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 HistoryDatabase(object): """ Interface to the history database. This is a MySQL-specific implementation, and we actually expose the backend database.. Will be a bit tricky to replace the backend when we need to do it. What we do with the history DB is very much application specific, so it makes little sense to have generic abstract interface to individual actions. The methods of this class are just a few of the common operations that are necessary for any history recording. """ # default configuration _config = Configuration() @staticmethod def set_default(config): HistoryDatabase._config = Configuration(config) def __init__(self, config=None): if config is None: config = HistoryDatabase._config self.db = MySQL(config.db_params) self.set_read_only(config.get('read_only', False)) def set_read_only(self, value=True): self._read_only = value def save_users(self, user_list, get_ids=False): """ @param user_list [(name, dn)] """ if self._read_only: if get_ids: return [0] * len(user_list) else: return self.db.insert_many('users', ('name', 'dn'), None, user_list, do_update=True) if get_ids: return self.db.select_many('users', ('id', ), 'dn', [u[1] for u in user_list]) def save_user_services(self, service_names, get_ids=False): if self._read_only: if get_ids: return [0] * len(service_names) else: return self.db.insert_many('user_services', ('name', ), MySQL.make_tuple, service_names, do_update=True) if get_ids: return self.db.select_many('user_services', ('id', ), 'name', service_names) def save_partitions(self, partition_names, get_ids=False): if self._read_only: if get_ids: return [0] * len(partition_names) else: return self.db.insert_many('partitions', ('name', ), MySQL.make_tuple, partition_names, do_update=True) if get_ids: return self.db.select_many('partitions', ('id', ), 'name', partition_names) def save_sites(self, site_names, get_ids=False): if self._read_only: if get_ids: return [0] * len(site_names) else: return self.db.insert_many('sites', ('name', ), MySQL.make_tuple, site_names, do_update=True) if get_ids: return self.db.select_many('sites', ('id', ), 'name', site_names) def save_groups(self, group_names, get_ids=False): if self._read_only: if get_ids: return [0] * len(group_names) else: return self.db.insert_many('groups', ('name', ), MySQL.make_tuple, group_names, do_update=True) if get_ids: return self.db.select_many('groups', ('id', ), 'name', group_names) def save_datasets(self, dataset_names, get_ids=False): if self._read_only: if get_ids: return [0] * len(dataset_names) else: return self.db.insert_many('datasets', ('name', ), MySQL.make_tuple, dataset_names, do_update=True) if get_ids: return self.db.select_many('datasets', ('id', ), 'name', dataset_names) def save_blocks(self, block_list, get_ids=False): """ @param block_list [(dataset name, block name)] """ if self._read_only: if get_ids: return [0] * len(block_list) else: return reuse_orig = self.db.reuse_connection self.db.reuse_connection = True datasets = set(b[0] for b in block_list) self.save_datasets(datasets) columns = [ '`dataset` varchar(512) CHARACTER SET latin1 COLLATE latin1_general_cs NOT NULL', '`block` varchar(128) CHARACTER SET latin1 COLLATE latin1_general_cs NOT NULL' ] self.db.create_tmp_table('blocks_tmp', columns) self.db.insert_many('blocks_tmp', ('dataset', 'block'), None, block_list, db=self.db.scratch_db) sql = 'INSERT INTO `blocks` (`dataset_id`, `name`)' sql += ' SELECT d.`id`, b.`block` FROM `{scratch}`.`blocks_tmp` AS b'.format( scratch=self.db.scratch_db) sql += ' INNER JOIN `datasets` AS d ON d.`name` = b.`dataset`' self.db.query(sql) if get_ids: sql = 'SELECT b.`id` FROM `blocks` AS b' sql += ' INNER JOIN (SELECT d.`id` dataset_id, t.`block` block_name FROM `{scratch}`.`blocks_tmp` AS t'.format( scratch=self.db.scratch_db) sql += ' INNER JOIN `datasets` AS d ON d.`name` = t.`dataset`) AS j ON (j.`dataset_id`, j.`block_name`) = (b.`dataset_id`, b.`name`)' ids = self.db.query(sql) self.db.drop_tmp_table('blocks_tmp') self.db.reuse_connection = reuse_orig if get_ids: return ids def save_files(self, file_data, get_ids=False): if self._read_only: if get_ids: return [0] * len(file_data) else: return self.db.insert_many('files', ('name', 'size'), None, file_data, do_update=True) if get_ids: return self.db.select_many('files', ('id', ), 'name', [f[0] for f in file_data])
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 MySQLReplicaLock(object): """ Dataset lock read from local DB. Sets one attr: locked_blocks: {site: set([blocks]) or None if dataset-level} """ produces = ['locked_blocks'] _default_config = None @staticmethod def set_default(config): MySQLReplicaLock._default_config = Configuration(config) def __init__(self, config = None): if config is None: if MySQLReplicaLock._default_config is None: raise ConfigurationError('MySQLReplicaLock default config is not set') config = MySQLReplicaLock._default_config self._mysql = MySQL(config.get('db_params', None)) self.users = [] for user_id, role_id in config.get('users', []): self.users.append((user_id, role_id)) def load(self, inventory): for dataset in inventory.datasets.itervalues(): try: dataset.attr.pop('locked_blocks') except KeyError: pass if len(self.users) != 0: entries = self._mysql.select_many('detox_locks', ('item', 'sites', 'groups'), ('user_id', 'role_id'), self.users) else: query = 'SELECT `item`, `sites`, `groups` FROM `detox_locks`' entries = self._mysql.query(query) for item_name, sites_pattern, groups_pattern in entries: # wildcard not allowed in block name try: dataset_pattern, block_name = Block.from_full_name(item_name) except ObjectError: dataset_pattern, block_name = item_name, None if '*' in dataset_pattern: pat_exp = re.compile(fnmatch.translate(dataset_pattern)) datasets = [] for dataset in inventory.datasets.values(): # this is highly inefficient but I can't think of a better way if pat_exp.match(dataset.name): datasets.append(dataset) else: try: dataset = inventory.datasets[dataset_pattern] except KeyError: LOG.debug('Cannot lock unknown dataset %s', dataset_pattern) continue datasets = [dataset] specified_sites = [] if sites_pattern: if sites_pattern == '*': pass elif '*' in sites_pattern: pat_exp = re.compile(fnmatch.translate(sites_pattern)) specified_sites.extend(s for n, s in inventory.sites.iteritems() if pat_exp.match(n)) else: try: specified_sites.append(inventory.sites[sites_pattern]) except KeyError: pass specified_groups = [] if groups_pattern: if groups_pattern == '*': pass elif '*' in groups_pattern: pat_exp = re.compile(fnmatch.translate(groups_pattern)) specified_groups.extend(g for n, g in inventory.groups.iteritems() if pat_exp.match(n)) else: try: specified_groups.append(inventory.groups[groups_pattern]) except KeyError: pass for dataset in datasets: sites = set(specified_sites) groups = set(specified_groups) if len(sites) == 0: # either sites_pattern was not given (global lock) or no sites matched (typo?) # we will treat this as a global lock sites.update(r.site for r in dataset.replicas) if len(groups) == 0: # if no group matches the pattern, we will be on the safe side and treat it as a global lock for replica in dataset.replicas: groups.update(brep.group for brep in replica.block_replicas) try: locked_blocks = dataset.attr['locked_blocks'] except KeyError: locked_blocks = dataset.attr['locked_blocks'] = {} if block_name is None: for replica in dataset.replicas: if replica.site not in sites: continue if replica.site not in locked_blocks: locked_blocks[replica.site] = set() for block_replica in replica.block_replicas: if block_replica.group not in groups: continue locked_blocks[replica.site].add(block_replica.block) else: block = dataset.find_block(block_name) if block is None: LOG.debug('Cannot lock unknown block %s', block_name) continue for replica in block.replicas: if replica.site not in sites: continue if replica.group not in groups: continue if replica.site not in locked_blocks: locked_blocks[replica.site] = set([block]) else: locked_blocks[replica.site].add(block) for dataset in inventory.datasets.itervalues(): try: locked_blocks = dataset.attr['locked_blocks'] except KeyError: continue for site, blocks in locked_blocks.items(): if blocks is None: continue # if all blocks are locked, set to None (dataset-level lock) if blocks == dataset.blocks: locked_blocks[site] = None LOG.info('Locked %d items.', len(entries))
class MySQLHistory(TransactionHistoryInterface): """ Transaction history interface implementation using MySQL as the backend. """ def __init__(self, config): TransactionHistoryInterface.__init__(self, config) self._mysql = MySQL(config.db_params) self._cache_db = MySQL(config.cache_db_params) self._site_id_map = {} self._dataset_id_map = {} def _do_acquire_lock(self, blocking): #override while True: # Use the system table to "software-lock" the database self._mysql.query('LOCK TABLES `lock` WRITE') self._mysql.query( 'UPDATE `lock` SET `lock_host` = %s, `lock_process` = %s WHERE `lock_host` LIKE \'\' AND `lock_process` = 0', socket.gethostname(), os.getpid()) # Did the update go through? host, pid = self._mysql.query( 'SELECT `lock_host`, `lock_process` FROM `lock`')[0] self._mysql.query('UNLOCK TABLES') if host == socket.gethostname() and pid == os.getpid(): # The database is locked. break if blocking: LOG.warning('Failed to lock database. Waiting 30 seconds..') time.sleep(30) else: LOG.warning('Failed to lock database.') return False return True def _do_release_lock(self, force): #override self._mysql.query('LOCK TABLES `lock` WRITE') if force: self._mysql.query( 'UPDATE `lock` SET `lock_host` = \'\', `lock_process` = 0') else: self._mysql.query( 'UPDATE `lock` SET `lock_host` = \'\', `lock_process` = 0 WHERE `lock_host` LIKE %s AND `lock_process` = %s', socket.gethostname(), os.getpid()) # Did the update go through? host, pid = self._mysql.query( 'SELECT `lock_host`, `lock_process` FROM `lock`')[0] self._mysql.query('UNLOCK TABLES') if host != '' or pid != 0: raise RuntimeError('Failed to release lock from ' + socket.gethostname() + ':' + str(os.getpid())) def _do_new_run(self, operation, partition, policy_version, comment): #override part_ids = self._mysql.query( 'SELECT `id` FROM `partitions` WHERE `name` LIKE %s', partition) if len(part_ids) == 0: part_id = self._mysql.query( 'INSERT INTO `partitions` (`name`) VALUES (%s)', partition) else: part_id = part_ids[0] if operation == HistoryRecord.OP_COPY: if self.config.get('test', False): operation_str = 'copy_test' else: operation_str = 'copy' else: if self.config.get('test', False): operation_str = 'deletion_test' else: operation_str = 'deletion' return self._mysql.query( 'INSERT INTO `runs` (`operation`, `partition_id`, `policy_version`, `comment`, `time_start`) VALUES (%s, %s, %s, %s, NOW())', operation_str, part_id, policy_version, comment) def _do_close_run(self, operation, run_number): #override self._mysql.query( 'UPDATE `runs` SET `time_end` = FROM_UNIXTIME(%s) WHERE `id` = %s', time.time(), run_number) def _do_make_copy_entry(self, run_number, site, operation_id, approved, dataset_list, size): #override """ Site and datasets are expected to be already in the database. """ if len(self._site_id_map) == 0: self._make_site_id_map() if len(self._dataset_id_map) == 0: self._make_dataset_id_map() self._mysql.query( 'INSERT INTO `copy_requests` (`id`, `run_id`, `timestamp`, `approved`, `site_id`, `size`) VALUES (%s, %s, NOW(), %s, %s, %s)', operation_id, run_number, approved, self._site_id_map[site.name], size) self._mysql.insert_many( 'copied_replicas', ('copy_id', 'dataset_id'), lambda d: (operation_id, self._dataset_id_map[d.name]), dataset_list) def _do_make_deletion_entry(self, run_number, site, operation_id, approved, datasets, size): #override """ site and dataset are expected to be already in the database (save_deletion_decisions should be called first). """ site_id = self._mysql.query( 'SELECT `id` FROM `sites` WHERE `name` LIKE %s', site.name)[0] dataset_ids = self._mysql.select_many('datasets', ('id', ), 'name', (d.name for d in datasets)) self._mysql.query( 'INSERT INTO `deletion_requests` (`id`, `run_id`, `timestamp`, `approved`, `site_id`, `size`) VALUES (%s, %s, NOW(), %s, %s, %s)', operation_id, run_number, approved, site_id, size) self._mysql.insert_many('deleted_replicas', ('deletion_id', 'dataset_id'), lambda did: (operation_id, did), dataset_ids) def _do_update_copy_entry(self, copy_record): #override self._mysql.query( 'UPDATE `copy_requests` SET `approved` = %s, `size` = %s, `completed` = %s WHERE `id` = %s', copy_record.approved, copy_record.size, copy_record.completed, copy_record.operation_id) def _do_update_deletion_entry(self, deletion_record): #override self._mysql.query( 'UPDATE `deletion_requests` SET `approved` = %s, `size` = %s WHERE `id` = %s', deletion_record.approved, deletion_record.size, deletion_record.operation_id) def _do_save_sites(self, sites): #override if len(self._site_id_map) == 0: self._make_site_id_map() names_to_sites = dict((s.name, s) for s in sites) sites_to_insert = [] for site_name in names_to_sites.iterkeys(): if site_name not in self._site_id_map: sites_to_insert.append(site_name) if len(sites_to_insert) != 0: self._mysql.insert_many('sites', ('name', ), None, sites_to_insert) self._make_site_id_map() def _do_get_sites(self, run_number): #override self._fill_snapshot_cache('sites', run_number) table_name = 'sites_%d' % run_number sql = 'SELECT s.`name`, n.`status`, n.`quota` FROM `%s`.`%s` AS n' % ( self._cache_db.db_name(), table_name) sql += ' INNER JOIN `%s`.`sites` AS s ON s.`id` = n.`site_id`' % self._mysql.db_name( ) sites_dict = {} for site_name, status, quota in self._mysql.xquery(sql): sites_dict[site_name] = (status, quota) return sites_dict def _do_save_datasets(self, datasets): #override if len(self._dataset_id_map) == 0: self._make_dataset_id_map() datasets_to_insert = set(d.name for d in datasets) - set( self._dataset_id_map.iterkeys()) if len(datasets_to_insert) == 0: return self._mysql.insert_many('datasets', ('name', ), None, datasets_to_insert) self._make_dataset_id_map() def _do_save_conditions(self, policy_lines): #ovrride for line in policy_lines: text = re.sub('\s+', ' ', line.condition.text) ids = self._mysql.query( 'SELECT `id` FROM `policy_conditions` WHERE `text` = %s', text) if len(ids) == 0: line.condition_id = self._mysql.query( 'INSERT INTO `policy_conditions` (`text`) VALUES (%s)', text) else: line.condition_id = ids[0] def _do_save_copy_decisions(self, run_number, copies): #override pass def _do_save_deletion_decisions(self, run_number, deleted_list, kept_list, protected_list): #override if len(self._site_id_map) == 0: self._make_site_id_map() if len(self._dataset_id_map) == 0: self._make_dataset_id_map() if type(run_number) is int: # Saving deletion decisions of a cycle db_file_name = '%s/snapshot_%09d.db' % ( self.config.snapshots_spool_dir, run_number) else: # run_number is actually the partition name db_file_name = '%s/snapshot_%s.db' % ( self.config.snapshots_spool_dir, run_number) try: os.makedirs(self.config.snapshots_spool_dir) os.chmod(self.config.snapshots_spool_dir, 0777) except OSError: pass if os.path.exists(db_file_name): os.unlink(db_file_name) LOG.info('Creating snapshot SQLite3 DB %s', db_file_name) # hardcoded!! replica_delete = 1 replica_keep = 2 replica_protect = 3 snapshot_db = sqlite3.connect(db_file_name) snapshot_cursor = snapshot_db.cursor() sql = 'CREATE TABLE `decisions` (' sql += '`id` TINYINT PRIMARY KEY NOT NULL,' sql += '`value` TEXT NOT NULL' sql += ')' snapshot_db.execute(sql) snapshot_db.execute('INSERT INTO `decisions` VALUES (%d, \'delete\')' % replica_delete) snapshot_db.execute('INSERT INTO `decisions` VALUES (%d, \'keep\')' % replica_keep) snapshot_db.execute( 'INSERT INTO `decisions` VALUES (%d, \'protect\')' % replica_protect) sql = 'CREATE TABLE `replicas` (' sql += '`site_id` SMALLINT NOT NULL,' sql += '`dataset_id` INT NOT NULL,' sql += '`size` BIGINT NOT NULL,' sql += '`decision_id` TINYINT NOT NULL REFERENCES `decisions`(`id`),' sql += '`condition` MEDIUMINT NOT NULL' sql += ')' snapshot_db.execute(sql) snapshot_db.execute( 'CREATE INDEX `site_dataset` ON `replicas` (`site_id`, `dataset_id`)' ) sql = 'INSERT INTO `replicas` VALUES (?, ?, ?, ?, ?)' def do_insert(entries, decision): for replica, matches in entries.iteritems(): site_id = self._site_id_map[replica.site.name] dataset_id = self._dataset_id_map[replica.dataset.name] for condition_id, block_replicas in matches.iteritems(): size = sum(r.size for r in block_replicas) snapshot_cursor.execute( sql, (site_id, dataset_id, size, decision, condition_id)) snapshot_db.commit() do_insert(deleted_list, replica_delete) do_insert(kept_list, replica_keep) do_insert(protected_list, replica_protect) snapshot_cursor.close() snapshot_db.close() os.chmod(db_file_name, 0666) self._fill_snapshot_cache('replicas', run_number, overwrite=True) def _do_save_quotas(self, run_number, quotas): #override # Will save quotas and statuses if len(self._site_id_map) == 0: self._make_site_id_map() if type(run_number) is int: db_file_name = '%s/snapshot_%09d.db' % ( self.config.snapshots_spool_dir, run_number) else: # run_number is actually the partition name db_file_name = '%s/snapshot_%s.db' % ( self.config.snapshots_spool_dir, run_number) # DB file should exist already - this function is called after save_deletion_decisions snapshot_db = sqlite3.connect(db_file_name) snapshot_cursor = snapshot_db.cursor() sql = 'CREATE TABLE `statuses` (' sql += '`id` TINYINT PRIMARY KEY NOT NULL,' sql += '`value` TEXT NOT NULL' sql += ')' snapshot_db.execute(sql) snapshot_db.execute('INSERT INTO `statuses` VALUES (%d, \'ready\')' % Site.STAT_READY) snapshot_db.execute( 'INSERT INTO `statuses` VALUES (%d, \'waitroom\')' % Site.STAT_WAITROOM) snapshot_db.execute('INSERT INTO `statuses` VALUES (%d, \'morgue\')' % Site.STAT_MORGUE) snapshot_db.execute('INSERT INTO `statuses` VALUES (%d, \'unknown\')' % Site.STAT_UNKNOWN) sql = 'CREATE TABLE `sites` (' sql += '`site_id` SMALLINT PRIMARY KEY NOT NULL,' sql += '`status_id` TINYINT NOT NULL REFERENCES `statuses`(`id`),' sql += '`quota` INT NOT NULL' sql += ')' snapshot_db.execute(sql) sql = 'INSERT INTO `sites` VALUES (?, ?, ?)' for site, quota in quotas.iteritems(): snapshot_cursor.execute( sql, (self._site_id_map[site.name], site.status, quota)) snapshot_db.commit() snapshot_cursor.close() snapshot_db.close() self._fill_snapshot_cache('sites', run_number, overwrite=True) if type(run_number) is int: # This was a numbered cycle # Archive the sqlite3 file # Relying on the fact save_quotas is called after save_deletion_decisions srun = '%09d' % run_number archive_dir_name = '%s/%s/%s' % (self.config.snapshots_archive_dir, srun[:3], srun[3:6]) xz_file_name = '%s/snapshot_%09d.db.xz' % (archive_dir_name, run_number) try: os.makedirs(archive_dir_name) except OSError: pass with open(db_file_name, 'rb') as db_file: with open(xz_file_name, 'wb') as xz_file: xz_file.write(lzma.compress(db_file.read())) def _do_get_deletion_decisions(self, run_number, size_only): #override self._fill_snapshot_cache('replicas', run_number) table_name = 'replicas_%d' % run_number if size_only: # return {site_name: (protect_size, delete_size, keep_size)} volumes = {} sites = set() query = 'SELECT s.`name`, SUM(r.`size`) * 1.e-12 FROM `%s`.`%s` AS r' % ( self._cache_db.db_name(), table_name) query += ' INNER JOIN `%s`.`sites` AS s ON s.`id` = r.`site_id`' % self._mysql.db_name( ) query += ' WHERE r.`decision` LIKE %s' query += ' GROUP BY r.`site_id`' for decision in ['protect', 'delete', 'keep']: volumes[decision] = dict(self._mysql.xquery(query, decision)) sites.update(set(volumes[decision].iterkeys())) product = {} for site_name in sites: v = {} for decision in ['protect', 'delete', 'keep']: try: v[decision] = volumes[decision][site_name] except: v[decision] = 0 product[site_name] = (v['protect'], v['delete'], v['keep']) return product else: # return {site_name: [(dataset_name, size, decision, reason)]} query = 'SELECT s.`name`, d.`name`, r.`size`, r.`decision`, p.`text` FROM `%s`.`%s` AS r' % ( self._cache_db.db_name(), table_name) query += ' INNER JOIN `%s`.`sites` AS s ON s.`id` = r.`site_id`' % self._mysql.db_name( ) query += ' INNER JOIN `%s`.`datasets` AS d ON d.`id` = r.`dataset_id`' % self._mysql.db_name( ) query += ' INNER JOIN `%s`.`policy_conditions` AS p ON p.`id` = r.`condition`' % self._mysql.db_name( ) query += ' ORDER BY s.`name` ASC, r.`size` DESC' product = {} _site_name = '' for site_name, dataset_name, size, decision, reason in self._cache_db.xquery( query): if site_name != _site_name: product[site_name] = [] current = product[site_name] _site_name = site_name current.append((dataset_name, size, decision, reason)) return product def _do_save_dataset_popularity(self, run_number, datasets): #override if len(self._dataset_id_map) == 0: self._make_dataset_id_map() fields = ('run_id', 'dataset_id', 'popularity') mapping = lambda dataset: (run_number, self._dataset_id_map[ dataset.name], dataset.attr['request_weight'] if 'request_weight' in dataset.attr else 0.) self._mysql.insert_many('dataset_popularity_snapshots', fields, mapping, datasets) def _do_get_incomplete_copies(self, partition): #override query = 'SELECT h.`id`, UNIX_TIMESTAMP(h.`timestamp`), h.`approved`, s.`name`, h.`size`' query += ' FROM `copy_requests` AS h' query += ' INNER JOIN `runs` AS r ON r.`id` = h.`run_id`' query += ' INNER JOIN `partitions` AS p ON p.`id` = r.`partition_id`' query += ' INNER JOIN `sites` AS s ON s.`id` = h.`site_id`' query += ' WHERE h.`id` > 0 AND p.`name` LIKE \'%s\' AND h.`completed` = 0 AND h.`run_id` > 0' % partition history_entries = self._mysql.xquery(query) id_to_record = {} for eid, timestamp, approved, site_name, size in history_entries: id_to_record[eid] = HistoryRecord(HistoryRecord.OP_COPY, eid, site_name, timestamp=timestamp, approved=approved, size=size) id_to_dataset = dict( self._mysql.xquery('SELECT `id`, `name` FROM `datasets`')) id_to_site = dict( self._mysql.xquery('SELECT `id`, `name` FROM `sites`')) replicas = self._mysql.select_many('copied_replicas', ('copy_id', 'dataset_id'), 'copy_id', id_to_record.iterkeys()) current_copy_id = 0 for copy_id, dataset_id in replicas: if copy_id != current_copy_id: record = id_to_record[copy_id] current_copy_id = copy_id record.replicas.append( HistoryRecord.CopiedReplica( dataset_name=id_to_dataset[dataset_id])) return id_to_record.values() def _do_get_copied_replicas(self, run_number): #override query = 'SELECT s.`name`, d.`name` FROM `copied_replicas` AS p' query += ' INNER JOIN `copy_requests` AS r ON r.`id` = p.`copy_id`' query += ' INNER JOIN `datasets` AS d ON d.`id` = p.`dataset_id`' query += ' INNER JOIN `sites` AS s ON s.`id` = r.`site_id`' query += ' WHERE r.`run_id` = %d' % run_number return self._mysql.query(query) def _do_get_site_name(self, operation_id): #override result = self._mysql.query( 'SELECT s.name FROM `sites` AS s INNER JOIN `copy_requests` AS h ON h.`site_id` = s.`id` WHERE h.`id` = %s', operation_id) if len(result) != 0: return result[0] result = self._mysql.query( 'SELECT s.name FROM `sites` AS s INNER JOIN `deletion_requests` AS h ON h.`site_id` = s.`id` WHERE h.`id` = %s', operation_id) if len(result) != 0: return result[0] return '' def _do_get_deletion_runs(self, partition, first, last): #override result = self._mysql.query( 'SELECT `id` FROM `partitions` WHERE `name` LIKE %s', partition) if len(result) == 0: return [] partition_id = result[0] sql = 'SELECT `id` FROM `runs` WHERE `partition_id` = %d AND `time_end` NOT LIKE \'0000-00-00 00:00:00\' AND `operation` IN (\'deletion\', \'deletion_test\')' % partition_id if first >= 0: sql += ' AND `id` >= %d' % first if last >= 0: sql += ' AND `id` <= %d' % last sql += ' ORDER BY `id` ASC' result = self._mysql.query(sql) if first < 0 and len(result) > 1: result = result[-1:] return result def _do_get_copy_runs(self, partition, first, last): #override result = self._mysql.query( 'SELECT `id` FROM `partitions` WHERE `name` LIKE %s', partition) if len(result) == 0: return [] partition_id = result[0] sql = 'SELECT `id` FROM `runs` WHERE `partition_id` = %d AND `time_end` NOT LIKE \'0000-00-00 00:00:00\' AND `operation` IN (\'copy\', \'copy_test\')' % partition_id if first >= 0: sql += ' AND `id` >= %d' % first if last >= 0: sql += ' AND `id` <= %d' % last sql += ' ORDER BY `id` ASC' if first < 0 and len(result) > 1: result = result[-1:] return result def _do_get_run_timestamp(self, run_number): #override result = self._mysql.query( 'SELECT UNIX_TIMESTAMP(`time_start`) FROM `runs` WHERE `id` = %s', run_number) if len(result) == 0: return 0 return result[0] def _do_get_next_test_id(self): #override copy_result = self._mysql.query( 'SELECT MIN(`id`) FROM `copy_requests`')[0] if copy_result == None: copy_result = 0 deletion_result = self._mysql.query( 'SELECT MIN(`id`) FROM `deletion_requests`')[0] if deletion_result == None: deletion_result = 0 return min(copy_result, deletion_result) - 1 def _make_site_id_map(self): self._site_id_map = {} for name, site_id in self._mysql.xquery( 'SELECT `name`, `id` FROM `sites`'): self._site_id_map[name] = int(site_id) def _make_dataset_id_map(self): self._dataset_id_map = {} for name, dataset_id in self._mysql.xquery( 'SELECT `name`, `id` FROM `datasets`'): self._dataset_id_map[name] = int(dataset_id) def _fill_snapshot_cache(self, template, run_number, overwrite=False): # run_number is either a cycle number or a partition name. %s works for both table_name = '%s_%s' % (template, run_number) sql = 'SELECT COUNT(*) FROM `information_schema`.`TABLES` WHERE `TABLE_SCHEMA` = %s AND `TABLE_NAME` = %s' table_exists = (self._mysql.query(sql, self._cache_db.db_name(), table_name)[0] != 0) if overwrite or not table_exists: # fill from sqlite if table_exists: self._cache_db.query('TRUNCATE TABLE `%s`' % table_name) else: self._cache_db.query('CREATE TABLE `%s` LIKE `%s`' % (table_name, template)) if type(run_number) is int: db_file_name = '%s/snapshot_%09d.db' % ( self.config.snapshots_spool_dir, run_number) if not os.path.exists(db_file_name): srun = '%09d' % run_number xz_file_name = '%s/%s/%s/snapshot_%09d.db.xz' % ( self.config.snapshots_archive_dir, srun[:3], srun[3:6], run_number) if not os.path.exists(xz_file_name): raise RuntimeError('Snapshot DB ' + db_file_name + ' does not exist') with open(xz_file_name, 'rb') as xz_file: with open(db_file_name, 'wb') as db_file: db_file.write(lzma.decompress(xz_file.read())) else: db_file_name = '%s/snapshot_%s.db' % ( self.config.snapshots_spool_dir, run_number) if not os.path.exists(db_file_name): return snapshot_db = sqlite3.connect(db_file_name) snapshot_db.text_factory = str # otherwise we'll get unicode and MySQLdb cannot convert that snapshot_cursor = snapshot_db.cursor() def make_snapshot_reader(): if template == 'replicas': sql = 'SELECT r.`site_id`, r.`dataset_id`, r.`size`, d.`value`, r.`condition` FROM `replicas` AS r' sql += ' INNER JOIN `decisions` AS d ON d.`id` = r.`decision_id`' elif template == 'sites': sql = 'SELECT s.`site_id`, t.`value`, s.`quota` FROM `sites` AS s' sql += ' INNER JOIN `statuses` AS t ON t.`id` = s.`status_id`' snapshot_cursor.execute(sql) while True: row = snapshot_cursor.fetchone() if row is None: return yield row snapshot_reader = make_snapshot_reader() if template == 'replicas': fields = ('site_id', 'dataset_id', 'size', 'decision', 'condition') elif template == 'sites': fields = ('site_id', 'status', 'quota') self._cache_db.insert_many(table_name, fields, None, snapshot_reader, do_update=False) snapshot_cursor.close() snapshot_db.close() if type(run_number) is int: self._cache_db.query( 'INSERT INTO `{template}_snapshot_usage` VALUES (%s, NOW())'. format(template=template), run_number) # also save into the main cache table sql = 'SELECT p.`name` FROM `partitions` AS p INNER JOIN `runs` AS r ON r.`partition_id` = p.`id` WHERE r.`id` = %s' partition = self._mysql.query(sql, run_number)[0] self._fill_snapshot_cache(template, partition, overwrite) self._clean_old_cache() def _clean_old_cache(self): sql = 'SELECT `run_id` FROM (SELECT `run_id`, MAX(`timestamp`) AS m FROM `replicas_snapshot_usage` GROUP BY `run_id`) AS t WHERE m < DATE_SUB(NOW(), INTERVAL 1 WEEK)' old_replica_runs = self._cache_db.query(sql) for old_run in old_replica_runs: table_name = 'replicas_%d' % old_run self._cache_db.query('DROP TABLE IF EXISTS `%s`' % table_name) sql = 'SELECT `run_id` FROM (SELECT `run_id`, MAX(`timestamp`) AS m FROM `sites_snapshot_usage` GROUP BY `run_id`) AS t WHERE m < DATE_SUB(NOW(), INTERVAL 1 WEEK)' old_site_runs = self._cache_db.query(sql) for old_run in old_site_runs: table_name = 'sites_%d' % old_run self._cache_db.query('DROP TABLE IF EXISTS `%s`' % table_name) for old_run in set(old_replica_runs) & set(old_site_runs): srun = '%09d' % old_run db_file_name = '%s/snapshot_%09d.db' % ( self.config.snapshots_spool_dir, old_run) if os.path.exists(db_file_name): try: os.unlink(db_file_name) except: LOG.error('Failed to delete %s' % db_file_name) pass self._cache_db.query( 'DELETE FROM `replicas_snapshot_usage` WHERE `timestamp` < DATE_SUB(NOW(), INTERVAL 1 WEEK)' ) self._cache_db.query('OPTIMIZE TABLE `replicas_snapshot_usage`') self._cache_db.query( 'DELETE FROM `sites_snapshot_usage` WHERE `timestamp` < DATE_SUB(NOW(), INTERVAL 1 WEEK)' ) self._cache_db.query('OPTIMIZE TABLE `sites_snapshot_usage`')
class HistoryDatabase(object): """ Interface to the history database. This is a MySQL-specific implementation, and we actually expose the backend database.. Will be a bit tricky to replace the backend when we need to do it. What we do with the history DB is very much application specific, so it makes little sense to have generic abstract interface to individual actions. The methods of this class are just a few of the common operations that are necessary for any history recording. """ # default configuration _config = Configuration() @staticmethod def set_default(config): HistoryDatabase._config = Configuration(config) def __init__(self, config = None): if config is None: config = HistoryDatabase._config self.db = MySQL(config.db_params) self.set_read_only(config.get('read_only', False)) def set_read_only(self, value = True): self._read_only = value def save_users(self, user_list, get_ids = False): """ @param user_list [(name, dn)] """ if self._read_only: if get_ids: return [0] * len(user_list) else: return self.db.insert_many('users', ('name', 'dn'), None, user_list, do_update = True) if get_ids: return self.db.select_many('users', ('id',), 'dn', [u[1] for u in user_list]) def save_user_services(self, service_names, get_ids = False): if self._read_only: if get_ids: return [0] * len(service_names) else: return self.db.insert_many('user_services', ('name',), MySQL.make_tuple, service_names, do_update = True) if get_ids: return self.db.select_many('user_services', ('id',), 'name', service_names) def save_partitions(self, partition_names, get_ids = False): if self._read_only: if get_ids: return [0] * len(partition_names) else: return self.db.insert_many('partitions', ('name',), MySQL.make_tuple, partition_names, do_update = True) if get_ids: return self.db.select_many('partitions', ('id',), 'name', partition_names) def save_sites(self, site_names, get_ids = False): if self._read_only: if get_ids: return [0] * len(site_names) else: return self.db.insert_many('sites', ('name',), MySQL.make_tuple, site_names, do_update = True) if get_ids: return self.db.select_many('sites', ('id',), 'name', site_names) def save_groups(self, group_names, get_ids = False): if self._read_only: if get_ids: return [0] * len(group_names) else: return self.db.insert_many('groups', ('name',), MySQL.make_tuple, group_names, do_update = True) if get_ids: return self.db.select_many('groups', ('id',), 'name', group_names) def save_datasets(self, dataset_names, get_ids = False): if self._read_only: if get_ids: return [0] * len(dataset_names) else: return self.db.insert_many('datasets', ('name',), MySQL.make_tuple, dataset_names, do_update = True) if get_ids: return self.db.select_many('datasets', ('id',), 'name', dataset_names) def save_blocks(self, block_list, get_ids = False): """ @param block_list [(dataset name, block name)] """ if self._read_only: if get_ids: return [0] * len(block_list) else: return reuse_orig = self.db.reuse_connection self.db.reuse_connection = True datasets = set(b[0] for b in block_list) self.save_datasets(datasets) columns = [ '`dataset` varchar(512) CHARACTER SET latin1 COLLATE latin1_general_cs NOT NULL', '`block` varchar(128) CHARACTER SET latin1 COLLATE latin1_general_cs NOT NULL' ] self.db.create_tmp_table('blocks_tmp', columns) self.db.insert_many('blocks_tmp', ('dataset', 'block'), None, block_list, db = self.db.scratch_db) sql = 'INSERT INTO `blocks` (`dataset_id`, `name`)' sql += ' SELECT d.`id`, b.`block` FROM `{scratch}`.`blocks_tmp` AS b'.format(scratch = self.db.scratch_db) sql += ' INNER JOIN `datasets` AS d ON d.`name` = b.`dataset`' self.db.query(sql) if get_ids: sql = 'SELECT b.`id` FROM `blocks` AS b' sql += ' INNER JOIN (SELECT d.`id` dataset_id, t.`block` block_name FROM `{scratch}`.`blocks_tmp` AS t'.format(scratch = self.db.scratch_db) sql += ' INNER JOIN `datasets` AS d ON d.`name` = t.`dataset`) AS j ON (j.`dataset_id`, j.`block_name`) = (b.`dataset_id`, b.`name`)' ids = self.db.query(sql) self.db.drop_tmp_table('blocks_tmp') self.db.reuse_connection = reuse_orig if get_ids: return ids def save_files(self, file_data, get_ids = False): if self._read_only: if get_ids: return [0] * len(file_data) else: return self.db.insert_many('files', ('name', 'size'), None, file_data, do_update = True) if get_ids: return self.db.select_many('files', ('id',), 'name', [f[0] for f in file_data])