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changefeed.py
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changefeed.py
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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
PoC for subscriptions with rethinkdb tables and documents
https://rethinkdb.com/docs/changefeeds/python/
"""
import rethinkdb as r
import sys
from beeprint import pp
# variables
host = 'rdb'
db = 'mydb'
table = 'mytable'
# connect and create
r.connect(host=host).repl()
if db not in r.db_list().run():
r.db_create(db).run()
if table not in r.db(db).table_list().run():
r.db(db).table_create(table).run()
# implement actions
query = r.db(db).table(table)
if len(sys.argv) > 1:
command = sys.argv[1]
if command == 'changefeed':
try:
for change in query.changes().run():
print("Subscription update!")
pp(change)
except Exception as e:
print("Table removed or connection aborted")
elif command == 'insert':
query.insert({'key1': 'value1', 'key2': 'value2'}).run()
elif command == 'update':
query.filter({'key1': 'value1'}).update({'key1': 'UPDATED!'}).run()
elif command == 'clear':
r.db_drop(db).run()