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More strict concurrency fixes

This commit is contained in:
Shadowfacts 2024-01-27 14:58:36 -05:00
parent ba60f92223
commit fc26c9fb54
8 changed files with 217 additions and 215 deletions
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3
Packages/ComposeUI/Sources/ComposeUI/ComposeMastodonContext.swift
View File

@ -15,7 +15,8 @@ public protocol ComposeMastodonContext {
var instanceFeatures: InstanceFeatures { get }
func run<Result: Sendable>(_ request: Request<Result>) async throws -> (Result, Pagination?)
func getCustomEmojis(completion: @escaping ([Emoji]) -> Void)
func getCustomEmojis() async -> [Emoji]
@MainActor
func searchCachedAccounts(query: String) -> [AccountProtocol]

6
Packages/ComposeUI/Sources/ComposeUI/Controllers/AutocompleteEmojisController.swift
View File

@ -44,11 +44,7 @@ class AutocompleteEmojisController: ViewController {
@MainActor
private func queryChanged(_ query: String) async {
var emojis = await withCheckedContinuation { continuation in
composeController.mastodonController.getCustomEmojis {
continuation.resume(returning: $0)
}
}
var emojis = await composeController.mastodonController.getCustomEmojis()
guard !Task.isCancelled else {
return
}

58
Packages/Pachyderm/Sources/Pachyderm/Client.swift
View File

@ -12,7 +12,7 @@ import WebURL
/**
The base Mastodon API client.
*/
public class Client {
public struct Client: Sendable {
public typealias Callback<Result: Decodable> = (Response<Result>) -> Void
@ -20,8 +20,6 @@ public class Client {
let session: URLSession
public var accessToken: String?
public var appID: String?
public var clientID: String?
public var clientSecret: String?
@ -61,9 +59,11 @@ public class Client {
return encoder
}()
public init(baseURL: URL, accessToken: String? = nil, session: URLSession = .shared) {
public init(baseURL: URL, accessToken: String? = nil, clientID: String? = nil, clientSecret: String? = nil, session: URLSession = .shared) {
self.baseURL = baseURL
self.accessToken = accessToken
self.clientID = clientID
self.clientSecret = clientSecret
self.session = session
}
@ -150,14 +150,7 @@ public class Client {
"scopes" => scopes.scopeString,
"website" => website?.absoluteString
]))
run(request) { result in
defer { completion(result) }
guard case let .success(application, _) = result else { return }
self.appID = application.id
self.clientID = application.clientID
self.clientSecret = application.clientSecret
}
run(request, completion: completion)
}
public func getAccessToken(authorizationCode: String, redirectURI: String, scopes: [Scope], completion: @escaping Callback<LoginSettings>) {
@ -169,12 +162,7 @@ public class Client {
"redirect_uri" => redirectURI,
"scope" => scopes.scopeString,
]))
run(request) { result in
defer { completion(result) }
guard case let .success(loginSettings, _) = result else { return }
self.accessToken = loginSettings.accessToken
}
run(request, completion: completion)
}
public func revokeAccessToken() async throws {
@ -198,21 +186,16 @@ public class Client {
})
}
public func nodeInfo(completion: @escaping Callback<NodeInfo>) {
public func nodeInfo() async throws -> NodeInfo {
let wellKnown = Request<WellKnown>(method: .get, path: "/.well-known/nodeinfo")
run(wellKnown) { result in
switch result {
case let .failure(error):
completion(.failure(error))
case let .success(wellKnown, _):
if let url = wellKnown.links.first(where: { $0.rel == "http://nodeinfo.diaspora.software/ns/schema/2.0" }),
let href = WebURL(url.href),
href.host == WebURL(self.baseURL)?.host {
let nodeInfo = Request<NodeInfo>(method: .get, path: Endpoint(stringLiteral: href.path))
self.run(nodeInfo, completion: completion)
}
}
let wellKnownResults = try await run(wellKnown).0
if let url = wellKnownResults.links.first(where: { $0.rel == "http://nodeinfo.diaspora.software/ns/schema/2.0" }),
let href = WebURL(url.href),
href.host == WebURL(self.baseURL)?.host {
let nodeInfo = Request<NodeInfo>(method: .get, path: Endpoint(stringLiteral: href.path))
return try await run(nodeInfo).0
} else {
throw NodeInfoError.noWellKnownLink
}
}
@ -600,4 +583,15 @@ extension Client {
case invalidModel(Swift.Error)
case mastodonError(Int, String)
}
enum NodeInfoError: LocalizedError {
case noWellKnownLink
var errorDescription: String? {
switch self {
case .noWellKnownLink:
return "No well-known link"
}
}
}
}

23
ShareExtension/ShareMastodonContext.swift
View File

@ -29,16 +29,7 @@ class ShareMastodonContext: ComposeMastodonContext, ObservableObject {
Task { @MainActor in
async let instance = try? await run(Client.getInstanceV1()).0
async let nodeInfo: NodeInfo? = await withCheckedContinuation({ continuation in
self.client.nodeInfo { response in
switch response {
case .success(let nodeInfo, _):
continuation.resume(returning: nodeInfo)
case .failure(_):
continuation.resume(returning: nil)
}
}
})
async let nodeInfo = try? await client.nodeInfo()
guard let instance = await instance else { return }
self.instanceFeatures.update(instance: InstanceInfo(v1: instance), nodeInfo: await nodeInfo)
}
@ -66,15 +57,13 @@ class ShareMastodonContext: ComposeMastodonContext, ObservableObject {
}
@MainActor
func getCustomEmojis(completion: @escaping ([Emoji]) -> Void) {
func getCustomEmojis() async -> [Emoji] {
if let customEmojis {
completion(customEmojis)
return customEmojis
} else {
Task.detached { @MainActor in
let emojis = (try? await self.run(Client.getCustomEmoji()).0) ?? []
self.customEmojis = emojis
completion(emojis)
}
let emojis = (try? await self.run(Client.getCustomEmoji()).0) ?? []
self.customEmojis = emojis
return emojis
}
}

4
Tusker.xcodeproj/project.pbxproj
View File

@ -314,6 +314,7 @@
D6DD8FFD298495A8002AD3FD /* LogoutService.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6DD8FFC298495A8002AD3FD /* LogoutService.swift */; };
D6DD8FFF2984D327002AD3FD /* BookmarksViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6DD8FFE2984D327002AD3FD /* BookmarksViewController.swift */; };
D6DD996B2998611A0015C962 /* SuggestedProfilesViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6DD996A2998611A0015C962 /* SuggestedProfilesViewController.swift */; };
D6DEBA8D2B6579830008629A /* MainThreadBox.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6DEBA8C2B6579830008629A /* MainThreadBox.swift */; };
D6DF95C12533F5DE0027A9B6 /* RelationshipMO.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6DF95C02533F5DE0027A9B6 /* RelationshipMO.swift */; };
D6DFC69E242C490400ACC392 /* TrackpadScrollGestureRecognizer.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6DFC69D242C490400ACC392 /* TrackpadScrollGestureRecognizer.swift */; };
D6DFC6A0242C4CCC00ACC392 /* Weak.swift in Sources */ = {isa = PBXBuildFile; fileRef = D6DFC69F242C4CCC00ACC392 /* Weak.swift */; };
@ -722,6 +723,7 @@
D6DD8FFC298495A8002AD3FD /* LogoutService.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = LogoutService.swift; sourceTree = "<group>"; };
D6DD8FFE2984D327002AD3FD /* BookmarksViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = BookmarksViewController.swift; sourceTree = "<group>"; };
D6DD996A2998611A0015C962 /* SuggestedProfilesViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SuggestedProfilesViewController.swift; sourceTree = "<group>"; };
D6DEBA8C2B6579830008629A /* MainThreadBox.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = MainThreadBox.swift; sourceTree = "<group>"; };
D6DF95C02533F5DE0027A9B6 /* RelationshipMO.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = RelationshipMO.swift; sourceTree = "<group>"; };
D6DFC69D242C490400ACC392 /* TrackpadScrollGestureRecognizer.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TrackpadScrollGestureRecognizer.swift; sourceTree = "<group>"; };
D6DFC69F242C4CCC00ACC392 /* Weak.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Weak.swift; sourceTree = "<group>"; };
@ -1502,6 +1504,7 @@
D61F75BC293D099600C0B37F /* Lazy.swift */,
D60E2F2B24423EAD005F8713 /* LazilyDecoding.swift */,
D61DC84528F498F200B82C6E /* Logging.swift */,
D6DEBA8C2B6579830008629A /* MainThreadBox.swift */,
D6B81F432560390300F6E31D /* MenuController.swift */,
D6CF5B842AC7C56F00F15D83 /* MultiColumnCollectionViewLayout.swift */,
D64D8CA82463B494006B0BAA /* MultiThreadDictionary.swift */,
@ -2149,6 +2152,7 @@
D601FA61297B539E00A8E8B5 /* ConversationMainStatusCollectionViewCell.swift in Sources */,
D67C57AD21E265FC00C3118B /* LargeAccountDetailView.swift in Sources */,
D601FA5F297B339100A8E8B5 /* ExpandThreadCollectionViewCell.swift in Sources */,
D6DEBA8D2B6579830008629A /* MainThreadBox.swift in Sources */,
D6262C9A28D01C4B00390C1F /* LoadingTableViewCell.swift in Sources */,
D68C2AE325869BAB00548EFF /* AuxiliarySceneDelegate.swift in Sources */,
D6D706A72948D4D0000827ED /* TimlineState.swift in Sources */,

300
Tusker/API/MastodonController.swift
View File

@ -15,8 +15,10 @@ import InstanceFeatures
import Sentry
#endif
import ComposeUI
import OSLog
private let oauthScopes = [Scope.read, .write, .follow]
private let logger = Logger(subsystem: Bundle.main.bundleIdentifier!, category: "MastodonController")
class MastodonController: ObservableObject {
@ -48,26 +50,30 @@ class MastodonController: ObservableObject {
nonisolated let persistentContainer: MastodonCachePersistentStore// = MastodonCachePersistentStore(for: accountInfo, transient: transient)
let instanceURL: URL
var accountInfo: UserAccountInfo?
var accountPreferences: AccountPreferences!
let accountInfo: UserAccountInfo?
private(set) var accountPreferences: AccountPreferences!
let client: Client!
private(set) var client: Client!
let instanceFeatures = InstanceFeatures()
@Published private(set) var account: AccountMO?
@Published private(set) var instance: InstanceV1?
@Published private var instanceV2: InstanceV2?
@Published private(set) var instanceInfo: InstanceInfo!
@Published private(set) var nodeInfo: NodeInfo!
@Published private(set) var lists: [List] = []
@Published private(set) var customEmojis: [Emoji]?
@Published private(set) var followedHashtags: [FollowedHashtag] = []
@Published private(set) var filters: [FilterMO] = []
@MainActor @Published private(set) var account: AccountMO?
@MainActor @Published private(set) var instance: InstanceV1?
@MainActor @Published private var instanceV2: InstanceV2?
@MainActor @Published private(set) var instanceInfo: InstanceInfo!
@MainActor @Published private(set) var nodeInfo: NodeInfo!
@MainActor @Published private(set) var lists: [List] = []
@MainActor @Published private(set) var customEmojis: [Emoji]?
@MainActor @Published private(set) var followedHashtags: [FollowedHashtag] = []
@MainActor @Published private(set) var filters: [FilterMO] = []
private var cancellables = Set<AnyCancellable>()
private var pendingOwnInstanceRequestCallbacks = [(Result<InstanceV1, Client.Error>) -> Void]()
private var ownInstanceRequest: URLSessionTask?
@MainActor
private var fetchOwnInstanceTask: Task<InstanceV1, any Error>?
@MainActor
private var fetchOwnAccountTask: Task<MainThreadBox<AccountMO>, any Error>?
@MainActor
private var fetchCustomEmojisTask: Task<[Emoji], Never>?
var loggedIn: Bool {
accountInfo != nil
@ -222,22 +228,37 @@ class MastodonController: ObservableObject {
Task {
do {
async let ownAccount = try getOwnAccount()
async let ownInstance = try getOwnInstance()
_ = try await (ownAccount, ownInstance)
if instanceFeatures.hasMastodonVersion(4, 0, 0) {
async let _ = try? getOwnInstanceV2()
}
loadLists()
_ = await loadFilters()
await loadServerPreferences()
_ = try await getOwnAccount()
} catch {
Logging.general.error("MastodonController initialization failed: \(String(describing: error))")
logger.error("Fetch own account failed: \(String(describing: error))")
}
}
let instanceTask = Task {
do {
_ = try await getOwnInstance()
if instanceFeatures.hasMastodonVersion(4, 0, 0) {
_ = try? await getOwnInstanceV2()
}
} catch {
logger.error("Fetch instance failed: \(String(describing: error))")
}
}
Task {
_ = await instanceTask.value
await loadLists()
}
Task {
_ = await instanceTask.value
_ = await loadFilters()
}
Task {
_ = await instanceTask.value
await loadServerPreferences()
}
}
@MainActor
@ -250,36 +271,43 @@ class MastodonController: ObservableObject {
}
}
func getOwnAccount(completion: ((Result<AccountMO, Client.Error>) -> Void)? = nil) {
if let account {
completion?(.success(account))
} else {
let request = Client.getSelfAccount()
run(request) { response in
switch response {
case let .failure(error):
completion?(.failure(error))
case let .success(account, _):
let context = self.persistentContainer.viewContext
context.perform {
let accountMO: AccountMO
if let existing = self.persistentContainer.account(for: account.id, in: context) {
accountMO = existing
existing.updateFrom(apiAccount: account, container: self.persistentContainer)
} else {
accountMO = self.persistentContainer.addOrUpdateSynchronously(account: account, in: context)
}
accountMO.active = true
self.account = accountMO
completion?(.success(accountMO))
}
}
func getOwnAccount(completion: (@Sendable (Result<AccountMO, any Error>) -> Void)? = nil) {
Task.detached {
do {
let account = try await self.getOwnAccount()
completion?(.success(account))
} catch {
completion?(.failure(error))
}
}
}
@MainActor
func getOwnAccount() async throws -> AccountMO {
if let account {
return account
} else if let fetchOwnAccountTask {
return try await fetchOwnAccountTask.value.value
} else {
let task = Task {
let account = try await run(Client.getSelfAccount()).0
let context = persistentContainer.viewContext
return await context.perform {
let accountMO: AccountMO
if let existing = self.persistentContainer.account(for: account.id, in: context) {
accountMO = existing
existing.updateFrom(apiAccount: account, container: self.persistentContainer)
} else {
accountMO = self.persistentContainer.addOrUpdateSynchronously(account: account, in: context)
}
// TODO: is AccountMO.active used anywhere?
accountMO.active = true
self.account = accountMO
return MainThreadBox(value: accountMO)
}
}
}
if let account = account {
return account
} else {
@ -291,90 +319,60 @@ class MastodonController: ObservableObject {
}
}
func getOwnInstance(completion: ((InstanceV1) -> Void)? = nil) {
getOwnInstanceInternal(retryAttempt: 0) {
if case let .success(instance) = $0 {
completion?(instance)
func getOwnInstance(completion: (@Sendable (InstanceV1) -> Void)? = nil) {
Task.detached {
let ownInstance = try? await self.getOwnInstance()
if let ownInstance {
completion?(ownInstance)
}
}
}
@MainActor
func getOwnInstance() async throws -> InstanceV1 {
return try await withCheckedThrowingContinuation({ continuation in
getOwnInstanceInternal(retryAttempt: 0) { result in
continuation.resume(with: result)
}
})
}
private func getOwnInstanceInternal(retryAttempt: Int, completion: ((Result<InstanceV1, Client.Error>) -> Void)?) {
// this is main thread only to prevent concurrent access to ownInstanceRequest and pendingOwnInstanceRequestCallbacks
assert(Thread.isMainThread)
if let instance = self.instance {
completion?(.success(instance))
if let instance {
return instance
} else if let fetchOwnInstanceTask {
return try await fetchOwnInstanceTask.value
} else {
if let completion = completion {
pendingOwnInstanceRequestCallbacks.append(completion)
}
let task = Task {
let instance = try await retrying("Fetch Own Instance") {
try await run(Client.getInstanceV1()).0
}
self.instance = instance
if ownInstanceRequest == nil {
let request = Client.getInstanceV1()
ownInstanceRequest = run(request) { (response) in
switch response {
case .failure(let error):
let delay: DispatchTimeInterval
switch retryAttempt {
case 0:
delay = .seconds(1)
case 1:
delay = .seconds(5)
case 2:
delay = .seconds(30)
case 3:
delay = .seconds(60)
default:
// if we've failed four times, just give up :/
for completion in self.pendingOwnInstanceRequestCallbacks {
completion(.failure(error))
}
self.pendingOwnInstanceRequestCallbacks = []
return
}
DispatchQueue.main.asyncAfter(deadline: .now() + delay) {
// completion is nil because in this invocation of getOwnInstanceInternal we've already added it to the pending callbacks array
self.getOwnInstanceInternal(retryAttempt: retryAttempt + 1, completion: nil)
}
case let .success(instance, _):
DispatchQueue.main.async {
self.ownInstanceRequest = nil
self.instance = instance
for completion in self.pendingOwnInstanceRequestCallbacks {
completion(.success(instance))
}
self.pendingOwnInstanceRequestCallbacks = []
}
}
Task {
await fetchNodeInfo()
}
client.nodeInfo { result in
switch result {
case let .failure(error):
print("Unable to get node info: \(error)")
case let .success(nodeInfo, _):
DispatchQueue.main.async {
self.nodeInfo = nodeInfo
}
}
}
return instance
}
fetchOwnInstanceTask = task
return try await task.value
}
}
@MainActor
private func fetchNodeInfo() async {
if let nodeInfo = try? await client.nodeInfo() {
self.nodeInfo = nodeInfo
}
}
private func retrying<T: Sendable>(_ label: StaticString, action: () async throws -> T) async throws -> T {
for attempt in 0..<4 {
do {
return try await action()
} catch {
let seconds = UInt64(truncating: pow(2, attempt) as NSNumber)
logger.error("\(label, privacy: .public) failed, waiting \(seconds, privacy: .public)s before retrying. Reason: \(String(describing: error))")
try! await Task.sleep(nanoseconds: seconds * NSEC_PER_SEC)
}
}
return try await action()
}
@MainActor
private func getOwnInstanceV2() async throws {
self.instanceV2 = try await client.run(Client.getInstanceV2()).0
}
@ -425,43 +423,43 @@ class MastodonController: ObservableObject {
}
}
func getCustomEmojis(completion: @escaping ([Emoji]) -> Void) {
if let emojis = self.customEmojis {
completion(emojis)
@MainActor
func getCustomEmojis() async -> [Emoji] {
if let customEmojis {
return customEmojis
} else if let fetchCustomEmojisTask {
return await fetchCustomEmojisTask.value
} else {
let request = Client.getCustomEmoji()
run(request) { (response) in
if case let .success(emojis, _) = response {
DispatchQueue.main.async {
self.customEmojis = emojis
}
completion(emojis)
} else {
completion([])
}
let task = Task {
let emojis = (try? await run(Client.getCustomEmoji()).0) ?? []
customEmojis = emojis
return emojis
}
fetchCustomEmojisTask = task
return await task.value
}
}
private func loadLists() {
private func loadLists() async {
let req = Client.getLists()
run(req) { response in
if case .success(let lists, _) = response {
DispatchQueue.main.async {
self.lists = lists.sorted(using: SemiCaseSensitiveComparator.keyPath(\.title))
}
let context = self.persistentContainer.backgroundContext
context.perform {
for list in lists {
if let existing = try? context.fetch(ListMO.fetchRequest(id: list.id)).first {
existing.updateFrom(apiList: list)
} else {
_ = ListMO(apiList: list, context: context)
}
}
self.persistentContainer.save(context: context)
guard let (lists, _) = try? await run(req) else {
return
}
let sorted = lists.sorted(using: SemiCaseSensitiveComparator.keyPath(\.title))
await MainActor.run {
self.lists = sorted
}
let context = persistentContainer.backgroundContext
await context.perform {
for list in lists {
if let existing = try? context.fetch(ListMO.fetchRequest(id: list.id)).first {
existing.updateFrom(apiList: list)
} else {
_ = ListMO(apiList: list, context: context)
}
}
self.persistentContainer.save(context: context)
}
}

23
Tusker/MainThreadBox.swift Normal file
View File

@ -0,0 +1,23 @@
//
// MainThreadBox.swift
// Tusker
//
// Created by Shadowfacts on 1/27/24.
// Copyright © 2024 Shadowfacts. All rights reserved.
//
import Foundation
struct MainThreadBox<T>: @unchecked Sendable {
private let _value: T
@MainActor
var value: T {
_value
}
@MainActor
init(value: T) {
self._value = value
}
}

13
Tusker/Screens/Onboarding/OnboardingViewController.swift
View File

@ -145,27 +145,24 @@ class OnboardingViewController: UINavigationController {
throw Error.gettingAccessToken(error)
}
// construct a temporary UserAccountInfo instance for the MastodonController to use to fetch its own account
let tempAccountInfo = UserAccountInfo(tempInstanceURL: instanceURL, clientID: clientID, clientSecret: clientSecret, accessToken: accessToken)
mastodonController.accountInfo = tempAccountInfo
// construct a temporary Client to use to fetch the user's account
let tempClient = Client(baseURL: instanceURL, accessToken: accessToken, session: .appDefault)
updateStatus("Checking Credentials")
let ownAccount: AccountMO
let ownAccount: Account
do {
ownAccount = try await retrying("Getting own account") {
try await mastodonController.getOwnAccount()
try await tempClient.run(Client.getSelfAccount()).0
}
} catch {
throw Error.gettingOwnAccount(error)
}
let accountInfo = UserAccountsManager.shared.addAccount(instanceURL: instanceURL, clientID: clientID, clientSecret: clientSecret, username: ownAccount.username, accessToken: accessToken)
mastodonController.accountInfo = accountInfo
self.onboardingDelegate?.didFinishOnboarding(account: accountInfo)
}
private func retrying<T>(_ label: StaticString, action: () async throws -> T) async throws -> T {
private func retrying<T: Sendable>(_ label: StaticString, action: () async throws -> T) async throws -> T {
for attempt in 0..<4 {
do {
return try await action()