forked from LBRYCommunity/lbry-sdk
260 lines
9 KiB
Python
260 lines
9 KiB
Python
import os
|
|
import asyncio
|
|
import logging
|
|
from typing import List, Optional, Tuple, NamedTuple
|
|
|
|
from lbry.db import Database
|
|
from lbry.db.constants import TXO_TYPES
|
|
from lbry.schema.result import Censor
|
|
from lbry.blockchain.transaction import Transaction, Output
|
|
from lbry.blockchain.ledger import Ledger
|
|
from lbry.wallet import WalletManager, AddressManager
|
|
from lbry.event import EventController
|
|
|
|
log = logging.getLogger(__name__)
|
|
|
|
|
|
class BlockEvent(NamedTuple):
|
|
height: int
|
|
|
|
|
|
class Sync:
|
|
|
|
def __init__(self, service: 'Service'):
|
|
self.service = service
|
|
|
|
self._on_block_controller = EventController()
|
|
self.on_block = self._on_block_controller.stream
|
|
|
|
self._on_progress_controller = EventController()
|
|
self.on_progress = self._on_progress_controller.stream
|
|
|
|
self._on_ready_controller = EventController()
|
|
self.on_ready = self._on_ready_controller.stream
|
|
|
|
def on_bulk_started(self):
|
|
return self.on_progress.where() # filter for bulk started event
|
|
|
|
def on_bulk_started(self):
|
|
return self.on_progress.where() # filter for bulk started event
|
|
|
|
def on_bulk_finished(self):
|
|
return self.on_progress.where() # filter for bulk finished event
|
|
|
|
async def start(self):
|
|
raise NotImplementedError
|
|
|
|
async def stop(self):
|
|
raise NotImplementedError
|
|
|
|
|
|
class Service:
|
|
"""
|
|
Base class for light client and full node LBRY service implementations.
|
|
"""
|
|
|
|
sync: Sync
|
|
|
|
def __init__(self, ledger: Ledger, db_url: str):
|
|
self.ledger, self.conf = ledger, ledger.conf
|
|
self.db = Database(ledger, db_url)
|
|
self.wallets = WalletManager(ledger, self.db)
|
|
|
|
#self.on_address = sync.on_address
|
|
#self.accounts = sync.accounts
|
|
#self.on_header = sync.on_header
|
|
#self.on_ready = sync.on_ready
|
|
#self.on_transaction = sync.on_transaction
|
|
|
|
# sync has established connection with a source from which it can synchronize
|
|
# for full service this is lbrycrd (or sync service) and for light this is full node
|
|
self._on_connected_controller = EventController()
|
|
self.on_connected = self._on_connected_controller.stream
|
|
|
|
async def start(self):
|
|
await self.db.open()
|
|
await self.wallets.ensure_path_exists()
|
|
await self.wallets.load()
|
|
await self.sync.start()
|
|
|
|
async def stop(self):
|
|
await self.sync.stop()
|
|
await self.db.close()
|
|
|
|
def get_status(self):
|
|
pass
|
|
|
|
def get_version(self):
|
|
pass
|
|
|
|
async def find_ffmpeg(self):
|
|
pass
|
|
|
|
async def get(self, uri, **kwargs):
|
|
pass
|
|
|
|
async def get_block_address_filters(self):
|
|
raise NotImplementedError
|
|
|
|
async def get_transaction_address_filters(self, block_hash):
|
|
raise NotImplementedError
|
|
|
|
def create_wallet(self, file_name):
|
|
path = os.path.join(self.conf.wallet_dir, file_name)
|
|
return self.wallet_manager.import_wallet(path)
|
|
|
|
async def get_addresses(self, **constraints):
|
|
return await self.db.get_addresses(**constraints)
|
|
|
|
def reserve_outputs(self, txos):
|
|
return self.db.reserve_outputs(txos)
|
|
|
|
def release_outputs(self, txos):
|
|
return self.db.release_outputs(txos)
|
|
|
|
def release_tx(self, tx):
|
|
return self.release_outputs([txi.txo_ref.txo for txi in tx.inputs])
|
|
|
|
def get_utxos(self, **constraints):
|
|
self.constraint_spending_utxos(constraints)
|
|
return self.db.get_utxos(**constraints)
|
|
|
|
async def get_txos(self, resolve=False, **constraints) -> List[Output]:
|
|
txos = await self.db.get_txos(**constraints)
|
|
if resolve:
|
|
return await self._resolve_for_local_results(constraints.get('accounts', []), txos)
|
|
return txos
|
|
|
|
def get_txo_sum(self, **constraints):
|
|
return self.db.get_txo_sum(**constraints)
|
|
|
|
def get_txo_plot(self, **constraints):
|
|
return self.db.get_txo_plot(**constraints)
|
|
|
|
def get_transactions(self, **constraints):
|
|
return self.db.get_transactions(**constraints)
|
|
|
|
async def get_transaction(self, tx_hash: bytes):
|
|
tx = await self.db.get_transaction(tx_hash=tx_hash)
|
|
if tx:
|
|
return tx
|
|
try:
|
|
raw, merkle = await self.ledger.network.get_transaction_and_merkle(tx_hash)
|
|
except CodeMessageError as e:
|
|
if 'No such mempool or blockchain transaction.' in e.message:
|
|
return {'success': False, 'code': 404, 'message': 'transaction not found'}
|
|
return {'success': False, 'code': e.code, 'message': e.message}
|
|
height = merkle.get('block_height')
|
|
tx = Transaction(unhexlify(raw), height=height)
|
|
if height and height > 0:
|
|
await self.ledger.maybe_verify_transaction(tx, height, merkle)
|
|
return tx
|
|
|
|
async def search_transactions(self, txids):
|
|
raise NotImplementedError
|
|
|
|
async def announce_addresses(self, address_manager: AddressManager, addresses: List[str]):
|
|
await self.ledger.announce_addresses(address_manager, addresses)
|
|
|
|
async def get_address_manager_for_address(self, address) -> Optional[AddressManager]:
|
|
details = await self.db.get_address(address=address)
|
|
for account in self.accounts:
|
|
if account.id == details['account']:
|
|
return account.address_managers[details['chain']]
|
|
return None
|
|
|
|
async def reset(self):
|
|
self.ledger.config = {
|
|
'auto_connect': True,
|
|
'default_servers': self.config.lbryum_servers,
|
|
'data_path': self.config.wallet_dir,
|
|
}
|
|
await self.ledger.stop()
|
|
await self.ledger.start()
|
|
|
|
async def get_best_blockhash(self):
|
|
if len(self.ledger.headers) <= 0:
|
|
return self.ledger.genesis_hash
|
|
return (await self.ledger.headers.hash(self.ledger.headers.height)).decode()
|
|
|
|
async def broadcast_or_release(self, tx, blocking=False):
|
|
try:
|
|
await self.broadcast(tx)
|
|
if blocking:
|
|
await self.wait(tx, timeout=None)
|
|
except:
|
|
await self.release_tx(tx)
|
|
raise
|
|
|
|
async def broadcast(self, tx):
|
|
raise NotImplementedError
|
|
|
|
async def wait(self, tx: Transaction, height=-1, timeout=1):
|
|
raise NotImplementedError
|
|
|
|
async def resolve(self, accounts, urls, **kwargs):
|
|
raise NotImplementedError
|
|
|
|
async def search_claims(self, accounts, **kwargs) -> Tuple[List[Output], Optional[int], Censor]:
|
|
raise NotImplementedError
|
|
|
|
async def get_claim_by_claim_id(self, accounts, claim_id, **kwargs) -> Output:
|
|
for claim in (await self.search_claims(accounts, claim_id=claim_id, **kwargs))[0]:
|
|
return claim
|
|
|
|
@staticmethod
|
|
def constraint_spending_utxos(constraints):
|
|
constraints['txo_type__in'] = (0, TXO_TYPES['purchase'])
|
|
|
|
async def get_purchases(self, wallet, resolve=False, **constraints):
|
|
purchases = await wallet.get_purchases(**constraints)
|
|
if resolve:
|
|
claim_ids = [p.purchased_claim_id for p in purchases]
|
|
try:
|
|
resolved, _, _, _ = await self.claim_search([], claim_ids=claim_ids)
|
|
except Exception as err:
|
|
if isinstance(err, asyncio.CancelledError): # TODO: remove when updated to 3.8
|
|
raise
|
|
log.exception("Resolve failed while looking up purchased claim ids:")
|
|
resolved = []
|
|
lookup = {claim.claim_id: claim for claim in resolved}
|
|
for purchase in purchases:
|
|
purchase.purchased_claim = lookup.get(purchase.purchased_claim_id)
|
|
return purchases
|
|
|
|
async def _resolve_for_local_results(self, accounts, txos):
|
|
results = []
|
|
response = await self.resolve(
|
|
accounts, [txo.permanent_url for txo in txos if txo.can_decode_claim]
|
|
)
|
|
for txo in txos:
|
|
resolved = response.get(txo.permanent_url) if txo.can_decode_claim else None
|
|
if isinstance(resolved, Output):
|
|
resolved.update_annotations(txo)
|
|
results.append(resolved)
|
|
else:
|
|
if isinstance(resolved, dict) and 'error' in resolved:
|
|
txo.meta['error'] = resolved['error']
|
|
results.append(txo)
|
|
return results
|
|
|
|
async def resolve_collection(self, collection, offset=0, page_size=1):
|
|
claim_ids = collection.claim.collection.claims.ids[offset:page_size+offset]
|
|
try:
|
|
resolve_results, _, _, _ = await self.claim_search([], claim_ids=claim_ids)
|
|
except Exception as err:
|
|
if isinstance(err, asyncio.CancelledError): # TODO: remove when updated to 3.8
|
|
raise
|
|
log.exception("Resolve failed while looking up collection claim ids:")
|
|
return []
|
|
claims = []
|
|
for claim_id in claim_ids:
|
|
found = False
|
|
for txo in resolve_results:
|
|
if txo.claim_id == claim_id:
|
|
claims.append(txo)
|
|
found = True
|
|
break
|
|
if not found:
|
|
claims.append(None)
|
|
return claims
|