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Removes sleep flag from Watcher and Responder

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The sleep flag was used to avoid doing useless work when no data was hold by the tower. However, from the implementation of the data persistence on, the Watcher and Responder should at least keep track of the last known block. The current apporach was making this harder.
This commit is contained in:
Sergi Delgado Segura
2020-02-10 16:19:22 +01:00
parent 6c957b067d
commit aa12fa2cf8
4 changed files with 50 additions and 151 deletions
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56
pisa/chain_monitor.py
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@@ -19,6 +19,10 @@ class ChainMonitor:
The :class:`ChainMonitor` monitors the chain using two methods: ``zmq`` and ``polling``. Blocks are only notified
once per queue and the notification is triggered by the method that detects the block faster.
Args:
watcher_queue (:obj:`Queue`): the queue to be used to send blocks hashes to the ``Watcher``.
responder_queue (:obj:`Queue`): the queue to be used to send blocks hashes to the ``Responder``.
Attributes:
best_tip (:obj:`str`): a block hash representing the current best tip.
last_tips (:obj:`list`): a list of last chain tips. Used as a sliding window to avoid notifying about old tips.
@@ -30,11 +34,9 @@ class ChainMonitor:
watcher_queue (:obj:`Queue`): a queue to send new best tips to the :obj:`Watcher <pisa.watcher.Watcher>`.
responder_queue (:obj:`Queue`): a queue to send new best tips to the
:obj:`Responder <pisa.responder.Responder>`.
watcher_asleep (:obj:`bool`): a flag that signals whether to send information to the ``Watcher`` or not.
responder_asleep (:obj:`bool`): a flag that signals whether to send information to the ``Responder`` or not.
"""
def __init__(self):
def __init__(self, watcher_queue, responder_queue):
self.best_tip = None
self.last_tips = []
self.terminate = False
@@ -48,53 +50,21 @@ class ChainMonitor:
self.zmqSubSocket.setsockopt_string(zmq.SUBSCRIBE, "hashblock")
self.zmqSubSocket.connect("%s://%s:%s" % (FEED_PROTOCOL, FEED_ADDR, FEED_PORT))
self.watcher_queue = None
self.responder_queue = None
self.watcher_asleep = True
self.responder_asleep = True
def attach_watcher(self, queue, asleep):
"""
Attaches a :obj:`Watcher <pisa.watcher.Watcher>` to the :class:`ChainMonitor`. The ``Watcher`` and the
``ChainMonitor`` are connected via the ``watcher_queue`` and the ``watcher_asleep`` flag.
Args:
queue (:obj:`Queue`): the queue to be used to send blocks hashes to the ``Watcher``.
asleep( :obj:`bool`): whether the ``Watcher`` is initially awake or asleep. It is changed on the fly from
the ``Watcher`` when the state changes.
"""
self.watcher_queue = queue
self.watcher_asleep = asleep
def attach_responder(self, queue, asleep):
"""
Attaches a :obj:`Responder <pisa.responder.Responder>` to the :class:`ChainMonitor`. The ``Responder`` and the
``ChainMonitor`` are connected via the ``responder_queue`` and the ``responder_asleep`` flag.
Args:
queue (:obj:`Queue`): the queue to be used to send blocks hashes to the ``Responder``.
asleep( :obj:`bool`): whether the ``Responder`` is initially awake or asleep. It is changed on the fly from
the ``Responder`` when the state changes.
"""
self.responder_queue = queue
self.responder_asleep = asleep
self.watcher_queue = watcher_queue
self.responder_queue = responder_queue
def notify_subscribers(self, block_hash):
"""
Notifies the subscribers (``Watcher`` and ``Responder``) about a new block provided they are awake. It does so
by putting the hash in the corresponding queue(s).
Notifies the subscribers (``Watcher`` and ``Responder``) about a new block. It does so by putting the hash in
the corresponding queue(s).
Args:
block_hash (:obj:`str`): the new block hash to be sent to the awake subscribers.
block_hash (:obj:`str`): the new block hash to be sent to the subscribers.
block_hash (:obj:`str`): the new block hash to be sent to the subscribers.
"""
if not self.watcher_asleep:
self.watcher_queue.put(block_hash)
if not self.responder_asleep:
self.responder_queue.put(block_hash)
self.watcher_queue.put(block_hash)
self.responder_queue.put(block_hash)
def update_state(self, block_hash, max_block_window_size=BLOCK_WINDOW_SIZE):
"""