Class: Coinbase::Wallet

Inherits:
Object
  • Object
show all
Extended by:
Forwardable
Defined in:
lib/coinbase/wallet.rb,
lib/coinbase/wallet/data.rb

Overview

A representation of a Wallet. Wallets come with a single default Address, but can expand to have a set of Addresses, each of which can hold a balance of one or more Assets. Wallets can create new Addresses, list their addresses, list their balances, and transfer Assets to other Addresses.

Defined Under Namespace

Classes: Data

Constant Summary collapse

MAX_ADDRESSES =

The maximum number of addresses in a Wallet.

20

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(model, seed: nil) ⇒ Wallet

Returns a new Wallet object. Do not use this method directly. Instead use Coinbase::Wallet.create.

Raises:

  • (ArgumentError) 


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# File 'lib/coinbase/wallet.rb', line 135

def initialize(model, seed: nil)
  raise ArgumentError, 'model must be a Wallet' unless model.is_a?(Coinbase::Client::Wallet)

  @model = model

  return if Coinbase.use_server_signer?

  @master = master_node(seed)
end

Class Method Details

.create(network: Coinbase.default_network, interval_seconds: 0.2, timeout_seconds: 20) ⇒ Coinbase::Wallet

Creates a new Wallet on the specified Network and generate a default address for it. have an active seed, if using a ServerSigner, in seconds create a seed for the Wallet, in seconds



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# File 'lib/coinbase/wallet.rb', line 66

def create(network: Coinbase.default_network, interval_seconds: 0.2, timeout_seconds: 20)
  model = Coinbase.call_api do
    wallets_api.create_wallet(
      create_wallet_request: {
        wallet: {
          network_id: Coinbase.normalize_network(network),
          use_server_signer: Coinbase.use_server_signer?
        }
      }
    )
  end

  wallet = new(model)

  # When used with a ServerSigner, the Signer must first register
  # with the Wallet before addresses can be created.
  wait_for_signer(wallet.id, interval_seconds, timeout_seconds) if Coinbase.use_server_signer?

  wallet.create_address
  wallet
end

.fetch(wallet_id) ⇒ Coinbase::Wallet

Fetches a Wallet by its ID. The returned wallet can be immediately used for signing operations if backed by a server signer. If the wallet is not backed by a server signer, the wallet’s seed will need to be set before it can be used for signing operations.



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# File 'lib/coinbase/wallet.rb', line 50

def fetch(wallet_id)
  model = Coinbase.call_api do
    wallets_api.get_wallet(wallet_id)
  end

  new(model, seed: '')
end

.import(data) ⇒ Coinbase::Wallet

Imports a Wallet from previously exported wallet data.

Raises:

  • (ArgumentError) 


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# File 'lib/coinbase/wallet.rb', line 24

def import(data)
  raise ArgumentError, 'data must be a Coinbase::Wallet::Data object' unless data.is_a?(Data)

  model = Coinbase.call_api do
    wallets_api.get_wallet(data.wallet_id)
  end

  new(model, seed: data.seed)
end

.list ⇒ Enumerable<Coinbase::Wallet>

Enumerates the wallets for the requesting user. The result is an enumerator that lazily fetches from the server, and can be iterated over, converted to an array, etc…



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# File 'lib/coinbase/wallet.rb', line 38

def list
  Coinbase::Pagination.enumerate(method(:fetch_wallets_page)) do |wallet|
    Coinbase::Wallet.new(wallet, seed: '')
  end
end

Instance Method Details

#address(address_id) ⇒ Address

Returns the Address with the given ID.



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# File 'lib/coinbase/wallet.rb', line 362

def address(address_id)
  addresses.find { |address| address.id == address_id }
end

#addresses ⇒ Array<Coinbase::WalletAddress>

Returns the addresses belonging to the Wallet.



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# File 'lib/coinbase/wallet.rb', line 267

def addresses
  return @addresses unless @addresses.nil?

  set_addresses
end

#balance(asset_id) ⇒ BigDecimal

Returns the balance of the provided Asset. Balances are aggregated across all Addresses in the Wallet.



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# File 'lib/coinbase/wallet.rb', line 379

def balance(asset_id)
  response = Coinbase.call_api do
    wallets_api.get_wallet_balance(id, Coinbase::Asset.primary_denomination(asset_id).to_s)
  end

  return BigDecimal('0') if response.nil?

  Coinbase::Balance.from_model_and_asset_id(response, asset_id).amount
end

#balances ⇒ BalanceMap

Returns the list of balances of this Wallet. Balances are aggregated across all Addresses in the Wallet.



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# File 'lib/coinbase/wallet.rb', line 368

def balances
  response = Coinbase.call_api do
    wallets_api.list_wallet_balances(id)
  end

  Coinbase::BalanceMap.from_balances(response.data)
end

#can_sign? ⇒ Boolean

Returns whether the Wallet has a seed with which to derive keys and sign transactions.



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# File 'lib/coinbase/wallet.rb', line 402

def can_sign?
  !@master.nil?
end

#claim_stake ⇒ Coinbase::StakingOperation

Claims stake of the given amount of the given Asset for the default address.




# File 'lib/coinbase/wallet.rb', line 188

#claimable_balance ⇒ BigDecimal

Retrieves the claimable balance for the supplied asset. Currently only the default_address is used to source the claimable balance.




# File 'lib/coinbase/wallet.rb', line 221

#create_address ⇒ Address

Creates a new Address in the Wallet.



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# File 'lib/coinbase/wallet.rb', line 315

def create_address
  req = {}

  # Ensure that the address cache is set before creating a new address.
  # This ensures that for a server signer, the addresses have been loaded and we
  # can create a new address and add it to a cache.
  set_addresses if @addresses.nil?

  unless Coinbase.use_server_signer?
    # The index for the next address is the number of addresses already registered.
    private_key_index = addresses.count

    key = derive_key(private_key_index)

    req = {
      public_key: key.public_key.compressed.unpack1('H*'),
      attestation: create_attestation(key),
      address_index: private_key_index
    }
  end

  address_model = Coinbase.call_api do
    addresses_api.create_address(id, { create_address_request: req })
  end

  # Default address can be nil because either this is the first address being
  # created for this wallet or the addresses cache has not yet been loaded.

  # If the default address is nil, we must reload the wallet model after creating
  # the address, in order for the default address to be set.
  reload if default_address.nil?

  # The addreses cache is already created, so we can add the new address to the cache.
  address = WalletAddress.new(address_model, key)
  @addresses << address
  address
end

#create_webhook(notification_uri:) ⇒ Coinbase::Client::Webhook

Creates a new webhook on the current wallet for tracking wallet activity events.



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# File 'lib/coinbase/wallet.rb', line 490

def create_webhook(notification_uri:)
  Coinbase.call_api do
    webhooks_api.create_wallet_webhook(
      id,
      create_wallet_webhook_request: {
        notification_uri: notification_uri
      }
    )
  end
end

#default_address ⇒ Address

Returns the default address of the Wallet.



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# File 'lib/coinbase/wallet.rb', line 355

def default_address
  address(@model.default_address&.address_id)
end

#deploy_multi_token ⇒ Coinbase::SmartContract

Deploys a new ERC1155 multi-token contract with the given URI.

Raises:



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# File 'lib/coinbase/wallet.rb', line 261

def_delegators :default_address, :transfer, :trade, :faucet, :stake, :unstake, :claim_stake, :staking_balances,
:stakeable_balance, :unstakeable_balance, :claimable_balance, :sign_payload, :invoke_contract,
:deploy_token, :deploy_nft, :deploy_multi_token

#deploy_nft ⇒ Coinbase::SmartContract

Deploys a new ERC721 NFT contract with the given name, symbol, and base URI.

Raises:




# File 'lib/coinbase/wallet.rb', line 247

#deploy_token ⇒ Coinbase::SmartContract

Deploys a new ERC20 token contract with the given name, symbol, and total supply. whole units.

Raises:




# File 'lib/coinbase/wallet.rb', line 238

#export ⇒ Coinbase::Wallet::Data

Exports the Wallet’s data to a Data object.



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# File 'lib/coinbase/wallet.rb', line 391

def export
  # TODO: Improve this check by relying on the backend data to decide whether a wallet is server-signer backed.
  raise 'Cannot export data for Server-Signer backed Wallet' if Coinbase.use_server_signer?

  raise 'Cannot export Wallet without loaded seed' if @master.nil?

  Data.new(wallet_id: id, seed: @master.seed_hex)
end

#faucet ⇒ Coinbase::FaucetTransaction

Requests funds from the faucet for the Wallet’s default address and returns the faucet transaction. This is only supported on testnet networks.

Raises:




# File 'lib/coinbase/wallet.rb', line 164

#id ⇒ String

Returns the Wallet ID.



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# File 'lib/coinbase/wallet.rb', line 275

def id
  @model.id
end

#inspect ⇒ String

Same as to_s.



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# File 'lib/coinbase/wallet.rb', line 514

def inspect
  to_s
end

#invoke_contract ⇒ Object

Invokes a contract with the given ABI, method, and arguments.




# File 'lib/coinbase/wallet.rb', line 234

#load_seed(file_path) ⇒ String

Loads the seed of the Wallet from the given file.

Raises:

  • (ArgumentError) 


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# File 'lib/coinbase/wallet.rb', line 449

def load_seed(file_path)
  raise 'Wallet already has seed loaded' unless @master.nil?

  existing_seeds_in_store = existing_seeds(file_path)

  raise ArgumentError, "File #{file_path} does not contain seed data" if existing_seeds_in_store == {}

  if existing_seeds_in_store[id].nil?
    raise ArgumentError, "File #{file_path} does not contain seed data for wallet #{id}"
  end

  seed_data = existing_seeds_in_store[id]
  local_seed = seed_data['seed']

  raise ArgumentError, 'Seed data is malformed' if local_seed.nil? || local_seed == ''

  if seed_data['encrypted']
    raise ArgumentError, 'Encrypted seed data is malformed' if seed_data['iv'] == '' ||
                                                               seed_data['auth_tag'] == ''

    cipher = OpenSSL::Cipher.new('aes-256-gcm').decrypt
    cipher.key = OpenSSL::Digest.digest('SHA256', encryption_key)
    iv = [seed_data['iv']].pack('H*')
    cipher.iv = iv
    auth_tag = [seed_data['auth_tag']].pack('H*')
    cipher.auth_tag = auth_tag
    cipher.auth_data = ''
    hex_decoded_data = [seed_data['seed']].pack('H*')
    local_seed = cipher.update(hex_decoded_data) + cipher.final
  end

  self.seed = local_seed

  "Successfully loaded seed for wallet #{id} from #{file_path}."
end

#network ⇒ Coinbase::Network

Returns the Network of the Wallet.



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# File 'lib/coinbase/wallet.rb', line 281

def network
  @network ||= Coinbase::Network.from_id(@model.network_id)
end

#save_seed!(file_path, encrypt: false) ⇒ String

Saves the seed of the Wallet to the given file. Wallets whose seeds are saved this way can be rehydrated using load_seed. A single file can be used for multiple Wallet seeds. This is an insecure method of storing Wallet seeds and should only be used for development purposes.

encrypted or not. Data is unencrypted by default.



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# File 'lib/coinbase/wallet.rb', line 414

def save_seed!(file_path, encrypt: false)
  raise 'Wallet does not have seed loaded' if @master.nil?

  existing_seeds_in_store = existing_seeds(file_path)

  seed_to_store = @master.seed_hex
  auth_tag = ''
  iv = ''
  if encrypt
    cipher = OpenSSL::Cipher.new('aes-256-gcm').encrypt
    cipher.key = OpenSSL::Digest.digest('SHA256', encryption_key)
    iv = cipher.random_iv
    cipher.iv = iv
    cipher.auth_data = ''
    encrypted_data = cipher.update(@master.seed_hex) + cipher.final
    auth_tag = cipher.auth_tag.unpack1('H*')
    iv = iv.unpack1('H*')
    seed_to_store = encrypted_data.unpack1('H*')
  end

  existing_seeds_in_store[id] = {
    seed: seed_to_store,
    encrypted: encrypt,
    auth_tag: auth_tag,
    iv: iv
  }

  File.write(file_path, JSON.pretty_generate(existing_seeds_in_store))

  "Successfully saved seed for wallet #{id} to #{file_path}."
end

#seed=(seed) ⇒ Object

Sets the seed of the Wallet. This seed is used to derive keys and sign transactions.

Raises:

  • (ArgumentError) 


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# File 'lib/coinbase/wallet.rb', line 293

def seed=(seed)
  raise ArgumentError, 'Seed must not be empty' if seed.nil? || seed.empty?
  raise StandardError, 'Seed is already set' unless @master.nil?

  @master = master_node(seed)

  # If the addresses are not loaded the keys will be set on them whenever they are loaded.
  return if @addresses.nil?

  # If addresses are already loaded, set the keys on each address.
  addresses.each_with_index.each do |address, index|
    key = derive_key(index)

    # If we derive a key the derived address must match the address from the API.
    raise StandardError, 'Seed does not match wallet' unless address.id == key.address.to_s

    address.key = key
  end
end

#server_signer_status ⇒ Symbol

Returns the ServerSigner Status of the Wallet.



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# File 'lib/coinbase/wallet.rb', line 287

def server_signer_status
  Coinbase.to_sym(@model.server_signer_status)
end

#sign_payload ⇒ Coinbase::PayloadSignature

Signs the given unsigned payload.




# File 'lib/coinbase/wallet.rb', line 229

#stake ⇒ Coinbase::StakingOperation

Stakes the given amount of the given Asset for the default address.




# File 'lib/coinbase/wallet.rb', line 172

#stakeable_balance ⇒ BigDecimal

Retrieves the stakeable balance of the supplied asset for the default address.




# File 'lib/coinbase/wallet.rb', line 206

#staking_balances ⇒ Hash, BigDecimal

Retrieves the balances used for staking for the supplied asset for the default address.




# File 'lib/coinbase/wallet.rb', line 196

#to_s ⇒ String

Returns a String representation of the Wallet.



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# File 'lib/coinbase/wallet.rb', line 503

def to_s
  Coinbase.pretty_print_object(
    self.class,
    id: id,
    network_id: network.id,
    default_address: @model.default_address&.address_id
  )
end

#trade ⇒ Coinbase::Trade

Trades the specified amount from one asset to another using the default address.




# File 'lib/coinbase/wallet.rb', line 156

#transfer ⇒ Coinbase::Transfer

Transfers the amount of the Asset from the default address to the specified destination. (see Coinbase::Address::WalletAddress#transfer)




# File 'lib/coinbase/wallet.rb', line 145

#unstake ⇒ Coinbase::StakingOperation

Unstakes the given amount of the given Asset on the default address.




# File 'lib/coinbase/wallet.rb', line 180

#unstakeable_balance ⇒ BigDecimal

Retrieves the unstakeable balance for the supplied asset. Currently only the default_address is used to source the unstakeable balance.




# File 'lib/coinbase/wallet.rb', line 213