python.larbatch_posix.dcache_file Class Reference

Public Member Functions
def	__init__ (self)
def	__init__ (self, path, mode='r', buf=-1)
def	__del__ (self)
def	close (self)
def	flush (self)
def	fileno (self)
def	__next__ (self)
def	read (self, size=-1)
def	readline (self, size=-1)
def	readlines (self, sizehint=-1)
def	tell (self)
def	truncate (self)
def	truncate (self, pos)
def	write (self, str)
def	writelines (self, strs)

Public Attributes
	path
	mode
	local_path
	local_file

Detailed Description

Definition at line 156 of file larbatch_posix.py.

Constructor & Destructor Documentation

def python.larbatch_posix.dcache_file.__init__

(

self

)

Definition at line 160 of file larbatch_posix.py.

    def __init__(self):
        self.path = ''            # Path of file.
        self.mode = ''            # File mode.
        self.local_path = ''      # Path of local copy of file.
        self.local_file = None    # Open File object of local copy of file.

def python.larbatch_posix.dcache_file.__init__	(		self,
			path,
			mode = 'r',
			buf = -1
	)

Definition at line 168 of file larbatch_posix.py.

    def __init__(self, path, mode='r', buf=-1):

        self.path = path
        self.mode = mode
        if path.startswith('/pnfs/'):
            self.local_path = str(uuid.uuid4()) + os.path.basename(path)
        else:
            self.local_path = path

        # Fetch copy of file from dCache, if necessary.

        if path != self.local_path and (mode.find('r') >= 0 or mode.find('a') >= 0):
            larbatch_utilities.ifdh_cp(path, self.local_path)

        # Open local copy of file.

        self.local_file = __builtins__['open'](self.local_path, mode, buf)

def python.larbatch_posix.dcache_file.__del__

(

self

)

Definition at line 188 of file larbatch_posix.py.

    def __del__(self):
        self.close()

Member Function Documentation

def python.larbatch_posix.dcache_file.__next__

(

self

)

Definition at line 227 of file larbatch_posix.py.

    def __next__(self):
        return next(self.local_file)

def python.larbatch_posix.dcache_file.close

(

self

)

Definition at line 193 of file larbatch_posix.py.

    def close(self):

        if self.local_file and not self.local_file.closed:

            # Close local copy of file.

            self.local_file.close()

            # If the local path and real path are different, do some cleanups.

            if self.path != self.local_path:

                # If file was opend for writing, transfer local copy to dCache.

                if self.mode.find('w') >= 0 or self.mode.find('a') >= 0 or self.mode.find('+') >= 0:
                    larbatch_utilities.ifdh_cp(self.local_path, self.path)

                # Delete the local copy regardless of whether the file was open for
                # reading or writing.

                os.remove(self.local_path)

def python.larbatch_posix.dcache_file.fileno

(

self

)

Definition at line 222 of file larbatch_posix.py.

    def fileno(self):
        return self.local_file.fileno()

def python.larbatch_posix.dcache_file.flush

(

self

)

Definition at line 217 of file larbatch_posix.py.

    def flush(self):
        self.local_file.flush()

def python.larbatch_posix.dcache_file.read	(		self,
			size = -1
	)

Definition at line 232 of file larbatch_posix.py.

    def read(self, size=-1):
        return self.local_file.read(size)

def python.larbatch_posix.dcache_file.readline	(		self,
			size = -1
	)

Definition at line 237 of file larbatch_posix.py.

    def readline(self, size=-1):
        return self.local_file.readline(size)

def python.larbatch_posix.dcache_file.readlines	(		self,
			sizehint = -1
	)

Definition at line 242 of file larbatch_posix.py.

    def readlines(self, sizehint=-1):
        return self.local_file.readlines()

def python.larbatch_posix.dcache_file.tell

(

self

)

Definition at line 247 of file larbatch_posix.py.

    def tell(self):
        return self.local_file.tell()

def python.larbatch_posix.dcache_file.truncate

(

self

)

Definition at line 252 of file larbatch_posix.py.

    def truncate(self):
        self.local_file.truncate()

def python.larbatch_posix.dcache_file.truncate	(		self,
			pos
	)

Definition at line 257 of file larbatch_posix.py.

    def truncate(self, pos):
        self.local_file.truncate(pos)

def python.larbatch_posix.dcache_file.write	(		self,
			str
	)

Definition at line 262 of file larbatch_posix.py.

    def write(self, str):
        self.local_file.write(str)

def python.larbatch_posix.dcache_file.writelines	(		self,
			strs
	)

Definition at line 267 of file larbatch_posix.py.

    def writelines(self, strs):
        self.local_file.writelines(strs)

# Global functions.


# Open file

Member Data Documentation

python.larbatch_posix.dcache_file.local_file

Definition at line 164 of file larbatch_posix.py.

python.larbatch_posix.dcache_file.local_path

Definition at line 163 of file larbatch_posix.py.

python.larbatch_posix.dcache_file.mode

Definition at line 162 of file larbatch_posix.py.

python.larbatch_posix.dcache_file.path

Definition at line 161 of file larbatch_posix.py.

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The documentation for this class was generated from the following file:

• larbatch/python/larbatch_posix.py