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Thaler Experimental Network Client (client-core)

This crate provides WalletClient trait which is responsible for interacting with transaction index and provide following functionalities on per-wallet basis:

  • Wallet creation
  • Address generation
  • Balance tracking
  • Transaction history
  • Transaction creation and signing (with automatic unspent transaction selection)

Design

Below is a high level design diagram of this crate:

Client Core Design

WalletClient trait

This trait declares APIs for accessing various functionalities for a wallet:

  • Wallet creation and retrieval: new_wallet() and wallets() functions.
  • Address generation and retrieval: new_address() and addresses() functions.
  • Balance tracking: balance() function.
  • Transaction history: history() function.
  • Transaction creation and signing: create_and_broadcast_transaction() function. This function also handles automatic unspent transaction selection.

Besides above functions, WalletClient also exposes sync() and sync_all() functions which are used to synchronize transaction index with Thaler Experimental Network. This synchronization mechanism is subject to change. Currently, a default implementation (DefaultWalletClient) of WalletClient is provided.

Services

WalletClient exposes a public interface for interacting with a wallet. In order to provide these capabilities, DefaultWallet delegates storage of each type of entity to its own Service. Currently, there are following services:

KeyService

KeyService exposes key related operations (generate and get_keys) on top of any Storage implementation.

  • generate: Generates a new private key for given wallet_id and encrypts it with given passphrase before storing.
  • get_keys: Returns all the keys stored for given wallet_id and decrypts them with given passphrase.

WalletService

WalletService exposes wallet related operations (create and get) on top of any Storage implementation.

  • create: Creates a new wallet and returns wallet_id. This function also encrypts all the data using passphrase before storing it in Storage.
  • get: Retrieves a wallet_id from Storage and decrypts it with given passphrase.

API Documentation

To see this crate's API docs. Run following command from chain directory.

cargo doc --package client-core --no-deps --open