def __init__(self,
chain: AsyncChainAPI,
db: BaseAsyncHeaderDB,
peer_pool: LESPeerPool,
token: CancelToken = None) -> None:
super().__init__(token=token)
self._db = db
self._header_syncer = LightHeaderChainSyncer(chain, db, peer_pool, token=self.cancel_token)
class LightChainSyncer(BaseService):
def __init__(self,
chain: AsyncChainAPI,
db: BaseAsyncHeaderDB,
peer_pool: LESPeerPool,
token: CancelToken = None) -> None:
super().__init__(token=token)
self._db = db
self._header_syncer = LightHeaderChainSyncer(chain,
db,
peer_pool,
token=self.cancel_token)
async def _run(self) -> None:
head = await self.wait(self._db.coro_get_canonical_head())
self.logger.info("Starting light sync; current head: %s", head)
self.run_daemon(self._header_syncer)
self.run_daemon_task(self._persist_headers())
# run sync until cancelled
await self.events.cancelled.wait()
async def _persist_headers(self) -> None:
async for headers in self._header_syncer.new_sync_headers():
self._header_syncer._chain.validate_chain_extension(headers)
timer = Timer()
await self.wait(self._db.coro_persist_header_chain(headers))
head = await self.wait(self._db.coro_get_canonical_head())
self.logger.info(
"Imported %d headers in %0.2f seconds, new head: %s",
len(headers), timer.elapsed, head)
class LightChainSyncer(Service):
def __init__(self, chain: AsyncChainAPI, db: BaseAsyncHeaderDB,
peer_pool: LESPeerPool) -> None:
self.logger = get_logger('trinity.sync.light.chain.LightChainSyncer')
self._db = db
self._header_syncer = LightHeaderChainSyncer(chain, db, peer_pool)
async def run(self) -> None:
head = await self._db.coro_get_canonical_head()
self.logger.info("Starting light sync; current head: %s", head)
self.manager.run_daemon_child_service(self._header_syncer)
self.manager.run_daemon_task(self._persist_headers)
# run sync until cancelled
await self.manager.wait_finished()
async def _persist_headers(self) -> None:
async for headers in self._header_syncer.new_sync_headers():
self._header_syncer._chain.validate_chain_extension(headers)
timer = Timer()
await self._db.coro_persist_header_chain(headers)
head = await self._db.coro_get_canonical_head()
self.logger.info(
"Imported %d headers in %0.2f seconds, new head: %s",
len(headers), timer.elapsed, head)
def __init__(self, chain: AsyncChainAPI, db: BaseAsyncHeaderDB,
peer_pool: LESPeerPool) -> None:
self.logger = get_logger('trinity.sync.light.chain.LightChainSyncer')
self._db = db
self._header_syncer = LightHeaderChainSyncer(chain, db, peer_pool)