def compile_archive(self):
"""
Once the file is renamed and the difmet instruction file
created, they are both packaged and sent to cache/C_tosend
repertory
"""
# create the difmet instruction file
instr_file_path = self._create_diffmet_instr()
basename = os.path.basename(instr_file_path)
basename = basename.replace(".diffusions.xml", ".tar.gz")
archive_path = os.path.join(self.dir_c, basename + ".tmp")
with tarfile.open(archive_path, "w:gz") as tar:
tar.add(instr_file_path, arcname=os.path.basename(instr_file_path))
LOGGER.info("Compressed diffmet instruction file %s in %s.",
instr_file_path, archive_path)
tar.add(self.new_file_path, arcname=os.path.basename(self.new_file_path))
LOGGER.info("Compressed dissemination file %s in %s.",
self.new_file_path, archive_path)
shutil.move(archive_path, archive_path[:-4])
Tools.remove_file(instr_file_path, "processed instruction", LOGGER)
Tools.remove_file(self.new_file_path, "processed data", LOGGER)
Database.update_field_by_query("rxnotif", False, **dict(final_file=self.new_filename))
Database.update_field_by_query("message", "File packaged in tar.gz format",
**dict(final_file=self.new_filename))
def clear_orphan_files(dir_):
# cleaning other files
for file_ in os.listdir(dir_):
file_path = os.path.join(dir_, file_)
try:
Tools.remove_file(file_path, "orphan", LOGGER)
except FileNotFoundError:
pass
def clear_instruction_files(instruction_files):
# cleaning instruction files
for file_ in instruction_files:
try:
Tools.remove_file(file_, "instruction", LOGGER)
# file either was moved back to repertory A or deleted
except FileNotFoundError:
pass
def process_instruction_file(cls, file_to_process):
processed = False
files_fetched = []
with open(file_to_process, "r") as file_:
info_file = json.load(file_)
# get full_id
req_id = info_file.get("req_id")
hostname = info_file.get("hostname")
full_id = req_id + hostname
file_expired = cls.check_file_age(file_to_process)
if file_expired:
msg = ("%s instruction file discarded "
"because it is over expiration date "
"according to keepfiletime settings "
"parameter" % file_to_process)
LOGGER.warning(msg)
Database.update_field_by_query("requestStatus", REQ_STATUS.failed,
**dict(fullrequestId=full_id))
Database.update_field_by_query("message", msg,
**dict(fullrequestId=full_id))
else:
# get URI
uri = info_file.get("uri")
# fetch files on staging post
processed, files_fetched = cls.fetch_files(req_id, hostname, uri)
# if a file couldn't be gathered, dissemination is failed and
# instruction file deleted
if not processed:
LOGGER.error("Couldn't fetch files from openwis staging post for"
" instruction file %s."
" Proceeding to next instruction file.",
file_to_process)
# check if database status is at failed. If yes, instruction file is deleted.
# if not, it sent back to A repertory to be processed again
if Database.get_request_status(full_id) == REQ_STATUS.failed:
Tools.remove_file(file_to_process, "instruction", LOGGER)
else:
shutil.move(file_to_process, cls.dir_a)
else:
msg = "Instruction file %s processed" % file_to_process
LOGGER.info(msg)
Database.update_field_by_query("message", msg,
**dict(fullrequestId=full_id))
return processed, info_file, files_fetched
def process(cls, max_loops=0):
cls.nb_workers = SettingsManager.get("sendFTPlimitConn")
# in debug mode, it is possible to set
pool_method = cls.get_pool_method()
cls.pool = pool_method(processes=cls.nb_workers)
counter = 0
cls.setup_process()
while cls._running:
counter += 1
cls.signal_loop(counter)
cls.load_settings()
cls.update_workers()
# idle time
idle_time = SettingsManager.get("sendFTPIdle")
sleep(idle_time)
# get settings
cls.dir_c = dir_c = HarnessTree.get("temp_dissRequest_C")
cls.dir_d = dir_d = HarnessTree.get("temp_dissRequest_D")
# move back any remaining file from D to C
cls.move_back_files()
# get files in C
max_files = cls.nb_workers
list_files_c = cls.get_file_list(dir_c, max_files)
files_to_ftp = cls.move_files(list_files_c, dir_d)
for file_ in files_to_ftp:
file_expired = cls.check_file_age(file_)
if file_expired:
# TODO we need to find a way to update the info to the database
# would require looking at the file compressed though
Tools.remove_file(file_, "difmet archive", LOGGER)
continue
size = os.stat(file_).st_size
timeout = cls.compute_timeout(size, file_)
# start download
# renaming file to prevent any operation on it.
cls.lock_file(file_)
res = cls.pool.apply_async(
cls.abortable_ftp, (cls.upload_file, file_, dir_c, dir_d),
dict(timeout=timeout))
# for testing and debugging purpose only
cls.check_end_loop(counter, max_loops)
def commit_failure(self, database, diff_id):
diffusion = Diffusion(diff_externalid=diff_id,
fullrequestId=self.req_id,
requestStatus=REQ_STATUS.failed,
Date=self._to_datetime(self.date_reception),
rxnotif=True)
with Database.get_app().app_context():
database.session.add(diffusion)
database.session.commit()
LOGGER.info("Committed %s dissemination status into database.",
REQ_STATUS.failed)
if os.path.isfile(self.request_file):
Tools.remove_file(self.request_file, "JSON request", LOGGER)
return REQ_STATUS.failed
def package_data(all_files_fetched, diss_instructions):
# process files fetched
for file_path in all_files_fetched:
filename = os.path.basename(file_path)
request_id_list = Database.get_id_list_by_filename(filename)
# no reference => file is an orphan
if request_id_list == []:
Tools.remove_file(file_path, "orphan file", LOGGER)
continue
# purge requestId_list or req_id that are not in
# diss_instructions keys. That is to prevent trying to find
# an instruction file related to a file that has been processed
# by a previous request
request_id_list = [item for item in request_id_list
if item in diss_instructions.keys()]
LOGGER.info("Processing downloaded file %s linked to "
"requests %s", file_path, request_id_list)
# instantiate a DiffMetManager object that connects the file
# to its single or multiple requests and instructioons
diff_manager = DiffMetManager(request_id_list,
file_path,
diss_instructions)
# rename files according to regex
renaming_ok = diff_manager.rename()
# package the archive
if renaming_ok:
diff_manager.compile_archive()
else:
msg = ("Dissemination failed for requests %s because user settings "
"regex resulted in incorrect filename for difmet" % request_id_list)
LOGGER.error(msg)
for req_id in request_id_list:
Database.update_field_by_query("requestStatus", REQ_STATUS.failed,
**dict(fullrequestId=req_id))
Database.update_field_by_query("message", msg,
**dict(fullrequestId=req_id))
def abortable_ftp(cls, func, *args, **kwargs):
try:
timeout = kwargs.get('timeout', None)
# size in Mbytes
# get file name + ".lock" extension
original_file, dir_c, dir_d = args
file_ = original_file + ".lock"
size = os.stat(file_).st_size / (1 << 20)
connection_ok, ftp = cls.connect_ftp()
if connection_ok:
proc = ThreadPool(1)
res = proc.apply_async(func, args=(
original_file,
ftp,
))
try:
# Wait timeout seconds for func to complete.
upload_ok, duration = res.get(timeout)
file_ = cls.unlock_file(file_)
if not upload_ok:
shutil.move(file_, dir_c)
LOGGER.debug(
"Moved file back from repertory %s to repertory %s",
dir_d, dir_c)
else:
LOGGER.info(
"File %s of size %f Mo sent to Diffmet in %f s",
file_, size, duration)
Tools.remove_file(file_, "difmet archive", LOGGER)
ftp.quit()
except multiprocessing.TimeoutError:
ftp.close()
proc.terminate()
LOGGER.error(
"Timeout of %f s exceeded for sending file %s"
" on difmet. Checking upload.", timeout, original_file)
_, ftp = cls.connect_ftp()
upload_ok = cls.check_transfer(basename(original_file),
ftp)
if upload_ok:
LOGGER.warning(
"Process hit the timeout but "
"file %s of size %f Mo was still sent to Diffmet",
file_, size)
Tools.remove_file(file_, "difmet archive", LOGGER)
else:
file_ = cls.unlock_file(file_)
LOGGER.error("FTP upload of %s s failed.", file_)
# move the file back from D to C
shutil.move(file_, dir_c)
LOGGER.debug(
"Moved file back from repertory %s to repertory %s",
dir_d, dir_c)
except Exception as exc:
file_ = cls.unlock_file(file_)
trace = ''.join(
traceback.format_exception(type(exc), exc,
exc.__traceback__))
LOGGER.error(
"Error when uploading file %s with "
"trace :\n %s", file_, trace)
ftp.quit()
else:
file_ = cls.unlock_file(file_)
LOGGER.error("Couldn't connect to FTP for uploading file %s ",
file_)
# move the file back from D to C
shutil.move(file_, dir_c)
LOGGER.debug(
"Moved file back from repertory %s to repertory %s", dir_d,
dir_c)
proc.terminate()
except Exception as exc:
trace = ''.join(
traceback.format_exception(type(exc), exc, exc.__traceback__))
LOGGER.error("Error when uploading file %s with "
"trace :\n %s", file_, trace)
