Class: Ethereum::Env

Inherits:
Object show all
Defined in:
lib/ethereum/env.rb

Constant Summary collapse

DEFAULT_CONFIG = 
{
  # Genesis constants
  genesis_difficulty: 131072,
  genesis_gas_limit: 3141592,
  genesis_prevhash: Constant::HASH_ZERO,
  genesis_coinbase: Address::ZERO,
  genesis_nonce: Utils.zpad_int(42, 8),
  genesis_mixhash: Constant::HASH_ZERO,
  genesis_timestamp: 0,
  genesis_extra_data: Constant::BYTE_EMPTY,
  genesis_initial_alloc: {},

  # Gas limit adjustment algo:
  #
  # block.gas_limit = block.parent.gas_limit * 1023/1024 +
  #                     (block.gas.used * 6/5) / 1024
  min_gas_limit: 5000,
  max_gas_limit: 2**63 - 1,
  gaslimit_ema_factor: 1024,
  gaslimit_adjmax_factor: 1024,
  blklim_factor_nom: 3,
  blklim_factor_den: 2,

  block_reward:  5000.finney,
  nephew_reward: 5000.finney/32, # block_reward/32

  # GHOST constants
  uncle_depth_penalty_factor: 8,
  max_uncle_depth: 6, # max (block.number - uncle.number)
  max_uncles: 2,

  diff_adjustment_cutoff: 13,
  block_diff_factor: 2048,
  min_diff: 131072,

  pow_epoch_length: 30000,

  max_extradata_length: 32,

  expdiff_period: 100000,
  expdiff_free_periods: 2,

  account_initial_nonce: 0,

  # Milestones
  homestead_fork_blknum: 1150000,
  homestead_diff_adjustment_cutoff: 10,

  metropolis_fork_blknum: 2**100,
  metropolis_entry_point: 2**160-1,
  metropolis_stateroot_store: 0x10,
  metropolis_blockhash_store: 0x20,
  metropolis_wrapround: 65536,
  metropolis_getter_code: Utils.decode_hex('6000355460205260206020f3'),
  metropolis_diff_adjustment_cutoff: 9,

  dao_fork_blknum: 1920000,
  child_dao_list: Utils.child_dao_list.map {|addr| Utils.normalize_address addr },
  dao_withdrawer: Utils.normalize_address('0xbf4ed7b27f1d666546e30d74d50d173d20bca754'),

  anti_dos_fork_blknum: 2457000,
  clearing_fork_blknum: 2**100
}.freeze

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(db, config: nil, global_config: {}) ⇒ Env

Returns a new instance of Env.



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# File 'lib/ethereum/env.rb', line 72

def initialize(db, config: nil, global_config: {})
  @db = db
  @config = config || DEFAULT_CONFIG
  @global_config = global_config

  raise "invalid nephew/block reward config" unless @config[:nephew_reward] == @config[:block_reward]/32
end

Instance Attribute Details

#config ⇒ Object (readonly)

Returns the value of attribute config.



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# File 'lib/ethereum/env.rb', line 70

def config
  @config
end

#db ⇒ Object (readonly)

Returns the value of attribute db.



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# File 'lib/ethereum/env.rb', line 70

def db
  @db
end

#global_config ⇒ Object (readonly)

Returns the value of attribute global_config.



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# File 'lib/ethereum/env.rb', line 70

def global_config
  @global_config
end