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@ -19,22 +19,24 @@ class OpenSea { |
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//Assuming 1 token (token ID, rather than a token) is 4kb, 1500 HyperDragons is 6MB. So we rate limit requests |
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private static let numberOfTokenIdsBeforeRateLimitingRequests = 25 |
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private static let minimumSecondsBetweenRequests = TimeInterval(60) |
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private static var instances = [RPCServer: WeakRef<OpenSea>]() |
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private let server: RPCServer |
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private static var instances = [AddressAndRPCServer: WeakRef<OpenSea>]() |
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//NOTE: using AddressAndRPCServer fixes issue with incorrect tokens returned from makeFetchPromise |
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// the problem was that cached OpenSea returned tokens from multiple wallets |
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private let key: AddressAndRPCServer |
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private var recentWalletsWithManyTokens = [AlphaWallet.Address: (Date, PromiseResult)]() |
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private var fetch = OpenSea.makeEmptyFulfilledPromise() |
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private let queue = DispatchQueue.global(qos: .userInitiated) |
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private init(server: RPCServer) { |
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self.server = server |
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private init(key: AddressAndRPCServer) { |
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self.key = key |
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} |
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static func createInstance(forServer server: RPCServer) -> OpenSea { |
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if let instance = instances[server]?.object { |
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static func createInstance(with key: AddressAndRPCServer) -> OpenSea { |
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if let instance = instances[key]?.object { |
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return instance |
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} else { |
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let instance = OpenSea(server: server) |
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instances[server] = WeakRef(object: instance) |
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let instance = OpenSea(key: key) |
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instances[key] = WeakRef(object: instance) |
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return instance |
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} |
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} |
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@ -66,12 +68,12 @@ class OpenSea { |
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} |
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///Uses a promise to make sure we don't fetch from OpenSea multiple times concurrently |
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func makeFetchPromise(forOwner owner: AlphaWallet.Address) -> PromiseResult { |
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guard OpenSea.isServerSupported(server) else { |
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func makeFetchPromise() -> PromiseResult { |
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guard OpenSea.isServerSupported(key.server) else { |
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fetch = .value([:]) |
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return fetch |
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} |
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let owner = key.address |
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trimCachedPromises() |
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if let cachedPromise = cachedPromise(forOwner: owner) { |
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return cachedPromise |
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@ -83,6 +85,7 @@ class OpenSea { |
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fetchPage(forOwner: owner, offset: offset) { result in |
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switch result { |
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case .success(let result): |
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seal.fulfill(result) |
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case .failure(let error): |
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seal.reject(error) |
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@ -94,7 +97,7 @@ class OpenSea { |
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} |
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private func getBaseURLForOpensea() -> String { |
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switch server { |
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switch key.server { |
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case .main: |
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return Constants.openseaAPI |
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case .rinkeby: |
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@ -111,75 +114,75 @@ class OpenSea { |
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completion(.failure(AnyError(OpenSeaError(localizedDescription: "Error calling \(baseURL) API \(Thread.isMainThread)")))) |
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return |
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} |
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Alamofire.request( |
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url, |
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method: .get, |
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headers: ["X-API-KEY": Constants.Credentials.openseaKey] |
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).responseJSON { response in |
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).responseJSON(queue: queue, options: .allowFragments, completionHandler: { [weak self] response in |
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guard let strongSelf = self else { return } |
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guard let data = response.data, let json = try? JSON(data: data) else { |
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completion(.failure(AnyError(OpenSeaError(localizedDescription: "Error calling \(baseURL) API: \(String(describing: response.error))")))) |
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return |
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} |
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DispatchQueue.global(qos: .userInitiated).async { |
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var results = sum |
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for (_, each): (String, JSON) in json["assets"] { |
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let type = each["asset_contract"]["schema_name"].stringValue |
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guard let tokenType = NonFungibleFromJsonTokenType(rawString: type) else { continue } |
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let tokenId = each["token_id"].stringValue |
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let contractName = each["asset_contract"]["name"].stringValue |
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//So if it's null in OpenSea, we get a 0, as expected. And 0 works for ERC721 too |
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let decimals = each["decimals"].intValue |
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let symbol = each["asset_contract"]["symbol"].stringValue |
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let name = each["name"].stringValue |
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let description = each["description"].stringValue |
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let thumbnailUrl = each["image_thumbnail_url"].stringValue |
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//We'll get what seems to be the PNG version first, falling back to the sometimes PNG, but sometimes SVG version |
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var imageUrl = each["image_preview_url"].stringValue |
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if imageUrl.isEmpty { |
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imageUrl = each["image_url"].stringValue |
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} |
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let contractImageUrl = each["asset_contract"]["image_url"].stringValue |
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let externalLink = each["external_link"].stringValue |
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let backgroundColor = each["background_color"].stringValue |
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var traits = [OpenSeaNonFungibleTrait]() |
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for each in each["traits"].arrayValue { |
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let traitCount = each["trait_count"].intValue |
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let traitType = each["trait_type"].stringValue |
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let traitValue = each["value"].stringValue |
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let trait = OpenSeaNonFungibleTrait(count: traitCount, type: traitType, value: traitValue) |
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traits.append(trait) |
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} |
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if let contract = AlphaWallet.Address(string: each["asset_contract"]["address"].stringValue) { |
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let cat = OpenSeaNonFungible(tokenId: tokenId, tokenType: tokenType, contractName: contractName, decimals: decimals, symbol: symbol, name: name, description: description, thumbnailUrl: thumbnailUrl, imageUrl: imageUrl, contractImageUrl: contractImageUrl, externalLink: externalLink, backgroundColor: backgroundColor, traits: traits) |
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if var list = results[contract] { |
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list.append(cat) |
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results[contract] = list |
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} else { |
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let list = [cat] |
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results[contract] = list |
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} |
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} |
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var results = sum |
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for (_, each): (String, JSON) in json["assets"] { |
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let type = each["asset_contract"]["schema_name"].stringValue |
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guard let tokenType = NonFungibleFromJsonTokenType(rawString: type) else { continue } |
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let tokenId = each["token_id"].stringValue |
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let contractName = each["asset_contract"]["name"].stringValue |
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//So if it's null in OpenSea, we get a 0, as expected. And 0 works for ERC721 too |
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let decimals = each["decimals"].intValue |
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let symbol = each["asset_contract"]["symbol"].stringValue |
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let name = each["name"].stringValue |
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let description = each["description"].stringValue |
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let thumbnailUrl = each["image_thumbnail_url"].stringValue |
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//We'll get what seems to be the PNG version first, falling back to the sometimes PNG, but sometimes SVG version |
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var imageUrl = each["image_preview_url"].stringValue |
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if imageUrl.isEmpty { |
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imageUrl = each["image_url"].stringValue |
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} |
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let contractImageUrl = each["asset_contract"]["image_url"].stringValue |
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let externalLink = each["external_link"].stringValue |
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let backgroundColor = each["background_color"].stringValue |
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var traits = [OpenSeaNonFungibleTrait]() |
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for each in each["traits"].arrayValue { |
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let traitCount = each["trait_count"].intValue |
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let traitType = each["trait_type"].stringValue |
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let traitValue = each["value"].stringValue |
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let trait = OpenSeaNonFungibleTrait(count: traitCount, type: traitType, value: traitValue) |
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traits.append(trait) |
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} |
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DispatchQueue.main.async { [weak self] in |
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guard let strongSelf = self else { return } |
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let fetchedCount = json["assets"].count |
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if fetchedCount > 0 { |
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strongSelf.fetchPage(forOwner: owner, offset: offset + fetchedCount, sum: results) { results in |
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completion(results) |
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} |
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if let contract = AlphaWallet.Address(string: each["asset_contract"]["address"].stringValue) { |
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let cat = OpenSeaNonFungible(tokenId: tokenId, tokenType: tokenType, contractName: contractName, decimals: decimals, symbol: symbol, name: name, description: description, thumbnailUrl: thumbnailUrl, imageUrl: imageUrl, contractImageUrl: contractImageUrl, externalLink: externalLink, backgroundColor: backgroundColor, traits: traits) |
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if var list = results[contract] { |
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list.append(cat) |
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results[contract] = list |
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} else { |
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//Ignore UEFA from OpenSea, otherwise the token type would be saved wrongly as `.erc721` instead of `.erc721ForTickets` |
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let excludingUefa = sum.filter { !$0.key.isUEFATicketContract } |
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var tokenIdCount = 0 |
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for (_, tokenIds) in excludingUefa { |
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tokenIdCount += tokenIds.count |
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} |
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strongSelf.cachePromise(withTokenIdCount: tokenIdCount, forOwner: owner) |
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completion(.success(excludingUefa)) |
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let list = [cat] |
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results[contract] = list |
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} |
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} |
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} |
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} |
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let fetchedCount = json["assets"].count |
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if fetchedCount > 0 { |
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strongSelf.fetchPage(forOwner: owner, offset: offset + fetchedCount, sum: results) { results in |
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completion(results) |
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} |
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} else { |
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//Ignore UEFA from OpenSea, otherwise the token type would be saved wrongly as `.erc721` instead of `.erc721ForTickets` |
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let excludingUefa = sum.filter { !$0.key.isUEFATicketContract } |
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var tokenIdCount = 0 |
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for (_, tokenIds) in excludingUefa { |
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tokenIdCount += tokenIds.count |
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} |
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strongSelf.cachePromise(withTokenIdCount: tokenIdCount, forOwner: owner) |
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completion(.success(excludingUefa)) |
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} |
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}) |
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} |
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private func cachePromise(withTokenIdCount tokenIdCount: Int, forOwner wallet: AlphaWallet.Address) { |
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Vladyslav shepitko
3 years ago