def __init__(self, felix_sck):
# Wrap the socket with our protocol reader/writer objects.
self._msg_reader = MessageReader(felix_sck)
self._msg_writer = MessageWriter(felix_sck)
# Global stop event used to signal to all threads to stop.
self._stop_event = Event()
# Threads to own the connection from/to Felix. The resync thread
# is responsible for doing resyncs and merging updates from the
# watcher thread (which it manages).
self._reader_thread = Thread(target=self._read_from_socket,
name="reader-thread")
self._reader_thread.daemon = True
self._resync_thread = Thread(target=self._resync_and_merge,
name="resync-thread")
self._resync_thread.daemon = True
self._watcher_thread = None # Created on demand
self._watcher_stop_event = None
self._watcher_start_index = None
# High-water mark cache. Owned by resync thread.
self._hwms = HighWaterTracker()
self._first_resync = True
self._resync_http_pool = None
self._cluster_id = None
# Resync thread stats.
self._snap_keys_processed = RateStat("snapshot keys processed")
self._event_keys_processed = RateStat("event keys processed")
self._felix_updates_sent = RateStat("felix updates sent")
self._resync_stats = [
self._snap_keys_processed,
self._event_keys_processed,
self._felix_updates_sent,
]
self._last_resync_stat_log_time = monotonic_time()
# Set by the reader thread once the init message has been received
# from Felix.
self._init_received = Event()
# Initial config, received in the init message.
self._etcd_base_url = None
self._etcd_other_urls = []
# Lock for the etcd url fields: this is the only lock, and no thread
# ever recursively acquires it, so it cannot deadlock. Must be locked
# to access the _etcd_base_url and _etcd_other_urls fields (after they
# are initialized).
self._etcd_url_lock = Lock()
self._hostname = None
# Set by the reader thread once the logging config has been received
# from Felix. Triggers the first resync.
self._config_received = Event()
# Flag to request a resync. Set by the reader thread, polled by the
# resync and merge thread.
self._resync_requested = False
def setUp(self):
super(TestRateStat, self).setUp()
self.stat = RateStat("foo")
