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