xch-blockchain/tools/analyze-chain.py
2022-04-08 09:37:10 -07:00

133 lines
4.3 KiB
Python
Executable file

#!/usr/bin/env python3
import sqlite3
import sys
import zstd
import click
from pathlib import Path
from typing import List
from time import time
from chia_rs import run_generator, MEMPOOL_MODE
from chia.types.full_block import FullBlock
from chia.types.blockchain_format.program import Program
from chia.consensus.default_constants import DEFAULT_CONSTANTS
from chia.wallet.puzzles.rom_bootstrap_generator import get_generator
from chia.util.ints import uint32
GENERATOR_ROM = bytes(get_generator())
# returns an optional error code and an optional PySpendBundleConditions (from chia_rs)
# exactly one of those will hold a value and the number of seconds it took to
# run
def run_gen(env_data: bytes, block_program_args: bytes, flags: uint32):
max_cost = DEFAULT_CONSTANTS.MAX_BLOCK_COST_CLVM
cost_per_byte = DEFAULT_CONSTANTS.COST_PER_BYTE
# we don't charge for the size of the generator ROM. However, we do charge
# cost for the operations it executes
max_cost -= len(env_data) * cost_per_byte
env_data = b"\xff" + env_data + b"\xff" + block_program_args + b"\x80"
try:
start_time = time()
err, result = run_generator(
GENERATOR_ROM,
env_data,
max_cost,
flags,
)
run_time = time() - start_time
return err, result, run_time
except Exception as e:
# GENERATOR_RUNTIME_ERROR
sys.stderr.write(f"Exception: {e}\n")
return 117, None, 0
@click.command()
@click.argument("file", type=click.Path(), required=True)
@click.option(
"--mempool-mode", default=False, is_flag=True, help="execute all block generators in the strict mempool mode"
)
def main(file: Path, mempool_mode: bool):
c = sqlite3.connect(file)
rows = c.execute("SELECT header_hash, height, block FROM full_blocks ORDER BY height")
height_to_hash: List[bytes] = []
for r in rows:
hh: bytes = r[0]
height = r[1]
block = FullBlock.from_bytes(zstd.decompress(r[2]))
if len(height_to_hash) <= height:
assert len(height_to_hash) == height
height_to_hash.append(hh)
else:
height_to_hash[height] = hh
if height > 0:
prev_hh = block.prev_header_hash
h = height - 1
while height_to_hash[h] != prev_hh:
height_to_hash[h] = prev_hh
ref = c.execute("SELECT block FROM full_blocks WHERE header_hash=?", (prev_hh,))
ref_block = FullBlock.from_bytes(zstd.decompress(ref.fetchone()[0]))
prev_hh = ref_block.prev_header_hash
h -= 1
if h < 0:
break
if block.transactions_generator is None:
sys.stderr.write(f" no-generator. block {height}\r")
continue
# add the block program arguments
block_program_args = bytearray(b"\xff")
num_refs = 0
start_time = time()
for h in block.transactions_generator_ref_list:
ref = c.execute("SELECT block FROM full_blocks WHERE header_hash=?", (height_to_hash[h],))
ref_block = FullBlock.from_bytes(zstd.decompress(ref.fetchone()[0]))
block_program_args += b"\xff"
block_program_args += Program.to(bytes(ref_block.transactions_generator)).as_bin()
num_refs += 1
ref.close()
ref_lookup_time = time() - start_time
block_program_args += b"\x80\x80"
if mempool_mode:
flags = MEMPOOL_MODE
else:
flags = 0
err, result, run_time = run_gen(bytes(block.transactions_generator), bytes(block_program_args), flags)
if err is not None:
sys.stderr.write(f"ERROR: {hh.hex()} {height} {err}\n")
break
num_removals = len(result.spends)
fees = result.reserve_fee
cost = result.cost
num_additions = 0
for spends in result.spends:
num_additions += len(spends.create_coin)
print(
f"{hh.hex()}\t{height}\t{cost}\t{run_time:0.3f}\t{num_refs}\t{ref_lookup_time:0.3f}\t{fees}\t"
f"{len(bytes(block.transactions_generator))}\t"
f"{num_removals}\t{num_additions}"
)
if __name__ == "__main__":
# pylint: disable = no-value-for-parameter
main()