def __init__(self, host, port, deadline=10.0, test=True):
self.isConnected = False
self.host = host
self.port = int(port)
self.log = MythLog('Python Frontend Connection')
self._deadline = deadline
self.connect(test)
def __init__(self, backend=None, port=None, db=None):
if backend and port:
XMLConnection.__init__(self, backend, port)
self.db = db
return
self.db = DBCache(db)
self.log = MythLog('Python XML Connection')
if backend is None:
# use master backend
backend = self.db.settings.NULL.MasterServerIP
if re.match('(?:\d{1,3}\.){3}\d{1,3}',backend) or \
check_ipv6(backend):
# process ip address
host = self.db._gethostfromaddr(backend)
self.host = backend
self.port = int(self.db.settings[host].BackendStatusPort)
else:
# assume given a hostname
self.host = backend
self.port = int(self.db.settings[self.host].BackendStatusPort)
if not self.port:
# try a truncated hostname
self.host = backend.split('.')[0]
self.port = int(self.db.setting[self.host].BackendStatusPort)
if not self.port:
raise MythDBError(MythError.DB_SETTING,
backend + ': BackendStatusPort')
def __init__(self,
backend,
port,
localname=None,
blockshutdown=False,
timeout=10.0):
self.connected = False
self.log = MythLog(self.logmodule)
self._socklock = allocate_lock()
self.host = backend
self.port = port
self.hostname = None
self.deadline = timeout
self.blockshutdown = blockshutdown
self.localname = localname
if self.localname is None:
self.localname = socket.gethostname()
try:
self.connect()
except socket.error as e:
self.log.logTB(MythLog.SOCKET)
self.connected = False
self.log(MythLog.GENERAL, MythLog.CRIT,
"Couldn't connect to backend [%s]:%d" \
% (self.host, self.port))
raise MythBEError(MythError.PROTO_CONNECTION, self.host, self.port)
except:
raise
def __init__(self, backend=None, port=None, db=None):
if backend and port:
XMLConnection.__init__(self, backend, port)
self.db = db
return
self.db = DBCache(db)
self.log = MythLog('Python XML Connection')
if backend is None:
# use master backend
backend = self.db.getMasterBackend()
# assume hostname from settings
host = self.db._getpreferredaddr(backend)
if host:
port = int(self.db.settings[backend].BackendStatusPort)
else:
# assume ip address
hostname = self.db._gethostfromaddr(backend)
host = backend
port = int(self.db.settings[hostname].BackendStatusPort)
# resolve ip address from name
reshost, resport = resolve_ip(host, port)
if not reshost:
raise MythDBError(MythError.DB_SETTING,
backend + ': BackendServerAddr')
if not resport:
raise MythDBError(MythError.DB_SETTING,
backend + ': BackendStatusPort')
self.host = host
self.port = port
def __init__(self, dbconn):
self.log = MythLog('Python Database Connection')
self.tablefields = None
self.settings = None
self.dbconn = dbconn
self._refs = {}
self.log(MythLog.DATABASE, MythLog.INFO,
"Attempting connection: {0}".format(dbconn.ident))
try:
_Connection_Pool.__init__(self)
except:
raise MythDBError(MythError.DB_CONNECTION, dbconn)
def __init__(self,
path=None,
setting=None,
db=None,
useshell=True,
prefix=''):
DBCache.__init__(self, db=db)
self.log = MythLog(self.logmodule, db=self)
self.path = None
if setting is not None:
# pull local setting from database
host = self.gethostname()
self.path = self.settings[host][setting]
if self.path is None:
# see if that setting is applied globally
self.path = self.settings['NULL'][setting]
if self.path is None:
# not set globally either, use supplied default
self.path = path
if self.path is None:
# no default supplied, just error out
raise MythDBError(MythError.DB_SETTING, setting, host)
if self.path is None:
# setting not given, use path from argument
if path is None:
raise MythError('Invalid input to System()')
self.path = path
if prefix:
self.path = os.path.join(prefix, self.path)
cmd = self.path.split()[0]
if self.path.startswith('/'):
# test full given path
if not os.access(cmd, os.F_OK):
raise MythFileError('Defined executable path does not exist.')
else:
# search command from PATH
for folder in os.environ['PATH'].split(':'):
if os.access(os.path.join(folder, cmd), os.F_OK):
self.path = os.path.join(folder, self.path)
break
else:
raise MythFileError('Defined executable path does not exist.')
self.returncode = 0
self.stderr = ''
self.useshell = useshell
def __init__(self):
self.log = MythLog('Python M-Search')
port = 1900
addr = '239.255.255.250'
self.dest = (addr, port)
self.sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM,
socket.IPPROTO_UDP)
self.sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
listening = False
while listening == False:
try:
self.sock.bind(('', port))
self.addr = (addr, port)
listening = True
except socket.error, e:
if port < 1910:
port += 1
else:
raise MythError(MythError.SOCKET, e)
def __init__(self, *args, **kwargs):
socket.socket.__init__(self, *args, **kwargs)
self.log = MythLog('Python Socket')
self.setdeadline(10.0)
def __init__(self, db):
self.db = db
self.log = MythLog('Schema Update (%s)' % self._schema_name)
def __init__(self,
backend=None,
blockshutdown=False,
events=False,
db=None):
self.db = DBCache(db)
self.log = MythLog(self.logmodule, db=self.db)
self.hostname = None
self.sendcommands = True
self.blockshutdown = blockshutdown
self.receiveevents = events
if backend is None:
# no backend given, use master
self.host = self.db.settings.NULL.MasterServerIP
self.hostname = self.db._gethostfromaddr(self.host)
else:
backend = backend.strip('[]')
query = "SELECT hostname FROM settings WHERE value=? AND data=?"
if self._reip.match(backend):
# given backend is IP address
self.host = backend
self.hostname = self.db._gethostfromaddr(
backend, 'BackendServerIP')
elif check_ipv6(backend):
# given backend is IPv6 address
self.host = backend
self.hostname = self.db._gethostfromaddr(
backend, 'BackendServerIP6')
else:
# given backend is hostname, pull address from database
self.hostname = backend
self.host = self.db._getpreferredaddr(backend)
# lookup port from database
self.port = int(self.db.settings[self.hostname].BackendServerPort)
if not self.port:
raise MythDBError(MythError.DB_SETTING, 'BackendServerPort',
self.port)
self._ident = '%s:%d' % (self.host, self.port)
if self._ident in self._shared:
# existing connection found
self._conn = self._shared[self._ident]
if self.sendcommands:
if self._conn.command is None:
self._conn.command = self._newcmdconn()
elif self.blockshutdown:
# upref block of shutdown
# issue command to backend if needed
self._conn.blockshutdown += 1
if self._conn.blockshutdown == 1:
self._conn.command.blockShutdown()
if self.receiveevents:
if self._conn.event is None:
self._conn.event = self._neweventconn()
else:
# no existing connection, create new
self._conn = self._ConnHolder()
if self.sendcommands:
self._conn.command = self._newcmdconn()
if self.blockshutdown:
self._conn.blockshutdown = 1
if self.receiveevents:
self._conn.event = self._neweventconn()
self._shared[self._ident] = self._conn
self._events = self._listhandlers()
for func in self._events:
self.registerevent(func)
def ftopen(file, mode, forceremote=False, nooverwrite=False, db=None, \
chanid=None, starttime=None, download=False):
"""
ftopen(file, mode, forceremote=False, nooverwrite=False, db=None)
-> FileTransfer object
-> file object
Method will attempt to open file locally, falling back to remote access
over mythprotocol if necessary.
'forceremote' will force a FileTransfer object if possible.
'file' takes a standard MythURI:
myth://<group>@<host>:<port>/<path>
'mode' takes a 'r' or 'w'
'nooverwrite' will refuse to open a file writable,
if a local file is found.
"""
db = DBCache(db)
log = MythLog('Python File Transfer', db=db)
reuri = re.compile(\
'myth://((?P<group>.*)@)?(?P<host>[\[\]a-zA-Z0-9_\-\.]*)(:[0-9]*)?/(?P<file>.*)')
reip = re.compile('(?:\d{1,3}\.){3}\d{1,3}')
if mode not in ('r', 'w'):
raise TypeError("File I/O must be of type 'r' or 'w'")
if chanid and starttime:
protoopen = lambda host, file, storagegroup: \
RecordFileTransfer(host, file, storagegroup,\
mode, chanid, starttime, db)
elif download:
protoopen = lambda host, lfile, storagegroup: \
DownloadFileTransfer(host, lfile, storagegroup, \
mode, file, db)
else:
protoopen = lambda host, file, storagegroup: \
FileTransfer(host, file, storagegroup, mode, db)
# process URI (myth://<group>@<host>[:<port>]/<path/to/file>)
match = reuri.match(file)
if match is None:
raise MythError('Invalid FileTransfer input string: ' + file)
host = match.group('host')
filename = match.group('file')
sgroup = match.group('group')
if sgroup is None:
sgroup = 'Default'
# get full system name
host = host.strip('[]')
if reip.match(host) or check_ipv6(host):
host = db._gethostfromaddr(host)
# user forced to remote access
if forceremote:
if (mode == 'w') and (filename.find('/') != -1):
raise MythFileError(MythError.FILE_FAILED_WRITE, file,
'attempting remote write outside base path')
if nooverwrite and FileOps(host, db=db).fileExists(filename, sgroup):
raise MythFileError(MythError.FILE_FAILED_WRITE, file,
'refusing to overwrite existing file')
return protoopen(host, filename, sgroup)
if mode == 'w':
# check for pre-existing file
path = FileOps(host, db=db).fileExists(filename, sgroup)
sgs = list(db.getStorageGroup(groupname=sgroup))
if path is not None:
if nooverwrite:
raise MythFileError(MythError.FILE_FAILED_WRITE, file,
'refusing to overwrite existing file')
for sg in sgs:
if sg.dirname in path:
if sg.local:
return open(sg.dirname + filename, mode)
else:
return protoopen(host, filename, sgroup)
# prefer local storage for new files
for i, v in reversed(list(enumerate(sgs))):
if not v.local:
sgs.pop(i)
else:
st = os.statvfs(v.dirname)
v.free = st[0] * st[3]
if len(sgs) > 0:
# choose path with most free space
sg = sorted(sgs, key=lambda sg: sg.free, reverse=True)[0]
# create folder if it does not exist
if filename.find('/') != -1:
path = sg.dirname + filename.rsplit('/', 1)[0]
if not os.access(path, os.F_OK):
os.makedirs(path)
log(log.FILE, log.INFO, 'Opening local file (w)',
sg.dirname + filename)
return open(sg.dirname + filename, mode)
# fallback to remote write
else:
if filename.find('/') != -1:
raise MythFileError(
MythError.FILE_FAILED_WRITE, file,
'attempting remote write outside base path')
return protoopen(host, filename, sgroup)
else:
# search for file in local directories
sg = findfile(filename, sgroup, db)
if sg is not None:
# file found, open local
log(log.FILE, log.INFO, 'Opening local file (r)',
sg.dirname + filename)
return open(sg.dirname + filename, mode)
else:
# file not found, open remote
return protoopen(host, filename, sgroup)
def __init__(self, host, port):
self.host, self.port = host, int(port)
self.log = MythLog('Python XML Connection')
def __init__(self, backend=None, blockshutdown=False, events=False, db=None):
self.db = DBCache(db)
self.log = MythLog(self.logmodule, db=self.db)
self.hostname = None
self.sendcommands = True
self.blockshutdown = blockshutdown
self.receiveevents = events
if backend is None:
# use master backend
backend = self.db.getMasterBackend()
else:
backend = backend.strip('[]')
# assume backend is hostname from settings
host = self.db._getpreferredaddr(backend)
if host:
port = int(self.db.settings[backend].BackendServerPort)
self.hostname = backend
else:
# assume ip address
self.hostname = self.db._gethostfromaddr(backend)
host = backend
port = int(self.db.settings[self.hostname].BackendServerPort)
# resolve ip address from name
reshost, resport = resolve_ip(host,port)
if not reshost:
raise MythDBError(MythError.DB_SETTING,
backend+': BackendServerAddr')
if not resport:
raise MythDBError(MythError.DB_SETTING,
backend+': BackendServerPort')
self.host = host
self.port = port
self._ident = '%s:%d' % (self.host, self.port)
if self._ident in self._shared:
# existing connection found
self._conn = self._shared[self._ident]
if self.sendcommands:
if self._conn.command is None:
self._conn.command = self._newcmdconn()
elif self.blockshutdown:
# upref block of shutdown
# issue command to backend if needed
self._conn.blockshutdown += 1
if self._conn.blockshutdown == 1:
self._conn.command.blockShutdown()
if self.receiveevents:
if self._conn.event is None:
self._conn.event = self._neweventconn()
else:
# no existing connection, create new
self._conn = self._ConnHolder()
if self.sendcommands:
self._conn.command = self._newcmdconn()
if self.blockshutdown:
self._conn.blockshutdown = 1
if self.receiveevents:
self._conn.event = self._neweventconn()
self._shared[self._ident] = self._conn
self._events = self._listhandlers()
for func in self._events:
self.registerevent(func)
