673 lines
26 KiB
Python
673 lines
26 KiB
Python
import os
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import sys
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import time
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import random
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import tempfile
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from pathlib import Path
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from typing import Any, Dict, List, Tuple, Optional
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from blspy import PrependSignature, PrivateKey, PublicKey
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from chiavdf import prove
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from chiabip158 import PyBIP158
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from chiapos import DiskPlotter, DiskProver
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from src import __version__
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from src.consensus.coinbase import create_puzzlehash_for_pk
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from src.cmds.init import create_default_chia_config, initialize_ssl
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from src.types.BLSSignature import BLSPublicKey
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from src.consensus import block_rewards, pot_iterations
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from src.consensus.constants import constants
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from src.consensus.pot_iterations import calculate_min_iters_from_iterations
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from src.consensus.coinbase import create_coinbase_coin_and_signature
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from src.types.challenge import Challenge
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from src.types.classgroup import ClassgroupElement
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from src.types.full_block import FullBlock, additions_for_npc
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from src.types.BLSSignature import BLSSignature
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from src.types.coin import Coin, hash_coin_list
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from src.types.program import Program
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from src.types.header import Header, HeaderData
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from src.types.proof_of_space import ProofOfSpace
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from src.types.proof_of_time import ProofOfTime
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from src.types.sized_bytes import bytes32
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from src.util.keychain import Keychain
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from src.util.merkle_set import MerkleSet
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from src.util.ints import uint8, uint32, uint64, uint128, int512
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from src.util.hash import std_hash
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from src.util.path import mkdir
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from src.util.significant_bits import truncate_to_significant_bits
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from src.util.mempool_check_conditions import get_name_puzzle_conditions
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from src.util.config import load_config, load_config_cli, save_config
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from src.harvester import load_plots
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def get_plot_dir():
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cache_path = (
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Path(os.path.expanduser(os.getenv("CHIA_ROOT", "~/.chia/"))) / "test-plots"
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)
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mkdir(cache_path)
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return cache_path
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class BlockTools:
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"""
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Tools to generate blocks for testing.
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"""
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def __init__(
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self, root_path: Optional[Path] = None, real_plots: bool = False,
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):
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self._tempdir = None
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if root_path is None:
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self._tempdir = tempfile.TemporaryDirectory()
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root_path = Path(self._tempdir.name)
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create_default_chia_config(root_path)
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initialize_ssl(root_path)
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self.root_path = root_path
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self.n_wesolowski = uint8(0)
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self.real_plots = real_plots
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if not real_plots:
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# No real plots supplied, so we will use the small test plots
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self.use_any_pos = True
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self.plot_config: Dict = {"plots": {}}
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# Can't go much lower than 18, since plots start having no solutions
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k: uint8 = uint8(18)
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# Uses many plots for testing, in order to guarantee proofs of space at every height
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num_plots = 20
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# Use the empty string as the seed for the private key
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self.keychain = Keychain("testing", True)
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self.keychain.delete_all_keys()
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self.keychain.add_private_key_seed(b"block_tools")
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pool_sk: PrivateKey = self.keychain.get_all_private_keys()[0][
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0
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].get_private_key()
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pool_pk: PublicKey = pool_sk.get_public_key()
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plot_sks: List[PrivateKey] = [
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PrivateKey.from_seed(pn.to_bytes(4, "big")) for pn in range(num_plots)
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]
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plot_pks: List[PublicKey] = [sk.get_public_key() for sk in plot_sks]
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plot_seeds: List[bytes32] = [
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ProofOfSpace.calculate_plot_seed(pool_pk, plot_pk)
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for plot_pk in plot_pks
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]
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plot_dir = get_plot_dir()
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mkdir(plot_dir)
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filenames: List[str] = [
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f"genesis-plots-{k}{std_hash(int.to_bytes(i, 4, 'big')).hex()}.dat"
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for i in range(num_plots)
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]
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done_filenames = set()
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temp_dir = plot_dir / "plot.tmp"
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mkdir(temp_dir)
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try:
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for pn, filename in enumerate(filenames):
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if not (plot_dir / filename).exists():
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plotter = DiskPlotter()
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plotter.create_plot_disk(
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str(plot_dir),
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str(plot_dir),
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str(plot_dir),
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filename,
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k,
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b"genesis",
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plot_seeds[pn],
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128,
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)
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done_filenames.add(filename)
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self.plot_config["plots"][str(plot_dir / filename)] = {
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"pool_pk": bytes(pool_pk).hex(),
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"sk": bytes(plot_sks[pn]).hex(),
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"pool_sk": bytes(pool_sk).hex(),
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}
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save_config(self.root_path, "plots.yaml", self.plot_config)
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except KeyboardInterrupt:
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for filename in filenames:
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if (
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filename not in done_filenames
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and (plot_dir / filename).exists()
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):
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(plot_dir / filename).unlink()
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sys.exit(1)
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else:
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try:
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plot_config = load_config(root_path, "plots.yaml")
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normal_config = load_config(root_path, "config.yaml")
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except FileNotFoundError:
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raise RuntimeError("Plots not generated. Run chia-create-plots")
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self.keychain = Keychain(testing=False)
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private_keys: List[PrivateKey] = [
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k.get_private_key() for (k, _) in self.keychain.get_all_private_keys()
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]
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pool_pubkeys: List[PublicKey] = [sk.get_public_key() for sk in private_keys]
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if len(private_keys) == 0:
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raise RuntimeError("Keys not generated. Run `chia generate keys`")
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self.prover_dict, _, _ = load_plots(
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normal_config["harvester"], plot_config, pool_pubkeys, root_path
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)
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new_plot_config: Dict = {"plots": {}}
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for key, value in plot_config["plots"].items():
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for sk in private_keys:
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if (
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bytes(sk.get_public_key()).hex() == value["pool_pk"]
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and key in self.prover_dict
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):
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new_plot_config["plots"][key] = value
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new_plot_config["plots"][key]["pool_sk"] = bytes(sk).hex()
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self.plot_config = new_plot_config
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self.use_any_pos = False
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a = self.plot_config["plots"]
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print(f"Using {len(a)} reals plots to initialize block_tools")
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private_key = self.keychain.get_all_private_keys()[0][0]
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self.fee_target = create_puzzlehash_for_pk(
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BLSPublicKey(bytes(private_key.public_child(1).get_public_key()))
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)
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def get_harvester_signature(self, header_data: HeaderData, plot_pk: PublicKey):
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for value_dict in self.plot_config["plots"].values():
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if (
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PrivateKey.from_bytes(bytes.fromhex(value_dict["sk"])).get_public_key()
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== plot_pk
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):
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return PrivateKey.from_bytes(
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bytes.fromhex(value_dict["sk"])
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).sign_prepend(header_data.get_hash())
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def get_consecutive_blocks(
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self,
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input_constants: Dict,
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num_blocks: int,
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block_list: List[FullBlock] = [],
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seconds_per_block=None,
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seed: bytes = b"",
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reward_puzzlehash: bytes32 = None,
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transaction_data_at_height: Dict[int, Tuple[Program, BLSSignature]] = None,
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fees: uint64 = uint64(0),
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) -> List[FullBlock]:
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if transaction_data_at_height is None:
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transaction_data_at_height = {}
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test_constants: Dict[str, Any] = constants.copy()
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for key, value in input_constants.items():
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test_constants[key] = value
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if seconds_per_block is None:
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seconds_per_block = test_constants["BLOCK_TIME_TARGET"]
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if len(block_list) == 0:
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if "GENESIS_BLOCK" in test_constants:
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block_list.append(FullBlock.from_bytes(test_constants["GENESIS_BLOCK"]))
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else:
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block_list.append(
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self.create_genesis_block(test_constants, std_hash(seed), seed)
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)
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prev_difficulty = test_constants["DIFFICULTY_STARTING"]
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curr_difficulty = prev_difficulty
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curr_min_iters = test_constants["MIN_ITERS_STARTING"]
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elif len(block_list) < (
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test_constants["DIFFICULTY_EPOCH"] + test_constants["DIFFICULTY_DELAY"]
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):
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# First epoch (+delay), so just get first difficulty
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prev_difficulty = block_list[0].weight
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curr_difficulty = block_list[0].weight
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assert test_constants["DIFFICULTY_STARTING"] == prev_difficulty
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curr_min_iters = test_constants["MIN_ITERS_STARTING"]
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else:
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curr_difficulty = block_list[-1].weight - block_list[-2].weight
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prev_difficulty = (
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block_list[-1 - test_constants["DIFFICULTY_EPOCH"]].weight
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- block_list[-2 - test_constants["DIFFICULTY_EPOCH"]].weight
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)
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assert block_list[-1].proof_of_time is not None
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curr_min_iters = calculate_min_iters_from_iterations(
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block_list[-1].proof_of_space,
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curr_difficulty,
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block_list[-1].proof_of_time.number_of_iterations,
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)
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starting_height = block_list[-1].height + 1
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timestamp = block_list[-1].header.data.timestamp
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for next_height in range(starting_height, starting_height + num_blocks):
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if (
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next_height > test_constants["DIFFICULTY_EPOCH"]
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and next_height % test_constants["DIFFICULTY_EPOCH"]
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== test_constants["DIFFICULTY_DELAY"]
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):
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# Calculates new difficulty
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height1 = uint64(
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next_height
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- (
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test_constants["DIFFICULTY_EPOCH"]
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+ test_constants["DIFFICULTY_DELAY"]
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)
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- 1
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)
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height2 = uint64(next_height - (test_constants["DIFFICULTY_EPOCH"]) - 1)
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height3 = uint64(next_height - (test_constants["DIFFICULTY_DELAY"]) - 1)
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if height1 >= 0:
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block1 = block_list[height1]
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iters1 = block1.header.data.total_iters
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timestamp1 = block1.header.data.timestamp
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else:
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block1 = block_list[0]
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timestamp1 = (
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block1.header.data.timestamp
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- test_constants["BLOCK_TIME_TARGET"]
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)
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iters1 = uint64(0)
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timestamp2 = block_list[height2].header.data.timestamp
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timestamp3 = block_list[height3].header.data.timestamp
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block3 = block_list[height3]
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iters3 = block3.header.data.total_iters
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term1 = (
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test_constants["DIFFICULTY_DELAY"]
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* prev_difficulty
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* (timestamp3 - timestamp2)
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* test_constants["BLOCK_TIME_TARGET"]
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)
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term2 = (
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(test_constants["DIFFICULTY_WARP_FACTOR"] - 1)
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* (
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test_constants["DIFFICULTY_EPOCH"]
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- test_constants["DIFFICULTY_DELAY"]
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)
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* curr_difficulty
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* (timestamp2 - timestamp1)
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* test_constants["BLOCK_TIME_TARGET"]
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)
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# Round down after the division
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new_difficulty_precise: uint64 = uint64(
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(term1 + term2)
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// (
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test_constants["DIFFICULTY_WARP_FACTOR"]
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* (timestamp3 - timestamp2)
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* (timestamp2 - timestamp1)
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)
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)
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new_difficulty = uint64(
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truncate_to_significant_bits(
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new_difficulty_precise, test_constants["SIGNIFICANT_BITS"]
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)
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)
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max_diff = uint64(
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truncate_to_significant_bits(
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test_constants["DIFFICULTY_FACTOR"] * curr_difficulty,
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test_constants["SIGNIFICANT_BITS"],
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)
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)
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min_diff = uint64(
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truncate_to_significant_bits(
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curr_difficulty // test_constants["DIFFICULTY_FACTOR"],
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test_constants["SIGNIFICANT_BITS"],
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)
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)
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if new_difficulty >= curr_difficulty:
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new_difficulty = min(new_difficulty, max_diff,)
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else:
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new_difficulty = max([uint64(1), new_difficulty, min_diff])
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min_iters_precise = uint64(
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(iters3 - iters1)
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// (
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test_constants["DIFFICULTY_EPOCH"]
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* test_constants["MIN_ITERS_PROPORTION"]
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)
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)
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curr_min_iters = uint64(
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truncate_to_significant_bits(
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min_iters_precise, test_constants["SIGNIFICANT_BITS"]
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)
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)
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prev_difficulty = curr_difficulty
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curr_difficulty = new_difficulty
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time_taken = seconds_per_block
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timestamp += time_taken
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transactions: Optional[Program] = None
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aggsig: Optional[BLSSignature] = None
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if next_height in transaction_data_at_height:
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transactions, aggsig = transaction_data_at_height[next_height]
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update_difficulty = (
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next_height % test_constants["DIFFICULTY_EPOCH"]
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== test_constants["DIFFICULTY_DELAY"]
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)
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block_list.append(
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self.create_next_block(
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test_constants,
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block_list[-1],
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timestamp,
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update_difficulty,
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curr_difficulty,
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curr_min_iters,
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seed,
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reward_puzzlehash,
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transactions,
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aggsig,
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fees,
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)
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)
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return block_list
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def create_genesis_block(
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self,
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input_constants: Dict,
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challenge_hash=bytes([0] * 32),
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seed: bytes = b"",
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reward_puzzlehash: Optional[bytes32] = None,
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) -> FullBlock:
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"""
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Creates the genesis block with the specified details.
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"""
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test_constants: Dict[str, Any] = constants.copy()
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for key, value in input_constants.items():
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test_constants[key] = value
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return self._create_block(
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test_constants,
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challenge_hash,
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uint32(0),
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bytes([0] * 32),
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uint64(0),
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uint128(0),
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uint64(int(time.time())),
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uint64(test_constants["DIFFICULTY_STARTING"]),
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uint64(test_constants["MIN_ITERS_STARTING"]),
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seed,
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True,
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reward_puzzlehash,
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)
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def create_next_block(
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self,
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input_constants: Dict,
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prev_block: FullBlock,
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timestamp: uint64,
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update_difficulty: bool,
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difficulty: uint64,
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min_iters: uint64,
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seed: bytes = b"",
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reward_puzzlehash: bytes32 = None,
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transactions: Program = None,
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aggsig: BLSSignature = None,
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fees: uint64 = uint64(0),
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) -> FullBlock:
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"""
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Creates the next block with the specified details.
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"""
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test_constants: Dict[str, Any] = constants.copy()
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for key, value in input_constants.items():
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test_constants[key] = value
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assert prev_block.proof_of_time is not None
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if update_difficulty:
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challenge = Challenge(
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prev_block.proof_of_space.challenge_hash,
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std_hash(
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prev_block.proof_of_space.get_hash()
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+ prev_block.proof_of_time.output.get_hash()
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),
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difficulty,
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)
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else:
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challenge = Challenge(
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prev_block.proof_of_space.challenge_hash,
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std_hash(
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prev_block.proof_of_space.get_hash()
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+ prev_block.proof_of_time.output.get_hash()
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),
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None,
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)
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return self._create_block(
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test_constants,
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challenge.get_hash(),
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uint32(prev_block.height + 1),
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prev_block.header_hash,
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prev_block.header.data.total_iters,
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prev_block.weight,
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timestamp,
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uint64(difficulty),
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min_iters,
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seed,
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False,
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reward_puzzlehash,
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transactions,
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aggsig,
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fees,
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)
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def _create_block(
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self,
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test_constants: Dict,
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challenge_hash: bytes32,
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height: uint32,
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prev_header_hash: bytes32,
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prev_iters: uint64,
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prev_weight: uint128,
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timestamp: uint64,
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difficulty: uint64,
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min_iters: uint64,
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seed: bytes,
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genesis: bool = False,
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reward_puzzlehash: bytes32 = None,
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transactions: Program = None,
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aggsig: BLSSignature = None,
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fees: uint64 = uint64(0),
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) -> FullBlock:
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"""
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Creates a block with the specified details. Uses the stored plots to create a proof of space,
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and also evaluates the VDF for the proof of time.
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"""
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selected_prover = None
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selected_plot_sk = None
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selected_pool_sk = None
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selected_proof_index = 0
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plots = list(self.plot_config["plots"].items())
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selected_quality: Optional[bytes] = None
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best_quality = 0
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if self.use_any_pos:
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for i in range(len(plots) * 3):
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# Allow passing in seed, to create reorgs and different chains
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random.seed(seed + i.to_bytes(4, "big"))
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seeded_pn = random.randint(0, len(plots) - 1)
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pool_sk = PrivateKey.from_bytes(
|
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bytes.fromhex(plots[seeded_pn][1]["pool_sk"])
|
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)
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plot_sk = PrivateKey.from_bytes(
|
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bytes.fromhex(plots[seeded_pn][1]["sk"])
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)
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prover = DiskProver(plots[seeded_pn][0])
|
|
qualities = prover.get_qualities_for_challenge(challenge_hash)
|
|
if len(qualities) > 0:
|
|
if self.use_any_pos:
|
|
selected_quality = qualities[0]
|
|
selected_prover = prover
|
|
selected_pool_sk = pool_sk
|
|
selected_plot_sk = plot_sk
|
|
break
|
|
else:
|
|
for i in range(len(plots)):
|
|
pool_sk = PrivateKey.from_bytes(bytes.fromhex(plots[i][1]["pool_sk"]))
|
|
plot_sk = PrivateKey.from_bytes(bytes.fromhex(plots[i][1]["sk"]))
|
|
try:
|
|
if self.real_plots:
|
|
prover = self.prover_dict[plots[i][0]]
|
|
else:
|
|
prover = DiskProver(plots[i][0])
|
|
except (ValueError, KeyError) as e:
|
|
continue
|
|
qualities = prover.get_qualities_for_challenge(challenge_hash)
|
|
j = 0
|
|
for quality in qualities:
|
|
qual_int = int.from_bytes(quality, "big", signed=False)
|
|
if qual_int > best_quality:
|
|
best_quality = qual_int
|
|
selected_quality = quality
|
|
selected_prover = prover
|
|
selected_pool_sk = pool_sk
|
|
selected_plot_sk = plot_sk
|
|
selected_proof_index = j
|
|
j += 1
|
|
|
|
assert selected_prover
|
|
assert selected_pool_sk
|
|
assert selected_plot_sk
|
|
pool_pk = selected_pool_sk.get_public_key()
|
|
plot_pk = selected_plot_sk.get_public_key()
|
|
if selected_quality is None:
|
|
raise RuntimeError("No proofs for this challenge")
|
|
|
|
proof_xs: bytes = selected_prover.get_full_proof(
|
|
challenge_hash, selected_proof_index
|
|
)
|
|
proof_of_space: ProofOfSpace = ProofOfSpace(
|
|
challenge_hash, pool_pk, plot_pk, selected_prover.get_size(), proof_xs
|
|
)
|
|
number_iters: uint64 = pot_iterations.calculate_iterations(
|
|
proof_of_space, difficulty, min_iters
|
|
)
|
|
# print("Doing iters", number_iters)
|
|
int_size = (test_constants["DISCRIMINANT_SIZE_BITS"] + 16) >> 4
|
|
|
|
result = prove(
|
|
challenge_hash, test_constants["DISCRIMINANT_SIZE_BITS"], number_iters
|
|
)
|
|
|
|
output = ClassgroupElement(
|
|
int512(int.from_bytes(result[0:int_size], "big", signed=True,)),
|
|
int512(
|
|
int.from_bytes(result[int_size : 2 * int_size], "big", signed=True,)
|
|
),
|
|
)
|
|
proof_bytes = result[2 * int_size : 4 * int_size]
|
|
|
|
proof_of_time = ProofOfTime(
|
|
challenge_hash, number_iters, output, self.n_wesolowski, proof_bytes,
|
|
)
|
|
|
|
if not reward_puzzlehash:
|
|
reward_puzzlehash = self.fee_target
|
|
|
|
# Use the extension data to create different blocks based on header hash
|
|
extension_data: bytes32 = bytes32([random.randint(0, 255) for _ in range(32)])
|
|
cost = uint64(0)
|
|
|
|
coinbase_reward = block_rewards.calculate_block_reward(height)
|
|
fee_reward = uint64(block_rewards.calculate_base_fee(height) + fees)
|
|
|
|
coinbase_coin, coinbase_signature = create_coinbase_coin_and_signature(
|
|
height, reward_puzzlehash, coinbase_reward, selected_pool_sk
|
|
)
|
|
|
|
parent_coin_name = std_hash(std_hash(height))
|
|
fees_coin = Coin(parent_coin_name, reward_puzzlehash, uint64(fee_reward))
|
|
|
|
# Create filter
|
|
byte_array_tx: List[bytes32] = []
|
|
tx_additions: List[Coin] = []
|
|
tx_removals: List[bytes32] = []
|
|
encoded = None
|
|
if transactions:
|
|
error, npc_list, _ = get_name_puzzle_conditions(transactions)
|
|
additions: List[Coin] = additions_for_npc(npc_list)
|
|
for coin in additions:
|
|
tx_additions.append(coin)
|
|
byte_array_tx.append(bytearray(coin.puzzle_hash))
|
|
for npc in npc_list:
|
|
tx_removals.append(npc.coin_name)
|
|
byte_array_tx.append(bytearray(npc.coin_name))
|
|
|
|
bip158: PyBIP158 = PyBIP158(byte_array_tx)
|
|
encoded = bytes(bip158.GetEncoded())
|
|
|
|
removal_merkle_set = MerkleSet()
|
|
addition_merkle_set = MerkleSet()
|
|
|
|
# Create removal Merkle set
|
|
for coin_name in tx_removals:
|
|
removal_merkle_set.add_already_hashed(coin_name)
|
|
|
|
# Create addition Merkle set
|
|
puzzlehash_coin_map: Dict[bytes32, List[Coin]] = {}
|
|
for coin in tx_additions:
|
|
if coin.puzzle_hash in puzzlehash_coin_map:
|
|
puzzlehash_coin_map[coin.puzzle_hash].append(coin)
|
|
else:
|
|
puzzlehash_coin_map[coin.puzzle_hash] = [coin]
|
|
|
|
# Addition Merkle set contains puzzlehash and hash of all coins with that puzzlehash
|
|
for puzzle, coins in puzzlehash_coin_map.items():
|
|
addition_merkle_set.add_already_hashed(puzzle)
|
|
addition_merkle_set.add_already_hashed(hash_coin_list(coins))
|
|
|
|
additions_root = addition_merkle_set.get_root()
|
|
removal_root = removal_merkle_set.get_root()
|
|
|
|
generator_hash = (
|
|
transactions.get_tree_hash()
|
|
if transactions is not None
|
|
else bytes32([0] * 32)
|
|
)
|
|
filter_hash = std_hash(encoded) if encoded is not None else bytes32([0] * 32)
|
|
|
|
header_data: HeaderData = HeaderData(
|
|
height,
|
|
prev_header_hash,
|
|
timestamp,
|
|
filter_hash,
|
|
proof_of_space.get_hash(),
|
|
uint128(prev_weight + difficulty),
|
|
uint64(prev_iters + number_iters),
|
|
additions_root,
|
|
removal_root,
|
|
coinbase_coin,
|
|
coinbase_signature,
|
|
fees_coin,
|
|
aggsig,
|
|
cost,
|
|
extension_data,
|
|
generator_hash,
|
|
)
|
|
|
|
header_hash_sig: PrependSignature = selected_plot_sk.sign_prepend(
|
|
header_data.get_hash()
|
|
)
|
|
|
|
header: Header = Header(header_data, header_hash_sig)
|
|
|
|
full_block: FullBlock = FullBlock(
|
|
proof_of_space, proof_of_time, header, transactions, encoded
|
|
)
|
|
|
|
return full_block
|
|
|
|
|
|
# This code generates a genesis block, call as main to output genesis block to terminal
|
|
# This might take a while, using the python VDF implementation.
|
|
# Run by doing python -m tests.block_tools
|
|
if __name__ == "__main__":
|
|
from src.util.default_root import DEFAULT_ROOT_PATH
|
|
|
|
bt = BlockTools(root_path=DEFAULT_ROOT_PATH, real_plots=True)
|
|
print(
|
|
bytes(
|
|
bt.create_genesis_block(
|
|
{},
|
|
bytes([2] * 32),
|
|
b"0",
|
|
bytes.fromhex(
|
|
"a4259182b4d8e0af21331fc5be2681f953400b6726fa4095e3b91ae8f005a836"
|
|
),
|
|
)
|
|
)
|
|
)
|