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import sqlite3
from datetime import datetime
class CanaryDB:
def __init__(self, filename):
self.conn = sqlite3.connect(filename, detect_types=sqlite3.PARSE_DECLTYPES|sqlite3.PARSE_COLNAMES)
# Create Tables if necessary
cursor = self.conn.cursor()
cursor.execute("CREATE TABLE IF NOT EXISTS pings (address, uuid, timesent timestamp, timereceived timestamp)")
def close(self):
self.conn.close()
def ping(self, address, time, uuid):
cursor = self.conn.cursor()
cursor.execute("INSERT INTO pings (address, timesent, uuid) VALUES (?, ?, ?)", \
(address, time, uuid))
self.conn.commit()
def pong(self, address, time, uuid):
cursor = self.conn.cursor()
cursor.execute("UPDATE pings SET timereceived=? WHERE address=? AND uuid=?", \
(time, address, uuid))
self.conn.commit()
def get_missing_pongs(self):
'''Return a list of tupls of missing pongs.
Each tupl contains (uuid, address, time since send)'''
cursor = self.conn.cursor()
cursor.execute("SELECT uuid, address, timesent FROM pings WHERE timereceived IS NULL");
now = datetime.now()
results = list()
for row in cursor:
uuid = row[0]
address = row[1]
delta = now - row[2]
results.append((uuid, address, delta))
return results
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