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use single_call_context for claim_search and resolve

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Jack Robison 2020-10-18 21:02:19 -04:00
parent 2faa29b1c4
commit 76946c447f
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GPG key ID: DF25C68FE0239BB2
2 changed files with 124 additions and 28 deletions
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100
lbry/wallet/ledger.py
View file

@ -29,7 +29,6 @@ from .constants import TXO_TYPES, CLAIM_TYPES, COIN, NULL_HASH32
from .bip32 import PubKey, PrivateKey
from .coinselection import CoinSelector
log = logging.getLogger(__name__)
LedgerType = Type['BaseLedger']
@ -687,6 +686,59 @@ class Ledger(metaclass=LedgerRegistry):
tx.position = merkle['pos']
tx.is_verified = merkle_root == header['merkle_root']
async def request_transactions_for_inflate(self, to_request: Tuple[Tuple[str, int], ...], session_override=None):
header_cache = {}
batches = [[]]
remote_heights = {}
transactions = []
heights_in_batch = 0
last_height = 0
for txid, height in sorted(to_request, key=lambda x: x[1]):
remote_heights[txid] = height
if height != last_height:
heights_in_batch += 1
last_height = height
if len(batches[-1]) == 100 or heights_in_batch == 20:
batches.append([])
heights_in_batch = 1
batches[-1].append(txid)
if not batches[-1]:
batches.pop()
async def _single_batch(batch):
if session_override:
batch_result = await self.network.get_transaction_batch(
batch, restricted=False, session=session_override
)
else:
batch_result = await self.network.retriable_call(self.network.get_transaction_batch, batch)
for txid, (raw, merkle) in batch_result.items():
remote_height = remote_heights[txid]
merkle_height = merkle['block_height']
cache_item = self._tx_cache.get(txid)
if cache_item is None:
cache_item = TransactionCacheItem()
self._tx_cache[txid] = cache_item
tx = cache_item.tx or Transaction(unhexlify(raw), height=remote_height)
tx.height = remote_height
cache_item.tx = tx
if 'merkle' in merkle and remote_heights[txid] > 0:
merkle_root = self.get_root_of_merkle_tree(merkle['merkle'], merkle['pos'], tx.hash)
try:
header = header_cache.get(remote_heights[txid]) or (await self.headers.get(merkle_height))
except IndexError:
log.warning("failed to verify %s at height %i", tx.id, merkle_height)
else:
header_cache[remote_heights[txid]] = header
tx.position = merkle['pos']
tx.is_verified = merkle_root == header['merkle_root']
transactions.append(tx)
for batch in batches:
await _single_batch(batch)
return transactions
async def _request_transaction_batch(self, to_request, remote_history_size, address):
header_cache = {}
batches = [[]]
@ -844,14 +896,17 @@ class Ledger(metaclass=LedgerRegistry):
include_is_my_output=False,
include_sent_supports=False,
include_sent_tips=False,
include_received_tips=False) -> Tuple[List[Output], dict, int, int]:
include_received_tips=False,
session_override=None) -> Tuple[List[Output], dict, int, int]:
encoded_outputs = await query
outputs = Outputs.from_base64(encoded_outputs or b'') # TODO: why is the server returning None?
txs = []
if len(outputs.txs) > 0:
txs: List[Transaction] = await asyncio.gather(*(
self.cache_transaction(*tx) for tx in outputs.txs
))
txs: List[Transaction] = []
if session_override:
txs.extend((await self.request_transactions_for_inflate(tuple(outputs.txs), session_override)))
else:
txs.extend((await asyncio.gather(*(self.cache_transaction(*tx) for tx in outputs.txs))))
_txos, blocked = outputs.inflate(txs)
@ -924,15 +979,28 @@ class Ledger(metaclass=LedgerRegistry):
return txos, blocked, outputs.offset, outputs.total
async def resolve(self, accounts, urls, new_sdk_server=None, **kwargs):
if new_sdk_server:
resolve = partial(self.network.new_resolve, new_sdk_server)
else:
resolve = partial(self.network.retriable_call, self.network.resolve)
urls_copy = list(urls)
txos = []
urls_copy = list(urls)
if new_sdk_server:
resolve = partial(self.network.resolve, new_sdk_server)
while urls_copy:
batch, urls_copy = urls_copy[:500], urls_copy[500:]
txos.extend((await self._inflate_outputs(resolve(batch), accounts, **kwargs))[0])
txos.extend(
(await self._inflate_outputs(
resolve(batch), accounts, **kwargs
))[0]
)
else:
async with self.network.single_call_context(self.network.resolve) as (resolve, session):
while urls_copy:
batch, urls_copy = urls_copy[:500], urls_copy[500:]
txos.extend(
(await self._inflate_outputs(
resolve(batch), accounts, session_override=session, **kwargs
))[0]
)
assert len(urls) == len(txos), "Mismatch between urls requested for resolve and responses received."
result = {}
for url, txo in zip(urls, txos):
@ -953,12 +1021,16 @@ class Ledger(metaclass=LedgerRegistry):
new_sdk_server=None, **kwargs) -> Tuple[List[Output], dict, int, int]:
if new_sdk_server:
claim_search = partial(self.network.new_claim_search, new_sdk_server)
else:
claim_search = self.network.claim_search
return await self._inflate_outputs(
claim_search(**kwargs), accounts,
include_purchase_receipt=include_purchase_receipt,
include_is_my_output=include_is_my_output
include_is_my_output=include_is_my_output,
)
async with self.network.single_call_context(self.network.claim_search) as (claim_search, session):
return await self._inflate_outputs(
claim_search(**kwargs), accounts, session_override=session,
include_purchase_receipt=include_purchase_receipt,
include_is_my_output=include_is_my_output,
)
async def get_claim_by_claim_id(self, accounts, claim_id, **kwargs) -> Output:

40
lbry/wallet/network.py
View file

@ -3,6 +3,8 @@ import asyncio
import json
from time import perf_counter
from operator import itemgetter
from contextlib import asynccontextmanager
from functools import partial
from typing import Dict, Optional, Tuple
import aiohttp
@ -230,8 +232,8 @@ class Network:
def is_connected(self):
return self.client and not self.client.is_closing()
def rpc(self, list_or_method, args, restricted=True):
session = self.client if restricted else self.session_pool.fastest_session
def rpc(self, list_or_method, args, restricted=True, session=None):
session = session or (self.client if restricted else self.session_pool.fastest_session)
if session and not session.is_closing():
return session.send_request(list_or_method, args)
else:
@ -253,6 +255,28 @@ class Network:
pass
raise asyncio.CancelledError() # if we got here, we are shutting down
@asynccontextmanager
async def single_call_context(self, function, *args, **kwargs):
if not self.is_connected:
log.warning("Wallet server unavailable, waiting for it to come back and retry.")
await self.on_connected.first
await self.session_pool.wait_for_fastest_session()
server = self.session_pool.fastest_session.server
session = ClientSession(network=self, server=server)
async def call_with_reconnect(*a, **kw):
while self.running:
if not session.available:
await session.create_connection()
try:
return await partial(function, *args, session_override=session, **kwargs)(*a, **kw)
except asyncio.TimeoutError:
log.warning("'%s' failed, retrying", function.__name__)
try:
yield (call_with_reconnect, session)
finally:
await session.close()
def _update_remote_height(self, header_args):
self.remote_height = header_args[0]["height"]
@ -261,9 +285,9 @@ class Network:
restricted = known_height in (None, -1, 0) or 0 > known_height > self.remote_height - 10
return self.rpc('blockchain.transaction.get', [tx_hash], restricted)
def get_transaction_batch(self, txids):
def get_transaction_batch(self, txids, restricted=True, session=None):
# use any server if its old, otherwise restrict to who gave us the history
return self.rpc('blockchain.transaction.get_batch', txids, True)
return self.rpc('blockchain.transaction.get_batch', txids, restricted, session)
def get_transaction_and_merkle(self, tx_hash, known_height=None):
# use any server if its old, otherwise restrict to who gave us the history
@ -316,11 +340,11 @@ class Network:
def get_claims_by_ids(self, claim_ids):
return self.rpc('blockchain.claimtrie.getclaimsbyids', claim_ids)
def resolve(self, urls):
return self.rpc('blockchain.claimtrie.resolve', urls)
def resolve(self, urls, session_override=None):
return self.rpc('blockchain.claimtrie.resolve', urls, False, session_override)
def claim_search(self, **kwargs):
return self.rpc('blockchain.claimtrie.search', kwargs)
def claim_search(self, session_override=None, **kwargs):
return self.rpc('blockchain.claimtrie.search', kwargs, False, session_override)
async def new_resolve(self, server, urls):
message = {"method": "resolve", "params": {"urls": urls, "protobuf": True}}