def __init__(self, database, dblog, dir_cache, dir_partial, dir_expired):
self.log = logging.getLogger("CacheMan")
self.engine = create_engine(database, echo=dblog)
model.init(self.engine)
self.SessionFactory = sessionmaker(bind=self.engine)
self.Session = self.SessionFactory()
self.cacheDir = CacheDir(dir_cache)
self.DownloadDir = DownloadDir(dir_partial)
self.ExpireDir = ExpireDir(dir_expired)
self.callbackEventExpirePrefix = None
self.callbackEventExpirePostfix = None
self.callbackEventAvailablePrefix = None
self.callbackEventAvailablePostfix = None
def __init__(self,database,dblog ,dir_cache, dir_partial, dir_expired):
self.log = logging.getLogger("CacheMan")
self.engine = create_engine(database, echo=dblog)
model.init(self.engine)
self.SessionFactory = sessionmaker(bind=self.engine)
self.Session = self.SessionFactory()
self.cacheDir = CacheDir(dir_cache)
self.DownloadDir = DownloadDir(dir_partial)
self.ExpireDir = ExpireDir(dir_expired)
self.callbackEventExpirePrefix = None
self.callbackEventExpirePostfix = None
self.callbackEventAvailablePrefix = None
self.callbackEventAvailablePostfix = None
class CacheMan(object):
def __init__(self, database, dblog, dir_cache, dir_partial, dir_expired):
self.log = logging.getLogger("CacheMan")
self.engine = create_engine(database, echo=dblog)
model.init(self.engine)
self.SessionFactory = sessionmaker(bind=self.engine)
self.Session = self.SessionFactory()
self.cacheDir = CacheDir(dir_cache)
self.DownloadDir = DownloadDir(dir_partial)
self.ExpireDir = ExpireDir(dir_expired)
self.callbackEventExpirePrefix = None
self.callbackEventExpirePostfix = None
self.callbackEventAvailablePrefix = None
self.callbackEventAvailablePostfix = None
def checkSumCache(self):
self.cacheDir.indexUnknownClear()
uuid2del = set()
for uuid in self.cacheDir.index.keys():
filename = self.cacheDir.index[uuid]['filename']
filepath = os.path.join(self.cacheDir.directory, filename)
file_metadata = file_extract_metadata(filepath)
if file_metadata == None:
uuid2del.add(uuid)
continue
MatchingUuid = None
if int(file_metadata[u'hv:size']) != int(
self.cacheDir.index[uuid]['size']):
self.log.error("Image '%s' size incorrect." % (uuid))
uuid2del.add(uuid)
continue
if file_metadata[u'sl:checksum:sha512'] != self.cacheDir.index[
uuid]['sha512']:
self.log.error("Image '%s' sha512 incorrect." % (uuid))
uuid2del.add(uuid)
continue
# Now we remove files that have been corrupted
for uuid in uuid2del:
if 'filename' in self.cacheDir.index[uuid]:
filepath = os.path.join(self.cacheDir.directory,
self.cacheDir.index[uuid]['filename'])
if os.path.isfile(filepath):
os.remove(filepath)
self.log.error("Image '%s' was corrupted deleting." % (uuid))
del self.cacheDir.index[uuid]
return True
def expire(self):
rc = True
self.cacheDir.indexUnknownClear()
uuids2expire = {}
for key in self.cacheDir.index.keys():
uuid = self.cacheDir.index[key]['uuid']
CachedSha512 = self.cacheDir.index[key]['sha512']
QueryResults = self.Session.query(model.Subscription,model.ImageDefinition,model.ImageListInstance,model.ImageInstance).\
filter(model.ImageInstance.sha512 == CachedSha512).\
filter(model.ImageDefinition.cache == 1).\
filter(model.ImageDefinition.identifier == uuid).\
filter(model.ImageDefinition.latest == model.ImageInstance.id).\
filter(model.ImageDefinition.id == model.ImageInstance.fkIdentifier).\
filter(model.Subscription.authorised == True).\
filter(model.Subscription.imagelist_latest == model.ImageListInstance.id).\
filter(model.ImageDefinition.subscription == model.Subscription.id).\
filter(model.ImageListInstance.expired == None).\
filter(model.ImageListInstance.id == model.ImageInstance.fkimagelistinstance)
if QueryResults.count() != 1:
uuids2expire[uuid] = self.cacheDir.index[key]
continue
dbSub, sbImageDef, DbImageListInst, DbImageInst = QueryResults.one(
)
# If the image hash has changed expire old image
if self.cacheDir.index[key][u'sha512'] != DbImageInst.sha512:
uuids2expire[uuid] = self.cacheDir.index[key]
continue
# Is the size has changed expire old image
if self.cacheDir.index[key][u'size'] != DbImageInst.size:
uuids2expire[uuid] = self.cacheDir.index[key]
continue
# If the Image list instance has changed then update
# Image list instance metadata from DB.
if DbImageListInst.data_hash != self.cacheDir.index[uuid][
'msgHash']:
self.cacheDir.index[key]['message'] = DbImageListInst.data
self.cacheDir.index[key]['msgHash'] = DbImageListInst.data_hash
for uuid in uuids2expire.keys():
if self.callbackEventExpirePrefix != None:
self.callbackEventExpirePrefix(uuids2expire[uuid])
if self.ExpireDir.moveFrom(self.cacheDir, uuid):
self.log.info("Expired image '%s'" % (uuid))
else:
self.log.error("Failed to move file %s to expired directory" %
(uuid))
rc = False
self.cacheDir.indexSave()
self.ExpireDir.indexSave()
if self.callbackEventExpirePostfix != None:
self.callbackEventExpirePostfix(uuids2expire[uuid])
return rc
def download(self):
downloadsneeded = {}
QueryResults = self.Session.query(model.Subscription,model.ImageDefinition,model.ImageListInstance,model.ImageInstance).\
filter(model.ImageDefinition.cache == 1).\
filter(model.ImageDefinition.latest == model.ImageInstance.id).\
filter(model.ImageDefinition.id == model.ImageInstance.fkIdentifier).\
filter(model.ImageListInstance.expired == None).\
filter(model.Subscription.authorised == True).\
filter(model.Subscription.imagelist_latest == model.ImageListInstance.id).\
filter(model.ImageDefinition.subscription == model.Subscription.id).\
filter(model.ImageListInstance.id == model.ImageInstance.fkimagelistinstance)
for line in QueryResults:
sub = line[0]
imageDef = line[1]
imageListInst = line[2]
ImageInst = line[3]
uuid = imageDef.identifier
details = {
'hv:uri': str(ImageInst.uri),
'sl:checksum:sha512': str(ImageInst.sha512),
'hv:size': int(ImageInst.size),
'dc:identifier': uuid,
'message': str(imageListInst.data),
'hv:imagelist.dc:identifier': str(sub.identifier),
'msgHash': str(imageListInst.data_hash),
'dc:title': str(ImageInst.title),
'dc:description': str(ImageInst.description),
'hv:version': str(ImageInst.version),
'hv:hypervisor': str(ImageInst.hypervisor),
'sl:arch': str(ImageInst.arch),
'sl:comments': str(ImageInst.comments),
'sl:os': str(ImageInst.os),
'sl:osversion': str(ImageInst.osversion),
# And now the legacy values
'uri': str(ImageInst.uri),
'sha512': str(ImageInst.sha512),
'size': int(ImageInst.size),
'uuid': uuid,
}
# read message
buf = BIO.MemoryBuffer(str(imageListInst.data))
sk = X509.X509_Stack()
p7, data = SMIME.smime_load_pkcs7_bio(buf)
data_str = data.read()
try:
jsonData = json.loads(str(data_str))
except ValueError:
self.log.error("proiblem reading JSON")
continue
if jsonData == None:
self.log.error("Downlaoded jsonData was not valid image.")
continue
vmilist = VMimageListDecoder(jsonData)
if vmilist == None:
self.log.error(
"Downlaoded metadata from '%s' was not valid image list Object."
% (subscriptionKey))
# For Vo handling
imagelist_vo = vmilist.metadata.get(u'ad:vo')
if imagelist_vo != None:
if len(imagelist_vo) > 0:
details['hv:imagelist.ad:vo'] = imagelist_vo
matchingImage = None
for image in vmilist.images:
if "dc:identifier" in image.metadata.keys():
if uuid == image.metadata["dc:identifier"]:
matchingImage = image
if matchingImage != None:
for metafield in matchingImage.metadata.keys():
newfield = "hv:image.%s" % (metafield)
details[newfield] = matchingImage.metadata[metafield]
if not uuid in self.cacheDir.index.keys():
downloadsneeded[uuid] = details
continue
if self.cacheDir.index[uuid]['sha512'] != str(ImageInst.sha512):
downloadsneeded[uuid] = details
continue
for key in downloadsneeded.keys():
if not self.DownloadDir.indexAdd(downloadsneeded[key]):
self.log.error(
"Failed to add metadata request to download file '%s'." %
(key))
continue
if not self.DownloadDir.download(key):
self.log.error("Failed to download file '%s'." % (key))
self.DownloadDir.indexSave()
continue
if self.callbackEventAvailablePrefix != None:
metadata = {}
metadata.update(dict(downloadsneeded[key]))
metadata.update(dict(self.DownloadDir.index[key]))
#for pkey in metadata.keys():
# print "%s---%s" % (pkey, metadata[pkey])
self.callbackEventAvailablePrefix(metadata)
if not self.cacheDir.moveFrom(self.DownloadDir, key):
self.log.error(
"Failed to Move file '%s' into the enbdorsed directory." %
(key))
continue
self.DownloadDir.indexSave()
self.cacheDir.indexSave()
self.log.info("moved file %s" % (key))
if self.callbackEventAvailablePostfix != None:
metadata = {}
#metadata.update(dict(ddownloadsneeded[key]))
metadata.update(dict(self.cacheDir.index[key]))
self.callbackEventAvailablePostfix(metadata)
return True
def load(self):
self.cacheDir.indexLoad()
self.DownloadDir.indexLoad()
self.ExpireDir.indexLoad()
def save(self):
self.cacheDir.indexSave()
self.DownloadDir.indexSave()
self.ExpireDir.indexSave()
class CacheMan(object):
def __init__(self,database,dblog ,dir_cache, dir_partial, dir_expired):
self.log = logging.getLogger("CacheMan")
self.engine = create_engine(database, echo=dblog)
model.init(self.engine)
self.SessionFactory = sessionmaker(bind=self.engine)
self.Session = self.SessionFactory()
self.cacheDir = CacheDir(dir_cache)
self.DownloadDir = DownloadDir(dir_partial)
self.ExpireDir = ExpireDir(dir_expired)
self.callbackEventExpirePrefix = None
self.callbackEventExpirePostfix = None
self.callbackEventAvailablePrefix = None
self.callbackEventAvailablePostfix = None
def checkSumCache(self):
self.cacheDir.indexUnknownClear()
uuid2del = set()
for uuid in self.cacheDir.index.keys():
filename = self.cacheDir.index[uuid]['filename']
filepath = os.path.join(self.cacheDir.directory,filename)
file_metadata = file_extract_metadata(filepath)
if file_metadata == None:
uuid2del.add(uuid)
continue
MatchingUuid = None
if int(file_metadata[u'hv:size']) != int(self.cacheDir.index[uuid]['size']):
self.log.error("Image '%s' size incorrect." % (uuid))
uuid2del.add(uuid)
continue
if file_metadata[u'sl:checksum:sha512'] != self.cacheDir.index[uuid]['sha512']:
self.log.error("Image '%s' sha512 incorrect." % (uuid))
uuid2del.add(uuid)
continue
# Now we remove files that have been corrupted
for uuid in uuid2del:
if 'filename' in self.cacheDir.index[uuid]:
filepath = os.path.join(self.cacheDir.directory,self.cacheDir.index[uuid]['filename'])
if os.path.isfile(filepath):
os.remove(filepath)
self.log.error("Image '%s' was corrupted deleting." % (uuid))
del self.cacheDir.index[uuid]
return True
def expire(self):
rc = True
self.cacheDir.indexUnknownClear()
uuids2expire = {}
for key in self.cacheDir.index.keys():
uuid = self.cacheDir.index[key]['uuid']
CachedSha512 = self.cacheDir.index[key]['sha512']
QueryResults = self.Session.query(model.Subscription,model.ImageDefinition,model.ImageListInstance,model.ImageInstance).\
filter(model.ImageInstance.sha512 == CachedSha512).\
filter(model.ImageDefinition.cache == 1).\
filter(model.ImageDefinition.identifier == uuid).\
filter(model.ImageDefinition.latest == model.ImageInstance.id).\
filter(model.ImageDefinition.id == model.ImageInstance.fkIdentifier).\
filter(model.Subscription.authorised == True).\
filter(model.Subscription.imagelist_latest == model.ImageListInstance.id).\
filter(model.ImageDefinition.subscription == model.Subscription.id).\
filter(model.ImageListInstance.expired == None).\
filter(model.ImageListInstance.id == model.ImageInstance.fkimagelistinstance)
if QueryResults.count() != 1:
uuids2expire[uuid] = self.cacheDir.index[key]
continue
dbSub, sbImageDef, DbImageListInst, DbImageInst = QueryResults.one()
# If the image hash has changed expire old image
if self.cacheDir.index[key][u'sha512'] != DbImageInst.sha512:
uuids2expire[uuid] = self.cacheDir.index[key]
continue
# Is the size has changed expire old image
if self.cacheDir.index[key][u'size'] != DbImageInst.size:
uuids2expire[uuid] = self.cacheDir.index[key]
continue
# If the Image list instance has changed then update
# Image list instance metadata from DB.
if DbImageListInst.data_hash != self.cacheDir.index[uuid]['msgHash']:
self.cacheDir.index[key]['message'] = DbImageListInst.data
self.cacheDir.index[key]['msgHash'] = DbImageListInst.data_hash
for uuid in uuids2expire.keys():
if self.callbackEventExpirePrefix != None:
self.callbackEventExpirePrefix(uuids2expire[uuid])
if self.ExpireDir.moveFrom(self.cacheDir,uuid):
self.log.info("Expired image '%s'" % (uuid))
else:
self.log.error("Failed to move file %s to expired directory" % (uuid))
rc = False
self.cacheDir.indexSave()
self.ExpireDir.indexSave()
if self.callbackEventExpirePostfix != None:
self.callbackEventExpirePostfix(uuids2expire[uuid])
return rc
def download(self):
downloadsneeded = {}
QueryResults = self.Session.query(model.Subscription,model.ImageDefinition,model.ImageListInstance,model.ImageInstance).\
filter(model.ImageDefinition.cache == 1).\
filter(model.ImageDefinition.latest == model.ImageInstance.id).\
filter(model.ImageDefinition.id == model.ImageInstance.fkIdentifier).\
filter(model.ImageListInstance.expired == None).\
filter(model.Subscription.authorised == True).\
filter(model.Subscription.imagelist_latest == model.ImageListInstance.id).\
filter(model.ImageDefinition.subscription == model.Subscription.id).\
filter(model.ImageListInstance.id == model.ImageInstance.fkimagelistinstance)
for line in QueryResults:
sub = line[0]
imageDef = line[1]
imageListInst = line[2]
ImageInst = line[3]
uuid = imageDef.identifier
details = {'hv:uri' : str(ImageInst.uri),
'sl:checksum:sha512' : str(ImageInst.sha512),
'hv:size': int(ImageInst.size),
'dc:identifier' : uuid,
'message' : str(imageListInst.data),
'hv:imagelist.dc:identifier' : str(sub.identifier),
'msgHash' : str(imageListInst.data_hash),
'dc:title' : str(ImageInst.title),
'dc:description' : str(ImageInst.description),
'hv:version' : str(ImageInst.version),
'hv:hypervisor' : str(ImageInst.hypervisor),
'sl:arch' : str(ImageInst.arch),
'sl:comments' : str(ImageInst.comments),
'sl:os' : str(ImageInst.os),
'sl:osversion' : str(ImageInst.osversion),
# And now the legacy values
'uri' : str(ImageInst.uri),
'sha512' : str(ImageInst.sha512),
'size': int(ImageInst.size),
'uuid' : uuid,
}
# read message
buf = BIO.MemoryBuffer(str(imageListInst.data))
sk = X509.X509_Stack()
p7, data = SMIME.smime_load_pkcs7_bio(buf)
data_str = data.read()
try:
jsonData = json.loads(str(data_str))
except ValueError:
self.log.error("proiblem reading JSON")
continue
if jsonData == None:
self.log.error("Downlaoded jsonData was not valid image.")
continue
vmilist = VMimageListDecoder(jsonData)
if vmilist == None:
self.log.error("Downlaoded metadata from '%s' was not valid image list Object." % (subscriptionKey))
# For Vo handling
imagelist_vo = vmilist.metadata.get(u'ad:vo')
if imagelist_vo != None:
if len(imagelist_vo) > 0:
details['hv:imagelist.ad:vo'] = imagelist_vo
matchingImage = None
for image in vmilist.images:
if "dc:identifier" in image.metadata.keys():
if uuid == image.metadata["dc:identifier"]:
matchingImage = image
if matchingImage != None:
for metafield in matchingImage.metadata.keys():
newfield = "hv:image.%s" % (metafield)
details[newfield] = matchingImage.metadata[metafield]
if not uuid in self.cacheDir.index.keys():
downloadsneeded[uuid] = details
continue
if self.cacheDir.index[uuid]['sha512'] != str(ImageInst.sha512):
downloadsneeded[uuid] = details
continue
for key in downloadsneeded.keys():
if not self.DownloadDir.indexAdd(downloadsneeded[key]):
self.log.error("Failed to add metadata request to download file '%s'." % (key))
continue
if not self.DownloadDir.download(key):
self.log.error("Failed to download file '%s'." % (key))
self.DownloadDir.indexSave()
continue
if self.callbackEventAvailablePrefix != None:
metadata = {}
metadata.update(dict(downloadsneeded[key]))
metadata.update(dict(self.DownloadDir.index[key]))
#for pkey in metadata.keys():
# print "%s---%s" % (pkey, metadata[pkey])
self.callbackEventAvailablePrefix(metadata)
if not self.cacheDir.moveFrom(self.DownloadDir,key):
self.log.error("Failed to Move file '%s' into the enbdorsed directory." % (key))
continue
self.DownloadDir.indexSave()
self.cacheDir.indexSave()
self.log.info("moved file %s" % (key))
if self.callbackEventAvailablePostfix != None:
metadata = {}
#metadata.update(dict(ddownloadsneeded[key]))
metadata.update(dict(self.cacheDir.index[key]))
self.callbackEventAvailablePostfix(metadata)
return True
def load(self):
self.cacheDir.indexLoad()
self.DownloadDir.indexLoad()
self.ExpireDir.indexLoad()
def save(self):
self.cacheDir.indexSave()
self.DownloadDir.indexSave()
self.ExpireDir.indexSave()
