SolanaSwift

Solana-blockchain client, written in pure swift.

Features

• Key pairs generation
• Networking with POST methods for comunicating with solana-based networking system
• Create, sign transactions
• Socket communication // TODO

Example

To run the example project, clone the repo, and run pod install from the Example directory first.

Requirements

• iOS 11 or later
• RxSwift

Dependencies

• RxAlamofire
• TweetNacl
• CryptoSwift
• Socket-io client // TODO

Installation

SolanaSwift is available through CocoaPods. To install it, simply add the following line to your Podfile:

pod 'SolanaSwift', :git => 'https://github.com/p2p-org/solana-swift.git'

How to use

• Every class or struct is defined within namespace SolanaSDK, for example: SolanaSDK.Account, SolanaSDK.Error.

• Import

import SolanaSwift

• Create an AccountStorage for saving account's keyPairs (public and private key), for example: KeychainAccountStorage for saving into Keychain in production, or InMemoryAccountStorage for temporarily saving into memory for testing. The AccountStorage must conform to protocol SolanaSDKAccountStorage, which has 2 requirements: function for saving save(_ account:) throws and computed property account: SolanaSDK.Account? for retrieving user's account.

Example:

import KeychainSwift
struct KeychainAccountStorage: SolanaSDKAccountStorage {
    let tokenKey = <YOUR_KEY_TO_STORE_IN_KEYCHAIN>
    func save(_ account: SolanaSDK.Account) throws {
        let data = try JSONEncoder().encode(account)
        keychain.set(data, forKey: tokenKey)
    }
    
    var account: SolanaSDK.Account? {
        guard let data = keychain.getData(tokenKey) else {return nil}
        return try? JSONDecoder().decode(SolanaSDK.Account.self, from: data)
    }
}

struct InMemoryAccountStorage: SolanaSDKAccountStorage {
    private var _account: SolanaSDK.Account?
    func save(_ account: SolanaSDK.Account) throws {
        _account = account
    }
    var account: SolanaSDK.Account? {
        _account
    }
}

• Creating an instance of SolanaSDK:

let solanaSDK = SolanaSDK(endpoint: <YOUR_API_ENDPOINT>, accountStorage: KeychainAccountStorage.shared) // endpoint example: https://api.mainnet-beta.solana.com

• Creating an account:

let mnemonic = Mnemonic()
let account = try SolanaSDK.Account(phrase: mnemonic.phrase)
try solanaSDK.accountStorage.save(account)

• Send pre-defined POST methods, which return a RxSwift.Single. List of predefined methods:

Example:

solanaSDK.getBalance(account: account, commitment: "recent")
    .subscribe(onNext: {balance in
        print(balance)
    })
    .disposed(by: disposeBag)

• Send token with send(to:, amount:) method:

solanaSDK.send(to: <ACCOUNT_PUBLIC_KEY>, amount: <LAMPORTS>)
    .subscribe(onNext: {result in
        print(result)
    })
    .disposed(by: disposeBag)

• Send custom method, which was not defined by using method request<T: Decodable>(method:, path:, bcMethod:, parameters:) -> Single<T>

Example:

(solanaSDK.request(method: .post, bcMethod: "aNewMethodThatReturnsAString", parameters: []) as Single<String>)

• Observe socket events:

// TODO: The socket implementation has not been ready yet.

Contribution

• For supporting new methods, data types, edit SolanaSDK+Methods or SolanaSDK+Models
• For testing, run Example project and creating test using RxBlocking
• Welcome to contribute, feel free to change and open a PR.

Author

Chung Tran, [email protected]

License

SolanaSwift is available under the MIT license. See the LICENSE file for more info.