145 lines
4.8 KiB
Python
145 lines
4.8 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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records = self.driver._run('''select name, metadata from Queues where
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tenant = ?''', tenant)
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for k, v in records:
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yield {'name': k, 'metadata': v}
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def get(self, name, tenant):
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sql = '''select metadata from Queues where
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tenant = ? and name = ?'''
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try:
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return json.loads(self.driver._get(sql, tenant, name)[0])
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except TypeError:
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msg = (_("Queue %(name)s does not exist for tenant %(tenant)s")
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% dict(name=name, tenant=tenant))
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raise exceptions.DoesNotExist(msg)
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def upsert(self, name, metadata, tenant):
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with self.driver:
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sql_select = '''select metadata from Queues where
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tenant = ? and name = ?'''
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previous_record = self.driver._get(sql_select, tenant, name)
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sql_replace = '''replace into Queues
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values (null, ?, ?, ?)'''
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doc = json.dumps(metadata, ensure_ascii=False)
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self.driver._run(sql_replace, tenant, name, doc)
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return previous_record is None
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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 = ?''',
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tenant, name)
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def stats(self, name, tenant):
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sql = '''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 = ?)'''
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return {
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'messages': self.driver._get(sql, tenant, name)[0],
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'actions': 0,
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}
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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('''
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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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''')
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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 = ?''',
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tenant, queue)
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except TypeError:
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msg = (_("Queue %(name)s does not exist for tenant %(tenant)s")
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% dict(name=queue, tenant=tenant))
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raise exceptions.DoesNotExist(msg)
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# executemany() sets lastrowid to None, so no matter we manually
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# generate the IDs or not, we still need to query for it.
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try:
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unused, = self.driver._get('''select id + 1 from Messages
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where id = (select max(id)
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from Messages)''')
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except TypeError:
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unused, = 1001,
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def it(newid):
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for m in messages:
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yield (newid, qid, m['ttl'],
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json.dumps(m, ensure_ascii=False))
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newid += 1
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self.driver._run_multiple('''insert into Messages values
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(?, ?, ?, ?, datetime())''',
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it(unused))
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return [str(x) for x in range(unused, unused + len(messages))]
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def delete(self, queue, message_id, tenant=None, claim=None):
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pass
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