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Storage async await #8289

Merged
merged 18 commits into from Jul 23, 2021
Merged

Storage async await #8289

merged 18 commits into from Jul 23, 2021

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paulb777
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@paulb777 paulb777 commented Jun 22, 2021

Storage Integration Tests are converted to async/await and four new APIs are added to cover cases that don't get an automatic Xcode conversion.

If you want to experiment, the test infra is green here.

  • Use Xcode 13
  • Update Credentials.swift
  • Add a GoogleService-Info.plist to the AppHost target
  • pod gen FirebaseStorageSwift --auto-open --local-sources=./ --platforms=ios
    Xcode 13+ automatically converts Objective C APIs that return void and take a completion block parameter to an additional async API.

Googlers can see the API proposal at go/firebase-storage-async-await1. An excerpt follows:

The automatic API conversions for Storage are shown in Column G of this spreadsheet designed by @peterfriese. Note that the APIs that return a StorageDownloadTask or StorageUploadTask are not converted.

For Storage, Xcode automatically converts the following APIs to async versions as shown here:

open func downloadURL(completion: @escaping (URL?, Error?) -> Void) open func downloadURL() async throws -> URL
open func listAll(completion: @escaping (StorageListResult, Error?) -> Void) open func listAll() async throws -> StorageListResult
open func list(maxResults: Int64, completion: @escaping (StorageListResult, Error?) -> Void) open func list(maxResults: Int64) async throws -> StorageListResult
open func list(maxResults: Int64, pageToken: String, completion: @escaping (StorageListResult, Error?) -> Void) open func list(maxResults: Int64, pageToken: String) async throws -> StorageListResult
open func getMetadata(completion: @escaping (StorageMetadata?, Error?) -> Void) open func getMetadata() async throws -> StorageMetadata
open func updateMetadata(_ metadata: StorageMetadata, completion: ((StorageMetadata?, Error?) -> Void)? = nil) open func updateMetadata(_ metadata: StorageMetadata) async throws -> StorageMetadata
open func delete(completion: ((Error?) -> Void)? = nil) open func delete() async throws

The following APIs have completion parameters but do not get an automatic async API generated because they do not have a Void return value:

Screen Shot 2021-07-12 at 9 38 52 AM

I implemented the following four APIs (full implementation here) to fill in the gap by providing APIs to do the implementation without the task handle return value:

Screen Shot 2021-07-13 at 9 19 23 AM

The functions are renamed to avoid collisions with the existing API.

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google-oss-bot commented Jun 22, 2021

Coverage Report

Affected SDKs

No changes between base commit (d550a72) and head commit (2bffe65).

Test Logs

@paulb777 paulb777 force-pushed the pb-storage-async branch 2 times, most recently from 4007610 to ffdbc7b Compare July 1, 2021 14:31
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@ncooke3 ncooke3 left a comment

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This is looking really neat! 😎

@paulb777 paulb777 marked this pull request as ready for review July 12, 2021 16:45
@paulb777 paulb777 changed the title Storage async await WIP Storage async await Jul 12, 2021
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API change is now approved. The PR is ready for final review and merge.

@paulb777 paulb777 assigned ncooke3 and unassigned ryanwilson Jul 22, 2021
FirebaseStorageSwift/Sources/AsyncAwait.swift Outdated Show resolved Hide resolved
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Thanks for the thorough review @ncooke3 . Lots of good catches! 💯

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LGTM 🚀

@paulb777 paulb777 merged commit 2d4e139 into master Jul 23, 2021
@paulb777 paulb777 deleted the pb-storage-async branch July 23, 2021 22:45
@firebase firebase locked and limited conversation to collaborators Aug 23, 2021
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5 participants