docker/lnt-wait-db

#!/usr/bin/env python

import sys
import sqlalchemy

if len(sys.argv) != 2:
    raise "Missing db path for lnt-wait-db"

db = sys.argv[1]
engine = sqlalchemy.create_engine(db)
started = False

while not started:
    try:
        engine.execute("SELECT 1")
        started = True
    except Exception as inst:
        pass