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obitools3/python/obitools3/apps/temp.pyx
2018-10-21 17:35:18 +02:00

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Cython
Executable File

#cython: language_level=3
'''
Created on 28 juillet 2017
@author: coissac
'''
from os import environb,getpid
from os.path import join, isdir
from tempfile import TemporaryDirectory, _get_candidate_names
from shutil import rmtree
from atexit import register
from obitools3.dms.dms import DMS
from obitools3.apps.config import getConfiguration
from obitools3.apps.config import logger
cpdef get_temp_dir():
"""
Returns a temporary directory object specific of this instance of obitools.
This is an application function. It cannot be called out of an obi command.
It requires a valid configuration.
If the function is called several time from the same obi session, the same
directory is returned.
If the OBITMP environment variable exist, the temporary directory is created
inside this directory.
The directory is automatically destroyed at the end of the end of the process.
@return: a temporary python directory object.
"""
cdef bytes tmpdirname
cdef dict config = getConfiguration()
root = config["__root_config__"]
try:
return config[root]["tempdir"].name
except KeyError:
pass
try:
basedir=environb[b'OBITMP']
except KeyError:
basedir=None
tmp = TemporaryDirectory(dir=basedir)
config[root]["tempdir"]=tmp
return tmp.name
cpdef get_temp_dir_name():
"""
Returns the name of the temporary directory object
specific of this instance of obitools.
@return: the name of the temporary directory.
@see get_temp_dir
"""
return get_temp_dir_name().name
cpdef get_temp_dms():
cdef bytes tmpdirname # @DuplicatedSignature
cdef dict config = getConfiguration() # @DuplicatedSignature
cdef DMS tmpdms
root = config["__root_config__"]
try:
return config[root]["tempdms"]
except KeyError:
pass
tmpdirname=get_temp_dir()
tempname = join(tmpdirname,
b"obi.%d.%s" % (getpid(),
tobytes(next(_get_candidate_names())))
)
tmpdms = DMS.new(tempname)
config[root]["tempdms"]=tmpdms
return tmpdms