mirror of
https://github.com/Swiftgram/Telegram-iOS.git
synced 2025-06-16 05:55:20 +00:00
1114 lines
50 KiB
Swift
1114 lines
50 KiB
Swift
import Foundation
|
|
import Postbox
|
|
import SwiftSignalKit
|
|
import TelegramApi
|
|
import MtProtoKit
|
|
import RangeSet
|
|
|
|
private typealias SignalKitTimer = SwiftSignalKit.Timer
|
|
|
|
private final class MultipartDownloadState {
|
|
let aesKey: Data
|
|
var aesIv: Data
|
|
let decryptedSize: Int64?
|
|
|
|
var currentSize: Int64 = 0
|
|
|
|
init(encryptionKey: SecretFileEncryptionKey?, decryptedSize: Int64?) {
|
|
if let encryptionKey = encryptionKey {
|
|
self.aesKey = encryptionKey.aesKey
|
|
self.aesIv = encryptionKey.aesIv
|
|
} else {
|
|
self.aesKey = Data()
|
|
self.aesIv = Data()
|
|
}
|
|
self.decryptedSize = decryptedSize
|
|
}
|
|
|
|
func transform(offset: Int64, data: Data) -> Data {
|
|
if self.aesKey.count != 0 {
|
|
var decryptedData = data
|
|
assert(decryptedSize != nil)
|
|
assert(decryptedData.count % 16 == 0)
|
|
let decryptedDataCount = decryptedData.count
|
|
assert(offset == self.currentSize)
|
|
decryptedData.withUnsafeMutableBytes { rawBytes -> Void in
|
|
let bytes = rawBytes.baseAddress!.assumingMemoryBound(to: UInt8.self)
|
|
self.aesIv.withUnsafeMutableBytes { rawIv -> Void in
|
|
let iv = rawIv.baseAddress!.assumingMemoryBound(to: UInt8.self)
|
|
MTAesDecryptBytesInplaceAndModifyIv(bytes, decryptedDataCount, self.aesKey, iv)
|
|
}
|
|
}
|
|
if self.currentSize + Int64(decryptedData.count) > self.decryptedSize! {
|
|
decryptedData.count = Int(self.decryptedSize! - self.currentSize)
|
|
}
|
|
self.currentSize += Int64(decryptedData.count)
|
|
return decryptedData
|
|
} else {
|
|
return data
|
|
}
|
|
}
|
|
}
|
|
|
|
private enum MultipartFetchDownloadError {
|
|
case generic
|
|
case switchToCdn(id: Int32, token: Data, key: Data, iv: Data, partHashes: [Int64: Data])
|
|
case reuploadToCdn(masterDatacenterId: Int32, token: Data)
|
|
case revalidateMediaReference
|
|
case hashesMissing
|
|
case fatal
|
|
}
|
|
|
|
private enum MultipartFetchGenericLocationResult {
|
|
case none
|
|
case location(Api.InputFileLocation)
|
|
case revalidate
|
|
}
|
|
|
|
private enum MultipartFetchMasterLocation {
|
|
case generic(Int32, (TelegramMediaResource, MediaResourceReference?, Data?) -> MultipartFetchGenericLocationResult)
|
|
case web(Int32, Api.InputWebFileLocation)
|
|
|
|
var datacenterId: Int32 {
|
|
switch self {
|
|
case let .generic(id, _):
|
|
return id
|
|
case let .web(id, _):
|
|
return id
|
|
}
|
|
}
|
|
}
|
|
|
|
private struct DownloadWrapper {
|
|
let consumerId: Int64
|
|
let resourceId: String?
|
|
let datacenterId: Int32
|
|
let isCdn: Bool
|
|
let network: Network
|
|
let useMainConnection: Bool
|
|
|
|
init(
|
|
consumerId: Int64,
|
|
resourceId: String?,
|
|
datacenterId: Int32,
|
|
isCdn: Bool,
|
|
network: Network,
|
|
useMainConnection: Bool
|
|
) {
|
|
self.consumerId = consumerId
|
|
self.resourceId = resourceId
|
|
self.datacenterId = datacenterId
|
|
self.isCdn = isCdn
|
|
self.network = network
|
|
self.useMainConnection = useMainConnection
|
|
}
|
|
|
|
func request<T>(_ data: (FunctionDescription, Buffer, DeserializeFunctionResponse<T>), tag: MediaResourceFetchTag?, continueInBackground: Bool) -> Signal<(T, NetworkResponseInfo), MTRpcError> {
|
|
let target: MultiplexedRequestTarget
|
|
if self.isCdn {
|
|
target = .cdn(Int(self.datacenterId))
|
|
} else {
|
|
target = .main(Int(self.datacenterId))
|
|
}
|
|
return network.multiplexedRequestManager.requestWithAdditionalInfo(to: target, consumerId: self.consumerId, resourceId: self.resourceId, data: data, tag: tag, continueInBackground: continueInBackground)
|
|
|> mapError { error, _ -> MTRpcError in
|
|
return error
|
|
}
|
|
}
|
|
}
|
|
|
|
private func roundUp(_ value: Int64, to multiple: Int64) -> Int64 {
|
|
if multiple == 0 {
|
|
return value
|
|
}
|
|
|
|
let remainder = value % multiple
|
|
if remainder == 0 {
|
|
return value
|
|
}
|
|
|
|
return value + multiple - remainder
|
|
}
|
|
|
|
private let dataHashLength: Int64 = 128 * 1024
|
|
|
|
private final class MultipartCdnHashSource {
|
|
private final class ClusterContext {
|
|
final class Subscriber {
|
|
let completion: ([Int64: Data]) -> Void
|
|
let error: (MultipartFetchDownloadError) -> Void
|
|
|
|
init(completion: @escaping ([Int64: Data]) -> Void, error: @escaping (MultipartFetchDownloadError) -> Void) {
|
|
self.completion = completion
|
|
self.error = error
|
|
}
|
|
}
|
|
|
|
let disposable: Disposable
|
|
let subscribers = Bag<Subscriber>()
|
|
|
|
var result: [Int64: Data]?
|
|
var error: MultipartFetchDownloadError?
|
|
|
|
init(disposable: Disposable) {
|
|
self.disposable = disposable
|
|
}
|
|
|
|
deinit {
|
|
self.disposable.dispose()
|
|
}
|
|
}
|
|
|
|
private let queue: Queue
|
|
|
|
private let fileToken: Data
|
|
private let masterDownload: DownloadWrapper
|
|
private let continueInBackground: Bool
|
|
|
|
private var clusterContexts: [Int64: ClusterContext] = [:]
|
|
|
|
init(queue: Queue, fileToken: Data, hashes: [Int64: Data], masterDownload: DownloadWrapper, continueInBackground: Bool) {
|
|
assert(queue.isCurrent())
|
|
|
|
self.queue = queue
|
|
self.fileToken = fileToken
|
|
self.masterDownload = masterDownload
|
|
self.continueInBackground = continueInBackground
|
|
}
|
|
|
|
deinit {
|
|
assert(self.queue.isCurrent())
|
|
}
|
|
|
|
func getCluster(offset: Int64, completion: @escaping ([Int64: Data]) -> Void, error: @escaping (MultipartFetchDownloadError) -> Void) -> Disposable {
|
|
precondition(offset % (1 * 1024 * 1024) == 0)
|
|
|
|
let clusterContext: ClusterContext
|
|
if let current = self.clusterContexts[offset] {
|
|
clusterContext = current
|
|
} else {
|
|
let disposable = MetaDisposable()
|
|
clusterContext = ClusterContext(disposable: disposable)
|
|
self.clusterContexts[offset] = clusterContext
|
|
|
|
disposable.set((self.masterDownload.request(Api.functions.upload.getCdnFileHashes(fileToken: Buffer(data: self.fileToken), offset: offset), tag: nil, continueInBackground: self.continueInBackground)
|
|
|> map { partHashes, _ -> [Int64: Data] in
|
|
var parsedPartHashes: [Int64: Data] = [:]
|
|
for part in partHashes {
|
|
switch part {
|
|
case let .fileHash(offset, limit, bytes):
|
|
assert(limit == 128 * 1024)
|
|
parsedPartHashes[offset] = bytes.makeData()
|
|
}
|
|
}
|
|
return parsedPartHashes
|
|
}
|
|
|> deliverOn(self.queue)).start(next: { [weak self, weak clusterContext] result in
|
|
guard let _ = self, let clusterContext = clusterContext else {
|
|
return
|
|
}
|
|
clusterContext.result = result
|
|
for subscriber in clusterContext.subscribers.copyItems() {
|
|
subscriber.completion(result)
|
|
}
|
|
}, error: { [weak self, weak clusterContext] _ in
|
|
guard let _ = self, let clusterContext = clusterContext else {
|
|
return
|
|
}
|
|
clusterContext.error = .generic
|
|
for subscriber in clusterContext.subscribers.copyItems() {
|
|
subscriber.error(.generic)
|
|
}
|
|
}))
|
|
}
|
|
|
|
if let result = clusterContext.result {
|
|
completion(result)
|
|
|
|
return EmptyDisposable
|
|
} else if let errorValue = clusterContext.error {
|
|
error(errorValue)
|
|
|
|
return EmptyDisposable
|
|
} else {
|
|
let index = clusterContext.subscribers.add(ClusterContext.Subscriber(completion: completion, error: error))
|
|
let queue = self.queue
|
|
return ActionDisposable { [weak self, weak clusterContext] in
|
|
queue.async {
|
|
guard let strongSelf = self, let clusterContext = clusterContext else {
|
|
return
|
|
}
|
|
clusterContext.subscribers.remove(index)
|
|
if clusterContext.subscribers.isEmpty {
|
|
if strongSelf.clusterContexts[offset] === clusterContext {
|
|
strongSelf.clusterContexts.removeValue(forKey: offset)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
private func cluster(offset: Int64) -> Signal<[Int64: Data], MultipartFetchDownloadError> {
|
|
let queue = self.queue
|
|
return Signal { [weak self] subscriber in
|
|
let disposable = MetaDisposable()
|
|
|
|
queue.async {
|
|
guard let strongSelf = self else {
|
|
subscriber.putError(.generic)
|
|
return
|
|
}
|
|
|
|
disposable.set(strongSelf.getCluster(offset: offset, completion: { result in
|
|
subscriber.putNext(result)
|
|
subscriber.putCompletion()
|
|
}, error: { error in
|
|
subscriber.putError(error)
|
|
}))
|
|
}
|
|
|
|
return disposable
|
|
}
|
|
}
|
|
|
|
func get(offset: Int64, limit: Int64) -> Signal<[Int64: Data], MultipartFetchDownloadError> {
|
|
precondition(offset % dataHashLength == 0)
|
|
precondition((offset + limit) % dataHashLength == 0)
|
|
|
|
var clusterOffsets = Set<Int64>()
|
|
for partOffset in stride(from: offset, to: offset + limit, by: Int(dataHashLength)) {
|
|
clusterOffsets.insert(partOffset - (partOffset % (1 * 1024 * 1024)))
|
|
}
|
|
|
|
return combineLatest(clusterOffsets.map { clusterOffset in
|
|
return self.cluster(offset: clusterOffset)
|
|
})
|
|
|> mapToSignal { clusterResults -> Signal<[Int64: Data], MultipartFetchDownloadError> in
|
|
var result: [Int64: Data] = [:]
|
|
|
|
for partOffset in stride(from: offset, to: offset + limit, by: Int64.Stride(dataHashLength)) {
|
|
var found = false
|
|
for cluster in clusterResults {
|
|
if let data = cluster[partOffset] {
|
|
result[partOffset] = data
|
|
found = true
|
|
}
|
|
}
|
|
if !found {
|
|
return .fail(.generic)
|
|
}
|
|
}
|
|
|
|
return .single(result)
|
|
}
|
|
}
|
|
}
|
|
|
|
private enum MultipartFetchSource {
|
|
case none
|
|
case master(location: MultipartFetchMasterLocation, download: DownloadWrapper)
|
|
case cdn(masterDatacenterId: Int32, cdnDatacenterId: Int32, fileToken: Data, key: Data, iv: Data, download: DownloadWrapper, masterDownload: DownloadWrapper, hashSource: MultipartCdnHashSource)
|
|
|
|
var effectiveDatacenterId: Int32 {
|
|
switch self {
|
|
case .none:
|
|
return 0
|
|
case let .master(location, _):
|
|
return location.datacenterId
|
|
case let .cdn(_, cdnDatacenterId, _, _, _, _, _, _):
|
|
return cdnDatacenterId
|
|
}
|
|
}
|
|
|
|
func request(offset: Int64, limit: Int64, tag: MediaResourceFetchTag?, resource: TelegramMediaResource, resourceReference: FetchResourceReference, fileReference: Data?, continueInBackground: Bool) -> Signal<(Data, NetworkResponseInfo), MultipartFetchDownloadError> {
|
|
var resourceReferenceValue: MediaResourceReference?
|
|
switch resourceReference {
|
|
case .forceRevalidate:
|
|
return .fail(.revalidateMediaReference)
|
|
case .empty:
|
|
resourceReferenceValue = nil
|
|
case let .reference(value):
|
|
resourceReferenceValue = value
|
|
}
|
|
|
|
switch self {
|
|
case .none:
|
|
return .never()
|
|
case let .master(location, download):
|
|
assert(limit % 4096 == 0)
|
|
assert(1048576 % limit == 0)
|
|
|
|
switch location {
|
|
case let .generic(_, location):
|
|
switch location(resource, resourceReferenceValue, fileReference) {
|
|
case .none:
|
|
return .fail(.revalidateMediaReference)
|
|
case .revalidate:
|
|
return .fail(.revalidateMediaReference)
|
|
case let .location(parsedLocation):
|
|
return download.request(Api.functions.upload.getFile(flags: 0, location: parsedLocation, offset: offset, limit: Int32(limit)), tag: tag, continueInBackground: continueInBackground)
|
|
|> mapError { error -> MultipartFetchDownloadError in
|
|
if error.errorDescription.hasPrefix("FILEREF_INVALID") || error.errorDescription.hasPrefix("FILE_REFERENCE_") {
|
|
return .revalidateMediaReference
|
|
}
|
|
return .generic
|
|
}
|
|
|> mapToSignal { result, info -> Signal<(Data, NetworkResponseInfo), MultipartFetchDownloadError> in
|
|
switch result {
|
|
case let .file(_, _, bytes):
|
|
var resultData = bytes.makeData()
|
|
if resultData.count > Int(limit) {
|
|
resultData.count = Int(limit)
|
|
}
|
|
return .single((resultData, info))
|
|
case let .fileCdnRedirect(dcId, fileToken, encryptionKey, encryptionIv, partHashes):
|
|
var parsedPartHashes: [Int64: Data] = [:]
|
|
for part in partHashes {
|
|
switch part {
|
|
case let .fileHash(offset, limit, bytes):
|
|
assert(limit == 128 * 1024)
|
|
parsedPartHashes[offset] = bytes.makeData()
|
|
}
|
|
}
|
|
parsedPartHashes.removeAll()
|
|
return .fail(.switchToCdn(id: dcId, token: fileToken.makeData(), key: encryptionKey.makeData(), iv: encryptionIv.makeData(), partHashes: parsedPartHashes))
|
|
}
|
|
}
|
|
}
|
|
case let .web(_, location):
|
|
return download.request(Api.functions.upload.getWebFile(location: location, offset: Int32(offset), limit: Int32(limit)), tag: tag, continueInBackground: continueInBackground)
|
|
|> mapError { error -> MultipartFetchDownloadError in
|
|
return .fatal
|
|
}
|
|
|> mapToSignal { result, info -> Signal<(Data, NetworkResponseInfo), MultipartFetchDownloadError> in
|
|
switch result {
|
|
case let .webFile(_, _, _, _, bytes):
|
|
var resultData = bytes.makeData()
|
|
if resultData.count > Int(limit) {
|
|
resultData.count = Int(limit)
|
|
}
|
|
return .single((resultData, info))
|
|
}
|
|
}
|
|
}
|
|
case let .cdn(masterDatacenterId, _, fileToken, key, iv, download, _, hashSource):
|
|
var updatedLength = roundUp(Int64(limit), to: 4096)
|
|
while updatedLength % 4096 != 0 || 1048576 % updatedLength != 0 {
|
|
updatedLength += 1
|
|
}
|
|
|
|
let part = download.request(Api.functions.upload.getCdnFile(fileToken: Buffer(data: fileToken), offset: offset, limit: Int32(updatedLength)), tag: nil, continueInBackground: continueInBackground)
|
|
|> mapError { _ -> MultipartFetchDownloadError in
|
|
return .generic
|
|
}
|
|
|> mapToSignal { result, info -> Signal<(Data, NetworkResponseInfo), MultipartFetchDownloadError> in
|
|
switch result {
|
|
case let .cdnFileReuploadNeeded(token):
|
|
return .fail(.reuploadToCdn(masterDatacenterId: masterDatacenterId, token: token.makeData()))
|
|
case let .cdnFile(bytes):
|
|
if bytes.size == 0 {
|
|
return .single((bytes.makeData(), info))
|
|
} else {
|
|
var partIv = iv
|
|
let partIvCount = partIv.count
|
|
partIv.withUnsafeMutableBytes { rawBytes -> Void in
|
|
let bytes = rawBytes.baseAddress!.assumingMemoryBound(to: UInt8.self)
|
|
var ivOffset: Int32 = Int32(clamping: (offset / 16)).bigEndian
|
|
memcpy(bytes.advanced(by: partIvCount - 4), &ivOffset, 4)
|
|
}
|
|
return .single((MTAesCtrDecrypt(bytes.makeData(), key, partIv)!, info))
|
|
}
|
|
}
|
|
}
|
|
|
|
return combineLatest(part, hashSource.get(offset: offset, limit: limit))
|
|
|> mapToSignal { partDataAndInfo, hashData -> Signal<(Data, NetworkResponseInfo), MultipartFetchDownloadError> in
|
|
let (partData, info) = partDataAndInfo
|
|
var localOffset: Int64 = 0
|
|
while localOffset < partData.count {
|
|
let dataToHash = partData.subdata(in: Int(localOffset) ..< min(partData.count, Int(localOffset + Int64(dataHashLength))))
|
|
if let hash = hashData[offset + localOffset] {
|
|
let localHash = MTSha256(dataToHash)
|
|
if localHash != hash {
|
|
return .fail(.generic)
|
|
}
|
|
} else {
|
|
return .fail(.generic)
|
|
}
|
|
|
|
localOffset += Int64(dataHashLength)
|
|
}
|
|
return .single((partData, info))
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
private enum FetchResourceReference {
|
|
case empty
|
|
case forceRevalidate
|
|
case reference(MediaResourceReference)
|
|
}
|
|
|
|
private final class MultipartFetchManager {
|
|
private struct FetchSpeedRecord {
|
|
var timestamp: Double
|
|
var byteCount: Int
|
|
}
|
|
|
|
private final class FetchingPart {
|
|
let size: Int64
|
|
let disposable: Disposable
|
|
let startTime: Double
|
|
|
|
init(
|
|
size: Int64,
|
|
disposable: Disposable
|
|
) {
|
|
self.size = size
|
|
self.disposable = disposable
|
|
self.startTime = CFAbsoluteTimeGetCurrent()
|
|
}
|
|
}
|
|
|
|
let parallelParts: Int
|
|
let defaultPartSize: Int64
|
|
var partAlignment: Int64 = 4 * 1024
|
|
|
|
var resource: TelegramMediaResource
|
|
var resourceReference: FetchResourceReference
|
|
var fileReference: Data?
|
|
let parameters: MediaResourceFetchParameters?
|
|
let consumerId: Int64
|
|
|
|
let queue = Queue()
|
|
|
|
var currentIntervals: [(Range<Int64>, MediaBoxFetchPriority)]?
|
|
var currentFilledRanges = RangeSet<Int64>()
|
|
|
|
var completeSize: Int64?
|
|
var completeSizeReported = false
|
|
|
|
let accountPeerId: PeerId
|
|
let postbox: Postbox
|
|
let network: Network
|
|
let networkStatsContext: NetworkStatsContext?
|
|
let revalidationContext: MediaReferenceRevalidationContext?
|
|
let continueInBackground: Bool
|
|
let partReady: (Int64, Data) -> Void
|
|
let reportCompleteSize: (Int64) -> Void
|
|
let finishWithError: (MediaResourceDataFetchError) -> Void
|
|
|
|
private let useMainConnection: Bool
|
|
private var source: MultipartFetchSource
|
|
|
|
private var fetchingParts: [Int64: FetchingPart] = [:]
|
|
var nextFetchingPartId = 0
|
|
var fetchedParts: [Int64: (Int64, Data)] = [:]
|
|
var cachedPartHashes: [Int64: Data] = [:]
|
|
|
|
var reuploadingToCdn = false
|
|
let reuploadToCdnDisposable = MetaDisposable()
|
|
|
|
var revalidatedMediaReference = false
|
|
var revalidatingMediaReference = false
|
|
let revalidateMediaReferenceDisposable = MetaDisposable()
|
|
|
|
var state: MultipartDownloadState
|
|
|
|
var rangesDisposable: Disposable?
|
|
|
|
private var speedTimer: SwiftSignalKit.Timer?
|
|
private var fetchSpeedRecords: [FetchSpeedRecord] = []
|
|
private var totalFetchedByteCount: Int = 0
|
|
|
|
init(resource: TelegramMediaResource, parameters: MediaResourceFetchParameters?, size: Int64?, intervals: Signal<[(Range<Int64>, MediaBoxFetchPriority)], NoError>, encryptionKey: SecretFileEncryptionKey?, decryptedSize: Int64?, location: MultipartFetchMasterLocation, accountPeerId: PeerId, postbox: Postbox, network: Network, networkStatsContext: NetworkStatsContext?, revalidationContext: MediaReferenceRevalidationContext?, partReady: @escaping (Int64, Data) -> Void, reportCompleteSize: @escaping (Int64) -> Void, finishWithError: @escaping (MediaResourceDataFetchError) -> Void, useMainConnection: Bool) {
|
|
self.resource = resource
|
|
self.parameters = parameters
|
|
self.consumerId = Int64.random(in: Int64.min ... Int64.max)
|
|
self.useMainConnection = useMainConnection
|
|
|
|
self.completeSize = size
|
|
|
|
var isStory = false
|
|
if let info = parameters?.info as? TelegramCloudMediaResourceFetchInfo {
|
|
switch info.reference {
|
|
case let .media(media, _):
|
|
if case .story = media {
|
|
isStory = true
|
|
}
|
|
default:
|
|
break
|
|
}
|
|
}
|
|
|
|
if isStory {
|
|
self.defaultPartSize = 512 * 1024
|
|
if let size = size, size > self.defaultPartSize {
|
|
self.parallelParts = 4
|
|
} else {
|
|
self.parallelParts = 1
|
|
}
|
|
} else if let size = size {
|
|
if size <= 512 * 1024 {
|
|
self.defaultPartSize = 16 * 1024
|
|
self.parallelParts = 4 * 4
|
|
} else {
|
|
self.defaultPartSize = 512 * 1024
|
|
self.parallelParts = 8
|
|
}
|
|
} else {
|
|
self.parallelParts = 1
|
|
self.defaultPartSize = 128 * 1024
|
|
}
|
|
|
|
if let info = parameters?.info as? TelegramCloudMediaResourceFetchInfo {
|
|
self.fileReference = info.reference.apiFileReference
|
|
self.continueInBackground = info.continueInBackground
|
|
self.resourceReference = .reference(info.reference)
|
|
switch info.reference {
|
|
case let .media(media, _):
|
|
if let file = media.media as? TelegramMediaFile {
|
|
for attribute in file.attributes {
|
|
switch attribute {
|
|
case let .Sticker(_, packReference, _):
|
|
switch packReference {
|
|
case .name?:
|
|
self.resourceReference = .forceRevalidate
|
|
default:
|
|
break
|
|
}
|
|
default:
|
|
break
|
|
}
|
|
}
|
|
}
|
|
default:
|
|
break
|
|
}
|
|
} else {
|
|
self.continueInBackground = false
|
|
self.resourceReference = .empty
|
|
}
|
|
|
|
self.state = MultipartDownloadState(encryptionKey: encryptionKey, decryptedSize: decryptedSize)
|
|
self.accountPeerId = accountPeerId
|
|
self.postbox = postbox
|
|
self.network = network
|
|
self.networkStatsContext = networkStatsContext
|
|
self.revalidationContext = revalidationContext
|
|
self.source = .master(location: location, download: DownloadWrapper(consumerId: self.consumerId, resourceId: self.resource.id.stringRepresentation, datacenterId: location.datacenterId, isCdn: false, network: network, useMainConnection: self.useMainConnection))
|
|
self.partReady = partReady
|
|
self.reportCompleteSize = reportCompleteSize
|
|
self.finishWithError = finishWithError
|
|
|
|
/*if resource.id.stringRepresentation == "telegram-cloud-document-1-4922941873166746479" {
|
|
let tempRanges = Promise<[(Range<Int64>, MediaBoxFetchPriority)]>()
|
|
|
|
tempRanges.set(.single([(0 ..< Int64.max, .default)]))
|
|
Thread(block: {
|
|
for i in 0 ..< 10 {
|
|
Thread.sleep(forTimeInterval: 0.1)
|
|
|
|
var randomSet = RangeSet<Int64>()
|
|
if i % 2 == 0 {
|
|
for _ in 0 ..< 10 {
|
|
let lower: Int64 = Int64.random(in: 0 ..< 4980736 + 131072)
|
|
let upper: Int64 = Int64.random(in: lower ..< (lower + 1234))
|
|
randomSet.insert(contentsOf: lower ..< upper)
|
|
var ranges: [(Range<Int64>, MediaBoxFetchPriority)] = []
|
|
for range in randomSet.ranges {
|
|
ranges.append((range, .default))
|
|
}
|
|
tempRanges.set(.single(ranges))
|
|
}
|
|
}
|
|
}
|
|
|
|
Thread.sleep(forTimeInterval: 0.1)
|
|
tempRanges.set(.single([]))
|
|
|
|
Thread.sleep(forTimeInterval: 5.0)
|
|
tempRanges.set(.single([(0 ..< Int64.max, .default)]))
|
|
}).start()
|
|
|
|
self.rangesDisposable = (tempRanges.get()
|
|
|> deliverOn(self.queue)).start(next: { [weak self] intervals in
|
|
if let strongSelf = self {
|
|
if let _ = strongSelf.currentIntervals {
|
|
strongSelf.currentIntervals = intervals
|
|
strongSelf.checkState()
|
|
} else {
|
|
strongSelf.currentIntervals = intervals
|
|
strongSelf.checkState()
|
|
}
|
|
}
|
|
})
|
|
} else {*/
|
|
self.rangesDisposable = (intervals
|
|
|> deliverOn(self.queue)).start(next: { [weak self] intervals in
|
|
if let strongSelf = self {
|
|
if let _ = strongSelf.currentIntervals {
|
|
strongSelf.currentIntervals = intervals
|
|
strongSelf.checkState()
|
|
} else {
|
|
strongSelf.currentIntervals = intervals
|
|
strongSelf.checkState()
|
|
}
|
|
}
|
|
})
|
|
//}
|
|
|
|
/*self.markSpeedRecord()
|
|
self.speedTimer = SwiftSignalKit.Timer(timeout: 1.0, repeat: true, completion: { [weak self] in
|
|
self?.markSpeedRecord()
|
|
}, queue: self.queue)
|
|
self.speedTimer?.start()*/
|
|
}
|
|
|
|
deinit {
|
|
let rangesDisposable = self.rangesDisposable
|
|
self.queue.async {
|
|
rangesDisposable?.dispose()
|
|
}
|
|
self.speedTimer?.invalidate()
|
|
}
|
|
|
|
func start() {
|
|
self.queue.async {
|
|
self.checkState()
|
|
}
|
|
}
|
|
|
|
func cancel() {
|
|
self.queue.async {
|
|
self.source = .none
|
|
for (_, fetchingPart) in self.fetchingParts {
|
|
fetchingPart.disposable.dispose()
|
|
}
|
|
self.reuploadToCdnDisposable.dispose()
|
|
self.revalidateMediaReferenceDisposable.dispose()
|
|
}
|
|
}
|
|
|
|
private func addSpeedRecord(byteCount: Int) {
|
|
self.totalFetchedByteCount += byteCount
|
|
}
|
|
|
|
private func markSpeedRecord() {
|
|
self.fetchSpeedRecords.append(FetchSpeedRecord(timestamp: CFAbsoluteTimeGetCurrent(), byteCount: self.totalFetchedByteCount))
|
|
if self.fetchSpeedRecords.count > 10 {
|
|
self.fetchSpeedRecords.removeFirst(self.fetchSpeedRecords.count - 10)
|
|
}
|
|
|
|
if !self.fetchSpeedRecords.isEmpty {
|
|
let totalByteCount = self.fetchSpeedRecords[self.fetchSpeedRecords.count - 1].byteCount - self.fetchSpeedRecords[0].byteCount
|
|
let totalTime = self.fetchSpeedRecords[self.fetchSpeedRecords.count - 1].timestamp - self.fetchSpeedRecords[0].timestamp
|
|
|
|
if totalTime > 0.0 {
|
|
let speed = Double(totalByteCount) / totalTime
|
|
Logger.shared.log("MultipartFetch", "\(self.resource.id.stringRepresentation) \(speed) bytes/s")
|
|
|
|
#if DEBUG
|
|
self.checkState()
|
|
#endif
|
|
}
|
|
}
|
|
}
|
|
|
|
func checkState() {
|
|
guard let currentIntervals = self.currentIntervals else {
|
|
return
|
|
}
|
|
|
|
var removeFromFetchIntervals = self.currentFilledRanges
|
|
|
|
let isSingleContiguousRange = currentIntervals.count == 1
|
|
for offset in self.fetchedParts.keys.sorted() {
|
|
if let (_, data) = self.fetchedParts[offset] {
|
|
let partRange = offset ..< (offset + Int64(data.count))
|
|
removeFromFetchIntervals.formUnion(RangeSet<Int64>(partRange))
|
|
|
|
var hasEarlierFetchingPart = false
|
|
if isSingleContiguousRange {
|
|
inner: for key in self.fetchingParts.keys {
|
|
if key < offset {
|
|
hasEarlierFetchingPart = true
|
|
break inner
|
|
}
|
|
}
|
|
}
|
|
|
|
if !hasEarlierFetchingPart {
|
|
self.currentFilledRanges.formUnion(RangeSet<Int64>(partRange))
|
|
self.fetchedParts.removeValue(forKey: offset)
|
|
|
|
self.addSpeedRecord(byteCount: Int(partRange.upperBound - partRange.lowerBound))
|
|
|
|
self.partReady(offset, self.state.transform(offset: offset, data: data))
|
|
}
|
|
}
|
|
}
|
|
|
|
for (offset, fetchingPart) in self.fetchingParts {
|
|
removeFromFetchIntervals.formUnion(RangeSet<Int64>(offset ..< (offset + fetchingPart.size)))
|
|
}
|
|
|
|
if let completeSize = self.completeSize {
|
|
self.currentFilledRanges.formUnion(RangeSet<Int64>(completeSize ..< Int64.max))
|
|
removeFromFetchIntervals.formUnion(RangeSet<Int64>(completeSize ..< Int64.max))
|
|
}
|
|
|
|
var intervalsToFetch: [(Range<Int64>, MediaBoxFetchPriority)] = []
|
|
for (interval, priority) in currentIntervals {
|
|
var intervalIndexSet = RangeSet<Int64>(interval)
|
|
intervalIndexSet.subtract(removeFromFetchIntervals)
|
|
for cleanInterval in intervalIndexSet.ranges {
|
|
assert(!cleanInterval.isEmpty)
|
|
intervalsToFetch.append((Int64(cleanInterval.lowerBound) ..< Int64(cleanInterval.upperBound), priority))
|
|
}
|
|
}
|
|
|
|
if let completeSize = self.completeSize {
|
|
if intervalsToFetch.isEmpty && self.fetchingParts.isEmpty && !self.completeSizeReported {
|
|
self.completeSizeReported = true
|
|
assert(self.fetchedParts.isEmpty)
|
|
if let decryptedSize = self.state.decryptedSize {
|
|
self.reportCompleteSize(decryptedSize)
|
|
} else {
|
|
self.reportCompleteSize(completeSize)
|
|
}
|
|
}
|
|
}
|
|
|
|
while !intervalsToFetch.isEmpty && self.fetchingParts.count < self.parallelParts && !self.reuploadingToCdn && !self.revalidatingMediaReference {
|
|
|
|
var indicesByPriority: [MediaBoxFetchPriority: [Int]] = [:]
|
|
for i in 0 ..< intervalsToFetch.count {
|
|
if indicesByPriority[intervalsToFetch[i].1] == nil {
|
|
indicesByPriority[intervalsToFetch[i].1] = []
|
|
}
|
|
indicesByPriority[intervalsToFetch[i].1]!.append(i)
|
|
}
|
|
|
|
let currentIntervalIndex: Int
|
|
if let maxIndices = indicesByPriority[.maximum], !maxIndices.isEmpty {
|
|
currentIntervalIndex = maxIndices[self.nextFetchingPartId % maxIndices.count]
|
|
} else if let elevatedIndices = indicesByPriority[.elevated], !elevatedIndices.isEmpty {
|
|
currentIntervalIndex = elevatedIndices[self.nextFetchingPartId % elevatedIndices.count]
|
|
} else {
|
|
currentIntervalIndex = self.nextFetchingPartId % intervalsToFetch.count
|
|
}
|
|
self.nextFetchingPartId += 1
|
|
let (firstInterval, priority) = intervalsToFetch[currentIntervalIndex]
|
|
var downloadRange: Range<Int64> = firstInterval.lowerBound ..< min(firstInterval.lowerBound + self.defaultPartSize, firstInterval.upperBound)
|
|
let rawRange: Range<Int64> = downloadRange
|
|
if downloadRange.lowerBound % self.partAlignment != 0 {
|
|
let previousBoundary = (downloadRange.lowerBound / self.partAlignment) * self.partAlignment
|
|
downloadRange = previousBoundary ..< downloadRange.upperBound
|
|
}
|
|
if downloadRange.upperBound % self.partAlignment != 0 {
|
|
let nextBoundary = (downloadRange.upperBound / self.partAlignment + 1) * self.partAlignment
|
|
downloadRange = downloadRange.lowerBound ..< nextBoundary
|
|
}
|
|
if downloadRange.lowerBound / (1024 * 1024) != (downloadRange.upperBound - 1) / (1024 * 1024) {
|
|
let nextBoundary = (downloadRange.lowerBound / (1024 * 1024) + 1) * (1024 * 1024)
|
|
downloadRange = downloadRange.lowerBound ..< nextBoundary
|
|
}
|
|
while 1024 * 1024 % downloadRange.count != 0 {
|
|
downloadRange = downloadRange.lowerBound ..< (downloadRange.upperBound - 1)
|
|
}
|
|
|
|
var intervalIndexSet = RangeSet<Int64>(intervalsToFetch[currentIntervalIndex].0)
|
|
intervalIndexSet.remove(contentsOf: downloadRange)
|
|
intervalsToFetch.remove(at: currentIntervalIndex)
|
|
var insertIndex = currentIntervalIndex
|
|
for interval in intervalIndexSet.ranges {
|
|
intervalsToFetch.insert((interval, priority), at: insertIndex)
|
|
insertIndex += 1
|
|
}
|
|
|
|
let partSize: Int32 = Int32(downloadRange.upperBound - downloadRange.lowerBound)
|
|
let part = self.source.request(offset: downloadRange.lowerBound, limit: downloadRange.upperBound - downloadRange.lowerBound, tag: self.parameters?.tag, resource: self.resource, resourceReference: self.resourceReference, fileReference: self.fileReference, continueInBackground: self.continueInBackground)
|
|
|> deliverOn(self.queue)
|
|
let partDisposable = MetaDisposable()
|
|
self.fetchingParts[downloadRange.lowerBound] = FetchingPart(size: Int64(downloadRange.count), disposable: partDisposable)
|
|
let partStartTimestamp = CFAbsoluteTimeGetCurrent()
|
|
let effectiveDatacenterId = self.source.effectiveDatacenterId
|
|
partDisposable.set(part.start(next: { [weak self] data, info in
|
|
guard let strongSelf = self else {
|
|
return
|
|
}
|
|
|
|
strongSelf.networkStatsContext?.add(downloadEvents: [
|
|
NetworkStatsContext.DownloadEvent(
|
|
networkType: info.networkType,
|
|
datacenterId: effectiveDatacenterId,
|
|
size: Double(partSize),
|
|
networkDuration: info.networkDuration,
|
|
issueDuration: CFAbsoluteTimeGetCurrent() - partStartTimestamp
|
|
)
|
|
])
|
|
if data.count < downloadRange.count {
|
|
strongSelf.completeSize = downloadRange.lowerBound + Int64(data.count)
|
|
}
|
|
let _ = strongSelf.fetchingParts.removeValue(forKey: downloadRange.lowerBound)
|
|
strongSelf.fetchedParts[downloadRange.lowerBound] = (rawRange.lowerBound, data)
|
|
strongSelf.checkState()
|
|
}, error: { [weak self] error in
|
|
guard let strongSelf = self else {
|
|
return
|
|
}
|
|
let _ = strongSelf.fetchingParts.removeValue(forKey: downloadRange.lowerBound)
|
|
switch error {
|
|
case .generic:
|
|
break
|
|
case .fatal:
|
|
strongSelf.finishWithError(.generic)
|
|
case .revalidateMediaReference:
|
|
if !strongSelf.revalidatingMediaReference && !strongSelf.revalidatedMediaReference {
|
|
strongSelf.revalidatingMediaReference = true
|
|
for (_, part) in strongSelf.fetchingParts {
|
|
part.disposable.dispose()
|
|
}
|
|
strongSelf.fetchingParts.removeAll()
|
|
|
|
if let info = strongSelf.parameters?.info as? TelegramCloudMediaResourceFetchInfo, let revalidationContext = strongSelf.revalidationContext {
|
|
strongSelf.revalidateMediaReferenceDisposable.set((revalidateMediaResourceReference(accountPeerId: strongSelf.accountPeerId, postbox: strongSelf.postbox, network: strongSelf.network, revalidationContext: revalidationContext, info: info, resource: strongSelf.resource)
|
|
|> deliverOn(strongSelf.queue)).start(next: { validationResult in
|
|
if let strongSelf = self {
|
|
strongSelf.revalidatingMediaReference = false
|
|
strongSelf.revalidatedMediaReference = true
|
|
if let validatedResource = validationResult.updatedResource as? TelegramCloudMediaResourceWithFileReference, let reference = validatedResource.fileReference {
|
|
strongSelf.fileReference = reference
|
|
}
|
|
strongSelf.resource = validationResult.updatedResource
|
|
if let reference = validationResult.updatedReference {
|
|
strongSelf.resourceReference = .reference(reference)
|
|
} else {
|
|
strongSelf.resourceReference = .empty
|
|
}
|
|
strongSelf.checkState()
|
|
}
|
|
}, error: { _ in
|
|
}))
|
|
} else {
|
|
Logger.shared.log("MultipartFetch", "reference invalidation requested, but no valid reference given")
|
|
}
|
|
}
|
|
case let .switchToCdn(id, token, key, iv, partHashes):
|
|
switch strongSelf.source {
|
|
case let .master(location, download):
|
|
strongSelf.partAlignment = dataHashLength
|
|
strongSelf.source = .cdn(masterDatacenterId: location.datacenterId, cdnDatacenterId: id, fileToken: token, key: key, iv: iv, download: DownloadWrapper(consumerId: strongSelf.consumerId, resourceId: strongSelf.resource.id.stringRepresentation, datacenterId: id, isCdn: true, network: strongSelf.network, useMainConnection: strongSelf.useMainConnection), masterDownload: download, hashSource: MultipartCdnHashSource(queue: strongSelf.queue, fileToken: token, hashes: partHashes, masterDownload: download, continueInBackground: strongSelf.continueInBackground))
|
|
strongSelf.checkState()
|
|
case .cdn, .none:
|
|
break
|
|
}
|
|
case let .reuploadToCdn(_, token):
|
|
switch strongSelf.source {
|
|
case .master, .none:
|
|
break
|
|
case let .cdn(_, _, fileToken, _, _, _, masterDownload, _):
|
|
if !strongSelf.reuploadingToCdn {
|
|
strongSelf.reuploadingToCdn = true
|
|
let reupload: Signal<[Api.FileHash], NoError> = masterDownload.request(Api.functions.upload.reuploadCdnFile(fileToken: Buffer(data: fileToken), requestToken: Buffer(data: token)), tag: nil, continueInBackground: strongSelf.continueInBackground)
|
|
|> map { result, _ -> [Api.FileHash] in
|
|
return result
|
|
}
|
|
|> `catch` { _ -> Signal<[Api.FileHash], NoError> in
|
|
return .single([])
|
|
}
|
|
strongSelf.reuploadToCdnDisposable.set((reupload |> deliverOn(strongSelf.queue)).start(next: { _ in
|
|
if let strongSelf = self {
|
|
strongSelf.reuploadingToCdn = false
|
|
strongSelf.checkState()
|
|
}
|
|
}))
|
|
}
|
|
}
|
|
case .hashesMissing:
|
|
break
|
|
}
|
|
}))
|
|
}
|
|
}
|
|
}
|
|
|
|
public func standaloneMultipartFetch(accountPeerId: PeerId, postbox: Postbox, network: Network, resource: TelegramMediaResource, datacenterId: Int, size: Int64?, intervals: Signal<[(Range<Int64>, MediaBoxFetchPriority)], NoError>, parameters: MediaResourceFetchParameters?, encryptionKey: SecretFileEncryptionKey? = nil, decryptedSize: Int32? = nil, continueInBackground: Bool = false, useMainConnection: Bool = false) -> Signal<MediaResourceDataFetchResult, MediaResourceDataFetchError> {
|
|
return multipartFetch(
|
|
accountPeerId: accountPeerId,
|
|
postbox: postbox,
|
|
network: network,
|
|
mediaReferenceRevalidationContext: nil,
|
|
networkStatsContext: nil,
|
|
resource: resource,
|
|
datacenterId: datacenterId,
|
|
size: size,
|
|
intervals: intervals,
|
|
parameters: parameters,
|
|
useMainConnection: useMainConnection
|
|
)
|
|
}
|
|
|
|
public func resourceFetchInfo(resource: TelegramMediaResource) -> MediaResourceFetchInfo? {
|
|
return TelegramCloudMediaResourceFetchInfo(
|
|
reference: MediaResourceReference.standalone(resource: resource),
|
|
preferBackgroundReferenceRevalidation: false,
|
|
continueInBackground: false
|
|
)
|
|
}
|
|
|
|
public func resourceFetchInfo(reference: MediaResourceReference) -> MediaResourceFetchInfo? {
|
|
return TelegramCloudMediaResourceFetchInfo(
|
|
reference: reference,
|
|
preferBackgroundReferenceRevalidation: false,
|
|
continueInBackground: false
|
|
)
|
|
}
|
|
|
|
private func multipartFetchV1(
|
|
accountPeerId: PeerId,
|
|
postbox: Postbox,
|
|
network: Network,
|
|
mediaReferenceRevalidationContext: MediaReferenceRevalidationContext?,
|
|
networkStatsContext: NetworkStatsContext?,
|
|
resource: TelegramMediaResource,
|
|
datacenterId: Int,
|
|
size: Int64?,
|
|
intervals: Signal<[(Range<Int64>, MediaBoxFetchPriority)], NoError>,
|
|
parameters: MediaResourceFetchParameters?,
|
|
encryptionKey: SecretFileEncryptionKey? = nil,
|
|
decryptedSize: Int64? = nil,
|
|
continueInBackground: Bool = false,
|
|
useMainConnection: Bool = false
|
|
) -> Signal<MediaResourceDataFetchResult, MediaResourceDataFetchError> {
|
|
return Signal { subscriber in
|
|
let location: MultipartFetchMasterLocation
|
|
if let resource = resource as? MediaResourceWithWebFileReference {
|
|
location = .web(Int32(datacenterId), resource.apiInputLocation)
|
|
} else {
|
|
location = .generic(Int32(datacenterId), { resource, resourceReference, fileReference in
|
|
if let resource = resource as? TelegramCloudMediaResource {
|
|
if let location = resource.apiInputLocation(fileReference: fileReference) {
|
|
return .location(location)
|
|
} else {
|
|
return .none
|
|
}
|
|
} else if let resource = resource as? CloudPeerPhotoSizeMediaResource {
|
|
guard let info = parameters?.info as? TelegramCloudMediaResourceFetchInfo else {
|
|
return .none
|
|
}
|
|
switch resourceReference ?? info.reference {
|
|
case let .avatar(peer, _):
|
|
if let location = resource.apiInputLocation(peerReference: peer) {
|
|
return .location(location)
|
|
} else {
|
|
return .revalidate
|
|
}
|
|
case let .messageAuthorAvatar(message, _):
|
|
if let peer = message.author {
|
|
if let location = resource.apiInputLocation(peerReference: peer) {
|
|
return .location(location)
|
|
}
|
|
}
|
|
return .revalidate
|
|
default:
|
|
return .none
|
|
}
|
|
} else if let resource = resource as? CloudStickerPackThumbnailMediaResource {
|
|
guard let info = parameters?.info as? TelegramCloudMediaResourceFetchInfo else {
|
|
return .none
|
|
}
|
|
switch info.reference {
|
|
case let .stickerPackThumbnail(stickerPack, _):
|
|
if let location = resource.apiInputLocation(packReference: stickerPack) {
|
|
return .location(location)
|
|
} else {
|
|
return .revalidate
|
|
}
|
|
default:
|
|
return .none
|
|
}
|
|
} else {
|
|
return .none
|
|
}
|
|
})
|
|
}
|
|
|
|
if encryptionKey != nil {
|
|
subscriber.putNext(.reset)
|
|
}
|
|
|
|
let manager = MultipartFetchManager(resource: resource, parameters: parameters, size: size, intervals: intervals, encryptionKey: encryptionKey, decryptedSize: decryptedSize, location: location, accountPeerId: accountPeerId, postbox: postbox, network: network, networkStatsContext: networkStatsContext, revalidationContext: mediaReferenceRevalidationContext, partReady: { dataOffset, data in
|
|
subscriber.putNext(.dataPart(resourceOffset: dataOffset, data: data, range: 0 ..< Int64(data.count), complete: false))
|
|
}, reportCompleteSize: { size in
|
|
subscriber.putNext(.resourceSizeUpdated(size))
|
|
//subscriber.putCompletion()
|
|
}, finishWithError: { error in
|
|
subscriber.putError(error)
|
|
}, useMainConnection: useMainConnection)
|
|
|
|
manager.start()
|
|
|
|
var managerRef: MultipartFetchManager? = manager
|
|
|
|
return ActionDisposable {
|
|
managerRef?.cancel()
|
|
managerRef = nil
|
|
}
|
|
}
|
|
}
|
|
|
|
func multipartFetch(
|
|
accountPeerId: PeerId,
|
|
postbox: Postbox,
|
|
network: Network,
|
|
mediaReferenceRevalidationContext: MediaReferenceRevalidationContext?,
|
|
networkStatsContext: NetworkStatsContext?,
|
|
resource: TelegramMediaResource,
|
|
datacenterId: Int,
|
|
size: Int64?,
|
|
intervals: Signal<[(Range<Int64>, MediaBoxFetchPriority)], NoError>,
|
|
parameters: MediaResourceFetchParameters?,
|
|
encryptionKey: SecretFileEncryptionKey? = nil,
|
|
decryptedSize: Int64? = nil,
|
|
continueInBackground: Bool = false,
|
|
useMainConnection: Bool = false
|
|
) -> Signal<MediaResourceDataFetchResult, MediaResourceDataFetchError> {
|
|
if network.useExperimentalFeatures, let _ = resource as? TelegramCloudMediaResource, !(resource is SecretFileMediaResource) {
|
|
return multipartFetchV2(
|
|
accountPeerId: accountPeerId,
|
|
postbox: postbox,
|
|
network: network,
|
|
mediaReferenceRevalidationContext: mediaReferenceRevalidationContext,
|
|
resource: resource,
|
|
datacenterId: datacenterId,
|
|
size: size,
|
|
intervals: intervals,
|
|
parameters: parameters,
|
|
encryptionKey: encryptionKey,
|
|
decryptedSize: decryptedSize,
|
|
continueInBackground: continueInBackground,
|
|
useMainConnection: useMainConnection
|
|
)
|
|
}
|
|
return multipartFetchV1(
|
|
accountPeerId: accountPeerId,
|
|
postbox: postbox,
|
|
network: network,
|
|
mediaReferenceRevalidationContext: mediaReferenceRevalidationContext,
|
|
networkStatsContext: networkStatsContext,
|
|
resource: resource,
|
|
datacenterId: datacenterId,
|
|
size: size,
|
|
intervals: intervals,
|
|
parameters: parameters,
|
|
encryptionKey: encryptionKey,
|
|
decryptedSize: decryptedSize,
|
|
continueInBackground: continueInBackground,
|
|
useMainConnection: useMainConnection
|
|
)
|
|
}
|