Synnefo

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from dbworker import DBWorker

class Policy(DBWorker):

    """Paths can be assigned key, value pairs, representing policy."""

    def __init__(self, **params):

        DBWorker.__init__(self, **params)

        execute = self.execute

        execute(""" create table if not exists policy

                          ( path  text,

                            key   text,

                            value text,

                            primary key (path, key) ) """)

    def policy_set(self, path, policy):

        q = "insert or replace into policy (path, key, value) values (?, ?, ?)"

        self.executemany(q, ((path, k, v) for k, v in policy.iteritems()))

    def policy_unset(self, path):

        q = "delete from policy where path = ?"

        self.execute(q, (path,))

    def policy_get(self, path):

        q = "select key, value from policy where path = ?"

        self.execute(q, (path,))

        return dict(self.fetchall())