Skip to content

[codex] migrate Effect.fn in apps/server/src/provider/makeManagedServerProvider.ts #1640

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
juliusmarminge merged 2 commits into from
Apr 1, 2026
+56 −54
Merged

[codex] migrate Effect.fn in apps/server/src/provider/makeManagedServerProvider.ts #1640

Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
cc8d098
migrate Effect.fn in apps/server/src/provider/makeManagedServerProvid…
juliusmarminge Apr 1, 2026
55d88a6
bad code
juliusmarminge Apr 1, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
110 changes: 56 additions & 54 deletions apps/server/src/provider/makeManagedServerProvider.ts
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -5,68 +5,70 @@ import * as Semaphore from "effect/Semaphore";
import type { ServerProviderShape } from "./Services/ServerProvider";
import { ServerSettingsError } from "@t3tools/contracts";

export function makeManagedServerProvider<Settings>(input: {
export const makeManagedServerProvider = Effect.fn("makeManagedServerProvider")(function* <
Settings,
>(input: {
readonly getSettings: Effect.Effect<Settings>;
readonly streamSettings: Stream.Stream<Settings>;
readonly haveSettingsChanged: (previous: Settings, next: Settings) => boolean;
readonly checkProvider: Effect.Effect<ServerProvider, ServerSettingsError>;
readonly refreshInterval?: Duration.Input;
}): Effect.Effect<ServerProviderShape, ServerSettingsError, Scope.Scope> {
return Effect.gen(function* () {
const refreshSemaphore = yield* Semaphore.make(1);
const changesPubSub = yield* Effect.acquireRelease(
PubSub.unbounded<ServerProvider>(),
PubSub.shutdown,
);
const initialSettings = yield* input.getSettings;
const initialSnapshot = yield* input.checkProvider;
const snapshotRef = yield* Ref.make(initialSnapshot);
const settingsRef = yield* Ref.make(initialSettings);
}): Effect.fn.Return<ServerProviderShape, ServerSettingsError, Scope.Scope> {
const refreshSemaphore = yield* Semaphore.make(1);
const changesPubSub = yield* Effect.acquireRelease(
PubSub.unbounded<ServerProvider>(),
PubSub.shutdown,
);
const initialSettings = yield* input.getSettings;
const initialSnapshot = yield* input.checkProvider;
const snapshotRef = yield* Ref.make(initialSnapshot);
const settingsRef = yield* Ref.make(initialSettings);

const applySnapshot = (nextSettings: Settings, options?: { readonly forceRefresh?: boolean }) =>
refreshSemaphore.withPermits(1)(
Effect.gen(function* () {
const forceRefresh = options?.forceRefresh === true;
const previousSettings = yield* Ref.get(settingsRef);
if (!forceRefresh && !input.haveSettingsChanged(previousSettings, nextSettings)) {
yield* Ref.set(settingsRef, nextSettings);
return yield* Ref.get(snapshotRef);
}
const applySnapshotBase = Effect.fn("applySnapshot")(function* (
nextSettings: Settings,
options?: { readonly forceRefresh?: boolean },
) {
const forceRefresh = options?.forceRefresh === true;
const previousSettings = yield* Ref.get(settingsRef);
if (!forceRefresh && !input.haveSettingsChanged(previousSettings, nextSettings)) {
yield* Ref.set(settingsRef, nextSettings);
return yield* Ref.get(snapshotRef);
}

const nextSnapshot = yield* input.checkProvider;
yield* Ref.set(settingsRef, nextSettings);
yield* Ref.set(snapshotRef, nextSnapshot);
yield* PubSub.publish(changesPubSub, nextSnapshot);
return nextSnapshot;
}),
);
const nextSnapshot = yield* input.checkProvider;
yield* Ref.set(settingsRef, nextSettings);
yield* Ref.set(snapshotRef, nextSnapshot);
yield* PubSub.publish(changesPubSub, nextSnapshot);
return nextSnapshot;
});
const applySnapshot = (nextSettings: Settings, options?: { readonly forceRefresh?: boolean }) =>
refreshSemaphore.withPermits(1)(applySnapshotBase(nextSettings, options));

const refreshSnapshot = Effect.gen(function* () {
const nextSettings = yield* input.getSettings;
return yield* applySnapshot(nextSettings, { forceRefresh: true });
});
const refreshSnapshot = Effect.fn("refreshSnapshot")(function* () {
const nextSettings = yield* input.getSettings;
return yield* applySnapshot(nextSettings, { forceRefresh: true });
});

yield* Stream.runForEach(input.streamSettings, (nextSettings) =>
Effect.asVoid(applySnapshot(nextSettings)),
).pipe(Effect.forkScoped);
yield* Stream.runForEach(input.streamSettings, (nextSettings) =>
Effect.asVoid(applySnapshot(nextSettings)),
).pipe(Effect.forkScoped);

yield* Effect.forever(
Effect.sleep(input.refreshInterval ?? "60 seconds").pipe(
Effect.flatMap(() => refreshSnapshot),
Effect.ignoreCause({ log: true }),
),
).pipe(Effect.forkScoped);
yield* Effect.forever(
Effect.sleep(input.refreshInterval ?? "60 seconds").pipe(
Effect.flatMap(() => refreshSnapshot()),
Effect.ignoreCause({ log: true }),
),
).pipe(Effect.forkScoped);

return {
getSnapshot: input.getSettings.pipe(
Effect.flatMap(applySnapshot),
Effect.tapError(Effect.logError),
Effect.orDie,
),
refresh: refreshSnapshot.pipe(Effect.tapError(Effect.logError), Effect.orDie),
get streamChanges() {
return Stream.fromPubSub(changesPubSub);
},
} satisfies ServerProviderShape;
});
}
return {
getSnapshot: input.getSettings.pipe(
Effect.flatMap(applySnapshot),
Effect.tapError(Effect.logError),
Effect.orDie,
),
refresh: refreshSnapshot().pipe(Effect.tapError(Effect.logError), Effect.orDie),
get streamChanges() {
return Stream.fromPubSub(changesPubSub);
},
} satisfies ServerProviderShape;
});
Loading