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Adds basic ChainMonitor to the system

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ChainMonitor is the actor in charge of checking new blocks. It improves from the previous zmq_subscriber by also doing polling and, therefore, making sure that no blocks are missed.

Documentation and tests are still required. Partially covers #31
This commit is contained in:
Sergi Delgado Segura
2020-01-02 16:15:27 +01:00
parent 747f4bb888
commit 8fab59975f
5 changed files with 112 additions and 72 deletions
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23
pisa/responder.py
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@@ -6,7 +6,6 @@ from common.logger import Logger
from pisa.cleaner import Cleaner
from pisa.carrier import Carrier
from pisa.block_processor import BlockProcessor
from pisa.utils.zmq_subscriber import ZMQSubscriber
CONFIRMATIONS_BEFORE_RETRY = 6
MIN_CONFIRMATIONS = 6
@@ -135,14 +134,14 @@ class Responder:
"""
def __init__(self, db_manager):
def __init__(self, db_manager, chain_monitor):
self.trackers = dict()
self.tx_tracker_map = dict()
self.unconfirmed_txs = []
self.missed_confirmations = dict()
self.asleep = True
self.block_queue = Queue()
self.zmq_subscriber = None
self.chain_monitor = chain_monitor
self.db_manager = db_manager
@staticmethod
@@ -260,19 +259,8 @@ class Responder:
if self.asleep:
self.asleep = False
zmq_thread = Thread(target=self.do_subscribe)
responder = Thread(target=self.do_watch)
zmq_thread.start()
responder.start()
def do_subscribe(self):
"""
Initializes a :obj:`ZMQSubscriber <pisa.utils.zmq_subscriber.ZMQSubscriber>` instance to listen to new blocks
from ``bitcoind``. Block ids are received trough the ``block_queue``.
"""
self.zmq_subscriber = ZMQSubscriber(parent="Responder")
self.zmq_subscriber.handle(self.block_queue)
self.chain_monitor.responder_asleep = False
Thread(target=self.do_watch).start()
def do_watch(self):
"""
@@ -327,8 +315,7 @@ class Responder:
# Go back to sleep if there are no more pending trackers
self.asleep = True
self.zmq_subscriber.terminate = True
self.block_queue = Queue()
self.chain_monitor.responder_asleep = True
logger.info("No more pending trackers, going back to sleep")