Class: Coinbase::Asset

Inherits:
Object
  • Object
show all
Defined in:
lib/coinbase/asset.rb

Overview

A representation of an Asset.

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(network:, asset_id:, decimals:, address_id: nil) ⇒ Asset

Returns a new Asset object. Do not use this method. Instead, use the Asset constants defined in the Coinbase module.

Parameters:

  • network (Symbol) —

    The Network or Network ID to which the Asset belongs

  • asset_id (Symbol) —

    The Asset ID

  • address_id (String) (defaults to: nil) —

    (Optional) The Asset’s address ID, if one exists

  • decimals (Integer) —

    (Optional) The number of decimal places the Asset uses



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# File 'lib/coinbase/asset.rb', line 75

def initialize(network:, asset_id:, decimals:, address_id: nil)
  @network = Coinbase::Network.from_id(network)
  @asset_id = asset_id
  @address_id = address_id
  @decimals = decimals
end

Instance Attribute Details

#address_id ⇒ Object (readonly)

Returns the value of attribute address_id.



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# File 'lib/coinbase/asset.rb', line 82

def address_id
  @address_id
end

#asset_id ⇒ Object (readonly)

Returns the value of attribute asset_id.



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# File 'lib/coinbase/asset.rb', line 82

def asset_id
  @asset_id
end

#decimals ⇒ Object (readonly)

Returns the value of attribute decimals.



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# File 'lib/coinbase/asset.rb', line 82

def decimals
  @decimals
end

#network ⇒ Object (readonly)

Returns the value of attribute network.



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# File 'lib/coinbase/asset.rb', line 82

def network
  @network
end

Class Method Details

.fetch(network, asset_id) ⇒ Coinbase::Asset

Fetches the Asset with the provided Asset ID.

Parameters:

  • network (Coinbase::Network, Symbol) —

    The Network or Network ID

  • asset_id (Symbol) —

    The Asset ID

Returns:



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# File 'lib/coinbase/asset.rb', line 49

def fetch(network, asset_id)
  network = Coinbase::Network.from_id(network)

  asset_model = Coinbase.call_api do
    assets_api.get_asset(
      network.normalized_id,
      primary_denomination(asset_id).to_s
    )
  end

  from_model(asset_model, asset_id: asset_id)
end

.from_model(asset_model, asset_id: nil) ⇒ Object 



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# File 'lib/coinbase/asset.rb', line 19

def from_model(asset_model, asset_id: nil)
  raise unless asset_model.is_a?(Coinbase::Client::Asset)

  decimals = asset_model.decimals

  # Handle the non-primary denomination case at the asset level.
  # TODO: Push this logic down to the backend.
  if asset_id && Coinbase.to_sym(asset_id) != Coinbase.to_sym(asset_model.asset_id)
    case asset_id
    when :gwei
      decimals = GWEI_DECIMALS
    when :wei
      decimals = 0
    else
      raise ArgumentError, "Unsupported asset ID: #{asset_id}"
    end
  end

  new(
    network: Coinbase.to_sym(asset_model.network_id),
    asset_id: asset_id || Coinbase.to_sym(asset_model.asset_id),
    address_id: asset_model.contract_address,
    decimals: decimals
  )
end

.primary_denomination(asset_id) ⇒ Symbol

Returns the primary denomination for the provided Asset ID. For assets with multiple denominations, e.g. eth can also be denominated in wei and gwei, this method will return the primary denomination. e.g. eth.

Parameters:

  • asset_id (Symbol) —

    The Asset ID

Returns:

  • (Symbol) —

    The primary denomination for the Asset ID



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# File 'lib/coinbase/asset.rb', line 13

def primary_denomination(asset_id)
  return :eth if %i[wei gwei].include?(asset_id)

  asset_id
end

Instance Method Details

#from_atomic_amount(atomic_amount) ⇒ BigDecimal

Converts the amount of the Asset from atomic to whole units.

Parameters:

  • atomic_amount (Integer, Float, BigDecimal) —

    The atomic amount to convert to whole units.

Returns:

  • (BigDecimal) —

    The amount in whole units



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# File 'lib/coinbase/asset.rb', line 87

def from_atomic_amount(atomic_amount)
  BigDecimal(atomic_amount) / BigDecimal(10).power(decimals)
end

#inspect ⇒ String

Same as to_s.

Returns:

  • (String) —

    a string representation of the Balance



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# File 'lib/coinbase/asset.rb', line 115

def inspect
  to_s
end

#primary_denomination ⇒ Symbol

Returns the primary denomination for the Asset. For ‘gwei` and `wei` the primary denomination is `eth`. For all other assets, the primary denomination is the same asset ID.

Returns:

  • (Symbol) —

    The primary denomination for the Asset



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# File 'lib/coinbase/asset.rb', line 102

def primary_denomination
  self.class.primary_denomination(asset_id)
end

#to_atomic_amount(whole_amount) ⇒ BigDecimal

Converts the amount of the Asset from whole to atomic units.

Parameters:

  • whole_amount (Integer, Float, BigDecimal) —

    The whole amount to convert to atomic units.

Returns:

  • (BigDecimal) —

    The amount in atomic units



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# File 'lib/coinbase/asset.rb', line 94

def to_atomic_amount(whole_amount)
  whole_amount * BigDecimal(10).power(decimals)
end

#to_s ⇒ String

Returns a string representation of the Asset.

Returns:

  • (String) —

    a string representation of the Asset



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# File 'lib/coinbase/asset.rb', line 108

def to_s
  "Coinbase::Asset{network_id: '#{network.id}', asset_id: '#{asset_id}', decimals: '#{decimals}'" \
    "#{address_id.nil? ? '' : ", address_id: '#{address_id}'"}}"
end