Class: Neb::Transaction

Inherits:
Object
  • Object
show all
Defined in:
lib/neb/transaction.rb

Constant Summary collapse

MAX_GAS_PRICE = 
1_000_000_000_000
MAX_GAS = 
50_000_000_000
GAS_PRICE = 
1_000_000
GAS_LIMIT = 
20_000
PAYLOAD_BINARY_TYPE = 
"binary".freeze
PAYLOAD_DEPLOY_TYPE = 
"deploy".freeze
PAYLOAD_CALL_TYPE = 
"call".freeze
CHAIN_ID_LIST = 
{
  1    => { name: "Mainnet",     url: "https://mainnet.nebulas.io" },
  1001 => { name: "Testnet",     url: "https://testnet.nebulas.io" },
  100  => { name: "Local Nodes", url: "http://127.0.0.1:8685" }
}.freeze

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(chain_id:, from_account:, to_address:, value:, nonce:, gas_price: GAS_PRICE, gas_limit: GAS_LIMIT, contract: {}) ⇒ Transaction

Returns a new instance of Transaction.



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# File 'lib/neb/transaction.rb', line 26

def initialize(chain_id:, from_account:, to_address:, value:, nonce:,
               gas_price: GAS_PRICE, gas_limit: GAS_LIMIT, contract: {})
  @chain_id     = chain_id
  @from_account = 
  @to_address   = Address.new(to_address)
  @value        = value
  @nonce        = nonce
  @gas_price    = gas_price
  @gas_limit    = gas_limit
  @data         = parse_contract(contract)
  @timestamp    = Time.now.to_i
end

Instance Attribute Details

#chain_id ⇒ Object (readonly)

Returns the value of attribute chain_id.



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# File 'lib/neb/transaction.rb', line 22

def chain_id
  @chain_id
end

#data ⇒ Object (readonly)

Returns the value of attribute data.



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# File 'lib/neb/transaction.rb', line 22

def data
  @data
end

#from_account ⇒ Object (readonly)

Returns the value of attribute from_account.



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# File 'lib/neb/transaction.rb', line 22

def 
  @from_account
end

#gas_limit ⇒ Object (readonly)

Returns the value of attribute gas_limit.



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# File 'lib/neb/transaction.rb', line 22

def gas_limit
  @gas_limit
end

#gas_price ⇒ Object (readonly)

Returns the value of attribute gas_price.



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# File 'lib/neb/transaction.rb', line 22

def gas_price
  @gas_price
end

#hash ⇒ Object (readonly)

Returns the value of attribute hash.



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# File 'lib/neb/transaction.rb', line 24

def hash
  @hash
end

#nonce ⇒ Object (readonly)

Returns the value of attribute nonce.



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# File 'lib/neb/transaction.rb', line 22

def nonce
  @nonce
end

#sign ⇒ Object (readonly)

Returns the value of attribute sign.



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# File 'lib/neb/transaction.rb', line 24

def sign
  @sign
end

#timestamp ⇒ Object (readonly)

Returns the value of attribute timestamp.



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# File 'lib/neb/transaction.rb', line 22

def timestamp
  @timestamp
end

#to_address ⇒ Object (readonly)

Returns the value of attribute to_address.



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# File 'lib/neb/transaction.rb', line 22

def to_address
  @to_address
end

#value ⇒ Object (readonly)

Returns the value of attribute value.



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# File 'lib/neb/transaction.rb', line 22

def value
  @value
end

Instance Method Details

#calculate_hash ⇒ Object 



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# File 'lib/neb/transaction.rb', line 98

def calculate_hash
  buffer = [
    .address_obj.encode(:bin_extended),
    to_address.encode(:bin_extended),
    Utils.zpad(Utils.int_to_big_endian(value), 16),
    Utils.zpad(Utils.int_to_big_endian(nonce), 8),
    Utils.zpad(Utils.int_to_big_endian(timestamp), 8),
    Corepb::Data.new(data).to_proto,
    Utils.zpad(Utils.int_to_big_endian(chain_id), 4),
    Utils.zpad(Utils.int_to_big_endian(gas_price), 16),
    Utils.zpad(Utils.int_to_big_endian(gas_limit), 16)
  ].join

  Utils.keccak256(buffer)
end

#parse_contract(contract) ⇒ Object 



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# File 'lib/neb/transaction.rb', line 39

def parse_contract(contract)
  payload_type, payload = nil, nil
  contract.deep_symbolize_keys!

  if contract[:source].present?
    payload_type = PAYLOAD_DEPLOY_TYPE
    payload = {
      source_type: contract[:source_type],
      source: contract[:source],
      args: contract[:args]
    }
  elsif contract[:function].present?
    payload_type = PAYLOAD_CALL_TYPE
    payload = {
      function: contract[:function],
      args: contract[:args]
    }
  else
    payload_type = PAYLOAD_BINARY_TYPE
    if contract.present?
      payload = {
        data: BaseConvert.decode(contract[:binary], 256)
      }
    end
  end

  if payload.present?
    payload = String.new(JSON.dump(payload.deep_camelize_keys(:upper)).html_safe)
    { type: payload_type, payload: payload }
  else
    { type: payload_type }
  end
end

#sign_hash ⇒ Object 



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# File 'lib/neb/transaction.rb', line 114

def sign_hash
  @hash = calculate_hash
  @sign = Secp256k1.sign(@hash, .private_key)
end

#to_proto ⇒ Object

Raises:



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# File 'lib/neb/transaction.rb', line 73

def to_proto
  raise UnsignError.new("Must sign_hash first") if sign.blank?

  tx = Corepb::Transaction.new(
    hash:      hash,
    from:      .address_obj.encode(:bin_extended),
    to:        to_address.encode(:bin_extended),
    value:     Utils.zpad(Utils.int_to_big_endian(value), 16),
    nonce:     nonce,
    timestamp: timestamp,
    data:      Corepb::Data.new(data),
    chain_id:  chain_id,
    gas_price: Utils.zpad(Utils.int_to_big_endian(gas_price), 16),
    gas_limit: Utils.zpad(Utils.int_to_big_endian(gas_limit), 16),
    alg:       Secp256k1::SECP256K1,
    sign:      sign
  )

  tx.to_proto
end

#to_proto_str ⇒ Object 



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# File 'lib/neb/transaction.rb', line 94

def to_proto_str
  Utils.encode64(to_proto)
end