def insertRuleset(self, ruleset, domain):
		'''增加一个robots.txt规则集'''
		cur = self.conn.cursor()
		cur.execute("SELECT did FROM Domains WHERE domain=?", (domain,))
		did = cur.fetchone()[0]
		cur.execute("INSERT INTO Rulesets VALUES (NULL,?,?)",(did, ruleset))
		# 写入到文件
		self.conn.commit()
def _PostCreate(self):
    """Set the retention policy."""
    put_cmd = util.AWS_PREFIX + [
        '--region', self.region,
        'logs', 'put-retention-policy',
        '--log-group-name', self.name,
        '--retention-in-days', str(self.retention_in_days)
    ]
    vm_util.IssueCommand(put_cmd)