class FTSFileOperation(FileTransferOperation, FileTransferQuery, FileDeletionOperation, FileDeletionQuery):
def __init__(self, config):
FileTransferOperation.__init__(self, config)
FileTransferQuery.__init__(self, config)
FileDeletionOperation.__init__(self, config)
FileDeletionQuery.__init__(self, config)
self.server_url = config.fts_server
self.server_id = 0 # server id in the DB
# Parameter "retry" for fts3.new_job. 0 = server default
self.fts_retry = config.get('fts_retry', 0)
# String passed to fts3.new_*_job(metadata = _)
self.metadata_string = config.get('metadata_string', 'Dynamo')
# Proxy to be forwarded to FTS
self.x509proxy = config.get('x509proxy', None)
self.x509proxy_orig = config.get('x509proxy', None)
# Bookkeeping device
self.db = MySQL(config.db_params)
# Reuse the context object
self.keep_context = config.get('keep_context', False)
self._context = None
def num_pending_transfers(self): #override
# Check the number of files in queue
# We first thought about counting files with /files, but FTS seems to return only 1000 maximum even when "limit" is set much larger
#files = self._ftscallurl('/files?state_in=ACTIVE,SUBMITTED,READY&limit=%d' % self.max_pending_transfers)
#return len(files)
num_pending = 0
file_states = ['SUBMITTED', 'READY', 'ACTIVE', 'STAGING', 'STARTED']
jobs = self._ftscall('list_jobs', state_in = ['SUBMITTED', 'ACTIVE', 'STAGING'])
from random import shuffle
shuffle(jobs)
total_count = 0
for job in jobs:
total_count = total_count + 1
#LOG.info("List_files call 1")
job_info = self._ftscall('get_job_status', job['job_id'], list_files = True)
for file_info in job_info['files']:
if file_info['file_state'] in file_states:
num_pending += 1
if num_pending == self.max_pending_transfers + 1:
# don't need to query more
return num_pending
return num_pending
def num_pending_deletions(self): #override
# See above
#files = self._ftscallurl('/files?state_in=ACTIVE,SUBMITTED,READY&limit=%d' % self.max_pending_deletions)
#return len(files)
num_pending = 0
file_states = ['SUBMITTED', 'READY', 'ACTIVE']
jobs = self._ftscall('list_jobs', state_in = ['SUBMITTED', 'ACTIVE'])
from random import shuffle
shuffle(jobs)
total_count = 0
for job in jobs:
total_count = total_count + 1
#LOG.info("List_files call 2")
job_info = self._ftscall('get_job_status', job['job_id'], list_files = True)
for file_info in job_info['dm']:
if file_info['file_state'] in file_states:
num_pending += 1
if num_pending == self.max_pending_deletions + 1:
# don't need to query more
return num_pending
return num_pending
def form_batches(self, tasks): #override
if len(tasks) == 0:
return []
# FTS3 has no restriction on how to group the transfers, but cannot apparently take thousands
# of tasks at once
batches = [[]]
for task in tasks:
batches[-1].append(task)
if len(batches[-1]) == self.batch_size:
batches.append([])
return batches
def start_transfers(self, batch_id, batch_tasks): #override
result = {}
stage_files = []
transfers = []
s_pfn_to_task = {}
t_pfn_to_task = {}
for task in batch_tasks:
sub = task.subscription
lfn = sub.file.lfn
dest_pfn = sub.destination.to_pfn(lfn, 'gfal2')
source_pfn = task.source.to_pfn(lfn, 'gfal2')
self.x509proxy = sub.destination.x509proxy
if task.source.storage_type == Site.TYPE_MSS:
self.x509proxy = task.source.x509proxy
if dest_pfn is None or source_pfn is None:
# either gfal2 is not supported or lfn could not be mapped
LOG.warning('Could not obtain PFN for %s at %s or %s', lfn, sub.destination.name, task.source.name)
result[task] = False
continue
if self.checksum_algorithm:
checksum = '%s:%s' % (self.checksum_algorithm, str(sub.file.checksum[self.checksum_index]))
verify_checksum = 'target'
else:
checksum = None
verify_checksum = False
if task.source.storage_type == Site.TYPE_MSS:
LOG.debug('Staging %s at %s', lfn, task.source.name)
# need to stage first
stage_files.append((source_pfn, dest_pfn, checksum, sub.file.size))
# task identified by the source PFN
s_pfn_to_task[source_pfn] = task
else:
LOG.info("Here we are")
LOG.info('Submitting transfer of %s from %s to %s to FTS', lfn, task.source.name, sub.destination.name)
transfers.append(fts3.new_transfer(source_pfn, dest_pfn, checksum = checksum, filesize = sub.file.size))
# there should be only one task per destination pfn
t_pfn_to_task[dest_pfn] = task
if len(stage_files) != 0:
LOG.debug('Submit new staging job for %d files', len(stage_files))
job = fts3.new_staging_job([ff[0] for ff in stage_files], bring_online = 36000, metadata = self.metadata_string)
success = self._submit_job(job, 'staging', batch_id, dict((pfn, task.id) for pfn, task in s_pfn_to_task.iteritems()), x509=task.source.x509proxy)
for source_pfn, _, _, _ in stage_files:
result[s_pfn_to_task[source_pfn]] = success
if success and not self._read_only:
LOG.debug('Recording staging queue')
fields = ('id', 'source', 'destination', 'checksum', 'size')
mapping = lambda ff: (s_pfn_to_task[ff[0]].id,) + ff
if not self._read_only:
self.db.insert_many('fts_staging_queue', fields, mapping, stage_files)
if len(transfers) != 0:
LOG.debug('Submit new transfer job for %d files', len(transfers))
LOG.info("Submitting transfer job from disk to site %s with proxy %s." % (sub.destination.name, sub.destination.x509proxy))
job = fts3.new_job(transfers, retry = self.fts_retry, overwrite = True,
verify_checksum = verify_checksum, metadata = self.metadata_string)
success = self._submit_job(job, 'transfer', batch_id, dict((pfn, task.id) for pfn, task in t_pfn_to_task.iteritems()), x509=sub.destination.x509proxy)
for transfer in transfers:
dest_pfn = transfer['destinations'][0]
result[t_pfn_to_task[dest_pfn]] = success
return result
def start_deletions(self, batch_id, batch_tasks): #override
result = {}
pfn_to_task = {}
for task in batch_tasks:
desub = task.desubscription
lfn = desub.file.lfn
pfn = desub.site.to_pfn(lfn, 'gfal2')
if pfn is None:
# either gfal2 is not supported or lfn could not be mapped
result[task] = False
continue
# there should be only one task per destination pfn
pfn_to_task[pfn] = task
job = fts3.new_delete_job(pfn_to_task.keys(), metadata = self.metadata_string)
success = self._submit_job(job, 'deletion', batch_id, dict((pfn, task.id) for pfn, task in pfn_to_task.iteritems()))
for task in pfn_to_task.itervalues():
result[task] = success
return result
def cancel_transfers(self, task_ids): #override
return self._cancel(task_ids, 'transfer')
def cancel_deletions(self, task_ids): #override
return self._cancel(task_ids, 'deletion')
def cleanup(self): #override
sql = 'DELETE FROM f USING `fts_transfer_tasks` AS f'
sql += ' LEFT JOIN `transfer_tasks` AS t ON t.`id` = f.`id`'
sql += ' LEFT JOIN `fts_transfer_batches` AS b ON b.`id` = f.`fts_batch_id`'
sql += ' WHERE t.`id` IS NULL OR b.`id` IS NULL'
self.db.query(sql)
sql = 'DELETE FROM f USING `fts_staging_queue` AS f'
sql += ' LEFT JOIN `fts_transfer_tasks` AS t ON t.`id` = f.`id`'
sql += ' WHERE t.`id` IS NULL'
self.db.query(sql)
sql = 'DELETE FROM f USING `fts_deletion_tasks` AS f'
sql += ' LEFT JOIN `deletion_tasks` AS t ON t.`id` = f.`id`'
sql += ' LEFT JOIN `fts_deletion_batches` AS b ON b.`id` = f.`fts_batch_id`'
sql += ' WHERE t.`id` IS NULL OR b.`id` IS NULL'
self.db.query(sql)
sql = 'DELETE FROM f USING `fts_transfer_batches` AS f'
sql += ' LEFT JOIN `transfer_batches` AS t ON t.`id` = f.`batch_id`'
sql += ' WHERE t.`id` IS NULL'
self.db.query(sql)
sql = 'DELETE FROM f USING `fts_deletion_batches` AS f'
sql += ' LEFT JOIN `deletion_batches` AS t ON t.`id` = f.`batch_id`'
sql += ' WHERE t.`id` IS NULL'
self.db.query(sql)
# Delete the source tasks - caution: wipes out all tasks when switching the operation backend
sql = 'DELETE FROM t USING `transfer_tasks` AS t'
sql += ' LEFT JOIN `fts_transfer_tasks` AS f ON f.`id` = t.`id`'
sql += ' WHERE f.`id` IS NULL'
self.db.query(sql)
sql = 'DELETE FROM t USING `deletion_tasks` AS t'
sql += ' LEFT JOIN `fts_deletion_tasks` AS f ON f.`id` = t.`id`'
sql += ' WHERE f.`id` IS NULL'
self.db.query(sql)
def get_transfer_status(self, batch_id): #override
if self.server_id == 0:
self._set_server_id()
results = self._get_status(batch_id, 'transfer')
staged_tasks = []
for task_id, status, exitcode, msg, start_time, finish_time in self._get_status(batch_id, 'staging'):
if status == FileQuery.STAT_DONE:
staged_tasks.append(task_id)
results.append((task_id, FileQuery.STAT_QUEUED, -1, None, None, None))
else:
# these tasks won't appear in results from _get_status('transfer')
# because no transfer jobs have been submitted yet
results.append((task_id, status, exitcode, None, start_time, finish_time))
if len(staged_tasks) != 0:
if self.checksum_algorithm:
verify_checksum = 'target'
else:
verify_checksum = None
which_dest = ""
transfers = []
pfn_to_tid = {}
for task_id, source_pfn, dest_pfn, checksum, filesize in self.db.select_many('fts_staging_queue', ('id', 'source', 'destination', 'checksum', 'size'), 'id', staged_tasks):
for s in inventory.sites.itervalues():
if s.backend in dest_pfn and s.backend != "":
which_dest = s
#transfers = []
#pfn_to_tid = {}
transfers.append(fts3.new_transfer(source_pfn, dest_pfn, checksum = checksum, filesize = filesize))
pfn_to_tid[dest_pfn] = task_id
job = fts3.new_job(transfers, retry = self.fts_retry, overwrite = True, verify_checksum = verify_checksum, metadata = self.metadata_string)
#which_dest = ""
#for s in inventory.sites.itervalues():
# if s.backend in dest_pfn and s.backend != "":
# which_dest = s
LOG.info("Submitting job from buffer to site %s with proxy %s." % (which_dest.name, which_dest.x509proxy))
#LOG.info("dest_pfn: %s" % dest_pfn)
success = self._submit_job(job, 'transfer', batch_id, pfn_to_tid, x509=which_dest.x509proxy)
if success and not self._read_only:
self.db.delete_many('fts_staging_queue', 'id', pfn_to_tid.values())
return results
def get_deletion_status(self, batch_id): #override
if self.server_id == 0:
self._set_server_id()
return self._get_status(batch_id, 'deletion')
def write_transfer_history(self, history_db, task_id, history_id): #override
self._write_history(history_db, task_id, history_id, 'transfer')
def write_deletion_history(self, history_db, task_id, history_id): #override
self._write_history(history_db, task_id, history_id, 'deletion')
def forget_transfer_status(self, task_id): #override
return self._forget_status(task_id, 'transfer')
def forget_deletion_status(self, task_id): #override
return self._forget_status(task_id, 'deletion')
def forget_transfer_batch(self, task_id): #override
return self._forget_batch(task_id, 'transfer')
def forget_deletion_batch(self, task_id): #override
return self._forget_batch(task_id, 'deletion')
def _ftscall(self, method, *args, **kwd):
return self._do_ftscall(binding = (method, args, kwd))
def _ftscallurl(self, url):
# Call to FTS URLs that don't have python bindings
return self._do_ftscall(url = url)
def _do_ftscall(self, binding = None, url = None):
proxy = self.x509proxy
if binding is not None:
method, args, kwd = binding
for k in kwd.iteritems():
LOG.info(k)
if k[0] == "ucert":
LOG.info("Setting proxy to %s" % k[1])
proxy = k[1]
if self._context is None:
# request_class = Request -> use "requests"-based https call (instead of default PyCURL,
# which may not be able to handle proxy certificates depending on the cURL installation)
# verify = False -> do not verify the server certificate
LOG.info("Setting context with proxy %s" % proxy)
context = fts3.Context(self.server_url, ucert = proxy, ukey = proxy,
request_class = Request, verify = False)
if self.keep_context:
self._context = context
else:
context = self._context
if binding is not None:
reqstring = binding[0]
else:
reqstring = url
LOG.debug('FTS: %s', reqstring)
wait_time = 1.
for attempt in xrange(10):
try:
if binding is not None:
method, args, kwd = binding
if "ucert" in kwd:
del kwd["ucert"]
if "ukey" in kwd:
del kwd["ukey"]
return getattr(fts3, method)(context, *args, **kwd)
else:
return json.loads(context.get(url))
except fts_exceptions.ServerError as exc:
if str(exc.reason) == '500':
# Internal server error - let's try again
pass
except fts_exceptions.TryAgain:
pass
time.sleep(wait_time)
wait_time *= 1.5
LOG.error('Failed to communicate with FTS server: %s', reqstring)
raise RuntimeError('Failed to communicate with FTS server: %s' % reqstring)
def _submit_job(self, job, optype, batch_id, pfn_to_tid, x509=None):
if self._read_only:
job_id = 'test'
else:
try:
if x509 is not None:
job_id = self._ftscall('submit', job, ucert=x509, ukey=x509)
else:
job_id = self._ftscall('submit', job)
except:
exc_type, exc, tb = sys.exc_info()
LOG.error('Failed to submit %s to FTS: Exception %s (%s)', optype, exc_type.__name__, str(exc))
return False
# list of file-level operations (one-to-one with pfn)
try:
if optype == 'transfer' or optype == 'staging':
key = 'files'
else:
key = 'dm'
#LOG.info("List_files call 3")
fts_files = self._ftscall('get_job_status', job_id = job_id, list_files = True)[key]
except:
exc_type, exc, tb = sys.exc_info()
LOG.error('Failed to get status of job %s from FTS: Exception %s (%s)', job_id, exc_type.__name__, str(exc))
return False
if self.server_id == 0:
self._set_server_id()
if optype == 'transfer' or optype == 'staging':
table_name = 'fts_transfer_batches'
columns = ('batch_id', 'task_type', 'fts_server_id', 'job_id')
values = (batch_id, optype, self.server_id, job_id)
else:
table_name = 'fts_deletion_batches'
columns = ('batch_id', 'fts_server_id', 'job_id')
values = (batch_id, self.server_id, job_id)
if not self._read_only:
fts_batch_id = self.db.insert_get_id(table_name, columns = columns, values = values)
if optype == 'transfer' or optype == 'staging':
table_name = 'fts_transfer_tasks'
pfn_key = 'dest_surl'
else:
table_name = 'fts_deletion_tasks'
pfn_key = 'source_surl'
fields = ('id', 'fts_batch_id', 'fts_file_id')
mapping = lambda f: (pfn_to_tid[f[pfn_key]], fts_batch_id, f['file_id'])
if not self._read_only:
self.db.insert_many(table_name, fields, mapping, fts_files, do_update = True, update_columns = ('fts_batch_id', 'fts_file_id'))
return True
def _cancel(self, task_ids, optype):
sql = 'SELECT b.`job_id`, f.`fts_file_id` FROM `fts_{op}_tasks` AS f'
sql += ' INNER JOIN `fts_{op}_batches` AS b ON b.`id` = f.`fts_batch_id`'
result = self.db.execute_many(sql.format(op = optype), MySQL.bare('f.`id`'), task_ids)
by_job = collections.defaultdict(list)
for job_id, file_id in result:
by_job[job_id].append(file_id)
if not self._read_only:
for job_id, ids in by_job.iteritems():
try:
self._ftscall('cancel', job_id, file_ids = ids)
except:
LOG.error('Failed to cancel FTS job %s', job_id)
def _get_status(self, batch_id, optype):
if optype == 'transfer' or optype == 'staging':
sql = 'SELECT `id`, `job_id` FROM `fts_transfer_batches`'
sql += ' WHERE `task_type` = %s AND `fts_server_id` = %s AND `batch_id` = %s'
batch_data = self.db.query(sql, optype, self.server_id, batch_id)
task_table_name = 'fts_transfer_tasks'
else:
sql = 'SELECT `id`, `job_id` FROM `fts_deletion_batches`'
sql += ' WHERE `fts_server_id` = %s AND `batch_id` = %s'
batch_data = self.db.query(sql, self.server_id, batch_id)
task_table_name = 'fts_deletion_tasks'
message_pattern = re.compile('(?:DESTINATION|SOURCE|TRANSFER|DELETION) \[([0-9]+)\] (.*)')
results = []
for fts_batch_id, job_id in batch_data:
LOG.debug('Checking status of FTS %s batch %s', optype, job_id)
sql = 'SELECT `fts_file_id`, `id` FROM `{table}` WHERE `fts_batch_id` = %s'.format(table = task_table_name)
fts_to_task = dict(self.db.xquery(sql, fts_batch_id))
try:
#LOG.info("List_files call 4")
result = self._ftscall('get_job_status', job_id = job_id, list_files = True)
except:
LOG.error('Failed to get job status for FTS job %s', job_id)
LOG.error(optype)
continue
if optype == 'transfer' or optype == 'staging':
fts_files = result['files']
else:
fts_files = result['dm']
for fts_file in fts_files:
try:
task_id = fts_to_task[fts_file['file_id']]
except KeyError:
continue
state = fts_file['file_state']
exitcode = -1
start_time = None
finish_time = None
get_time = False
try:
message = fts_file['reason']
except KeyError:
message = None
if message is not None:
# Check if reason follows a known format (from which we can get the exit code)
matches = message_pattern.match(message)
if matches is not None:
exitcode = int(matches.group(1))
message = matches.group(2)
# Additionally, if the message is a known one, convert the exit code
c = find_msg_code(message)
if c is not None:
exitcode = c
# HDFS site with gridftp-hdfs gives a I/O error (500) when the file is not there
if optype == 'deletion' and 'Input/output error' in message:
exitcode = errno.ENOENT
if state == 'FINISHED':
status = FileQuery.STAT_DONE
exitcode = 0
get_time = True
elif state == 'FAILED':
status = FileQuery.STAT_FAILED
get_time = True
elif state == 'CANCELED':
status = FileQuery.STAT_CANCELLED
get_time = True
elif state == 'SUBMITTED':
status = FileQuery.STAT_NEW
else:
status = FileQuery.STAT_QUEUED
if optype == 'transfer' and exitcode == errno.EEXIST:
# Transfer + destination exists -> not an error
status = FileQuery.STAT_DONE
exitcode = 0
elif optype == 'deletion' and exitcode == errno.ENOENT:
# Deletion + destination does not exist -> not an error
status = FileQuery.STAT_DONE
exitcode = 0
if get_time:
try:
start_time = calendar.timegm(time.strptime(fts_file['start_time'], '%Y-%m-%dT%H:%M:%S'))
except TypeError: # start time is NULL (can happen when the job is cancelled)
start_time = None
try:
finish_time = calendar.timegm(time.strptime(fts_file['finish_time'], '%Y-%m-%dT%H:%M:%S'))
except TypeError:
start_time = None
LOG.debug('%s %d: %s, %d, %s, %s, %s', optype, task_id, FileQuery.status_name(status), exitcode, message, start_time, finish_time)
results.append((task_id, status, exitcode, message, start_time, finish_time))
return results
def _write_history(self, history_db, task_id, history_id, optype):
if not self._read_only:
history_db.db.insert_update('fts_servers', ('url',), self.server_url)
try:
server_id = history_db.db.query('SELECT `id` FROM `fts_servers` WHERE `url` = %s', self.server_url)[0]
except IndexError:
server_id = 0
sql = 'SELECT b.`job_id`, t.`fts_file_id` FROM `fts_{op}_tasks` AS t'
sql += ' INNER JOIN `fts_{op}_batches` AS b ON b.`id` = t.`fts_batch_id`'
sql += ' WHERE t.`id` = %s'
try:
fts_job_id, fts_file_id = self.db.query(sql.format(op = optype), task_id)[0]
except IndexError:
return
if not self._read_only:
history_db.db.insert_update('fts_batches', ('fts_server_id', 'job_id'), server_id, fts_job_id)
batch_id = history_db.db.query('SELECT `id` FROM `fts_batches` WHERE `fts_server_id` = %s AND `job_id` = %s', server_id, fts_job_id)[0]
history_db.db.insert_update('fts_file_{op}s'.format(op = optype), ('id', 'fts_batch_id', 'fts_file_id'), history_id, batch_id, fts_file_id)
def _forget_status(self, task_id, optype):
if self._read_only:
return
sql = 'DELETE FROM `fts_{optype}_tasks` WHERE `id` = %s'.format(optype = optype)
self.db.query(sql, task_id)
def _forget_batch(self, batch_id, optype):
if self._read_only:
return
sql = 'DELETE FROM `fts_{optype}_batches` WHERE `batch_id` = %s'.format(optype = optype)
self.db.query(sql, batch_id)
def _set_server_id(self):
if not self._read_only:
self.db.query('INSERT INTO `fts_servers` (`url`) VALUES (%s) ON DUPLICATE KEY UPDATE `url`=VALUES(`url`)', self.server_url)
result = self.db.query('SELECT `id` FROM `fts_servers` WHERE `url` = %s', self.server_url)
if len(result) == 0:
self.server_id = 0
else:
self.server_id = result[0]
class FTSFileOperation(FileTransferOperation, FileTransferQuery,
FileDeletionOperation, FileDeletionQuery):
def __init__(self, config):
FileTransferOperation.__init__(self, config)
FileTransferQuery.__init__(self, config)
FileDeletionOperation.__init__(self, config)
FileDeletionQuery.__init__(self, config)
self.server_url = config.fts_server
self.server_id = 0 # server id in the DB
# Parameter "retry" for fts3.new_job. 0 = server default
self.fts_retry = config.get('fts_retry', 0)
# String passed to fts3.new_*_job(metadata = _)
self.metadata_string = config.get('metadata_string', 'Dynamo')
# Proxy to be forwarded to FTS
self.x509proxy = config.get('x509proxy', None)
# Bookkeeping device
self.db = MySQL(config.db_params)
# Reuse the context object
self.keep_context = config.get('keep_context', True)
self._context = None
def num_pending_transfers(self): #override
# Check the number of files in queue
# We first thought about counting files with /files, but FTS seems to return only 1000 maximum even when "limit" is set much larger
#files = self._ftscallurl('/files?state_in=ACTIVE,SUBMITTED,READY&limit=%d' % self.max_pending_transfers)
#return len(files)
num_pending = 0
file_states = ['SUBMITTED', 'READY', 'ACTIVE', 'STAGING', 'STARTED']
jobs = self._ftscall('list_jobs',
state_in=['SUBMITTED', 'ACTIVE', 'STAGING'])
for job in jobs:
job_info = self._ftscall('get_job_status',
job['job_id'],
list_files=True)
for file_info in job_info['files']:
if file_info['file_state'] in file_states:
num_pending += 1
if num_pending == self.max_pending_transfers + 1:
# don't need to query more
return num_pending
return num_pending
def num_pending_deletions(self): #override
# See above
#files = self._ftscallurl('/files?state_in=ACTIVE,SUBMITTED,READY&limit=%d' % self.max_pending_deletions)
#return len(files)
num_pending = 0
file_states = ['SUBMITTED', 'READY', 'ACTIVE']
jobs = self._ftscall('list_jobs', state_in=['SUBMITTED', 'ACTIVE'])
for job in jobs:
job_info = self._ftscall('get_job_status',
job['job_id'],
list_files=True)
for file_info in job_info['dm']:
if file_info['file_state'] in file_states:
num_pending += 1
if num_pending == self.max_pending_deletions + 1:
# don't need to query more
return num_pending
return num_pending
def form_batches(self, tasks): #override
if len(tasks) == 0:
return []
# FTS3 has no restriction on how to group the transfers, but cannot apparently take thousands
# of tasks at once
batches = [[]]
for task in tasks:
batches[-1].append(task)
if len(batches[-1]) == self.batch_size:
batches.append([])
return batches
def start_transfers(self, batch_id, batch_tasks): #override
result = {}
stage_files = []
transfers = []
s_pfn_to_task = {}
t_pfn_to_task = {}
for task in batch_tasks:
sub = task.subscription
lfn = sub.file.lfn
dest_pfn = sub.destination.to_pfn(lfn, 'gfal2')
source_pfn = task.source.to_pfn(lfn, 'gfal2')
if dest_pfn is None or source_pfn is None:
# either gfal2 is not supported or lfn could not be mapped
LOG.warning('Could not obtain PFN for %s at %s or %s', lfn,
sub.destination.name, task.source.name)
result[task] = False
continue
if self.checksum_algorithm:
checksum = '%s:%s' % (
self.checksum_algorithm,
str(sub.file.checksum[self.checksum_index]))
verify_checksum = 'target'
else:
checksum = None
verify_checksum = False
if task.source.storage_type == Site.TYPE_MSS:
LOG.debug('Staging %s at %s', lfn, task.source.name)
# need to stage first
stage_files.append(
(source_pfn, dest_pfn, checksum, sub.file.size))
# task identified by the source PFN
s_pfn_to_task[source_pfn] = task
else:
LOG.debug('Submitting transfer of %s from %s to %s to FTS',
lfn, task.source.name, sub.destination.name)
transfers.append(
fts3.new_transfer(source_pfn,
dest_pfn,
checksum=checksum,
filesize=sub.file.size))
# there should be only one task per destination pfn
t_pfn_to_task[dest_pfn] = task
if len(stage_files) != 0:
LOG.debug('Submit new staging job for %d files', len(stage_files))
job = fts3.new_staging_job([ff[0] for ff in stage_files],
bring_online=36000,
metadata=self.metadata_string)
success = self._submit_job(
job, 'staging', batch_id,
dict(
(pfn, task.id) for pfn, task in s_pfn_to_task.iteritems()))
for source_pfn, _, _, _ in stage_files:
result[s_pfn_to_task[source_pfn]] = success
if success and not self._read_only:
LOG.debug('Recording staging queue')
fields = ('id', 'source', 'destination', 'checksum', 'size')
mapping = lambda ff: (s_pfn_to_task[ff[0]].id, ) + ff
if not self._read_only:
self.db.insert_many('fts_staging_queue', fields, mapping,
stage_files)
if len(transfers) != 0:
LOG.debug('Submit new transfer job for %d files', len(transfers))
job = fts3.new_job(transfers,
retry=self.fts_retry,
overwrite=True,
verify_checksum=verify_checksum,
metadata=self.metadata_string)
success = self._submit_job(
job, 'transfer', batch_id,
dict(
(pfn, task.id) for pfn, task in t_pfn_to_task.iteritems()))
for transfer in transfers:
dest_pfn = transfer['destinations'][0]
result[t_pfn_to_task[dest_pfn]] = success
return result
def start_deletions(self, batch_id, batch_tasks): #override
result = {}
pfn_to_task = {}
for task in batch_tasks:
desub = task.desubscription
lfn = desub.file.lfn
pfn = desub.site.to_pfn(lfn, 'gfal2')
if pfn is None:
# either gfal2 is not supported or lfn could not be mapped
result[task] = False
continue
# there should be only one task per destination pfn
pfn_to_task[pfn] = task
job = fts3.new_delete_job(pfn_to_task.keys(),
metadata=self.metadata_string)
success = self._submit_job(
job, 'deletion', batch_id,
dict((pfn, task.id) for pfn, task in pfn_to_task.iteritems()))
for task in pfn_to_task.itervalues():
result[task] = success
return result
def cancel_transfers(self, task_ids): #override
return self._cancel(task_ids, 'transfer')
def cancel_deletions(self, task_ids): #override
return self._cancel(task_ids, 'deletion')
def cleanup(self): #override
sql = 'DELETE FROM f USING `fts_transfer_tasks` AS f'
sql += ' LEFT JOIN `transfer_tasks` AS t ON t.`id` = f.`id`'
sql += ' LEFT JOIN `fts_transfer_batches` AS b ON b.`id` = f.`fts_batch_id`'
sql += ' WHERE t.`id` IS NULL OR b.`id` IS NULL'
self.db.query(sql)
sql = 'DELETE FROM f USING `fts_staging_queue` AS f'
sql += ' LEFT JOIN `fts_transfer_tasks` AS t ON t.`id` = f.`id`'
sql += ' WHERE t.`id` IS NULL'
self.db.query(sql)
sql = 'DELETE FROM f USING `fts_deletion_tasks` AS f'
sql += ' LEFT JOIN `deletion_tasks` AS t ON t.`id` = f.`id`'
sql += ' LEFT JOIN `fts_deletion_batches` AS b ON b.`id` = f.`fts_batch_id`'
sql += ' WHERE t.`id` IS NULL OR b.`id` IS NULL'
self.db.query(sql)
sql = 'DELETE FROM f USING `fts_transfer_batches` AS f'
sql += ' LEFT JOIN `transfer_batches` AS t ON t.`id` = f.`batch_id`'
sql += ' WHERE t.`id` IS NULL'
self.db.query(sql)
sql = 'DELETE FROM f USING `fts_deletion_batches` AS f'
sql += ' LEFT JOIN `deletion_batches` AS t ON t.`id` = f.`batch_id`'
sql += ' WHERE t.`id` IS NULL'
self.db.query(sql)
# Delete the source tasks - caution: wipes out all tasks when switching the operation backend
sql = 'DELETE FROM t USING `transfer_tasks` AS t'
sql += ' LEFT JOIN `fts_transfer_tasks` AS f ON f.`id` = t.`id`'
sql += ' WHERE f.`id` IS NULL'
self.db.query(sql)
sql = 'DELETE FROM t USING `deletion_tasks` AS t'
sql += ' LEFT JOIN `fts_deletion_tasks` AS f ON f.`id` = t.`id`'
sql += ' WHERE f.`id` IS NULL'
self.db.query(sql)
def get_transfer_status(self, batch_id): #override
if self.server_id == 0:
self._set_server_id()
results = self._get_status(batch_id, 'transfer')
staged_tasks = []
for task_id, status, exitcode, msg, start_time, finish_time in self._get_status(
batch_id, 'staging'):
if status == FileQuery.STAT_DONE:
staged_tasks.append(task_id)
results.append(
(task_id, FileQuery.STAT_QUEUED, -1, None, None, None))
else:
# these tasks won't appear in results from _get_status('transfer')
# because no transfer jobs have been submitted yet
results.append(
(task_id, status, exitcode, None, start_time, finish_time))
if len(staged_tasks) != 0:
transfers = []
pfn_to_tid = {}
for task_id, source_pfn, dest_pfn, checksum, filesize in self.db.select_many(
'fts_staging_queue',
('id', 'source', 'destination', 'checksum', 'size'), 'id',
staged_tasks):
transfers.append(
fts3.new_transfer(source_pfn,
dest_pfn,
checksum=checksum,
filesize=filesize))
pfn_to_tid[dest_pfn] = task_id
if self.checksum_algorithm:
verify_checksum = 'target'
else:
verify_checksum = None
job = fts3.new_job(transfers,
retry=self.fts_retry,
overwrite=True,
verify_checksum=verify_checksum,
metadata=self.metadata_string)
success = self._submit_job(job, 'transfer', batch_id, pfn_to_tid)
if success and not self._read_only:
self.db.delete_many('fts_staging_queue', 'id',
pfn_to_tid.values())
return results
def get_deletion_status(self, batch_id): #override
if self.server_id == 0:
self._set_server_id()
return self._get_status(batch_id, 'deletion')
def write_transfer_history(self, history_db, task_id,
history_id): #override
self._write_history(history_db, task_id, history_id, 'transfer')
def write_deletion_history(self, history_db, task_id,
history_id): #override
self._write_history(history_db, task_id, history_id, 'deletion')
def forget_transfer_status(self, task_id): #override
return self._forget_status(task_id, 'transfer')
def forget_deletion_status(self, task_id): #override
return self._forget_status(task_id, 'deletion')
def forget_transfer_batch(self, task_id): #override
return self._forget_batch(task_id, 'transfer')
def forget_deletion_batch(self, task_id): #override
return self._forget_batch(task_id, 'deletion')
def _ftscall(self, method, *args, **kwd):
return self._do_ftscall(binding=(method, args, kwd))
def _ftscallurl(self, url):
# Call to FTS URLs that don't have python bindings
return self._do_ftscall(url=url)
def _do_ftscall(self, binding=None, url=None):
if self._context is None:
# request_class = Request -> use "requests"-based https call (instead of default PyCURL,
# which may not be able to handle proxy certificates depending on the cURL installation)
# verify = False -> do not verify the server certificate
context = fts3.Context(self.server_url,
ucert=self.x509proxy,
ukey=self.x509proxy,
request_class=Request,
verify=False)
if self.keep_context:
self._context = context
else:
context = self._context
if binding is not None:
reqstring = binding[0]
else:
reqstring = url
LOG.debug('FTS: %s', reqstring)
wait_time = 1.
for attempt in xrange(10):
try:
if binding is not None:
method, args, kwd = binding
return getattr(fts3, method)(context, *args, **kwd)
else:
return json.loads(context.get(url))
except fts_exceptions.ServerError as exc:
if str(exc.reason) == '500':
# Internal server error - let's try again
pass
except fts_exceptions.TryAgain:
pass
time.sleep(wait_time)
wait_time *= 1.5
LOG.error('Failed to communicate with FTS server: %s', reqstring)
raise RuntimeError('Failed to communicate with FTS server: %s' %
reqstring)
def _submit_job(self, job, optype, batch_id, pfn_to_tid):
if self._read_only:
job_id = 'test'
else:
try:
job_id = self._ftscall('submit', job)
except:
exc_type, exc, tb = sys.exc_info()
LOG.error('Failed to submit %s to FTS: Exception %s (%s)',
optype, exc_type.__name__, str(exc))
return False
LOG.debug('FTS job id: %s', job_id)
# list of file-level operations (one-to-one with pfn)
try:
if optype == 'transfer' or optype == 'staging':
key = 'files'
else:
key = 'dm'
fts_files = self._ftscall('get_job_status',
job_id=job_id,
list_files=True)[key]
except:
exc_type, exc, tb = sys.exc_info()
LOG.error(
'Failed to get status of job %s from FTS: Exception %s (%s)',
job_id, exc_type.__name__, str(exc))
return False
if self.server_id == 0:
self._set_server_id()
if optype == 'transfer' or optype == 'staging':
table_name = 'fts_transfer_batches'
columns = ('batch_id', 'task_type', 'fts_server_id', 'job_id')
values = (batch_id, optype, self.server_id, job_id)
else:
table_name = 'fts_deletion_batches'
columns = ('batch_id', 'fts_server_id', 'job_id')
values = (batch_id, self.server_id, job_id)
if not self._read_only:
fts_batch_id = self.db.insert_get_id(table_name,
columns=columns,
values=values)
if optype == 'transfer' or optype == 'staging':
table_name = 'fts_transfer_tasks'
pfn_key = 'dest_surl'
else:
table_name = 'fts_deletion_tasks'
pfn_key = 'source_surl'
fields = ('id', 'fts_batch_id', 'fts_file_id')
mapping = lambda f: (pfn_to_tid[f[pfn_key]], fts_batch_id, f['file_id']
)
if not self._read_only:
self.db.insert_many(table_name,
fields,
mapping,
fts_files,
do_update=True,
update_columns=('fts_batch_id', 'fts_file_id'))
return True
def _cancel(self, task_ids, optype):
sql = 'SELECT b.`job_id`, f.`fts_file_id` FROM `fts_{op}_tasks` AS f'
sql += ' INNER JOIN `fts_{op}_batches` AS b ON b.`id` = f.`fts_batch_id`'
result = self.db.execute_many(sql.format(op=optype),
MySQL.bare('f.`id`'), task_ids)
by_job = collections.defaultdict(list)
for job_id, file_id in result:
by_job[job_id].append(file_id)
if not self._read_only:
for job_id, ids in by_job.iteritems():
try:
self._ftscall('cancel', job_id, file_ids=ids)
except:
LOG.error('Failed to cancel FTS job %s', job_id)
def _get_status(self, batch_id, optype):
if optype == 'transfer' or optype == 'staging':
sql = 'SELECT `id`, `job_id` FROM `fts_transfer_batches`'
sql += ' WHERE `task_type` = %s AND `fts_server_id` = %s AND `batch_id` = %s'
batch_data = self.db.query(sql, optype, self.server_id, batch_id)
task_table_name = 'fts_transfer_tasks'
else:
sql = 'SELECT `id`, `job_id` FROM `fts_deletion_batches`'
sql += ' WHERE `fts_server_id` = %s AND `batch_id` = %s'
batch_data = self.db.query(sql, self.server_id, batch_id)
task_table_name = 'fts_deletion_tasks'
message_pattern = re.compile(
'(?:DESTINATION|SOURCE|TRANSFER|DELETION) \[([0-9]+)\] (.*)')
results = []
for fts_batch_id, job_id in batch_data:
LOG.debug('Checking status of FTS %s batch %s', optype, job_id)
sql = 'SELECT `fts_file_id`, `id` FROM `{table}` WHERE `fts_batch_id` = %s'.format(
table=task_table_name)
fts_to_task = dict(self.db.xquery(sql, fts_batch_id))
try:
result = self._ftscall('get_job_status',
job_id=job_id,
list_files=True)
except:
LOG.error('Failed to get job status for FTS job %s', job_id)
continue
if optype == 'transfer' or optype == 'staging':
fts_files = result['files']
else:
fts_files = result['dm']
for fts_file in fts_files:
try:
task_id = fts_to_task[fts_file['file_id']]
except KeyError:
continue
state = fts_file['file_state']
exitcode = -1
start_time = None
finish_time = None
get_time = False
try:
message = fts_file['reason']
except KeyError:
message = None
if message is not None:
# Check if reason follows a known format (from which we can get the exit code)
matches = message_pattern.match(message)
if matches is not None:
exitcode = int(matches.group(1))
message = matches.group(2)
# Additionally, if the message is a known one, convert the exit code
c = find_msg_code(message)
if c is not None:
exitcode = c
# HDFS site with gridftp-hdfs gives a I/O error (500) when the file is not there
if optype == 'deletion' and 'Input/output error' in message:
exitcode = errno.ENOENT
if state == 'FINISHED':
status = FileQuery.STAT_DONE
exitcode = 0
get_time = True
elif state == 'FAILED':
status = FileQuery.STAT_FAILED
get_time = True
elif state == 'CANCELED':
status = FileQuery.STAT_CANCELLED
get_time = True
elif state == 'SUBMITTED':
status = FileQuery.STAT_NEW
else:
status = FileQuery.STAT_QUEUED
if optype == 'transfer' and exitcode == errno.EEXIST:
# Transfer + destination exists -> not an error
status = FileQuery.STAT_DONE
exitcode = 0
elif optype == 'deletion' and exitcode == errno.ENOENT:
# Deletion + destination does not exist -> not an error
status = FileQuery.STAT_DONE
exitcode = 0
if get_time:
try:
start_time = calendar.timegm(
time.strptime(fts_file['start_time'],
'%Y-%m-%dT%H:%M:%S'))
except TypeError: # start time is NULL (can happen when the job is cancelled)
start_time = None
try:
finish_time = calendar.timegm(
time.strptime(fts_file['finish_time'],
'%Y-%m-%dT%H:%M:%S'))
except TypeError:
start_time = None
LOG.debug('%s %d: %s, %d, %s, %s, %s', optype, task_id,
FileQuery.status_name(status), exitcode, message,
start_time, finish_time)
results.append((task_id, status, exitcode, message, start_time,
finish_time))
return results
def _write_history(self, history_db, task_id, history_id, optype):
if not self._read_only:
history_db.db.insert_update('fts_servers', ('url', ),
self.server_url)
try:
server_id = history_db.db.query(
'SELECT `id` FROM `fts_servers` WHERE `url` = %s',
self.server_url)[0]
except IndexError:
server_id = 0
sql = 'SELECT b.`job_id`, t.`fts_file_id` FROM `fts_{op}_tasks` AS t'
sql += ' INNER JOIN `fts_{op}_batches` AS b ON b.`id` = t.`fts_batch_id`'
sql += ' WHERE t.`id` = %s'
try:
fts_job_id, fts_file_id = self.db.query(sql.format(op=optype),
task_id)[0]
except IndexError:
return
if not self._read_only:
history_db.db.insert_update('fts_batches',
('fts_server_id', 'job_id'), server_id,
fts_job_id)
batch_id = history_db.db.query(
'SELECT `id` FROM `fts_batches` WHERE `fts_server_id` = %s AND `job_id` = %s',
server_id, fts_job_id)[0]
history_db.db.insert_update('fts_file_{op}s'.format(op=optype),
('id', 'fts_batch_id', 'fts_file_id'),
history_id, batch_id, fts_file_id)
def _forget_status(self, task_id, optype):
if self._read_only:
return
sql = 'DELETE FROM `fts_{optype}_tasks` WHERE `id` = %s'.format(
optype=optype)
self.db.query(sql, task_id)
def _forget_batch(self, batch_id, optype):
if self._read_only:
return
sql = 'DELETE FROM `fts_{optype}_batches` WHERE `batch_id` = %s'.format(
optype=optype)
self.db.query(sql, batch_id)
def _set_server_id(self):
if not self._read_only:
self.db.query(
'INSERT INTO `fts_servers` (`url`) VALUES (%s) ON DUPLICATE KEY UPDATE `url`=VALUES(`url`)',
self.server_url)
result = self.db.query(
'SELECT `id` FROM `fts_servers` WHERE `url` = %s', self.server_url)
if len(result) == 0:
self.server_id = 0
else:
self.server_id = result[0]
class StandaloneFileOperation(FileTransferOperation, FileTransferQuery,
FileDeletionOperation, FileDeletionQuery):
"""
Interface to in-house transfer & deletion daemon using MySQL for bookkeeping.
"""
def __init__(self, config):
FileTransferOperation.__init__(self, config)
FileTransferQuery.__init__(self, config)
FileDeletionOperation.__init__(self, config)
FileDeletionQuery.__init__(self, config)
self.db = MySQL(config.db_params)
def num_pending_transfers(self): #override
# FOD can throttle itself.
return 0
def num_pending_deletions(self): #override
# FOD can throttle itself.
return 0
def form_batches(self, tasks): #override
if len(tasks) == 0:
return []
if hasattr(tasks[0], 'source'):
# These are transfer tasks
by_endpoints = collections.defaultdict(list)
for task in tasks:
endpoints = (task.source, task.subscription.destination)
by_endpoints[endpoints].append(task)
return by_endpoints.values()
else:
by_endpoint = collections.defaultdict(list)
for task in tasks:
by_endpoint[task.desubscription.site].append(task)
return by_endpoint.values()
def start_transfers(self, batch_id, batch_tasks): #override
if len(batch_tasks) == 0:
return {}
result = {}
# tasks should all have the same source and destination
source = batch_tasks[0].source
destination = batch_tasks[0].subscription.destination
fields = ('id', 'source', 'destination', 'checksum_algo', 'checksum')
def yield_task_entry():
for task in batch_tasks:
lfile = task.subscription.file
lfn = lfile.lfn
source_pfn = source.to_pfn(lfn, 'gfal2')
dest_pfn = destination.to_pfn(lfn, 'gfal2')
if source_pfn is None or dest_pfn is None:
# either gfal2 is not supported or lfn could not be mapped
result[task] = False
continue
if self.checksum_algorithm:
checksum = (self.checksum_algorithm,
str(lfile.checksum[self.checksum_index]))
else:
checksum = (None, None)
result[task] = True
yield (task.id, source_pfn, dest_pfn) + checksum
if not self._read_only:
sql = 'INSERT INTO `standalone_transfer_batches` (`batch_id`, `source_site`, `destination_site`) VALUES (%s, %s, %s)'
self.db.query(sql, batch_id, source.name, destination.name)
self.db.insert_many('standalone_transfer_tasks', fields, None,
yield_task_entry())
LOG.debug(
'Inserted %d entries to standalone_transfer_tasks for batch %d.',
len(batch_tasks), batch_id)
return result
def start_deletions(self, batch_id, batch_tasks): #override
if len(batch_tasks) == 0:
return {}
result = {}
# tasks should all have the same target site
site = batch_tasks[0].desubscription.site
fields = ('id', 'file')
def yield_task_entry():
for task in batch_tasks:
lfn = task.desubscription.file.lfn
pfn = site.to_pfn(lfn, 'gfal2')
if pfn is None:
# either gfal2 is not supported or lfn could not be mapped
result[task] = False
continue
result[task] = True
yield (task.id, pfn)
if not self._read_only:
sql = 'INSERT INTO `standalone_deletion_batches` (`batch_id`, `site`) VALUES (%s, %s)'
self.db.query(sql, batch_id, site.name)
self.db.insert_many('standalone_deletion_tasks', fields, None,
yield_task_entry())
LOG.debug(
'Inserted %d entries to standalone_deletion_tasks for batch %d.',
len(batch_tasks), batch_id)
return result
def cancel_transfers(self, task_ids): #override
return self._cancel(task_ids, 'transfer')
def cancel_deletions(self, task_ids): #override
return self._cancel(task_ids, 'deletion')
def cleanup(self): #override
sql = 'DELETE FROM f USING `standalone_transfer_tasks` AS f LEFT JOIN `transfer_tasks` AS t ON t.`id` = f.`id` WHERE t.`id` IS NULL'
self.db.query(sql)
sql = 'DELETE FROM f USING `standalone_deletion_tasks` AS f LEFT JOIN `deletion_tasks` AS t ON t.`id` = f.`id` WHERE t.`id` IS NULL'
self.db.query(sql)
sql = 'DELETE FROM f USING `standalone_transfer_batches` AS f LEFT JOIN `transfer_batches` AS t ON t.`id` = f.`batch_id` WHERE t.`id` IS NULL'
self.db.query(sql)
sql = 'DELETE FROM f USING `standalone_deletion_batches` AS f LEFT JOIN `deletion_batches` AS t ON t.`id` = f.`batch_id` WHERE t.`id` IS NULL'
self.db.query(sql)
# Delete the source tasks - caution: wipes out all tasks when switching the operation backend
sql = 'DELETE FROM t USING `transfer_tasks` AS t'
sql += ' LEFT JOIN `standalone_transfer_tasks` AS f ON f.`id` = t.`id`'
sql += ' WHERE f.`id` IS NULL'
self.db.query(sql)
sql = 'DELETE FROM t USING `deletion_tasks` AS t'
sql += ' LEFT JOIN `standalone_deletion_tasks` AS f ON f.`id` = t.`id`'
sql += ' WHERE f.`id` IS NULL'
self.db.query(sql)
def get_transfer_status(self, batch_id): #override
return self._get_status(batch_id, 'transfer')
def get_deletion_status(self, batch_id): #override
return self._get_status(batch_id, 'deletion')
def write_transfer_history(self, history_db, task_id,
history_id): #override
pass
def write_deletion_history(self, history_db, task_id,
history_id): #override
pass
def forget_transfer_status(self, task_id): #override
return self._forget_status(task_id, 'transfer')
def forget_deletion_status(self, task_id): #override
return self._forget_status(task_id, 'deletion')
def forget_transfer_batch(self, batch_id): #override
return self._forget_batch(batch_id, 'transfer')
def forget_deletion_batch(self, batch_id): #override
return self._forget_batch(batch_id, 'deletion')
def _cancel(self, task_ids, optype):
sql = 'UPDATE `standalone_{op}_tasks` SET `status` = \'cancelled\''.format(
op=optype)
self.db.execute_many(sql, 'id', task_ids,
['`status` IN (\'new\', \'queued\')'])
def _get_status(self, batch_id, optype):
sql = 'SELECT q.`id`, a.`status`, a.`exitcode`, a.`message`, UNIX_TIMESTAMP(a.`start_time`), UNIX_TIMESTAMP(a.`finish_time`) FROM `standalone_{op}_tasks` AS a'
sql += ' INNER JOIN `{op}_tasks` AS q ON q.`id` = a.`id`'
sql += ' WHERE q.`batch_id` = %s'
sql = sql.format(op=optype)
return [(i, FileQuery.status_val(s), c, m, t, f)
for (i, s, c, m, t, f) in self.db.xquery(sql, batch_id)]
def _forget_status(self, task_id, optype):
if self._read_only:
return
sql = 'DELETE FROM `standalone_{op}_tasks` WHERE `id` = %s'.format(
op=optype)
self.db.query(sql, task_id)
def _forget_batch(self, batch_id, optype):
if self._read_only:
return
sql = 'DELETE FROM `standalone_{op}_batches` WHERE `batch_id` = %s'
self.db.query(sql.format(op=optype), batch_id)
class StandaloneFileOperation(FileTransferOperation, FileTransferQuery, FileDeletionOperation, FileDeletionQuery):
"""
Interface to in-house transfer & deletion daemon using MySQL for bookkeeping.
"""
def __init__(self, config):
FileTransferOperation.__init__(self, config)
FileTransferQuery.__init__(self, config)
FileDeletionOperation.__init__(self, config)
FileDeletionQuery.__init__(self, config)
self.db = MySQL(config.db_params)
def num_pending_transfers(self): #override
# FOD can throttle itself.
return 0
def num_pending_deletions(self): #override
# FOD can throttle itself.
return 0
def form_batches(self, tasks): #override
if len(tasks) == 0:
return []
if hasattr(tasks[0], 'source'):
# These are transfer tasks
by_endpoints = collections.defaultdict(list)
for task in tasks:
endpoints = (task.source, task.subscription.destination)
by_endpoints[endpoints].append(task)
return by_endpoints.values()
else:
by_endpoint = collections.defaultdict(list)
for task in tasks:
by_endpoint[task.desubscription.site].append(task)
return by_endpoint.values()
def start_transfers(self, batch_id, batch_tasks): #override
if len(batch_tasks) == 0:
return {}
result = {}
# tasks should all have the same source and destination
source = batch_tasks[0].source
destination = batch_tasks[0].subscription.destination
fields = ('id', 'source', 'destination', 'checksum_algo', 'checksum')
def yield_task_entry():
for task in batch_tasks:
lfile = task.subscription.file
lfn = lfile.lfn
source_pfn = source.to_pfn(lfn, 'gfal2')
dest_pfn = destination.to_pfn(lfn, 'gfal2')
if source_pfn is None or dest_pfn is None:
# either gfal2 is not supported or lfn could not be mapped
result[task] = False
continue
if self.checksum_algorithm:
checksum = (self.checksum_algorithm, str(lfile.checksum[self.checksum_index]))
else:
checksum = (None, None)
result[task] = True
yield (task.id, source_pfn, dest_pfn) + checksum
if not self._read_only:
sql = 'INSERT INTO `standalone_transfer_batches` (`batch_id`, `source_site`, `destination_site`) VALUES (%s, %s, %s)'
self.db.query(sql, batch_id, source.name, destination.name)
self.db.insert_many('standalone_transfer_tasks', fields, None, yield_task_entry())
LOG.debug('Inserted %d entries to standalone_transfer_tasks for batch %d.', len(batch_tasks), batch_id)
return result
def start_deletions(self, batch_id, batch_tasks): #override
if len(batch_tasks) == 0:
return {}
result = {}
# tasks should all have the same target site
site = batch_tasks[0].desubscription.site
fields = ('id', 'file')
def yield_task_entry():
for task in batch_tasks:
lfn = task.desubscription.file.lfn
pfn = site.to_pfn(lfn, 'gfal2')
if pfn is None:
# either gfal2 is not supported or lfn could not be mapped
result[task] = False
continue
result[task] = True
yield (task.id, pfn)
if not self._read_only:
sql = 'INSERT INTO `standalone_deletion_batches` (`batch_id`, `site`) VALUES (%s, %s)'
self.db.query(sql, batch_id, site.name)
self.db.insert_many('standalone_deletion_tasks', fields, None, yield_task_entry())
LOG.debug('Inserted %d entries to standalone_deletion_tasks for batch %d.', len(batch_tasks), batch_id)
return result
def cancel_transfers(self, task_ids): #override
return self._cancel(task_ids, 'transfer')
def cancel_deletions(self, task_ids): #override
return self._cancel(task_ids, 'deletion')
def cleanup(self): #override
sql = 'DELETE FROM f USING `standalone_transfer_tasks` AS f LEFT JOIN `transfer_tasks` AS t ON t.`id` = f.`id` WHERE t.`id` IS NULL'
self.db.query(sql)
sql = 'DELETE FROM f USING `standalone_deletion_tasks` AS f LEFT JOIN `deletion_tasks` AS t ON t.`id` = f.`id` WHERE t.`id` IS NULL'
self.db.query(sql)
sql = 'DELETE FROM f USING `standalone_transfer_batches` AS f LEFT JOIN `transfer_batches` AS t ON t.`id` = f.`batch_id` WHERE t.`id` IS NULL'
self.db.query(sql)
sql = 'DELETE FROM f USING `standalone_deletion_batches` AS f LEFT JOIN `deletion_batches` AS t ON t.`id` = f.`batch_id` WHERE t.`id` IS NULL'
self.db.query(sql)
# Delete the source tasks - caution: wipes out all tasks when switching the operation backend
sql = 'DELETE FROM t USING `transfer_tasks` AS t'
sql += ' LEFT JOIN `standalone_transfer_tasks` AS f ON f.`id` = t.`id`'
sql += ' WHERE f.`id` IS NULL'
self.db.query(sql)
sql = 'DELETE FROM t USING `deletion_tasks` AS t'
sql += ' LEFT JOIN `standalone_deletion_tasks` AS f ON f.`id` = t.`id`'
sql += ' WHERE f.`id` IS NULL'
self.db.query(sql)
def get_transfer_status(self, batch_id): #override
return self._get_status(batch_id, 'transfer')
def get_deletion_status(self, batch_id): #override
return self._get_status(batch_id, 'deletion')
def write_transfer_history(self, history_db, task_id, history_id): #override
pass
def write_deletion_history(self, history_db, task_id, history_id): #override
pass
def forget_transfer_status(self, task_id): #override
return self._forget_status(task_id, 'transfer')
def forget_deletion_status(self, task_id): #override
return self._forget_status(task_id, 'deletion')
def forget_transfer_batch(self, batch_id): #override
return self._forget_batch(batch_id, 'transfer')
def forget_deletion_batch(self, batch_id): #override
return self._forget_batch(batch_id, 'deletion')
def _cancel(self, task_ids, optype):
sql = 'UPDATE `standalone_{op}_tasks` SET `status` = \'cancelled\''.format(op = optype)
self.db.execute_many(sql, 'id', task_ids, ['`status` IN (\'new\', \'queued\')'])
def _get_status(self, batch_id, optype):
sql = 'SELECT q.`id`, a.`status`, a.`exitcode`, a.`message`, UNIX_TIMESTAMP(a.`start_time`), UNIX_TIMESTAMP(a.`finish_time`) FROM `standalone_{op}_tasks` AS a'
sql += ' INNER JOIN `{op}_tasks` AS q ON q.`id` = a.`id`'
sql += ' WHERE q.`batch_id` = %s'
sql = sql.format(op = optype)
return [(i, FileQuery.status_val(s), c, m, t, f) for (i, s, c, m, t, f) in self.db.xquery(sql, batch_id)]
def _forget_status(self, task_id, optype):
if self._read_only:
return
sql = 'DELETE FROM `standalone_{op}_tasks` WHERE `id` = %s'.format(op = optype)
self.db.query(sql, task_id)
def _forget_batch(self, batch_id, optype):
if self._read_only:
return
sql = 'DELETE FROM `standalone_{op}_batches` WHERE `batch_id` = %s'
self.db.query(sql.format(op = optype), batch_id)
class RLFSM(object):
"""
File operations manager using MySQL tables for queue bookkeeping. Also implies the
inventory backend is MySQL.
"""
class Subscription(object):
__slots__ = ['id', 'status', 'file', 'destination', 'disk_sources', 'tape_sources', 'failed_sources', 'hold_reason']
def __init__(self, id, status, file, destination, disk_sources, tape_sources, failed_sources = None, hold_reason = None):
self.id = id
self.status = status
self.file = file
self.destination = destination
self.disk_sources = disk_sources
self.tape_sources = tape_sources
self.failed_sources = failed_sources
self.hold_reason = hold_reason
class TransferTask(object):
__slots__ = ['id', 'subscription', 'source']
def __init__(self, subscription, source):
self.id = None
self.subscription = subscription
self.source = source
class Desubscription(object):
__slots__ = ['id', 'status', 'file', 'site']
def __init__(self, id, status, file, site):
self.id = id
self.status = status
self.file = file
self.site = site
class DeletionTask(object):
__slots__ = ['id', 'desubscription']
def __init__(self, desubscription):
self.id = None
self.desubscription = desubscription
# default config
_config = ''
@staticmethod
def set_default(config):
RLFSM._config = Configuration(config)
def __init__(self, config = None):
if config is None:
config = RLFSM._config
# Handle to the inventory DB
self.db = MySQL(config.db.db_params)
# Handle to the history DB
self.history_db = HistoryDatabase(config.get('history', None))
# FileTransferOperation backend (can make it a map from (source, dest) to operator)
self.transfer_operations = []
if 'transfer' in config:
for condition_text, module, conf in config.transfer:
if condition_text is None: # default
condition = None
else:
condition = Condition(condition_text, site_variables)
self.transfer_operations.append((condition, FileTransferOperation.get_instance(module, conf)))
if 'transfer_query' in config:
self.transfer_queries = []
for condition_text, module, conf in config.transfer_query:
if condition_text is None: # default
condition = None
else:
condition = Condition(condition_text, site_variables)
self.transfer_queries.append(condition, FileTransferQuery.get_instance(module, conf))
else:
self.transfer_queries = self.transfer_operations
if 'deletion' in config:
self.deletion_operations = []
for condition_text, module, conf in config.deletion:
if condition_text is None: # default
condition = None
else:
condition = Condition(condition_text, site_variables)
self.deletion_operations.append(condition, FileDeletionOperation.get_instance(module, conf))
else:
self.deletion_operations = self.transfer_operations
if 'deletion_query' in config:
self.deletion_queries = []
for condition_text, module, conf in config.deletion_query:
if condition_text is None: # default
condition = None
else:
condition = Condition(condition_text, site_variables)
self.deletion_queries.append(condition, FileDeletionQuery.get_instance(module, conf))
else:
self.deletion_queries = self.deletion_operations
self.sites_in_downtime = []
# Cycle thread
self.main_cycle = None
self.cycle_stop = threading.Event()
self.set_read_only(config.get('read_only', False))
def set_read_only(self, value = True):
self._read_only = value
self.history_db.set_read_only(value)
for _, op in self.transfer_operations:
op.set_read_only(value)
if self.transfer_queries is not self.transfer_operations:
for _, qry in self.transfer_queries:
qry.set_read_only(value)
if self.deletion_operations is not self.transfer_operations:
for _, op in self.deletion_operations:
op.set_read_only(value)
if self.deletion_queries is not self.deletion_operations:
for _, qry in self.deletion_queries:
qry.set_read_only(value)
def start(self, inventory):
"""
Start the file operations management cycle. Issue transfer and deletion tasks to the backend.
"""
if self.main_cycle is not None:
return
LOG.info('Starting file operations manager')
self.main_cycle = threading.Thread(target = self._run_cycle, name = 'FOM', args = (inventory,))
self.main_cycle.start()
LOG.info('Started file operations manager.')
def stop(self):
"""
Stop the file operations management cycle.
"""
LOG.info('Stopping file operations manager.')
self.cycle_stop.set()
self.main_cycle.join()
self.main_cycle = None
self.cycle_stop.clear()
def transfer_files(self, inventory):
"""
Routine for managing file transfers.
1. Query the file transfer agent and update the status of known subscriptions.
2. Pick up new subscriptions.
3. Select the source for each transfer.
4. Organize the transfers into batches.
5. Start the transfers.
The routine can be stopped almost at any point without corrupting the state machine.
The only cases where stopping is problematic are within self._update_status and self._start_transfers.
@param inventory The inventory.
"""
self._cleanup()
LOG.debug('Clearing cancelled transfer tasks.')
task_ids = self._get_cancelled_tasks('transfer')
for _, op in self.transfer_operations:
op.cancel_transfers(task_ids)
if self.cycle_stop.is_set():
return
LOG.debug('Fetching subscription status from the file operation agent.')
self._update_status('transfer')
if self.cycle_stop.is_set():
return
LOG.debug('Filtering out transfers to unavailable destinations.')
if not self._read_only:
for site in self.sites_in_downtime:
self.db.query('UPDATE `file_subscriptions` SET `status` = \'held\', `hold_reason` = \'site_unavailable\' WHERE `site_id` = (SELECT `id` FROM `sites` WHERE `name` = %s)', site.name)
if self.cycle_stop.is_set():
return
LOG.debug('Collecting new transfer subscriptions.')
subscriptions = self.get_subscriptions(inventory, op = 'transfer', status = ['new', 'retry'])
if self.cycle_stop.is_set():
return
# We check the operators here because get_subscriptions does some state update and we want that to happen
pending_count = {}
n_available = 0
for _, op in self.transfer_operations:
pending_count[op] = op.num_pending_transfers()
if pending_count[op] <= op.max_pending_transfers:
n_available += 1
if n_available == 0:
LOG.info('No transfer operators are available at the moment.')
return
LOG.debug('Identifying source sites for %d transfers.', len(subscriptions))
tasks = self._select_source(subscriptions)
if self.cycle_stop.is_set():
return
LOG.debug('Organizing %d transfers into batches.', len(tasks))
by_dest = {}
for task in tasks:
try:
by_dest[task.subscription.destination].append(task)
except KeyError:
by_dest[task.subscription.destination] = [task]
def issue_tasks(op, my_tasks):
if len(my_tasks) == 0:
return 0, 0, 0
batches = op.form_batches(my_tasks)
if self.cycle_stop.is_set():
return 0, 0, 0
nb = 0
ns = 0
nf = 0
LOG.debug('Issuing transfer tasks.')
for batch_tasks in batches:
s, f = self._start_transfers(op, batch_tasks)
nb += 1
ns += s
nf += f
pending_count[op] += s
if pending_count[op] > op.max_pending_transfers:
break
if self.cycle_stop.is_set():
break
return nb, ns, nf
num_success = 0
num_failure = 0
num_batches = 0
for condition, op in self.transfer_operations:
if condition is None:
default_op = op
continue
my_tasks = []
for site in by_dest.keys():
if condition.match(site):
my_tasks.extend(by_dest.pop(site))
if pending_count[op] > op.max_pending_transfers:
continue
nb, ns, nf = issue_tasks(op, my_tasks)
num_batches += nb
num_success += ns
num_failure += nf
if self.cycle_stop.is_set():
break
else:
# default condition
if pending_count[default_op] <= default_op.max_pending_transfers:
my_tasks = sum(by_dest.itervalues(), [])
nb, ns, nf = issue_tasks(default_op, my_tasks)
num_batches += nb
num_success += ns
num_failure += nf
if num_success + num_failure != 0:
LOG.info('Issued transfer tasks: %d success, %d failure. %d batches.', num_success, num_failure, num_batches)
else:
LOG.debug('Issued transfer tasks: %d success, %d failure. %d batches.', num_success, num_failure, num_batches)
def delete_files(self, inventory):
"""
Routine for managing file deletions.
1. Query the file deletion agent and update the status of known subscriptions.
2. Register the paths for completed deletions as candidates of empty directories.
3. Pick up new subscriptions.
4. Organize the deletions into batches.
5. Start the deletions.
The routine can be stopped almost at any point without corrupting the state machine.
The only cases where stopping is problematic are within self._update_status and self._start_deletions.
@param inventory The inventory.
"""
self._cleanup()
LOG.debug('Clearing cancelled deletion tasks.')
task_ids = self._get_cancelled_tasks('deletion')
for _, op in self.deletion_operations:
op.cancel_deletions(task_ids)
if self.cycle_stop.is_set():
return
LOG.debug('Fetching deletion status from the file operation agent.')
completed = self._update_status('deletion')
LOG.debug('Recording candidates for empty directories.')
self._set_dirclean_candidates(completed, inventory)
if self.cycle_stop.is_set():
return
LOG.debug('Filtering out transfers to unavailable destinations.')
if not self._read_only:
for site in self.sites_in_downtime:
self.db.query('UPDATE `file_subscriptions` SET `status` = \'held\', `hold_reason` = \'site_unavailable\' WHERE `site_id` = (SELECT `id` FROM `sites` WHERE `name` = %s)', site.name)
if self.cycle_stop.is_set():
return
LOG.debug('Collecting new deletion subscriptions.')
desubscriptions = self.get_subscriptions(inventory, op = 'deletion', status = ['new', 'retry'])
if self.cycle_stop.is_set():
return
# See transfer_files
pending_count = {}
n_available = 0
for _, op in self.deletion_operations:
pending_count[op] = op.num_pending_deletions()
if pending_count[op] <= op.max_pending_deletions:
n_available += 1
if n_available == 0:
LOG.info('No deletion operators are available at the moment.')
return
tasks = [RLFSM.DeletionTask(d) for d in desubscriptions]
by_site = {}
for task in tasks:
try:
by_site[task.desubscription.site].append(task)
except KeyError:
by_site[task.desubscription.site] = [task]
LOG.debug('Organizing the deletions into batches.')
def issue_tasks(op, my_tasks):
if len(my_tasks) == 0:
return 0, 0, 0
batches = op.form_batches(my_tasks)
if self.cycle_stop.is_set():
return 0, 0, 0
nb = 0
ns = 0
nf = 0
LOG.debug('Issuing deletion tasks for %d batches.', len(batches))
for batch_tasks in batches:
LOG.debug('Batch with %d tasks.', len(batch_tasks))
s, f = self._start_deletions(op, batch_tasks)
nb += 1
ns += s
nf += f
pending_count[op] += s
if pending_count[op] > op.max_pending_deletions:
break
if self.cycle_stop.is_set():
break
return nb, ns, nf
num_success = 0
num_failure = 0
num_batches = 0
for condition, op in self.deletion_operations:
if condition is None:
default_op = op
continue
my_tasks = []
for site in by_site.keys():
if condition.match(site):
my_tasks.extend(by_site.pop(site))
if pending_count[op] > op.max_pending_deletions:
continue
nb, ns, nf = issue_tasks(op, my_tasks)
num_batches += nb;
num_success += ns;
num_failure += nf;
if self.cycle_stop.is_set():
break
else:
# default condition
if pending_count[default_op] <= default_op.max_pending_deletions:
my_tasks = sum(by_site.itervalues(), [])
nb, ns, nf = issue_tasks(default_op, my_tasks)
num_batches += nb;
num_success += ns;
num_failure += nf;
if num_success + num_failure != 0:
LOG.info('Issued deletion tasks: %d success, %d failure. %d batches.', num_success, num_failure, num_batches)
else:
LOG.debug('Issued deletion tasks: %d success, %d failure. %d batches.', num_success, num_failure, num_batches)
def subscribe_file(self, site, lfile):
"""
Make a file subscription at a site.
@param site Site object
@param lfile File object
"""
LOG.debug('Subscribing %s to %s', lfile.lfn, site.name)
self._subscribe(site, lfile, 0)
def desubscribe_file(self, site, lfile):
"""
Book deletion of a file at a site.
@param site Site object
@param lfile File object
"""
LOG.debug('Desubscribing %s from %s', lfile.lfn, site.name)
self._subscribe(site, lfile, 1)
def cancel_subscription(self, site = None, lfile = None, sub_id = None):
sql = 'UPDATE `file_subscriptions` SET `status` = \'cancelled\' WHERE '
if sub_id is None:
if site is None or lfile is None:
raise OperationalError('site and lfile must be non-None.')
sql += '`file_id` = %s AND `site_id` = %s'
if not self._read_only:
self.db.query(sql, lfile.id, site.id)
else:
sql += '`id` = %s'
if not self._read_only:
self.db.query(sql, sub_id)
def cancel_desubscription(self, site = None, lfile = None, sub_id = None):
self.cancel_subscription(site = site, lfile = lfile, sub_id = sub_id)
def convert_pre_subscriptions(self, inventory):
sql = 'SELECT `id`, `file_name`, `site_name`, UNIX_TIMESTAMP(`created`), `delete` FROM `file_pre_subscriptions`'
sids = []
for sid, lfn, site_name, created, delete in self.db.query(sql):
lfile = inventory.find_file(lfn)
if lfile is None or lfile.id == 0:
continue
try:
site = inventory.sites[site_name]
except KeyError:
continue
if site.id == 0:
continue
sids.append(sid)
self._subscribe(site, lfile, delete, created = created)
if not self._read_only:
self.db.lock_tables(write = ['file_pre_subscriptions'])
self.db.delete_many('file_pre_subscriptions', 'id', sids)
if self.db.query('SELECT COUNT(*) FROM `file_pre_subscriptions`')[0] == 0:
self.db.query('ALTER TABLE `file_pre_subscriptions` AUTO_INCREMENT = 1')
self.db.unlock_tables()
def get_subscriptions(self, inventory, op = None, status = None):
"""
Return a list containing Subscription and Desubscription objects ordered by the id.
@param inventory Dynamo inventory
@param op If set to 'transfer' or 'deletion', limit to the operation type.
@param status If not None, set to list of status strings to limit the query.
"""
# First convert all pre-subscriptions
self.convert_pre_subscriptions(inventory)
subscriptions = []
get_all = 'SELECT u.`id`, u.`status`, u.`delete`, f.`block_id`, f.`name`, s.`name`, u.`hold_reason` FROM `file_subscriptions` AS u'
get_all += ' INNER JOIN `files` AS f ON f.`id` = u.`file_id`'
get_all += ' INNER JOIN `sites` AS s ON s.`id` = u.`site_id`'
constraints = []
if op == 'transfer':
constraints.append('u.`delete` = 0')
elif op == 'deletion':
constraints.append('u.`delete` = 1')
if status is not None:
constraints.append('u.`status` IN ' + MySQL.stringify_sequence(status))
if len(constraints) != 0:
get_all += ' WHERE ' + ' AND '.join(constraints)
get_all += ' ORDER BY s.`id`, f.`block_id`'
get_tried_sites = 'SELECT s.`name`, f.`exitcode` FROM `failed_transfers` AS f'
get_tried_sites += ' INNER JOIN `sites` AS s ON s.`id` = f.`source_id`'
get_tried_sites += ' WHERE f.`subscription_id` = %s'
_destination_name = ''
_block_id = -1
no_source = []
all_failed = []
to_done = []
COPY = 0
DELETE = 1
for row in self.db.query(get_all):
sub_id, st, optype, block_id, file_name, site_name, hold_reason = row
if site_name != _destination_name:
_destination_name = site_name
try:
destination = inventory.sites[site_name]
except KeyError:
# Site disappeared from the inventory - weird but can happen!
destination = None
_block_id = -1
if destination is None:
continue
if block_id != _block_id:
lfile = inventory.find_file(file_name)
if lfile is None:
# Dataset, block, or file was deleted from the inventory earlier in this process (deletion not reflected in the inventory store yet)
continue
_block_id = block_id
block = lfile.block
dest_replica = block.find_replica(destination)
else:
lfile = block.find_file(file_name)
if lfile is None:
# Dataset, block, or file was deleted from the inventory earlier in this process (deletion not reflected in the inventory store yet)
continue
if dest_replica is None and st != 'cancelled':
LOG.debug('Destination replica for %s does not exist. Canceling the subscription.', file_name)
# Replica was invalidated
sql = 'UPDATE `file_subscriptions` SET `status` = \'cancelled\''
sql += ' WHERE `id` = %s'
if not self._read_only:
self.db.query(sql, sub_id)
if status is not None and 'cancelled' not in status:
# We are not asked to return cancelled subscriptions
continue
st = 'cancelled'
if optype == COPY:
disk_sources = None
tape_sources = None
failed_sources = None
if st not in ('done', 'held', 'cancelled'):
if dest_replica.has_file(lfile):
LOG.debug('%s already exists at %s', file_name, site_name)
to_done.append(sub_id)
st = 'done'
else:
disk_sources = []
tape_sources = []
for replica in block.replicas:
if replica.site == destination or replica.site.status != Site.STAT_READY:
continue
if replica.has_file(lfile):
if replica.site.storage_type == Site.TYPE_DISK:
disk_sources.append(replica.site)
elif replica.site.storage_type == Site.TYPE_MSS:
tape_sources.append(replica.site)
if len(disk_sources) + len(tape_sources) == 0:
LOG.warning('Transfer of %s to %s has no source.', file_name, site_name)
no_source.append(sub_id)
st = 'held'
if st == 'retry':
failed_sources = {}
for source_name, exitcode in self.db.query(get_tried_sites, sub_id):
try:
source = inventory.sites[source_name]
except KeyError:
# this site may have been deleted in this process
continue
try:
failed_sources[source].append(exitcode)
except KeyError:
if source not in disk_sources and source not in tape_sources:
# this is not a source site any more
continue
failed_sources[source] = [exitcode]
if len(failed_sources) == len(disk_sources) + len(tape_sources):
# transfers from all sites failed at least once
for codes in failed_sources.itervalues():
if codes[-1] not in irrecoverable_errors:
# This site failed for a recoverable reason
break
else:
# last failure from all sites due to irrecoverable errors
LOG.warning('Transfer of %s to %s failed from all sites.', file_name, site_name)
all_failed.append(sub_id)
st = 'held'
# st value may have changed - filter again
if status is None or st in status:
subscription = RLFSM.Subscription(sub_id, st, lfile, destination, disk_sources, tape_sources, failed_sources, hold_reason)
subscriptions.append(subscription)
elif optype == DELETE:
if st not in ('done', 'held', 'cancelled') and not dest_replica.has_file(lfile):
LOG.debug('%s is already gone from %s', file_name, site_name)
to_done.append(sub_id)
st = 'done'
if status is None or st in status:
desubscription = RLFSM.Desubscription(sub_id, st, lfile, destination)
subscriptions.append(desubscription)
if len(to_done) + len(no_source) + len(all_failed) != 0:
msg = 'Subscriptions terminated directly: %d done' % len(to_done)
if len(no_source) != 0:
msg += ', %d held with reason "no_source"' % len(no_source)
if len(all_failed) != 0:
msg += ', %d held with reason "all_failed"' % len(all_failed)
LOG.info(msg)
if not self._read_only:
self.db.execute_many('UPDATE `file_subscriptions` SET `status` = \'done\', `last_update` = NOW()', 'id', to_done)
self.db.execute_many('UPDATE `file_subscriptions` SET `status` = \'held\', `hold_reason` = \'no_source\', `last_update` = NOW()', 'id', no_source)
self.db.execute_many('UPDATE `file_subscriptions` SET `status` = \'held\', `hold_reason` = \'all_failed\', `last_update` = NOW()', 'id', all_failed)
# Clean up subscriptions for deleted files / sites
sql = 'DELETE FROM u USING `file_subscriptions` AS u'
sql += ' LEFT JOIN `files` AS f ON f.`id` = u.`file_id`'
sql += ' LEFT JOIN `sites` AS s ON s.`id` = u.`site_id`'
sql += ' WHERE f.`name` IS NULL OR s.`name` IS NULL'
self.db.query(sql)
sql = 'DELETE FROM f USING `failed_transfers` AS f'
sql += ' LEFT JOIN `file_subscriptions` AS u ON u.`id` = f.`subscription_id`'
sql += ' WHERE u.`id` IS NULL'
self.db.query(sql)
return subscriptions
def close_subscriptions(self, done_ids):
"""
Get subscription completion acknowledgments.
"""
if not self._read_only:
self.db.delete_many('file_subscriptions', 'id', done_ids)
def release_subscription(self, subscription):
"""
Clear failed transfers list and set the subscription status to retry.
"""
if subscription.status != 'held':
return
if self._read_only:
return
self.db.query('DELETE FROM `failed_transfers` WHERE `subscription_id` = %s', subscription.id)
self.db.query('UPDATE `file_subscriptions` SET `status` = \'retry\' WHERE `id` = %s', subscription.id)
def _run_cycle(self, inventory):
while True:
if self.cycle_stop.is_set():
break
LOG.debug('Checking and executing new file transfer subscriptions.')
self.transfer_files(inventory)
if self.cycle_stop.is_set():
break
LOG.debug('Checking and executing new file deletion subscriptions.')
self.delete_files(inventory)
is_set = self.cycle_stop.wait(30)
if is_set: # is true if in Python 2.7 and the flag is set
break
def _cleanup(self):
if self._read_only:
return
# Make the tables consistent in case the previous cycles was terminated prematurely
# There should not be tasks with subscription status new
sql = 'DELETE FROM t USING `transfer_tasks` AS t'
sql += ' INNER JOIN `file_subscriptions` AS u ON u.`id` = t.`subscription_id`'
sql += ' WHERE u.`status` IN (\'new\', \'retry\')'
self.db.query(sql)
sql = 'DELETE FROM t USING `deletion_tasks` AS t'
sql += ' INNER JOIN `file_subscriptions` AS u ON u.`id` = t.`subscription_id`'
sql += ' WHERE u.`status` IN (\'new\', \'retry\')'
self.db.query(sql)
# There should not be batches with no tasks
sql = 'DELETE FROM b USING `transfer_batches` AS b LEFT JOIN `transfer_tasks` AS t ON t.`batch_id` = b.`id` WHERE t.`batch_id` IS NULL'
self.db.query(sql)
sql = 'DELETE FROM b USING `deletion_batches` AS b LEFT JOIN `deletion_tasks` AS t ON t.`batch_id` = b.`id` WHERE t.`batch_id` IS NULL'
self.db.query(sql)
# and tasks with no batches
sql = 'DELETE FROM t USING `transfer_tasks` AS t LEFT JOIN `transfer_batches` AS b ON b.`id` = t.`batch_id` WHERE b.`id` IS NULL'
self.db.query(sql)
sql = 'DELETE FROM t USING `deletion_tasks` AS t LEFT JOIN `deletion_batches` AS b ON b.`id` = t.`batch_id` WHERE b.`id` IS NULL'
self.db.query(sql)
# Cleanup the plugins (might delete tasks)
for _, op in self.transfer_operations:
op.cleanup()
if self.deletion_operations is not self.transfer_operations:
for _, op in self.deletion_operations:
op.cleanup()
# Reset inbatch subscriptions with no task to new state
sql = 'UPDATE `file_subscriptions` SET `status` = \'new\' WHERE `status` = \'inbatch\' AND `id` NOT IN (SELECT `subscription_id` FROM `transfer_tasks`) AND `id` NOT IN (SELECT `subscription_id` FROM `deletion_tasks`)'
self.db.query(sql)
# Delete canceled subscriptions with no task (ones with task need to be archived in update_status)
sql = 'DELETE FROM u USING `file_subscriptions` AS u LEFT JOIN `transfer_tasks` AS t ON t.`subscription_id` = u.`id` WHERE u.`delete` = 0 AND u.`status` = \'cancelled\' AND t.`id` IS NULL'
self.db.query(sql)
sql = 'DELETE FROM u USING `file_subscriptions` AS u LEFT JOIN `deletion_tasks` AS t ON t.`subscription_id` = u.`id` WHERE u.`delete` = 1 AND u.`status` = \'cancelled\' AND t.`id` IS NULL'
self.db.query(sql)
# Delete failed transfers with no subscription
sql = 'DELETE FROM f USING `failed_transfers` AS f LEFT JOIN `file_subscriptions` AS u ON u.`id` = f.`subscription_id` WHERE u.`id` IS NULL'
self.db.query(sql)
def _subscribe(self, site, lfile, delete, created = None):
opp_op = 0 if delete == 1 else 1
now = time.strftime('%Y-%m-%d %H:%M:%S')
if created is None:
created = now
else:
created = datetime.datetime(*time.localtime(created)[:6])
if lfile.id == 0 or site.id == 0:
# file is not registered in inventory store yet; update the presubscription
if not self._read_only:
fields = ('file_name', 'site_name', 'created', 'delete')
self.db.insert_update('file_pre_subscriptions', fields, lfile.lfn, site.name, now, delete, update_columns = ('delete',))
return
if not self._read_only:
self.db.lock_tables(write = ['file_subscriptions'])
try:
sql = 'UPDATE `file_subscriptions` SET `status` = \'cancelled\''
sql += ' WHERE `file_id` = %s AND `site_id` = %s AND `delete` = %s'
sql += ' AND `status` IN (\'new\', \'inbatch\', \'retry\', \'held\')'
if not self._read_only:
self.db.query(sql, lfile.id, site.id, opp_op)
fields = ('file_id', 'site_id', 'status', 'delete', 'created', 'last_update')
if not self._read_only:
self.db.insert_update('file_subscriptions', fields, lfile.id, site.id, 'new', delete, now, now, update_columns = ('status', 'last_update'))
finally:
if not self._read_only:
self.db.unlock_tables()
def _get_cancelled_tasks(self, optype):
if optype == 'transfer':
delete = 0
else:
delete = 1
sql = 'SELECT q.`id` FROM `{op}_tasks` AS q'.format(op = optype)
sql += ' INNER JOIN `file_subscriptions` AS u ON u.`id` = q.`subscription_id`'
sql += ' WHERE u.`status` = \'cancelled\' AND u.`delete` = %d' % delete
return self.db.query(sql)
def _update_status(self, optype):
if optype == 'transfer':
site_columns = 'ss.`name`, sd.`name`'
site_joins = ' INNER JOIN `sites` AS ss ON ss.`id` = q.`source_id`'
site_joins += ' INNER JOIN `sites` AS sd ON sd.`id` = u.`site_id`'
else:
site_columns = 's.`name`'
site_joins = ' INNER JOIN `sites` AS s ON s.`id` = u.`site_id`'
get_task_data = 'SELECT u.`id`, f.`name`, f.`size`, UNIX_TIMESTAMP(q.`created`), ' + site_columns + ' FROM `{op}_tasks` AS q'
get_task_data += ' INNER JOIN `file_subscriptions` AS u ON u.`id` = q.`subscription_id`'
get_task_data += ' INNER JOIN `files` AS f ON f.`id` = u.`file_id`'
get_task_data += site_joins
get_task_data += ' WHERE q.`id` = %s'
get_task_data = get_task_data.format(op = optype)
if optype == 'transfer':
history_table_name = 'file_transfers'
history_site_fields = ('source_id', 'destination_id')
else:
history_table_name = 'file_deletions'
history_site_fields = ('site_id',)
history_fields = ('file_id', 'exitcode', 'message', 'batch_id', 'created', 'started', 'finished', 'completed') + history_site_fields
if optype == 'transfer':
insert_failure = 'INSERT INTO `failed_transfers` (`id`, `subscription_id`, `source_id`, `exitcode`)'
insert_failure += ' SELECT `id`, `subscription_id`, `source_id`, %s FROM `transfer_tasks` WHERE `id` = %s'
insert_failure += ' ON DUPLICATE KEY UPDATE `id`=VALUES(`id`)'
delete_failures = 'DELETE FROM `failed_transfers` WHERE `subscription_id` = %s'
get_subscription_status = 'SELECT `status` FROM `file_subscriptions` WHERE `id` = %s'
update_subscription = 'UPDATE `file_subscriptions` SET `status` = %s, `last_update` = NOW() WHERE `id` = %s'
delete_subscription = 'DELETE FROM `file_subscriptions` WHERE `id` = %s'
delete_task = 'DELETE FROM `{op}_tasks` WHERE `id` = %s'.format(op = optype)
delete_batch = 'DELETE FROM `{op}_batches` WHERE `id` = %s'.format(op = optype)
done_subscriptions = []
num_success = 0
num_failure = 0
num_cancelled = 0
# Collect completed tasks
for batch_id in self.db.query('SELECT `id` FROM `{op}_batches`'.format(op = optype)):
results = []
if optype == 'transfer':
for _, query in self.transfer_queries:
results = query.get_transfer_status(batch_id)
if len(results) != 0:
break
else:
for _, query in self.deletion_queries:
results = query.get_deletion_status(batch_id)
if len(results) != 0:
break
batch_complete = True
for task_id, status, exitcode, message, start_time, finish_time in results:
# start_time and finish_time can be None
LOG.debug('%s result: %d %s %d %s %s', optype, task_id, FileQuery.status_name(status), exitcode, start_time, finish_time)
if status == FileQuery.STAT_DONE:
num_success += 1
elif status == FileQuery.STAT_FAILED:
num_failure += 1
elif status == FileQuery.STAT_CANCELLED:
num_cancelled += 1
else:
batch_complete = False
continue
try:
task_data = self.db.query(get_task_data, task_id)[0]
except IndexError:
LOG.warning('%s task %d got lost.', optype, task_id)
if optype == 'transfer':
query.forget_transfer_status(task_id)
else:
query.forget_deletion_status(task_id)
if not self._read_only:
self.db.query(delete_task, task_id)
continue
subscription_id, lfn, size, create_time = task_data[:4]
if optype == 'transfer':
source_name, dest_name = task_data[4:]
history_site_ids = (
self.history_db.save_sites([source_name], get_ids = True)[0],
self.history_db.save_sites([dest_name], get_ids = True)[0]
)
else:
site_name = task_data[4]
history_site_ids = (self.history_db.save_sites([site_name], get_ids = True)[0],)
file_id = self.history_db.save_files([(lfn, size)], get_ids = True)[0]
if start_time is None:
sql_start_time = None
else:
sql_start_time = datetime.datetime(*time.localtime(start_time)[:6])
if finish_time is None:
sql_finish_time = None
else:
sql_finish_time = datetime.datetime(*time.localtime(finish_time)[:6])
values = (file_id, exitcode, message, batch_id, datetime.datetime(*time.localtime(create_time)[:6]),
sql_start_time, sql_finish_time, MySQL.bare('NOW()')) + history_site_ids
if optype == 'transfer':
LOG.debug('Archiving transfer of %s from %s to %s (exitcode %d)', lfn, source_name, dest_name, exitcode)
else:
LOG.debug('Archiving deletion of %s at %s (exitcode %d)', lfn, site_name, exitcode)
if self._read_only:
history_id = 0
else:
history_id = self.history_db.db.insert_get_id(history_table_name, history_fields, values)
if optype == 'transfer':
query.write_transfer_history(self.history_db, task_id, history_id)
else:
query.write_deletion_history(self.history_db, task_id, history_id)
# We check the subscription status and update accordingly. Need to lock the tables.
if not self._read_only:
self.db.lock_tables(write = ['file_subscriptions'])
try:
subscription_status = self.db.query(get_subscription_status, subscription_id)[0]
if subscription_status == 'inbatch':
if status == FileQuery.STAT_DONE:
LOG.debug('Subscription %d done.', subscription_id)
if not self._read_only:
self.db.query(update_subscription, 'done', subscription_id)
elif status == FileQuery.STAT_FAILED:
LOG.debug('Subscription %d failed (exit code %d). Flagging retry.', subscription_id, exitcode)
if not self._read_only:
self.db.query(update_subscription, 'retry', subscription_id)
elif subscription_status == 'cancelled':
# subscription is cancelled and task terminated -> delete the subscription now, irrespective of the task status
LOG.debug('Subscription %d is cancelled.', subscription_id)
if not self._read_only:
self.db.query(delete_subscription, subscription_id)
finally:
if not self._read_only:
self.db.unlock_tables()
if not self._read_only:
if optype == 'transfer':
if subscription_status == 'cancelled' or (subscription_status == 'inbatch' and status == FileQuery.STAT_DONE):
# Delete entries from failed_transfers table
self.db.query(delete_failures, subscription_id)
elif subscription_status == 'inbatch' and status == FileQuery.STAT_FAILED:
# Insert entry to failed_transfers table
self.db.query(insert_failure, exitcode, task_id)
self.db.query(delete_task, task_id)
if status == FileQuery.STAT_DONE:
done_subscriptions.append(subscription_id)
if optype == 'transfer':
query.forget_transfer_status(task_id)
else:
query.forget_deletion_status(task_id)
if self.cycle_stop.is_set():
break
if batch_complete:
if not self._read_only:
self.db.query(delete_batch, batch_id)
if optype == 'transfer':
query.forget_transfer_batch(batch_id)
else:
query.forget_deletion_batch(batch_id)
if num_success + num_failure + num_cancelled != 0:
LOG.info('Archived file %s: %d succeeded, %d failed, %d cancelled.', optype, num_success, num_failure, num_cancelled)
else:
LOG.debug('Archived file %s: %d succeeded, %d failed, %d cancelled.', optype, num_success, num_failure, num_cancelled)
return done_subscriptions
def _select_source(self, subscriptions):
"""
Intelligently select the best source for each subscription.
@param subscriptions List of Subscription objects
@return List of TransferTask objects
"""
def find_site_to_try(sources, failed_sources):
not_tried = set(sources)
if failed_sources is not None:
not_tried -= set(failed_sources.iterkeys())
LOG.debug('%d sites not tried', len(not_tried))
if len(not_tried) == 0:
if failed_sources is None:
return None
# we've tried all sites. Did any of them fail with a recoverable error?
sites_to_retry = []
for site, codes in failed_sources.iteritems():
if site not in sources:
continue
if codes[-1] not in irrecoverable_errors:
sites_to_retry.append(site)
if len(sites_to_retry) == 0:
return None
else:
# select the least failed site
by_failure = sorted(sites_to_retry, key = lambda s: len(failed_sources[s]))
LOG.debug('%s has the least failures', by_failure[0].name)
return by_failure[0]
else:
LOG.debug('Selecting randomly')
return random.choice(list(not_tried))
tasks = []
for subscription in subscriptions:
LOG.debug('Selecting a disk source for subscription %d (%s to %s)', subscription.id, subscription.file.lfn, subscription.destination.name)
source = find_site_to_try(subscription.disk_sources, subscription.failed_sources)
if source is None:
LOG.debug('Selecting a tape source for subscription %d', subscription.id)
source = find_site_to_try(subscription.tape_sources, subscription.failed_sources)
if source is None:
# If both disk and tape failed irrecoveably, the subscription must be placed in held queue in get_subscriptions.
# Reaching this line means something is wrong.
LOG.warning('Could not find a source for transfer of %s to %s from %d disk and %d tape candidates.',
subscription.file.lfn, subscription.destination.name, len(subscription.disk_sources), len(subscription.tape_sources))
continue
tasks.append(RLFSM.TransferTask(subscription, source))
return tasks
def _start_transfers(self, transfer_operation, tasks):
# start the transfer of tasks. If batch submission fails, make progressively smaller batches until failing tasks are identified.
if self._read_only:
batch_id = 0
else:
self.db.query('INSERT INTO `transfer_batches` (`id`) VALUES (0)')
batch_id = self.db.last_insert_id
LOG.debug('New transfer batch %d for %d files.', batch_id, len(tasks))
# local time
now = time.strftime('%Y-%m-%d %H:%M:%S')
# need to create the transfer tasks first to have ids assigned
fields = ('subscription_id', 'source_id', 'batch_id', 'created')
mapping = lambda t: (t.subscription.id, t.source.id, batch_id, now)
if not self._read_only:
self.db.insert_many('transfer_tasks', fields, mapping, tasks)
# set the task ids
tasks_by_sub = dict((t.subscription.id, t) for t in tasks)
for task_id, subscription_id in self.db.xquery('SELECT `id`, `subscription_id` FROM `transfer_tasks` WHERE `batch_id` = %s', batch_id):
tasks_by_sub[subscription_id].id = task_id
result = transfer_operation.start_transfers(batch_id, tasks)
successful = [task for task, success in result.iteritems() if success]
if not self._read_only:
self.db.execute_many('UPDATE `file_subscriptions` SET `status` = \'inbatch\', `last_update` = NOW()', 'id', [t.subscription.id for t in successful])
if len(successful) != len(result):
failed = [task for task, success in result.iteritems() if not success]
for task in failed:
LOG.error('Cannot issue transfer of %s from %s to %s',
task.subscription.file.lfn, task.source.name, task.subscription.destination.name)
failed_ids = [t.id for t in failed]
sql = 'INSERT INTO `failed_transfers` (`id`, `subscription_id`, `source_id`, `exitcode`)'
sql += ' SELECT `id`, `subscription_id`, `source_id`, -1 FROM `transfer_tasks`'
self.db.execute_many(sql, 'id', failed_ids)
self.db.delete_many('transfer_tasks', 'id', failed_ids)
self.db.execute_many('UPDATE `file_subscriptions` SET `status` = \'retry\', `last_update` = NOW()', 'id', [t.subscription.id for t in failed])
return len(successful), len(result) - len(successful)
def _start_deletions(self, deletion_operation, tasks):
if self._read_only:
batch_id = 0
else:
self.db.query('INSERT INTO `deletion_batches` (`id`) VALUES (0)')
batch_id = self.db.last_insert_id
# local time
now = time.strftime('%Y-%m-%d %H:%M:%S')
fields = ('subscription_id', 'batch_id', 'created')
mapping = lambda t: (t.desubscription.id, batch_id, now)
if not self._read_only:
self.db.insert_many('deletion_tasks', fields, mapping, tasks)
# set the task ids
tasks_by_sub = dict((t.desubscription.id, t) for t in tasks)
for task_id, desubscription_id in self.db.xquery('SELECT `id`, `subscription_id` FROM `deletion_tasks` WHERE `batch_id` = %s', batch_id):
tasks_by_sub[desubscription_id].id = task_id
result = deletion_operation.start_deletions(batch_id, tasks)
successful = [task for task, success in result.iteritems() if success]
if not self._read_only:
self.db.execute_many('UPDATE `file_subscriptions` SET `status` = \'inbatch\', `last_update` = NOW()', 'id', [t.desubscription.id for t in successful])
if len(successful) != len(result):
failed = [task for task, success in result.iteritems() if not success]
for task in failed:
LOG.error('Cannot delete %s at %s',
task.desubscription.file.lfn, task.desubscription.site.name)
self.db.delete_many('deletion_tasks', 'id', [t.id for t in failed])
self.db.execute_many('UPDATE `file_subscriptions` SET `status` = \'held\', `last_update` = NOW()', 'id', [t.desubscription.id for t in failed])
return len(successful), len(result) - len(successful)
def _set_dirclean_candidates(self, subscription_ids, inventory):
site_dirs = {}
# Clean up directories of completed subscriptions
sql = 'SELECT s.`name`, f.`name` FROM `file_subscriptions` AS u'
sql += ' INNER JOIN `files` AS f ON f.`id` = u.`file_id`'
sql += ' INNER JOIN `sites` AS s ON s.`id` = u.`site_id`'
for site_name, file_name in self.db.execute_many(sql, 'u.`id`', subscription_ids):
try:
site = inventory.sites[site_name]
except KeyError:
continue
try:
dirs = site_dirs[site]
except KeyError:
dirs = site_dirs[site] = set()
dirs.add(os.path.dirname(file_name))
def get_entry():
for site, dirs in site_dirs.iteritems():
for directory in dirs:
yield site.id, directory
fields = ('site_id', 'directory')
if not self._read_only:
self.db.insert_many('directory_cleaning_tasks', fields, None, get_entry(), do_update = True)
class MySQLInventoryStore(InventoryStore):
"""InventoryStore with a MySQL backend."""
def __init__(self, config):
InventoryStore.__init__(self, config)
self._mysql = MySQL(config.db_params)
def get_partition_names(self):
return self._mysql.query('SELECT `name` FROM `partitions`')
def get_group_names(self, include=['*'], exclude=[]): #override
# Load groups
group_names = []
names = self._mysql.xquery('SELECT `name` FROM `groups`')
for name in names:
for filt in include:
if fnmatch.fnmatch(name, filt):
break
else:
# no match
continue
for filt in exclude:
if fnmatch.fnmatch(name, filt):
break
else:
# no match
group_names.append(name)
return group_names
def get_site_names(self, include=['*'], exclude=[]): #override
# Load sites
site_names = []
names = self._mysql.xquery('SELECT `name` FROM `sites`')
for name in names:
for filt in include:
if fnmatch.fnmatch(name, filt):
break
else:
# no match
continue
for filt in exclude:
if fnmatch.fnmatch(name, filt):
break
else:
# no match
site_names.append(name)
return site_names
def get_dataset_names(self, include=['*'], exclude=[]): #override
dataset_names = []
include_patterns = []
for pattern in include:
sql = 'SELECT `name` FROM `datasets` WHERE `name` LIKE %s'
names = self._mysql.xquery(
sql,
pattern.replace('*', '%').replace('?', '_'))
for name in names:
for filt in exclude:
if fnmatch.fnmatch(name, filt):
break
else:
# no match
dataset_names.append(name)
return dataset_names
def get_files(self, block):
if LOG.getEffectiveLevel() == logging.DEBUG:
LOG.debug('Loading files for block %s', block.full_name())
files = set()
# assuming unique block names
sql = 'SELECT f.`size`, f.`name` FROM `files` AS f'
sql += ' INNER JOIN `blocks` AS b ON b.`id` = f.`block_id`'
sql += ' WHERE b.`name` = %s'
for size, name in self._mysql.xquery(sql, block.real_name()):
files.add(File(name, block, size))
return files
def load_data(self,
inventory,
group_names=None,
site_names=None,
dataset_names=None): #override
## Load groups
LOG.info('Loading groups.')
# name constraints communicated between _load_* functions via load_tmp tables
if self._mysql.table_exists('groups_load_tmp'):
self._mysql.query('DROP TABLE `groups_load_tmp`')
id_group_map = {0: inventory.groups[None]}
self._load_groups(inventory, group_names, id_group_map)
LOG.info('Loaded %d groups.', len(inventory.groups))
## Load sites
LOG.info('Loading sites.')
if self._mysql.table_exists('sites_load_tmp'):
self._mysql.query('DROP TABLE `sites_load_tmp`')
id_site_map = {}
self._load_sites(inventory, site_names, id_site_map)
LOG.info('Loaded %d sites.', len(inventory.sites))
## Load datasets
LOG.info('Loading datasets.')
start = time.time()
if self._mysql.table_exists('datasets_load_tmp'):
self._mysql.query('DROP TABLE `datasets_load_tmp`')
id_dataset_map = {}
self._load_datasets(inventory, dataset_names, id_dataset_map)
LOG.info('Loaded %d datasets in %.1f seconds.',
len(inventory.datasets),
time.time() - start)
## Load blocks
LOG.info('Loading blocks.')
start = time.time()
id_block_maps = {} # {dataset_id: {block_id: block}}
self._load_blocks(inventory, id_dataset_map, id_block_maps)
num_blocks = sum(len(m) for m in id_block_maps.itervalues())
LOG.info('Loaded %d blocks in %.1f seconds.', num_blocks,
time.time() - start)
## Load replicas (dataset and block in one go)
LOG.info('Loading replicas.')
start = time.time()
self._load_replicas(inventory, id_group_map, id_site_map,
id_dataset_map, id_block_maps)
num_dataset_replicas = 0
num_block_replicas = 0
for dataset in id_dataset_map.itervalues():
num_dataset_replicas += len(dataset.replicas)
num_block_replicas += sum(
len(r.block_replicas) for r in dataset.replicas)
LOG.info(
'Loaded %d dataset replicas and %d block replicas in %.1f seconds.',
num_dataset_replicas, num_block_replicas,
time.time() - start)
## cleanup
if self._mysql.table_exists('blocks_load_tmp'):
self._mysql.query('DROP TABLE `blocks_load_tmp`')
if self._mysql.table_exists('sites_load_tmp'):
self._mysql.query('DROP TABLE `sites_load_tmp`')
if self._mysql.table_exists('datasets_load_tmp'):
self._mysql.query('DROP TABLE `datasets_load_tmp`')
def _load_groups(self, inventory, group_names, id_group_map):
sql = 'SELECT g.`id`, g.`name`, g.`olevel` FROM `groups` AS g'
if group_names is not None:
# first dump the group ids into a temporary table, then constrain the original table
self._mysql.query(
'CREATE TABLE `groups_load_tmp` (`id` int(11) unsigned NOT NULL, PRIMARY KEY (`id`))'
)
sqlbase = 'INSERT INTO `groups_load_tmp` SELECT `id` FROM `groups`'
self._mysql.execute_many(sqlbase, 'name', group_names)
sql += ' INNER JOIN `groups_load_tmp` AS t ON t.`id` = g.`id`'
for group_id, name, olname in self._mysql.xquery(sql):
if olname == 'Dataset':
olevel = Dataset
else:
olevel = Block
group = Group(name, olevel)
inventory.groups[name] = group
id_group_map[group_id] = group
def _load_sites(self, inventory, site_names, id_site_map):
sql = 'SELECT s.`id`, s.`name`, s.`host`, s.`storage_type`+0, s.`backend`, s.`storage`, s.`cpu`, `status`+0 FROM `sites` AS s'
if site_names is not None:
# first dump the site ids into a temporary table, then constrain the original table
self._mysql.query(
'CREATE TABLE `sites_load_tmp` (`id` int(11) unsigned NOT NULL, PRIMARY KEY (`id`))'
)
sqlbase = 'INSERT INTO `sites_load_tmp` SELECT `id` FROM `sites`'
self._mysql.execute_many(sqlbase, 'name', site_names)
sql += ' INNER JOIN `sites_load_tmp` AS t ON t.`id` = s.`id`'
for site_id, name, host, storage_type, backend, storage, cpu, status in self._mysql.xquery(
sql):
site = Site(name,
host=host,
storage_type=storage_type,
backend=backend,
storage=storage,
cpu=cpu,
status=status)
inventory.sites[name] = site
id_site_map[site_id] = site
for partition in inventory.partitions.itervalues():
site.partitions[partition] = SitePartition(site, partition)
# Load site quotas
sql = 'SELECT q.`site_id`, p.`name`, q.`storage` FROM `quotas` AS q INNER JOIN `partitions` AS p ON p.`id` = q.`partition_id`'
if site_names is not None:
sql += ' INNER JOIN `sites_load_tmp` AS t ON t.`id` = q.`site_id`'
for site_id, partition_name, storage in self._mysql.xquery(sql):
try:
site = id_site_map[site_id]
except KeyError:
continue
partition = inventory.partitions[partition_name]
site.partitions[partition].set_quota(storage * 1.e+12)
def _load_datasets(self, inventory, dataset_names, id_dataset_map):
sql = 'SELECT d.`id`, d.`name`, d.`size`, d.`num_files`, d.`status`+0, d.`data_type`+0, s.`cycle`, s.`major`, s.`minor`, s.`suffix`, UNIX_TIMESTAMP(d.`last_update`), d.`is_open`'
sql += ' FROM `datasets` AS d'
sql += ' LEFT JOIN `software_versions` AS s ON s.`id` = d.`software_version_id`'
if dataset_names is not None:
# first dump the dataset ids into a temporary table, then constrain the original table
self._mysql.query(
'CREATE TABLE `datasets_load_tmp` (`id` int(11) unsigned NOT NULL, PRIMARY KEY (`id`))'
)
sqlbase = 'INSERT INTO `datasets_load_tmp` SELECT `id` FROM `datasets`'
self._mysql.execute_many(sqlbase, 'name', dataset_names)
sql += ' INNER JOIN `datasets_load_tmp` AS t ON t.`id` = d.`id`'
for dataset_id, name, size, num_files, status, data_type, sw_cycle, sw_major, sw_minor, sw_suffix, last_update, is_open in self._mysql.xquery(
sql):
# size and num_files are reset when loading blocks
dataset = Dataset(name,
size=size,
num_files=num_files,
status=int(status),
data_type=int(data_type),
last_update=last_update,
is_open=(is_open == 1))
if sw_cycle is None:
dataset.software_version = None
else:
dataset.software_version = (sw_cycle, sw_major, sw_minor,
sw_suffix)
inventory.datasets[name] = dataset
id_dataset_map[dataset_id] = dataset
def _load_blocks(self, inventory, id_dataset_map, id_block_maps):
sql = 'SELECT b.`id`, b.`dataset_id`, b.`name`, b.`size`, b.`num_files`, b.`is_open`, UNIX_TIMESTAMP(b.`last_update`) FROM `blocks` AS b'
if self._mysql.table_exists('datasets_load_tmp'):
sql += ' INNER JOIN `datasets_load_tmp` AS t ON t.`id` = b.`dataset_id`'
sql += ' ORDER BY b.`dataset_id`'
_dataset_id = 0
dataset = None
for block_id, dataset_id, name, size, num_files, is_open, last_update in self._mysql.xquery(
sql):
if dataset_id != _dataset_id:
_dataset_id = dataset_id
dataset = id_dataset_map[dataset_id]
dataset.blocks.clear()
dataset.size = 0
dataset.num_files = 0
id_block_map = id_block_maps[dataset_id] = {}
block = Block(Block.to_internal_name(name), dataset, size,
num_files, (is_open == 1), last_update)
dataset.blocks.add(block)
dataset.size += block.size
dataset.num_files += block.num_files
id_block_map[block_id] = block
def _load_replicas(self, inventory, id_group_map, id_site_map,
id_dataset_map, id_block_maps):
sql = 'SELECT dr.`dataset_id`, dr.`site_id`,'
sql += ' br.`block_id`, br.`group_id`, br.`is_complete`, br.`is_custodial`, brs.`size`, UNIX_TIMESTAMP(br.`last_update`)'
sql += ' FROM `dataset_replicas` AS dr'
sql += ' INNER JOIN `blocks` AS b ON b.`dataset_id` = dr.`dataset_id`'
sql += ' LEFT JOIN `block_replicas` AS br ON (br.`block_id`, br.`site_id`) = (b.`id`, dr.`site_id`)'
sql += ' LEFT JOIN `block_replica_sizes` AS brs ON (brs.`block_id`, brs.`site_id`) = (b.`id`, dr.`site_id`)'
if self._mysql.table_exists('groups_load_tmp'):
sql += ' INNER JOIN `groups_load_tmp` AS gt ON gt.`id` = br.`group_id`'
if self._mysql.table_exists('sites_load_tmp'):
sql += ' INNER JOIN `sites_load_tmp` AS st ON st.`id` = dr.`site_id`'
if self._mysql.table_exists('datasets_load_tmp'):
sql += ' INNER JOIN `datasets_load_tmp` AS dt ON dt.`id` = dr.`dataset_id`'
sql += ' ORDER BY dr.`dataset_id`, dr.`site_id`'
# Blocks are left joined -> there will be (# sites) x (# blocks) entries per dataset
_dataset_id = 0
_site_id = 0
dataset_replica = None
for dataset_id, site_id, block_id, group_id, is_complete, b_is_custodial, b_size, b_last_update in self._mysql.xquery(
sql):
if dataset_id != _dataset_id:
_dataset_id = dataset_id
dataset = id_dataset_map[_dataset_id]
dataset.replicas.clear()
id_block_map = id_block_maps[dataset_id]
if site_id != _site_id:
_site_id = site_id
site = id_site_map[site_id]
if dataset_replica is None or dataset is not dataset_replica.dataset or site is not dataset_replica.site:
if dataset_replica is not None:
# this is the last dataset_replica
# add to dataset and site after filling all block replicas
# this does not matter for the dataset, but for the site there is some heavy
# computation needed when a replica is added
dataset_replica.dataset.replicas.add(dataset_replica)
dataset_replica.site.add_dataset_replica(
dataset_replica, add_block_replicas=True)
dataset_replica = DatasetReplica(dataset, site)
if block_id is None:
# this block replica does not exist
continue
block = id_block_map[block_id]
group = id_group_map[group_id]
block_replica = BlockReplica(
block,
site,
group=group,
is_complete=(is_complete == 1),
is_custodial=(b_is_custodial == 1),
size=block.size if b_size is None else b_size,
last_update=b_last_update)
dataset_replica.block_replicas.add(block_replica)
block.replicas.add(block_replica)
if dataset_replica is not None:
# one last bit
dataset_replica.dataset.replicas.add(dataset_replica)
dataset_replica.site.add_dataset_replica(dataset_replica,
add_block_replicas=True)
def save_block(self, block): #override
dataset_id = self._get_dataset_id(block.dataset)
if dataset_id == 0:
return
fields = ('dataset_id', 'name', 'size', 'num_files', 'is_open',
'last_update')
self._insert_update(
'blocks', fields, dataset_id, block.real_name(), block.size,
block.num_files, block.is_open,
time.strftime('%Y-%m-%d %H:%M:%S',
time.localtime(block.last_update)))
def delete_block(self, block): #override
# Here we don't assume block name is unique..
dataset_id = self._get_dataset_id(block.dataset)
if dataset_id == 0:
return
sql = 'DELETE FROM `blocks` WHERE `dataset_id` = %s AND `name` = %s'
self._mysql.query(sql, dataset_id, block.real_name())
def save_file(self, lfile): #override
dataset_id = self._get_dataset_id(lfile.block.dataset)
if dataset_id == 0:
return
block_id = self._get_block_id(lfile.block)
if block_id == 0:
return
fields = ('block_id', 'dataset_id', 'size', 'name')
self._insert_update('files', fields, block_id, dataset_id, lfile.size,
lfile.lfn)
def delete_file(self, lfile): #override
sql = 'DELETE FROM `files` WHERE `name` = %s'
self._mysql.query(sql, lfile.lfn)
def save_blockreplica(self, block_replica): #override
block_id = self._get_block_id(block_replica.block)
if block_id == 0:
return
site_id = self._get_site_id(block_replica.site)
if site_id == 0:
return
group_id = self._get_group_id(block_replica.group)
if group_id == 0:
return
fields = ('block_id', 'site_id', 'group_id', 'is_complete',
'is_custodial', 'last_update')
self._insert_update(
'block_replicas', fields, block_id, site_id, group_id,
block_replica.is_complete, block_replica.is_custodial,
time.strftime('%Y-%m-%d %H:%M:%S',
time.localtime(block_replica.last_update)))
if block_replica.size != block_replica.block.size:
fields = ('block_id', 'site_id', 'size')
self._insert_update('block_replica_sizes', fields, block_id,
site_id, block_replica.size)
else:
sql = 'DELETE FROM `block_replica_sizes` WHERE `block_id` = %s AND `site_id` = %s'
self._mysql.query(sql, block_id, site_id)
def delete_blockreplica(self, block_replica): #override
block_id = self._get_block_id(block_replica.block)
if block_id == 0:
return
site_id = self._get_site_id(block_replica.site)
if site_id == 0:
return
sql = 'DELETE FROM `block_replicas` WHERE `block_id` = %s AND `site_id` = %s'
self._mysql.query(sql, block_id, site_id)
sql = 'DELETE FROM `block_replica_sizes` WHERE `block_id` = %s AND `site_id` = %s'
self._mysql.query(sql, block_id, site_id)
def save_dataset(self, dataset): #override
if dataset.software_version is None:
software_version_id = 0
else:
sql = 'SELECT `id` FROM `software_versions` WHERE (`cycle`, `major`, `minor`, `suffix`) = (%s, %s, %s, %s)'
result = self._mysql.query(sql, *dataset.software_version)
if len(result) == 0:
sql = 'INSERT INTO `software_versions` (`cycle`, `major`, `minor`, `suffix`) VALUES (%s, %s, %s, %s)'
software_version_id = self._mysql.query(
sql, *dataset.software_version)
else:
software_version_id = result[0]
fields = ('name', 'size', 'num_files', 'status', 'data_type',
'software_version_id', 'last_update', 'is_open')
self._insert_update('datasets', fields, dataset.name, dataset.size, dataset.num_files, \
dataset.status, dataset.data_type, software_version_id,
time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(dataset.last_update)), dataset.is_open)
def delete_dataset(self, dataset): #override
sql = 'DELETE FROM `datasets` WHERE `name` = %s'
self._mysql.query(sql, dataset.name)
def save_datasetreplica(self, dataset_replica): #override
dataset_id = self._get_dataset_id(dataset_replica.dataset)
if dataset_id == 0:
return
site_id = self._get_site_id(dataset_replica.site)
if site_id == 0:
return
fields = ('dataset_id', 'site_id')
self._insert_update('dataset_replicas', fields, dataset_id, site_id)
def delete_datasetreplica(self, dataset_replica): #override
dataset_id = self._get_dataset_id(dataset_replica.dataset)
if dataset_id == 0:
return
site_id = self._get_site_id(dataset_replica.site)
if site_id == 0:
return
sql = 'DELETE FROM `dataset_replicas` WHERE `dataset_id` = %s AND `site_id` = %s'
self._mysql.query(sql, dataset_id, site_id)
def save_group(self, group): #override
fields = ('name', 'olevel')
self._insert_update('groups', fields, group.name,
group.olevel.__name__)
def delete_group(self, group): #override
sql = 'DELETE FROM `groups` WHERE `name` = %s'
self._mysql.query(sql, group.name)
def save_partition(self, partition): #override
fields = ('name', )
self._insert_update('partitions', fields, partition.name)
def delete_partition(self, partition): #override
sql = 'DELETE FROM `partitions` WHERE `name` = %s'
self._mysql.query(sql, partition.name)
def save_site(self, site): #override
fields = ('name', 'host', 'storage_type', 'backend', 'storage', 'cpu',
'status')
self._insert_update('sites', fields, site.name, site.host,
site.storage_type, site.backend, site.storage,
site.cpu, site.status)
def delete_site(self, site): #override
sql = 'DELETE FROM `sites` WHERE `name` = %s'
self._mysql.query(sql, site.name)
def save_sitepartition(self, site_partition): #override
# We are only saving quotas. For superpartitions, there is nothing to do.
if site_partition.partition.subpartitions is not None:
return
site_id = self._get_site_id(site_partition.site)
if site_id == 0:
return
partition_id = self._get_partition_id(site_partition.partition)
if partition_id == 0:
return
fields = ('site_id', 'partition_id', 'storage')
self._insert_update('quotas', fields, site_id, partition_id,
site_partition.quota * 1.e-12)
def delete_sitepartition(self, site_partition): #override
# We are only saving quotas. For superpartitions, there is nothing to do.
if site_partition.partition.subpartitions is not None:
return
site_id = self._get_site_id(site_partition.site)
if site_id == 0:
return
partition_id = self._get_partition_id(site_partition.partition)
if partition_id == 0:
return
sql = 'DELETE FROM `quotas` WHERE `site_id` = %s AND `partition_id` = %s'
self._mysql.query(sql, site_id, partition_id)
def _insert_update(self, table, fields, *values):
placeholders = ', '.join(['%s'] * len(fields))
sql = 'INSERT INTO `%s` (' % table
sql += ', '.join('`%s`' % f for f in fields)
sql += ') VALUES (' + placeholders + ')'
sql += ' ON DUPLICATE KEY UPDATE '
sql += ', '.join(['`%s`=VALUES(`%s`)' % (f, f) for f in fields])
self._mysql.query(sql, *values)
def _get_dataset_id(self, dataset):
sql = 'SELECT `id` FROM `datasets` WHERE `name` = %s'
result = self._mysql.query(sql, dataset.name)
if len(result) == 0:
# should I raise?
return 0
return result[0]
def _get_block_id(self, block):
sql = 'SELECT b.`id` FROM `blocks` AS b'
sql += ' INNER JOIN `datasets` AS d ON d.`id` = b.`dataset_id`'
sql += ' WHERE d.`name` = %s AND b.`name` = %s'
result = self._mysql.query(sql, block.dataset.name, block.real_name())
if len(result) == 0:
return 0
return result[0]
def _get_site_id(self, site):
sql = 'SELECT `id` FROM `sites` WHERE `name` = %s'
result = self._mysql.query(sql, site.name)
if len(result) == 0:
return 0
return result[0]
def _get_group_id(self, group):
if group.name is None:
return 0
sql = 'SELECT `id` FROM `groups` WHERE `name` = %s'
result = self._mysql.query(sql, group.name)
if len(result) == 0:
return 0
return result[0]
def _get_partition_id(self, partition):
sql = 'SELECT `id` FROM `partitions` WHERE `name` = %s'
result = self._mysql.query(sql, partition.name)
if len(result) == 0:
return 0
return result[0]
