunner } from "./runner/index"
 import { SessionSchema } from "./schema"
 
 export interface Interface {
+  /** Snapshots active execution owned by this process. */
+  readonly active: Effect.Effect<ReadonlySet<SessionSchema.ID>>
   /** Starts execution while idle or joins the active execution. */
   readonly resume: (sessionID: SessionSchema.ID) => Effect.Effect<void, SessionRunner.RunError>
   /** Registers newly recorded work. Repeated wakeups may coalesce. */
@@ -19,5 +21,10 @@ export class Service extends Context.Service<Service, Interface>()("@opencode/v2
 /** Low-level compatibility layer for callers that only need durable Session recording. */
 export const noopLayer = Layer.succeed(
   Service,
-  Service.of({ resume: () => Effect.void, wake: () => Effect.void, interrupt: () => Effect.void }),
+  Service.of({
+    active: Effect.succeed(new Set()),
+    resume: () => Effect.void,
+    wake: () => Effect.void,
+    interrupt: () => Effect.void,
+  }),
 )

packages/core/src/session/execution/local.ts

@@ -28,6 +28,7 @@ export const layer = Layer.effect(
     })
 
     return SessionExecution.Service.of({
+      active: coordinator.active,
       interrupt: coordinator.interrupt,
       resume: coordinator.run,
       wake: coordinator.wake,

packages/core/src/session/run-coordinator.ts

@@ -4,6 +4,8 @@ import { Deferred, Effect, Exit, Fiber, FiberSet, Scope } from "effect"
 
 /** Serializes execution for each key while allowing different keys to run concurrently. */
 export interface Coordinator<Key, E> {
+  /** Snapshots keys with an execution owned by this coordinator. */
+  readonly active: Effect.Effect<ReadonlySet<Key>>
   /** Starts execution while idle or joins the active execution. */
   readonly run: (key: Key) => Effect.Effect<void, E>
   /** Registers one coalesced follow-up after newly recorded work. */
@@ -98,5 +100,5 @@ export const make = <Key, E>(options: {
         return Fiber.interrupt(entry.owner)
       })
 
-    return { run, wake, interrupt }
+    return { active: Effect.sync(() => new Set(active.keys())), run, wake, interrupt }
   })

packages/core/test/session-prompt.test.ts

@@ -25,6 +25,7 @@ const wakeCalls: SessionV2.ID[] = []
 const execution = Layer.succeed(
   SessionExecution.Service,
   SessionExecution.Service.of({
+    active: Effect.succeed(new Set()),
     resume: (sessionID) =>
       Effect.sync(() => {
         executionCalls.push(sessionID)

packages/core/test/session-run-coordinator.test.ts

@@ -66,6 +66,39 @@ describe("SessionRunCoordinator", () => {
     ),
   )
 
+  it.effect("snapshots only active executions", () =>
+    Effect.scoped(
+      Effect.gen(function* () {
+        const firstStarted = yield* Deferred.make<void>()
+        const secondStarted = yield* Deferred.make<void>()
+        const firstGate = yield* Deferred.make<void>()
+        const secondGate = yield* Deferred.make<void>()
+        const coordinator = yield* SessionRunCoordinator.make({
+          drain: (key: string) =>
+            Deferred.succeed(key === "first" ? firstStarted : secondStarted, undefined).pipe(
+              Effect.andThen(Deferred.await(key === "first" ? firstGate : secondGate)),
+            ),
+        })
+
+        expect(Array.from(yield* coordinator.active)).toEqual([])
+        const first = yield* coordinator.run("first").pipe(Effect.forkChild)
+        yield* Deferred.await(firstStarted)
+        expect(Array.from(yield* coordinator.active)).toEqual(["first"])
+
+        const second = yield* coordinator.run("second").pipe(Effect.forkChild)
+        yield* Deferred.await(secondStarted)
+        expect(Array.from(yield* coordinator.active)).toEqual(["first", "second"])
+
+        yield* Deferred.succeed(firstGate, undefined)
+        yield* Fiber.join(first)
+        expect(Array.from(yield* coordinator.active)).toEqual(["second"])
+        yield* Deferred.succeed(secondGate, undefined)
+        yield* Fiber.join(second)
+        expect(Array.from(yield* coordinator.active)).toEqual([])
+      }),
+    ),
+  )
+
   it.effect("coalesces wakes received during active execution", () =>
     Effect.scoped(
       Effect.gen(function* () {

packages/core/test/session-runner-recorded.test.ts

@@ -95,6 +95,7 @@ const execution = Layer.effect(
       drain: (sessionID, force) => sessionRunner.run({ sessionID, force }),
     })
     return SessionExecution.Service.of({
+      active: coordinator.active,
       resume: coordinator.run,
       wake: coordinator.wake,
       interrupt: coordinator.interrupt,

packages/core/test/session-runner.test.ts

@@ -254,6 +254,7 @@ const execution = Layer.effect(
       drain: (sessionID, force) => sessionRunner.run({ sessionID, force }),
     })
     return SessionExecution.Service.of({
+      active: coordinator.active,
       resume: coordinator.run,
       wake: coordinator.wake,
       interrupt: coordinator.interrupt,