withCancellationOrGracefulShutdownHandler

[adam-fowler]

A common pattern with services is

try await withTaskCancellationHandler {
    try await withGracefulShutdownHandler {
        doStuff()
    } onGracefulShutdown {
        stop()
    }
} onCancel: {
    stop()
}

Is it worthwhile providing a small helper API to do this eg

@_unsafeInheritExecutor
public func withCancellationOrGracefulShutdownHandler<T>(
    operation: () async throws -> T,
    onCancellationOrGracefulShutdown handler: @Sendable @escaping () -> Void
) async rethrows -> T {
    return try await withTaskCancellationHandler {
        try await withGracefulShutdownHandler(operation: operation, onGracefulShutdown: handler)
    } onCancel: {
        handler()
    }
}

[FranzBusch]

Seems reasonable to me. Mind opening a PR for this?

[adam-fowler]

Will do.

[FranzBusch]

Closed with #176