2b40336eeb
Implements: blueprint storage-reference Change-Id: I7b270208344e76a892e3bead764ba8b68fabca4d
116 lines
3.9 KiB
Python
116 lines
3.9 KiB
Python
# Copyright (c) 2013 Rackspace, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import json
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from marconi.storage import base
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from marconi.storage import exceptions
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class Queue(base.QueueBase):
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def __init__(self, driver):
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self.driver = driver
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self.driver._run('''create table if not exists Queues (
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id INTEGER,
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tenant TEXT,
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name TEXT,
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metadata TEXT,
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PRIMARY KEY(id),
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UNIQUE(tenant, name)
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)''')
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self.driver._run('''create unique index if not exists Paths on Queues (
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tenant, name
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)''')
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def list(self, tenant):
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ans = []
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for rec in self.driver._run('''select name from Queues where
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tenant = ?''', tenant):
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ans.append(rec[0])
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return ans
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def get(self, name, tenant):
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try:
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return json.loads(
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self.driver._get('''select metadata from Queues where
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tenant = ? and name = ?''', tenant, name)[0])
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except TypeError:
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raise exceptions.DoesNotExist('/'.join([tenant, 'queues', name]))
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def upsert(self, name, metadata, tenant):
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with self.driver:
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rc = self.driver._get('''select metadata from Queues where
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tenant = ? and name = ?''', tenant, name) is None
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self.driver._run('''replace into Queues values
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(null, ?, ?, ?)''', tenant, name,
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json.dumps(metadata))
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return rc
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def delete(self, name, tenant):
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self.driver._run('''delete from Queues where
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tenant = ? and name = ?''', tenant, name)
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def stats(self, name, tenant):
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return {'messages': self.driver._get('''select count(id)
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from Messages where
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qid = (select id from Queues where
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tenant = ? and name = ?)''', tenant, name)[0],
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'actions': 0}
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def actions(self, name, tenant, marker=None, limit=10):
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pass
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class Message(base.MessageBase):
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def __init__(self, driver):
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self.driver = driver
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self.driver._run('''create table if not exists Messages (
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id INTEGER,
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qid INTEGER,
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ttl INTEGER,
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content TEXT,
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created DATETIME,
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PRIMARY KEY(id),
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FOREIGN KEY(qid) references Queues(id) on delete cascade
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)''')
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def get(self, queue, tenant=None, message_id=None,
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marker=None, echo=False, client_uuid=None):
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pass
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def post(self, queue, messages, tenant):
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with self.driver:
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try:
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qid, = self.driver._get('''select id from Queues where
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tenant = ? and name = ?''', tenant, queue)
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except TypeError:
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raise exceptions.DoesNotExist(
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'/'.join([tenant, 'queues', queue]))
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try:
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newid = self.driver._get('''select id + 1 from Messages
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where id = (select max(id) from Messages)''')[0]
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except TypeError:
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newid = 1001
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for m in messages:
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self.driver._run('''insert into Messages values
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(?, ?, ?, ?, datetime())''',
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newid, qid, m['ttl'], json.dumps(m))
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newid += 1
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return [str(x) for x in range(newid - len(messages), newid)]
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def delete(self, queue, message_id, tenant=None, claim=None):
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pass
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