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# -*- python -*-
# -*- coding: utf-8 -*-
# This file is part of Installsystems.
#
# Installsystems is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Installsystems is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with Installsystems. If not, see <http://www.gnu.org/licenses/>.
'''
class Repository1(object):
'''
Repository class
'''
def __init__(self, config):
self.config = config
self.local = islocal(config.path)
if not self.config.offline:
try:
self.db = Database(config.dbpath)
except:
debug(u"Unable to load database %s" % config.dbpath)
self.config.offline = True
if self.config.offline:
debug(u"Repository %s is offline" % config.name)
def __getattribute__(self, name):
'''
Raise an error if repository is unavailable
Unavailable can be caused because db is not accessible or
because repository is not initialized
config = object.__getattribute__(self, "config")
# config, init, local are always accessible
if name in ("init", "config", "local"):
return object.__getattribute__(self, name)
# if no db (not init or not accessible) raise error
if config.offline:
raise ISError(u"Repository %s is offline" % config.name)
return object.__getattribute__(self, name)
@property
def version(self):
'''
Return repository version
'''
return self.db.version
def init(self):
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Initialize an empty base repository
'''
config = self.config
# check local repository
if not self.local:
raise ISError(u"Repository creation must be local")
# create base directories
arrow("Creating base directories")
arrowlevel(1)
# creating local directory
try:
if os.path.exists(config.path):
arrow(u"%s already exists" % config.path)
else:
istools.mkdir(config.path, config.uid, config.gid, config.dmod)
arrow(u"%s directory created" % config.path)
except Exception as e:
raise ISError(u"Unable to create directory %s" % config.path, e)
arrowlevel(-1)
# create database
d = Database.create(config.dbpath)
istools.chrights(config.dbpath, uid=config.uid,
gid=config.gid, mode=config.fmod)
# load database
self.db = Database(config.dbpath)
# mark repo as not offline
self.config.offline = False
# create/update last file
self.update_last()
def update_last(self):
'''
Update last file to current time
'''
# check local repository
if not self.local:
raise ISError(u"Repository addition must be local")
try:
arrow("Updating last file")
last_path = os.path.join(self.config.path, self.config.lastname)
open(last_path, "w").write("%s\n" % int(time.time()))
istools.chrights(last_path, self.config.uid, self.config.gid, self.config.fmod)
except Exception as e:
raise ISError(u"Update last file failed", e)
def last(self, name):
'''
Return last version of name in repo or None if not found
'''
r = self.db.ask("SELECT version FROM image WHERE name = ?", (name,)).fetchall()
# no row => no way
if r is None:
return None
f = lambda x,y: x[0] if istools.compare_versions(x[0], y[0]) > 0 else y[0]
# return last
return reduce(f, r)
def add(self, image, delete=False):
'''
Add a packaged image to repository
if delete is true, remove original files
'''
# check local repository
if not self.local:
raise ISError(u"Repository addition must be local")
# cannot add already existant image
if self.has(image.name, image.version):
raise ISError(u"Image already in database, delete first!")
# adding file to repository
arrow("Copying images and payload")
for obj in [ image ] + image.payload.values():
dest = os.path.join(self.config.path, obj.md5)
basesrc = os.path.basename(obj.path)
if os.path.exists(dest):
arrow(u"Skipping %s: already exists" % basesrc, 1)
else:
arrow(u"Adding %s (%s)" % (basesrc, obj.md5), 1)
dfo = open(dest, "wb")
sfo = PipeFile(obj.path, "r", progressbar=True)
sfo.consume(dfo)
sfo.close()
dfo.close()
istools.chrights(dest, self.config.uid,
self.config.gid, self.config.fmod)
# copy is done. create a image inside repo
r_image = PackageImage(os.path.join(self.config.path, image.md5),
md5name=True)
# checking must be done with original md5
r_image.md5 = image.md5
# checking image and payload after copy
r_image.check("Check image and payload")
# add description to db
arrow("Adding metadata")
self.db.begin()
# insert image information
arrow("Image", 1)
self.db.ask("INSERT INTO image values (?,?,?,?,?,?,?)",
(image.md5,
image.name,
image.version,
image.date,
image.author,
image.description,
image.size,
))
arrow("Payloads", 1)
for name, obj in image.payload.items():
self.db.ask("INSERT INTO payload values (?,?,?,?,?)",
(obj.md5,
image.md5,
name,
obj.isdir,
obj.size,
))
# on commit
self.db.commit()
# update last file
self.update_last()
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# removing orginal files
if delete:
arrow("Removing original files")
for obj in [ image ] + image.payload.values():
arrow(os.path.basename(obj.path), 1)
os.unlink(obj.path)
def getallmd5(self):
'''
Get list of all md5 in DB
'''
res = self.db.ask("SELECT md5 FROM image UNION SELECT md5 FROM payload").fetchall()
return [ md5[0] for md5 in res ]
def check(self):
'''
Check repository for unreferenced and missing files
'''
# Check if the repo is local
if not self.local:
raise ISError(u"Repository must be local")
local_files = set(os.listdir(self.config.path))
local_files.remove(self.config.dbname)
local_files.remove(self.config.lastname)
db_files = set(self.getallmd5())
# check missing files
arrow("Checking missing files")
missing_files = db_files - local_files
if len(missing_files) > 0:
out(os.linesep.join(missing_files))
# check unreferenced files
arrow("Checking unreferenced files")
unref_files = local_files - db_files
if len(unref_files) > 0:
out(os.linesep.join(unref_files))
# check corruption of local files
arrow("Checking corrupted files")
for f in local_files:
fo = PipeFile(os.path.join(self.config.path, f))
fo.consume()
fo.close()
if fo.md5 != f:
out(f)
def clean(self, force=False):
'''
Clean the repository's content
'''
# Check if the repo is local
if not self.local:
raise ISError(u"Repository must be local")
allmd5 = set(self.getallmd5())
repofiles = set(os.listdir(self.config.path)) - set([self.config.dbname, self.config.lastname])
dirtyfiles = repofiles - allmd5
if len(dirtyfiles) > 0:
# print dirty files
arrow("Dirty files:")
for f in dirtyfiles:
arrow(f, 1)
# ask confirmation
if not force and not confirm("Remove dirty files? (yes) "):
raise ISError(u"Aborted!")
# start cleaning
arrow("Cleaning")
for f in dirtyfiles:
p = os.path.join(self.config.path, f)
arrow(u"Removing %s" % p, 1)
try:
if os.path.isdir(p):
os.rmdir(p)
else:
os.unlink(p)
except:
warn(u"Removing %s failed" % p)
else:
arrow("Nothing to clean")
def delete(self, name, version, payloads=True):
'''
Delete an image from repository
'''
# check local repository
if not self.local:
raise ISError(u"Repository deletion must be local")
# get md5 of files related to images (exception is raised if not exists
md5s = self.getmd5(name, version)
# cleaning db (must be done before cleaning)
arrow("Cleaning database")
arrow("Remove payloads from database", 1)
self.db.begin()
for md5 in md5s[1:]:
self.db.ask("DELETE FROM payload WHERE md5 = ? AND image_md5 = ?",
(md5, md5s[0])).fetchone()
arrow("Remove image from database", 1)
self.db.ask("DELETE FROM image WHERE md5 = ?",
(md5s[0],)).fetchone()
self.db.commit()
# Removing files
arrow("Removing files from pool")
# if asked don't remove payloads
if not payloads:
md5s = [ md5s[0] ]
arrowlevel(1)
for md5 in md5s:
self._remove_file(md5)
arrowlevel(-1)
# update last file
self.update_last()
def images(self):
'''
Return a dict of information on images
'''
db_images = self.db.ask("SELECT md5, name, version, date,\
author, description, size FROM image ORDER BY name, version").fetchall()
field = ("md5", "name", "version", "date", "author", "description", "size")
for info in db_images:
d = dict(zip(field, info))
d["repo"] = self.config.name
d["url"] = os.path.join(self.config.path, d["md5"])
db_payloads = self.db.ask("SELECT payload.md5,payload.size,payload.isdir,image.name,image.version,payload.name FROM payload inner join image on payload.image_md5 = image.md5").fetchall()
res = {}
for payload in db_payloads:
md5 = payload[0]
# create entry if not exists
if md5 not in res:
res[md5] = {"size": payload[1], "isdir": payload[2], "images": {}}
# add image to list
imgpath = u"%s/%s:%s" % (self.config.name, payload[3], payload[4])
res[md5]["images"][imgpath] = {"repo": self.config.name,
"imgname": payload[3],
"imgver": payload[4],
"payname": payload[5]}
return res
images = self.db.ask("SELECT name, version, author, description\
FROM image\
WHERE name LIKE ? OR\
description LIKE ? OR\
author LIKE ?",
tuple( [u"%%%s%%" % pattern ] * 3)
).fetchall()
for name, version, author, description in images:
arrow(u"%s v%s" % (name, version), 1)
out(u" #yellow#Author:#reset# %s" % author)
out(u" #yellow#Description:#reset# %s" % description)
Remove a filename from pool. Check if it's not needed by db before
# check existance in table image
have = False
for table in ("image", "payload"):
have = have or self.db.ask(u"SELECT md5 FROM %s WHERE md5 = ? LIMIT 1" % table,
(filename,)).fetchone() is not None
# if no reference, delete!
if not have:
arrow(u"%s, deleted" % filename)
os.unlink(os.path.join(self.config.path, filename))
else:
arrow(u"%s, skipped" % filename)
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Return the existance of a package
'''
return self.db.ask("SELECT name,version FROM image WHERE name = ? AND version = ? LIMIT 1", (name,version)).fetchone() is not None
def get(self, name, version=None):
'''
Return an image from a name and version
'''
# is no version take the last
if version is None:
version = self.last(name)
if version is None:
raise ISError(u"Unable to find image %s in %s" % (name,
self.config.name))
# get file md5 from db
r = self.db.ask("select md5 from image where name = ? and version = ? limit 1",
(name, version)).fetchone()
if r is None:
raise ISError(u"Unable to find image %s v%s in %s" % (name, version,
self.config.name))
path = os.path.join(self.config.path, r[0])
# getting the file
arrow(u"Loading image %s v%s from repository %s" % (name,
version,
self.config.name))
memfile = cStringIO.StringIO()
try:
fo = PipeFile(path, "r")
fo.consume(memfile)
fo.close()
except Exception as e:
raise ISError(u"Loading image %s v%s failed" % (name, version), e)
memfile.seek(0)
pkg = PackageImage(path, fileobj=memfile, md5name=True)
if pkg.md5 != r[0]:
raise ISError(u"Image MD5 verification failure")
return pkg
def getmd5(self, name, version):
'''
Return an image md5 and payload md5 from name and version. Order matter !
Image md5 will still be the first
'''
# get file md5 from db
a = self.db.ask("SELECT md5 FROM image WHERE name = ? AND version = ? LIMIT 1",
(name,version)).fetchone()
if a is None:
raise ISError(u"No such image %s version %s" % (name, version))
b = self.db.ask("SELECT md5 FROM payload WHERE image_md5 = ?",
(a[0],)).fetchall()
return [ a[0] ] + [ x[0] for x in b ]
@classmethod
def create(cls, path):
arrow("Creating repository database")
# check locality
if not istools.isfile(path):
raise ISError("Database creation must be local")
path = os.path.abspath(path)
if os.path.exists(path):
raise ISError("Database already exists. Remove it before")
try:
conn = sqlite3.connect(path, isolation_level=None)
conn.execute("PRAGMA foreign_keys = ON")
conn.executescript(istemplate.createdb)
conn.commit()
conn.close()
except Exception as e:
raise ISError(u"Create database failed", e)
return cls(path)
def __init__(self, path):
# check locality
if not istools.isfile(path):
raise ISError("Database must be local")
self.path = os.path.abspath(path)
if not os.path.exists(self.path):
raise ISError("Database not exists")
self.conn = sqlite3.connect(self.path, isolation_level=None)
self.conn.execute("PRAGMA foreign_keys = ON")
# get database version
try:
r = self.ask("SELECT value FROM misc WHERE key = 'version'").fetchone()
if r is None:
raise TypeError()
self.version = float(r[0])
except:
self.version = 1.0
# we only support database v1
if self.version >= 2.0:
debug(u"Invalid database format: %s" % self.version)
raise ISError("Invalid database format")
# we make a query to be sure format is valid
try:
self.ask("SELECT * FROM image")
except:
debug(u"Invalid database format: %s" % self.version)
raise ISError("Invalid database format")
def begin(self):
'''
Start a db transaction
'''
self.conn.execute("BEGIN TRANSACTION")
def commit(self):
'''
Commit current db transaction
'''
self.conn.execute("COMMIT TRANSACTION")
def ask(self, sql, args=()):
'''
Ask question to db