119 lines
3.1 KiB
Python
119 lines
3.1 KiB
Python
# external imports
|
|
from chainlib.jsonrpc import JSONRPCRequest
|
|
from chainlib.block import Block as BaseBlock
|
|
from hexathon import (
|
|
add_0x,
|
|
strip_0x,
|
|
even,
|
|
)
|
|
|
|
# local imports
|
|
from chainlib.eth.tx import Tx
|
|
|
|
|
|
def block_latest(id_generator=None):
|
|
"""Implements chainlib.interface.ChainInterface method
|
|
"""
|
|
j = JSONRPCRequest(id_generator)
|
|
o = j.template()
|
|
o['method'] = 'eth_blockNumber'
|
|
return j.finalize(o)
|
|
|
|
|
|
def block_by_hash(hsh, include_tx=True, id_generator=None):
|
|
"""Implements chainlib.interface.ChainInterface method
|
|
"""
|
|
j = JSONRPCRequest(id_generator)
|
|
o = j.template()
|
|
o['method'] = 'eth_getBlockByHash'
|
|
o['params'].append(hsh)
|
|
o['params'].append(include_tx)
|
|
return j.finalize(o)
|
|
|
|
|
|
def block_by_number(n, include_tx=True, id_generator=None):
|
|
"""Implements chainlib.interface.ChainInterface method
|
|
"""
|
|
nhx = add_0x(even(hex(n)[2:]))
|
|
j = JSONRPCRequest(id_generator)
|
|
o = j.template()
|
|
o['method'] = 'eth_getBlockByNumber'
|
|
o['params'].append(nhx)
|
|
o['params'].append(include_tx)
|
|
return j.finalize(o)
|
|
|
|
|
|
def transaction_count(block_hash, id_generator=None):
|
|
"""Generate json-rpc query to get transaction count of block
|
|
|
|
:param block_hash: Block hash, in hex
|
|
:type block_hash: str
|
|
:param id_generator: JSONRPC id generator
|
|
:type id_generator: JSONRPCIdGenerator
|
|
:rtype: dict
|
|
:returns: rpc query object
|
|
"""
|
|
j = JSONRPCRequest(id_generator)
|
|
o = j.template()
|
|
o['method'] = 'eth_getBlockTransactionCountByHash'
|
|
o['params'].append(block_hash)
|
|
return j.finalize(o)
|
|
|
|
|
|
def syncing(id_generator=None):
|
|
"""Request the syncing state of the node
|
|
|
|
:param id_generator: JSONRPC id generator
|
|
:type id_generator: JSONRPCIdGenerator
|
|
:rtype: dict
|
|
:returns: rpc query object
|
|
"""
|
|
j = JSONRPCRequest(id_generator)
|
|
o = j.template()
|
|
o['method'] = 'eth_syncing'
|
|
return j.finalize(o)
|
|
|
|
|
|
class Block(BaseBlock):
|
|
"""Encapsulates an Ethereum block
|
|
|
|
:param src: Block representation data
|
|
:type src: dict
|
|
:todo: Add hex to number parse to normalize
|
|
"""
|
|
|
|
tx_generator = Tx
|
|
|
|
def __init__(self, src):
|
|
self.hash = src['hash']
|
|
try:
|
|
self.number = int(strip_0x(src['number']), 16)
|
|
except TypeError:
|
|
self.number = int(src['number'])
|
|
self.txs = src['transactions']
|
|
self.block_src = src
|
|
try:
|
|
self.timestamp = int(strip_0x(src['timestamp']), 16)
|
|
except TypeError:
|
|
self.timestamp = int(src['timestamp'])
|
|
|
|
|
|
def get_tx(self, tx_hash):
|
|
i = 0
|
|
idx = -1
|
|
tx_hash = add_0x(tx_hash)
|
|
for tx in self.txs:
|
|
tx_hash_block = None
|
|
try:
|
|
tx_hash_block = add_0x(tx['hash'])
|
|
except TypeError:
|
|
tx_hash_block = add_0x(tx)
|
|
if tx_hash_block == tx_hash:
|
|
idx = i
|
|
break
|
|
i += 1
|
|
if idx == -1:
|
|
raise AttributeError('tx {} not found in block {}'.format(tx_hash, self.hash))
|
|
return idx
|
|
|