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#
# Copyright (c) 2016 Red Hat, Inc. <http://www.redhat.com>
# This file is part of GlusterFS.
# This file is licensed to you under your choice of the GNU Lesser
# General Public License, version 3 or any later version (LGPLv3 or
# later), or the GNU General Public License, version 2 (GPLv2), in all
# cases as published by the Free Software Foundation.
#
import os
import sqlite3
from errno import ENOENT
conn = None
cursor = None
def db_commit():
conn.commit()
def db_init(db_path):
global conn, cursor
# Remove Temp Db
try:
os.unlink(db_path)
os.unlink(db_path + "-journal")
except OSError as e:
if e.errno != ENOENT:
raise
conn = sqlite3.connect(db_path)
cursor = conn.cursor()
cursor.execute("DROP TABLE IF EXISTS data")
cursor.execute("DROP TABLE IF EXISTS meta")
query = """CREATE TABLE IF NOT EXISTS data(
gfid VARCHAR(100) PRIMARY KEY ON CONFLICT IGNORE,
changelog_time VARCHAR(100)
)"""
cursor.execute(query)
query = """CREATE TABLE IF NOT EXISTS meta(
gfid VARCHAR(100) PRIMARY KEY ON CONFLICT IGNORE,
changelog_time VARCHAR(100)
)"""
cursor.execute(query)
def db_record_data(gfid, changelog_time):
query = "INSERT INTO data(gfid, changelog_time) VALUES(?, ?)"
cursor.execute(query, (gfid, changelog_time))
def db_record_meta(gfid, changelog_time):
query = "INSERT INTO meta(gfid, changelog_time) VALUES(?, ?)"
cursor.execute(query, (gfid, changelog_time))
def db_remove_meta(gfid):
query = "DELETE FROM meta WHERE gfid = ?"
cursor.execute(query, (gfid, ))
def db_remove_data(gfid):
query = "DELETE FROM data WHERE gfid = ?"
cursor.execute(query, (gfid, ))
def db_get_data(start, end, limit, offset):
query = """SELECT gfid FROM data WHERE changelog_time
BETWEEN ? AND ? LIMIT ? OFFSET ?"""
cursor.execute(query, (start, end, limit, offset))
out = []
for row in cursor:
out.append(row[0])
return out
def db_get_meta(start, end, limit, offset):
query = """SELECT gfid FROM meta WHERE changelog_time
BETWEEN ? AND ? LIMIT ? OFFSET ?"""
cursor.execute(query, (start, end, limit, offset))
out = []
for row in cursor:
out.append(row[0])
return out
def db_delete_meta_if_exists_in_data():
query = """
DELETE FROM meta WHERE gfid in
(SELECT M.gfid
FROM meta M INNER JOIN data D
ON M.gfid = D.gfid)
"""
cursor.execute(query)
def db_get_data_count():
query = "SELECT COUNT(gfid) FROM data"
cursor.execute(query)
return cursor.fetchone()[0]
def db_get_meta_count():
query = "SELECT COUNT(gfid) FROM meta"
cursor.execute(query)
return cursor.fetchone()[0]
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