- April 27, 2024
- Mins Read
Aojet is an actor model implemetion for swift.
Aojet is available through Carthage. Add this line to your Cartfile
github “aojet/Aojet”
This is a simple actor implementation:
class SomeActor: Actor {
override func onReceive(message: Any) throws {
switch message {
case let m as DoSomething:
doSomething(object: m.object)
default:
try super.onReceive(message: message)
}
}
func doSomething(object: Any) { //This should run on the actor thread.
print(Thread.current)
print(“Do something with object: \(object)”)
//Do something
}
struct DoSomething {
let object: Any
}
}
let actorSystem = ActorSystem.system
actorSystem.traceInterface = ActorTrace() //For internal logging
let actor = try actorSystem.actorOf(path: “testActor”, creator: AnyActorCreator{ () -> Actor in
return SomeActor()
})
actor.send(message: SomeActor.DoSomething(object: “An object”)) //Success
actor.send(message: “An string”) //Drop
actor.send(message: SomeActor.DoSomething(object: “Another object”)) //Success
class SomeActor: AskableActor {
override func onAsk(message: Any) throws -> Promise<Any>? {
switch message {
case let m as AskSomething:
return askSomething(object: m.object)
default:
let p = try super.onAsk(message: message)
print(“Promise: \(p)”)
return p
}
}
override func onReceive(message: Any) throws {
switch message {
case let m as DoSomething:
doSomething(object: m.object)
default:
try super.onReceive(message: message)
}
}
func doSomething(object: Any) { //This should run on the actor thread.
print(Thread.current)
print(“Do something with object: \(object)”)
//Do something
}
func askSomething(object: Any) -> Promise<Any> { //This should run on the actor thread.
print(Thread.current)
print(“Ask something with object: \(object)”)
return Promise(value: “A response”)
}
struct DoSomething {
let object: Any
}
struct AskSomething {
let object: Any
}
}
let p1: Promise<String> = actor.ask(message: SomeActor.AskSomething(object: “An object for ask”))
p1.then { (res) in
print(“Ask response:\(res)”)
}.failure { (error) in
print(“Ask error:\(error)”)
}
There are some ways to create a promise:
//Define an error for test
enum TestError: Error {
case general(message: String)
}
//Immediate Promise
let p1 = Promise(value: 1)
let p2 = Promise<Int>(error: TestError.general(message: “Test error.”))
//Async Promise
let p3 = Promise<String> { (resolver) in
let url = URL(string: “https://api.ipify.org”)
let task = URLSession.shared.dataTask(with: url!) {(data, response, error) in
if error != nil {
resolver.error(error!)
} else if data != nil {
let s = String(bytes: data!, encoding: String.Encoding.utf8)
print(s)
resolver.result(s)
} else {
resolver.result(nil)
}
}
task.resume()
}
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