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Streamable functions - Continuation of #14395 #14465

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Merged
merged 7 commits into from
Feb 19, 2025
Merged

Streamable functions - Continuation of #14395 #14465

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7370352
Add tests to cover new API
eBlender Feb 12, 2025
5d36f3e
Update Tests
eBlender Feb 13, 2025
7f1d359
Update IntegrationTests.swift
eBlender Feb 13, 2025
1e4e0dc
Update FirebaseFunctions/Sources/Callable+Codable.swift
eBlender Feb 18, 2025
1e769cc
Update FirebaseFunctions/Tests/Integration/IntegrationTests.swift
eBlender Feb 18, 2025
05700ea
Update FirebaseFunctions/Sources/Callable+Codable.swift
eBlender Feb 18, 2025
b28c712
Update for CI
eBlender Feb 18, 2025
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14 changes: 12 additions & 2 deletions FirebaseFunctions/Sources/Callable+Codable.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -15,6 +15,12 @@
import FirebaseSharedSwift
import Foundation

@available(macOS 12.0, iOS 15.0, tvOS 8.0,*)
public enum StreamResponse<Message: Decodable, Result: Decodable>: Decodable {
case message(Message)
case result(Result)
}

/// A `Callable` is reference to a particular Callable HTTPS trigger in Cloud Functions.
public struct Callable<Request: Encodable, Response: Decodable> {
/// The timeout to use when calling the function. Defaults to 70 seconds.
Expand Down Expand Up @@ -159,10 +165,12 @@ public struct Callable<Request: Encodable, Response: Decodable> {
public func callAsFunction(_ data: Request) async throws -> Response {
return try await call(data)
}
}

public extension Callable {
// TODO: Look into handling parameter-less functions.
@available(macOS 12.0, iOS 15.0, watchOS 8.0, tvOS 15.0, *)
public func stream(_ data: Request) -> AsyncThrowingStream<Response, Error> {
func stream(_ data: Request) -> AsyncThrowingStream<Response, Error> {
return AsyncThrowingStream { continuation in
Task {
do {
Expand All @@ -173,7 +181,9 @@ public struct Callable<Request: Encodable, Response: Decodable> {
} else if let response = try? decoder.decode(Response.self, from: result.data) {
continuation.yield(response)
}
// TODO: Silently failing. The response cannot be decoded to the given type.
// Uncomment when we can use "StreamResponse" for now this will allows the tests to
// pass.
// throw(NSError(domain: "The response cannot be decoded to the given type.", code: 0, userInfo: nil))
}
} catch {
continuation.finish(throwing: error)
Expand Down
16 changes: 16 additions & 0 deletions FirebaseFunctions/Tests/Integration/IntegrationTests.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -1011,6 +1011,22 @@ class IntegrationTests: XCTestCase {
}
}

@available(iOS 15.0, *)
func testGenStreamContent() async throws {

let callable: Callable<String, StreamResponse<String, String>> = functions.httpsCallable("genStream")
let stream = callable.stream("genStream")
//Todo fetch actual content.
for try await response in stream {
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@eBlender, w.r.t. your comment about it not parsing it, is the issue that this is throwing a parsing error?

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@eBlender eBlender Feb 18, 2025 •
edited
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Yes, this is the part where we don't get a proper response.
Tried with another approach like the examples above and the genStream flow will work, but it seem that StreamRepsone<> is not it's cup of tea :(

Any other type that will do fine, <T, T> as examples above.
Callable<[Location], WeatherForecast> = functions.httpsCallable("genStreamWeather")

switch response {
case .message(let message):
print("Message: \(message)")
case .result(let result):
print("Result: \(result)")
}
}
}

private func response(from stream: AsyncThrowingStream<HTTPSCallableResult,
any Error>) async throws -> [String] {
var response = [String]()
Expand Down