mirror of
https://github.com/planetmint/planetmint.git
synced 2025-07-01 10:22:30 +00:00
251 lines
9.3 KiB
Python
251 lines
9.3 KiB
Python
# Copyright © 2020 Interplanetary Database Association e.V.,
|
|
# Planetmint and IPDB software contributors.
|
|
# SPDX-License-Identifier: (Apache-2.0 AND CC-BY-4.0)
|
|
# Code is Apache-2.0 and docs are CC-BY-4.0
|
|
|
|
"""This module contains all the goodness to integrate Planetmint
|
|
with Tendermint.
|
|
"""
|
|
import logging
|
|
import sys
|
|
|
|
from tendermint.abci import types_pb2
|
|
from abci.application import BaseApplication
|
|
from abci.application import OkCode
|
|
from tendermint.abci.types_pb2 import (
|
|
ResponseInfo,
|
|
ResponseInitChain,
|
|
ResponseCheckTx,
|
|
ResponseDeliverTx,
|
|
ResponseBeginBlock,
|
|
ResponseEndBlock,
|
|
ResponseCommit,
|
|
)
|
|
|
|
from planetmint.application.validator import Validator
|
|
from planetmint.model.models import Models
|
|
from planetmint.abci.tendermint_utils import decode_transaction, calculate_hash, decode_validator
|
|
from planetmint.abci.block import Block
|
|
from planetmint.ipc.events import EventTypes, Event
|
|
|
|
CodeTypeError = 1
|
|
logger = logging.getLogger(__name__)
|
|
|
|
|
|
class App(BaseApplication):
|
|
"""Bridge between Planetmint and Tendermint.
|
|
|
|
The role of this class is to expose the Planetmint
|
|
transaction logic to Tendermint Core.
|
|
"""
|
|
|
|
def __init__(self, planetmint_node=None, events_queue=None, models: Models = None, validator: Validator = None):
|
|
# super().__init__(abci)
|
|
logger.debug("Checking values of types")
|
|
logger.debug(dir(types_pb2))
|
|
self.events_queue = events_queue
|
|
self.validator = Validator()
|
|
self.models = models or Models()
|
|
self.block_txn_ids = []
|
|
self.block_txn_hash = ""
|
|
self.block_transactions = []
|
|
self.validators = None
|
|
self.new_height = None
|
|
self.chain = self.models.get_latest_abci_chain()
|
|
|
|
def log_abci_migration_error(self, chain_id, validators):
|
|
logger.error(
|
|
"An ABCI chain migration is in process. "
|
|
"Download theself.planetmint_node.get_latest_abci_chain new ABCI client and configure it with "
|
|
f"chain_id={chain_id} and validators={validators}."
|
|
)
|
|
|
|
def abort_if_abci_chain_is_not_synced(self):
|
|
if self.chain is None or self.chain["is_synced"]:
|
|
return
|
|
validators = self.models.get_validators()
|
|
self.log_abci_migration_error(self.chain["chain_id"], validators)
|
|
sys.exit(1)
|
|
|
|
def init_chain(self, genesis):
|
|
"""Initialize chain upon genesis or a migration"""
|
|
app_hash = ""
|
|
height = 0
|
|
known_chain = self.models.get_latest_abci_chain()
|
|
if known_chain is not None:
|
|
chain_id = known_chain["chain_id"]
|
|
|
|
if known_chain["is_synced"]:
|
|
msg = f"Got invalid InitChain ABCI request ({genesis}) - " f"the chain {chain_id} is already synced."
|
|
logger.error(msg)
|
|
sys.exit(1)
|
|
if chain_id != genesis.chain_id:
|
|
validators = self.models.get_validators()
|
|
self.log_abci_migration_error(chain_id, validators)
|
|
sys.exit(1)
|
|
# set migration values for app hash and height
|
|
block = self.models.get_latest_block()
|
|
app_hash = "" if block is None else block["app_hash"]
|
|
height = 0 if block is None else block["height"] + 1
|
|
known_validators = self.models.get_validators()
|
|
validator_set = [decode_validator(v) for v in genesis.validators]
|
|
if known_validators and known_validators != validator_set:
|
|
self.log_abci_migration_error(known_chain["chain_id"], known_validators)
|
|
sys.exit(1)
|
|
block = Block(app_hash=app_hash, height=height, transactions=[])
|
|
self.models.store_block(block._asdict())
|
|
self.models.store_validator_set(height + 1, validator_set)
|
|
abci_chain_height = 0 if known_chain is None else known_chain["height"]
|
|
self.models.store_abci_chain(abci_chain_height, genesis.chain_id, True)
|
|
self.chain = {"height": abci_chain_height, "is_synced": True, "chain_id": genesis.chain_id}
|
|
return ResponseInitChain()
|
|
|
|
def info(self, request):
|
|
"""Return height of the latest committed block."""
|
|
|
|
self.abort_if_abci_chain_is_not_synced()
|
|
|
|
# Check if Planetmint supports the Tendermint version
|
|
# if not (hasattr(request, 'version') and tendermint_version_is_compatible(request.version)):
|
|
# logger.error(f'Unsupported Tendermint version: {getattr(request, "version", "no version")}.'
|
|
# f' Currently, Planetmint only supports {__tm_supported_versions__}. Exiting!')
|
|
# sys.exit(1)
|
|
|
|
# logger.info(f"Tendermint version: {request.version}")
|
|
|
|
r = ResponseInfo()
|
|
block = self.models.get_latest_block()
|
|
if block:
|
|
chain_shift = 0 if self.chain is None else self.chain["height"]
|
|
r.last_block_height = block["height"] - chain_shift
|
|
r.last_block_app_hash = block["app_hash"].encode("utf-8")
|
|
else:
|
|
r.last_block_height = 0
|
|
r.last_block_app_hash = b""
|
|
return r
|
|
|
|
def check_tx(self, raw_transaction):
|
|
"""Validate the transaction before entry into
|
|
the mempool.
|
|
|
|
Args:
|
|
raw_tx: a raw string (in bytes) transaction.
|
|
"""
|
|
|
|
self.abort_if_abci_chain_is_not_synced()
|
|
|
|
logger.debug("check_tx: %s", raw_transaction)
|
|
transaction = decode_transaction(raw_transaction)
|
|
if self.validator.is_valid_transaction(transaction):
|
|
logger.debug("check_tx: VALID")
|
|
return ResponseCheckTx(code=OkCode)
|
|
else:
|
|
logger.debug("check_tx: INVALID")
|
|
return ResponseCheckTx(code=CodeTypeError)
|
|
|
|
def begin_block(self, req_begin_block):
|
|
"""Initialize list of transaction.
|
|
Args:
|
|
req_begin_block: block object which contains block header
|
|
and block hash.
|
|
"""
|
|
self.abort_if_abci_chain_is_not_synced()
|
|
|
|
chain_shift = 0 if self.chain is None else self.chain["height"]
|
|
# req_begin_block.header.num_txs not found, so removing it.
|
|
logger.debug("BEGIN BLOCK, height:%s", req_begin_block.header.height + chain_shift)
|
|
|
|
self.block_txn_ids = []
|
|
self.block_transactions = []
|
|
return ResponseBeginBlock()
|
|
|
|
def deliver_tx(self, raw_transaction):
|
|
"""Validate the transaction before mutating the state.
|
|
|
|
Args:
|
|
raw_tx: a raw string (in bytes) transaction.
|
|
"""
|
|
|
|
self.abort_if_abci_chain_is_not_synced()
|
|
|
|
logger.debug("deliver_tx: %s", raw_transaction)
|
|
transaction = self.validator.is_valid_transaction(
|
|
decode_transaction(raw_transaction), self.block_transactions
|
|
)
|
|
|
|
if not transaction:
|
|
logger.debug("deliver_tx: INVALID")
|
|
return ResponseDeliverTx(code=CodeTypeError)
|
|
else:
|
|
logger.debug("storing tx")
|
|
self.block_txn_ids.append(transaction.id)
|
|
self.block_transactions.append(transaction)
|
|
return ResponseDeliverTx(code=OkCode)
|
|
|
|
def end_block(self, request_end_block):
|
|
"""Calculate block hash using transaction ids and previous block
|
|
hash to be stored in the next block.
|
|
|
|
Args:
|
|
height (int): new height of the chain.
|
|
"""
|
|
|
|
self.abort_if_abci_chain_is_not_synced()
|
|
|
|
chain_shift = 0 if self.chain is None else self.chain["height"]
|
|
height = request_end_block.height + chain_shift
|
|
self.new_height = height
|
|
|
|
# store pre-commit state to recover in case there is a crash during
|
|
# `end_block` or `commit`
|
|
logger.debug(f"Updating pre-commit state: {self.new_height}")
|
|
pre_commit_state = dict(height=self.new_height, transactions=self.block_txn_ids)
|
|
self.models.store_pre_commit_state(pre_commit_state)
|
|
|
|
block_txn_hash = calculate_hash(self.block_txn_ids)
|
|
block = self.models.get_latest_block()
|
|
|
|
logger.debug("BLOCK: ", block)
|
|
|
|
if self.block_txn_ids:
|
|
self.block_txn_hash = calculate_hash([block["app_hash"], block_txn_hash])
|
|
else:
|
|
self.block_txn_hash = block["app_hash"]
|
|
|
|
validator_update = self.validator.process_block(self.new_height, self.block_transactions)
|
|
|
|
return ResponseEndBlock(validator_updates=validator_update)
|
|
|
|
def commit(self):
|
|
"""Store the new height and along with block hash."""
|
|
|
|
self.abort_if_abci_chain_is_not_synced()
|
|
|
|
data = self.block_txn_hash.encode("utf-8")
|
|
|
|
# register a new block only when new transactions are received
|
|
if self.block_txn_ids:
|
|
self.models.store_bulk_transactions( self.block_transactions)
|
|
|
|
block = Block(app_hash=self.block_txn_hash, height=self.new_height, transactions=self.block_txn_ids)
|
|
# NOTE: storing the block should be the last operation during commit
|
|
# this effects crash recovery. Refer BEP#8 for details
|
|
self.models.store_block(block._asdict())
|
|
|
|
logger.debug(
|
|
"Commit-ing new block with hash: apphash=%s ," "height=%s, txn ids=%s",
|
|
data,
|
|
self.new_height,
|
|
self.block_txn_ids,
|
|
)
|
|
|
|
if self.events_queue:
|
|
event = Event(
|
|
EventTypes.BLOCK_VALID,
|
|
{"height": self.new_height, "hash": self.block_txn_hash, "transactions": self.block_transactions},
|
|
)
|
|
self.events_queue.put(event)
|
|
|
|
return ResponseCommit(data=data)
|
|
|