Example Fluent-SQLite iOS

[0xLeif]

FLite is aim to be used with iOS to save data using SQLite.

Vapor 3 is supported and working in the master branch.

• FLite-Vapor3-Release
• iOS Example Project
• iOS POC Project

Vapor 4 has the iOS test passing, but fails on an actual iOS project.

• FLite-Vapor4-Release
• Tests

FLite 0.2.0 is using Vapor 4

I am getting this error on an iOS project

Fatal error: Unexpected error while running SelectableEventLoop: kqueue(): Too many open files (errno: 24).: file /Users/cri/Library/Developer/Xcode/DerivedData/test-gsikgwqyfpktaldxljjiybotjrwo/SourcePackages/checkouts/swift-nio/Sources/NIO/EventLoop.swift, line 828
2020-07-08 16:59:03.742934-0500 test[94438:1326247] Fatal error: Unexpected error while running SelectableEventLoop: kqueue(): Too many open files (errno: 24).: file /Users/cri/Library/Developer/Xcode/DerivedData/test-gsikgwqyfpktaldxljjiybotjrwo/SourcePackages/checkouts/swift-nio/Sources/NIO/EventLoop.swift, line 828

Here is the example iOS project code

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        
        let semaphore = DispatchSemaphore(value: 0)
        var values = [Todo]()
        
        try? FLite.prepare(migration: Todo.self).wait()
        
        try! FLite.add(model: Todo(title: "Hello World", strings: ["hello", "world"])).wait()
        
        FLite.fetch(model: Todo.self)
            .whenSuccess { (todos) in
                values = todos
                semaphore.signal()
        }
        
        semaphore.wait()
        
        print("Values: \(values)")
    }
}

[tanner0101]

Hi @0xLeif. My guess is the problem is here: https://github.com/0xLeif/FLite/blob/develop/Sources/FLite/FLite.swift#L30. For maximum concurrency, set the number of threads to System.coreCount. Since NIO is non-blocking, no more than that is needed.

[0xLeif]

@tanner0101 Awesome that was it! Thanks!!

Values: [Todo id: Optional(1C8E9B2E-33CD-42CC-9FCB-9D557801AA3B)
    title: Hello World
    someList: ["hello", "world"]]