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157 lines
5.4 KiB
Python
157 lines
5.4 KiB
Python
#!/usr/bin/env python
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import os
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import tempfile
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import shutil
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import unittest
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import sqlite3
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import uuid
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class SqliteStore(object):
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"""
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"""
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class DoesNotExist(KeyError):
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""""""
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class AlreadyExists(KeyError):
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""""""
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IDLE = 'Idle'
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OPEN = 'Open'
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ACTIVE = 'Active'
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VERSION = 'DEDUPESTORE VERSION 1'
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def __init__(self, path):
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if not os.path.exists(path):
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self.create(path)
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self.cnx = sqlite3.connect(path)
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self.cursor = self.cnx.cursor()
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self.uuid, self.tid = self.cursor.execute('SELECT uuid, tid FROM system').fetchone()
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self.state = self.OPEN
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def create(self, path):
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cnx = sqlite3.connect(path)
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cnx.execute('PRAGMA auto_vacuum=full')
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cnx.execute('CREATE TABLE objects(ns TEXT NOT NULL, id NOT NULL, data NOT NULL)')
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cnx.execute('CREATE TABLE system(uuid NOT NULL, tid NOT NULL)')
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cnx.execute('INSERT INTO system VALUES(?,?)', (uuid.uuid1().hex, 0))
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cnx.execute('CREATE UNIQUE INDEX objects_pk ON objects(ns, id)')
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def close(self):
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self.cnx.close()
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def commit(self):
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"""
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"""
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self.cursor.execute('UPDATE system SET tid=tid+1')
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import time
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t = time.time()
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self.cnx.commit()
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print time.time() - t
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self.tid += 1
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def rollback(self):
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"""
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"""
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self.cnx.rollback()
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def get(self, ns, id):
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"""
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"""
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self.cursor.execute('SELECT data FROM objects WHERE ns=? and id=?',
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(ns.encode('hex'), id.encode('hex')))
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row = self.cursor.fetchone()
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if row:
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return str(row[0])
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else:
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raise self.DoesNotExist
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def put(self, ns, id, data):
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"""
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"""
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try:
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self.cursor.execute('INSERT INTO objects (ns, id, data) '
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'VALUES(?, ?, ?)',
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(ns.encode('hex'), id.encode('hex'),
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sqlite3.Binary(data)))
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except sqlite3.IntegrityError:
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raise self.AlreadyExists
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def delete(self, ns, id):
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"""
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"""
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self.cursor.execute('DELETE FROM objects WHERE ns=? AND id=?',
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(ns.encode('hex'), id.encode('hex')))
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def list(self, ns, prefix='', marker=None, max_keys=1000000):
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"""
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"""
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condition = ''
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if prefix:
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condition += ' AND id LIKE :prefix'
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if marker:
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condition += ' AND id >= :marker'
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args = dict(ns=ns.encode('hex'), prefix=prefix.encode('hex') + '%',
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marker=marker and marker.encode('hex'))
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for row in self.cursor.execute('SELECT id FROM objects WHERE '
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'ns=:ns ' + condition + ' LIMIT ' + str(max_keys),
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args):
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yield row[0].decode('hex')
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class SqliteStoreTestCase(unittest.TestCase):
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def setUp(self):
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self.tmppath = tempfile.mkdtemp()
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self.store = SqliteStore(os.path.join(self.tmppath, 'store'))
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def tearDown(self):
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shutil.rmtree(self.tmppath)
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def test1(self):
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self.assertEqual(self.store.tid, 0)
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self.assertEqual(self.store.state, self.store.OPEN)
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self.store.put('SOMENS', 'SOMEID', 'SOMEDATA')
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self.assertRaises(self.store.AlreadyExists, lambda: self.store.put('SOMENS', 'SOMEID', 'SOMEDATA'))
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self.assertEqual(self.store.get('SOMENS', 'SOMEID'), 'SOMEDATA')
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self.store.rollback()
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self.assertRaises(self.store.DoesNotExist, lambda: self.store.get('SOMENS', 'SOMEID'))
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self.assertEqual(self.store.tid, 0)
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def test2(self):
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self.assertEqual(self.store.tid, 0)
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self.assertEqual(self.store.state, self.store.OPEN)
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self.store.put('SOMENS', 'SOMEID', 'SOMEDATA')
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self.assertEqual(self.store.get('SOMENS', 'SOMEID'), 'SOMEDATA')
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self.store.commit()
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self.assertEqual(self.store.tid, 1)
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self.assertEqual(self.store.get('SOMENS', 'SOMEID'), 'SOMEDATA')
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self.store.delete('SOMENS', 'SOMEID')
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self.assertRaises(self.store.DoesNotExist, lambda: self.store.get('SOMENS', 'SOMEID'))
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self.store.rollback()
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self.assertEqual(self.store.get('SOMENS', 'SOMEID'), 'SOMEDATA')
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self.store.delete('SOMENS', 'SOMEID')
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self.assertRaises(self.store.DoesNotExist, lambda: self.store.get('SOMENS', 'SOMEID'))
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self.store.commit()
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self.assertEqual(self.store.tid, 2)
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self.assertRaises(self.store.DoesNotExist, lambda: self.store.get('SOMENS', 'SOMEID'))
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def test_list(self):
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self.store.put('SOMENS', 'SOMEID12', 'SOMEDATA')
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self.store.put('SOMENS', 'SOMEID', 'SOMEDATA')
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self.store.put('SOMENS', 'SOMEID1', 'SOMEDATA')
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self.store.put('SOMENS', 'SOMEID123', 'SOMEDATA')
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self.store.commit()
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self.assertEqual(list(self.store.list('SOMENS', max_keys=3)),
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['SOMEID', 'SOMEID1', 'SOMEID12'])
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self.assertEqual(list(self.store.list('SOMENS', marker='SOMEID12')),
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['SOMEID12', 'SOMEID123'])
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self.assertEqual(list(self.store.list('SOMENS', prefix='SOMEID1', max_keys=2)),
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['SOMEID1', 'SOMEID12'])
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self.assertEqual(list(self.store.list('SOMENS', prefix='SOMEID1', marker='SOMEID12')),
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['SOMEID12', 'SOMEID123'])
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if __name__ == '__main__':
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unittest.main()
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