class CacheFile(object):
def __init__(self, config, path=tempfile.gettempdir()):
super(CacheFile, self).__init__()
self.config = config
# we do not use the agent name in the file. this
# would prevent multiple different agents from
# accessing/updating the same cache file.
self.cache_file_name = '%s_%s_%s.pickle' % \
(config.teamcity.project_name,
config.teamcity.config_name,
config.teamcity.branch_name)
self.local_file = None
self.local_file_fp = None
self.local_file_open_state = FileModes.CLOSED
self.path = path
self.ftp = None
self.ftp_username = None
self.ftp_password = None
self.ftp_address = None
self.ftp_path = None
self.ftp_display = None
self.dropbox = None
temp_folder = tempfile.gettempdir()
self.local_file = os.path.join(temp_folder, self.cache_file_name)
if self.path.startswith('ftp://'):
# open the FTP connection
if not self._connect_to_ftp():
print 'Warning: FTP cache folder could not be accessed: "%s"' % self.path
print 'Warning: Defaulting to local file: "%s"' % self.local_file
else:
self.reset()
elif self.path.startswith('dropbox:'):
self.dropbox = Dropbox(self.path)
if not self.dropbox.available():
print 'Warning: Dropbox could not be accessed: "%s"' % self.path
print 'Warning: Defaulting to local file: "%s"' % self.local_file
self.dropbox = None
else:
if not os.path.exists(self.path):
# make sure the full path to the cache folder exists
try:
os.makedirs(self.path)
except:
pass
if not os.path.exists(self.path):
print 'Error: Cache folder does not exist: "%s"' % self.path
sys.exit(1)
self.local_file = os.path.join(self.path, self.cache_file_name)
def __del__(self):
if self.ftp:
self.ftp.close()
if os.path.exists(self.local_file):
os.remove(self.local_file)
def reset(self):
if os.path.exists(self.local_file):
os.remove(self.local_file)
def open(self, mode=FileModes.READ_ONLY):
if mode not in [FileModes.READ_ONLY, FileModes.WRITE_ONLY]:
return None
self.local_file_open_state = mode
self.local_file_fp = None
if self.ftp:
if not os.path.exists(self.local_file):
if not self._retrieve_pickle_file():
return None
try:
self.local_file_fp = open(
self.local_file,
'rb' if mode == FileModes.READ_ONLY else 'wb')
except:
self.local_file_fp = None
elif self.dropbox:
self.local_file_fp = self.dropbox.open(self.cache_file_name, mode)
else:
try:
self.local_file_fp = open(
self.local_file,
'rb' if mode == FileModes.READ_ONLY else 'wb')
except:
self.local_file_fp = None
return self.local_file_fp
def close(self):
if self.ftp:
if (not os.path.exists(
self.local_file)) or (not self.local_file_fp):
return
try:
self.local_file_fp.close()
except:
pass
self.local_file_fp = None
if self.local_file_open_state == FileModes.WRITE_ONLY:
# upload the (presumably) updated cache file
if not self._store_pickle_file():
print 'Error: Could not store cache file to FTP'
sys.exit(1)
else:
self.reset()
elif self.dropbox:
self.dropbox.close()
self.local_file_fp = None
else:
try:
self.local_file_fp.close()
except:
pass
self.local_file_fp = None
def _retrieve_pickle_file(self):
if self.ftp:
files = []
self.ftp.retrlines('NLST', files.append)
if self.cache_file_name in files:
try:
self.ftp.retrbinary('RETR %s' % self.cache_file_name,
open(self.local_file, 'wb').write)
except:
return False
return True
def _store_pickle_file(self):
if self.ftp:
with open(self.local_file, 'rb') as local_file_input:
try:
self.ftp.storbinary('STOR %s' % self.cache_file_name,
local_file_input)
except:
return False
return True
def _connect_to_ftp(self):
result = re.search(r'^ftp:\/\/([\da-z]+):([^\@]+)\@([^\/\s]+)\/(.+)$',
self.path)
if not result:
return False
self.ftp_username = result.group(1)
self.ftp_password = result.group(2)
self.ftp_address = result.group(3)
self.ftp_path = result.group(4)
# take the username/password info out of any displayed value
self.ftp_display = 'ftp://%s/%s' % (self.ftp_address, self.ftp_path)
try:
self.ftp = FTP(self.ftp_address)
except:
self.ftp = None
return False
try:
self.ftp.login(self.ftp_username, self.ftp_password)
except:
self.ftp.close()
self.ftp = None
return False
#print self.ftp.getwelcome()
try:
self.ftp.cwd(self.ftp_path)
except:
self.ftp.close()
self.ftp = None
return False
return True
def __str__(self):
if self.ftp:
return '%s/%s' % (self.ftp_display, self.cache_file_name)
if self.dropbox:
return str(self.dropbox)
return os.path.join(os.path.abspath(self.path), self.cache_file_name)
