[Swift] Allow a `WorkflowHost` to be configured to run on a specific queue

Open davidapgar opened this issue 6 years ago • 1 comments

As of right now, all workflows assume they are running on the main queue (and additional assertions are being added to ensure this).

While adding assertions, it's been brought up that we should make this configurable: https://github.com/square/workflow/pull/362#discussion_r286601347

Add support for configuring the queue a workflow runs on.

May 22 '19 22:05 davidapgar

FYI we do this in Kotlin via the baseContext parameter to WorkflowHost.Factory (or any of the run methods, which all take a context override), which lets you specify the CoroutineDispatcher to execute the runtime one.

https://github.com/square/workflow/blob/82ecbbc446c07663aa68af31de0b9ad52d1a0878/kotlin/workflow-runtime/src/main/java/com/squareup/workflow/WorkflowHost.kt#L67

https://github.com/square/workflow/blob/82ecbbc446c07663aa68af31de0b9ad52d1a0878/kotlin/workflow-runtime/src/main/java/com/squareup/workflow/WorkflowHost.kt#L84-L88

May 22 '19 22:05 zach-klippenstein