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request.py
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request.py
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# -*- coding: utf-8 -*-
# Copyright 2013-2021 CERN
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# Authors:
# - Mario Lassnig <mario.lassnig@cern.ch>, 2013-2021
# - Vincent Garonne <vincent.garonne@cern.ch>, 2013-2017
# - Cedric Serfon <cedric.serfon@cern.ch>, 2014-2020
# - Martin Barisits <martin.barisits@cern.ch>, 2014-2021
# - Wen Guan <wen.guan@cern.ch>, 2014-2016
# - Joaquín Bogado <jbogado@linti.unlp.edu.ar>, 2015-2019
# - Thomas Beermann <thomas.beermann@cern.ch>, 2016-2021
# - Joaquin Bogado <jbogadog@cern.ch>, 2017
# - Igor Mandrichenko <rucio@fermicloud055.fnal.gov>, 2018
# - Robert Illingworth <illingwo@fnal.gov>, 2018
# - Hannes Hansen <hannes.jakob.hansen@cern.ch>, 2018-2019
# - Andrew Lister <andrew.lister@stfc.ac.uk>, 2019
# - Brandon White <bjwhite@fnal.gov>, 2019
# - Benedikt Ziemons <benedikt.ziemons@cern.ch>, 2020-2021
# - Radu Carpa <radu.carpa@cern.ch>, 2021
# - Matt Snyder <msnyder@bnl.gov>, 2021
# - Sahan Dilshan <32576163+sahandilshan@users.noreply.github.com>, 2021
# - Nick Smith <nick.smith@cern.ch>, 2021
# - David Población Criado <david.poblacion.criado@cern.ch>, 2021
import datetime
import json
import logging
import time
import traceback
from collections import namedtuple
from itertools import filterfalse
from typing import TYPE_CHECKING
from six import string_types
from sqlalchemy import and_, or_, func, update
from sqlalchemy.exc import IntegrityError
from sqlalchemy.sql.expression import asc, true
from rucio.common.config import config_get_bool
from rucio.common.constants import FTS_STATE
from rucio.common.exception import RequestNotFound, RucioException, UnsupportedOperation, ConfigNotFound
from rucio.common.types import InternalAccount, InternalScope
from rucio.common.utils import generate_uuid, chunks, get_parsed_throttler_mode
from rucio.core.config import get
from rucio.core.message import add_message
from rucio.core.monitor import record_counter, record_timer
from rucio.core.rse import get_rse_name, get_rse_vo, get_rse_transfer_limits, get_rse_attribute
from rucio.db.sqla import models, filter_thread_work
from rucio.db.sqla.constants import RequestState, RequestType, LockState, RequestErrMsg
from rucio.db.sqla.session import read_session, transactional_session, stream_session
from rucio.transfertool.fts3 import FTS3Transfertool
RequestAndState = namedtuple('RequestAndState', ['request_id', 'request_state'])
if TYPE_CHECKING:
from rucio.core.transfer import RequestWithSources
from typing import Any, Dict, Iterable, Iterator, List, Optional, Callable, Set, Union
from sqlalchemy.orm import Session
RequestResult = Dict[str, Any]
RequestResultOrState = Union[RequestResult, RequestAndState]
RowIterator = Iterator[RequestResult]
ReduceFunction = Callable[[RowIterator], RowIterator]
"""
The core request.py is specifically for handling requests.
Requests accessed by external_id (So called transfers), are covered in the core transfer.py
"""
def should_retry_request(req, retry_protocol_mismatches):
"""
Whether should retry this request.
:param request: Request as a dictionary.
:param retry_protocol_mismatches: Boolean to retry the transfer in case of protocol mismatch.
:returns: True if should retry it; False if no more retry.
"""
if req['state'] == RequestState.SUBMITTING:
return True
if req['state'] == RequestState.NO_SOURCES or req['state'] == RequestState.ONLY_TAPE_SOURCES:
return False
# hardcoded for now - only requeue a couple of times
if req['retry_count'] is None or req['retry_count'] < 3:
if req['state'] == RequestState.MISMATCH_SCHEME:
return retry_protocol_mismatches
return True
return False
@transactional_session
def requeue_and_archive(request, retry_protocol_mismatches=False, session=None, logger=logging.log):
"""
Requeue and archive a failed request.
TODO: Multiple requeue.
:param request: Original request.
:param session: Database session to use.
:param logger: Optional decorated logger that can be passed from the calling daemons or servers.
"""
record_counter('core.request.requeue_request')
# Probably not needed anymore
request_id = request['request_id']
new_req = get_request(request_id, session=session)
if new_req:
new_req['sources'] = get_sources(request_id, session=session)
archive_request(request_id, session=session)
if should_retry_request(new_req, retry_protocol_mismatches):
new_req['request_id'] = generate_uuid()
new_req['previous_attempt_id'] = request_id
if new_req['retry_count'] is None:
new_req['retry_count'] = 1
elif new_req['state'] != RequestState.SUBMITTING:
new_req['retry_count'] += 1
if new_req['sources']:
for i in range(len(new_req['sources'])):
if new_req['sources'][i]['is_using']:
if new_req['sources'][i]['ranking'] is None:
new_req['sources'][i]['ranking'] = -1
else:
new_req['sources'][i]['ranking'] -= 1
new_req['sources'][i]['is_using'] = False
queue_requests([new_req], session=session, logger=logger)
return new_req
else:
raise RequestNotFound
return None
@transactional_session
def queue_requests(requests, session=None, logger=logging.log):
"""
Submit transfer requests on destination RSEs for data identifiers.
:param requests: List of dictionaries containing request metadata.
:param session: Database session to use.
:param logger: Optional decorated logger that can be passed from the calling daemons or servers.
:returns: List of Request-IDs as 32 character hex strings.
"""
record_counter('core.request.queue_requests')
logger(logging.DEBUG, "queue requests")
request_clause = []
rses = {}
preparer_enabled = config_get_bool('conveyor', 'use_preparer', raise_exception=False, default=False)
for req in requests:
if isinstance(req['attributes'], string_types):
req['attributes'] = json.loads(req['attributes'])
if isinstance(req['attributes'], string_types):
req['attributes'] = json.loads(req['attributes'])
if req['request_type'] == RequestType.TRANSFER:
request_clause.append(and_(models.Request.scope == req['scope'],
models.Request.name == req['name'],
models.Request.dest_rse_id == req['dest_rse_id'],
models.Request.request_type == RequestType.TRANSFER))
if req['dest_rse_id'] not in rses:
rses[req['dest_rse_id']] = get_rse_name(req['dest_rse_id'], session=session)
# Check existing requests
if request_clause:
existing_requests = []
for requests_condition in chunks(request_clause, 1000):
query_existing_requests = session.query(models.Request.scope,
models.Request.name,
models.Request.dest_rse_id).\
with_hint(models.Request,
"INDEX(REQUESTS REQUESTS_SC_NA_RS_TY_UQ_IDX)",
'oracle').\
filter(or_(*requests_condition))
for request in query_existing_requests:
existing_requests.append(request)
new_requests, sources, messages = [], [], []
for request in requests:
dest_rse_name = get_rse_name(rse_id=request['dest_rse_id'], session=session)
if req['request_type'] == RequestType.TRANSFER and (request['scope'], request['name'], request['dest_rse_id']) in existing_requests:
logger(logging.WARNING, 'Request TYPE %s for DID %s:%s at RSE %s exists - ignoring' % (request['request_type'],
request['scope'],
request['name'],
dest_rse_name))
continue
def temp_serializer(obj):
if isinstance(obj, (InternalAccount, InternalScope)):
return obj.internal
raise TypeError('Could not serialise object %r' % obj)
request['state'] = RequestState.PREPARING if preparer_enabled else RequestState.QUEUED
new_request = {'request_type': request['request_type'],
'scope': request['scope'],
'name': request['name'],
'dest_rse_id': request['dest_rse_id'],
'source_rse_id': request.get('source_rse_id', None),
'attributes': json.dumps(request['attributes'], default=temp_serializer),
'state': request['state'],
'rule_id': request['rule_id'],
'activity': request['attributes']['activity'],
'bytes': request['attributes']['bytes'],
'md5': request['attributes']['md5'],
'adler32': request['attributes']['adler32'],
'account': request.get('account', None),
'priority': request['attributes'].get('priority', None),
'requested_at': request.get('requested_at', None),
'retry_count': request['retry_count']}
if 'previous_attempt_id' in request and 'retry_count' in request:
new_request['previous_attempt_id'] = request['previous_attempt_id']
new_request['id'] = request['request_id']
else:
new_request['id'] = generate_uuid()
new_requests.append(new_request)
if 'sources' in request and request['sources']:
for source in request['sources']:
sources.append({'request_id': new_request['id'],
'scope': request['scope'],
'name': request['name'],
'rse_id': source['rse_id'],
'dest_rse_id': request['dest_rse_id'],
'ranking': source['ranking'],
'bytes': source['bytes'],
'url': source['url'],
'is_using': source['is_using']})
if request['request_type']:
transfer_status = '%s-%s' % (request['request_type'].name, request['state'].name)
else:
transfer_status = 'transfer-%s' % request['state'].name
transfer_status = transfer_status.lower()
payload = {'request-id': new_request['id'],
'request-type': request['request_type'].name.lower(),
'scope': request['scope'].external,
'name': request['name'],
'dst-rse-id': request['dest_rse_id'],
'dst-rse': dest_rse_name,
'state': request['state'].name.lower(),
'retry-count': request['retry_count'],
'rule-id': str(request['rule_id']),
'activity': request['attributes']['activity'],
'file-size': request['attributes']['bytes'],
'bytes': request['attributes']['bytes'],
'checksum-md5': request['attributes']['md5'],
'checksum-adler': request['attributes']['adler32'],
'queued_at': str(datetime.datetime.utcnow())}
messages.append({'event_type': transfer_status,
'payload': json.dumps(payload)})
for requests_chunk in chunks(new_requests, 1000):
session.bulk_insert_mappings(models.Request, requests_chunk)
for sources_chunk in chunks(sources, 1000):
session.bulk_insert_mappings(models.Source, sources_chunk)
for messages_chunk in chunks(messages, 1000):
session.bulk_insert_mappings(models.Message, messages_chunk)
return new_requests
@read_session
def get_next(request_type, state, limit=100, older_than=None, rse_id=None, activity=None,
total_workers=0, worker_number=0, mode_all=False, hash_variable='id',
activity_shares=None, transfertool=None, session=None):
"""
Retrieve the next requests matching the request type and state.
Workers are balanced via hashing to reduce concurrency on database.
:param request_type: Type of the request as a string or list of strings.
:param state: State of the request as a string or list of strings.
:param limit: Integer of requests to retrieve.
:param older_than: Only select requests older than this DateTime.
:param rse_id: The RSE to filter on.
:param activity: The activity to filter on.
:param total_workers: Number of total workers.
:param worker_number: Id of the executing worker.
:param mode_all: If set to True the function returns everything, if set to False returns list of dictionaries {'request_id': x, 'external_host': y, 'external_id': z}.
:param hash_variable: The variable to use to perform the partitioning. By default it uses the request id.
:param activity_shares: Activity shares dictionary, with number of requests
:param transfertool: The transfer tool as specified in rucio.cfg.
:param session: Database session to use.
:returns: Request as a dictionary.
"""
record_counter('core.request.get_next.%s-%s' % (request_type, state))
# lists of one element are not allowed by SQLA, so just duplicate the item
if type(request_type) is not list:
request_type = [request_type, request_type]
elif len(request_type) == 1:
request_type = [request_type[0], request_type[0]]
if type(state) is not list:
state = [state, state]
elif len(state) == 1:
state = [state[0], state[0]]
result = []
if not activity_shares:
activity_shares = [None]
for share in activity_shares:
if transfertool:
query = session.query(models.Request).with_hint(models.Request, "INDEX(REQUESTS REQUESTS_TYP_STA_TRA_ACT_IDX)", 'oracle')\
.filter(models.Request.state.in_(state))\
.filter(models.Request.request_type.in_(request_type))\
.filter(models.Request.transfertool == transfertool)\
.order_by(asc(models.Request.updated_at))
else:
query = session.query(models.Request).with_hint(models.Request, "INDEX(REQUESTS REQUESTS_TYP_STA_UPD_IDX)", 'oracle')\
.filter(models.Request.state.in_(state))\
.filter(models.Request.request_type.in_(request_type))\
.order_by(asc(models.Request.updated_at))
if isinstance(older_than, datetime.datetime):
query = query.filter(models.Request.updated_at < older_than)
if rse_id:
query = query.filter(models.Request.dest_rse_id == rse_id)
if share:
query = query.filter(models.Request.activity == share)
elif activity:
query = query.filter(models.Request.activity == activity)
query = filter_thread_work(session=session, query=query, total_threads=total_workers, thread_id=worker_number, hash_variable=hash_variable)
if share:
query = query.limit(activity_shares[share])
else:
query = query.limit(limit)
query_result = query.all()
if query_result:
if mode_all:
for res in query_result:
res_dict = dict(res)
res_dict.pop('_sa_instance_state')
res_dict['request_id'] = res_dict['id']
res_dict['attributes'] = json.loads(str(res_dict['attributes']))
dst_id = res_dict['dest_rse_id']
src_id = res_dict['source_rse_id']
res_dict['dest_rse'] = get_rse_name(rse_id=dst_id, session=session) if dst_id is not None else None
res_dict['source_rse'] = get_rse_name(rse_id=src_id, session=session) if src_id is not None else None
result.append(res_dict)
else:
for res in query_result:
result.append({'request_id': res.id, 'external_host': res.external_host, 'external_id': res.external_id})
return result
@read_session
def query_request(request_id, transfertool='fts3', session=None, logger=logging.log):
"""
Query the status of a request.
:param request_id: Request-ID as a 32 character hex string.
:param transfertool: Transfertool name as a string.
:param session: Database session to use.
:param logger: Optional decorated logger that can be passed from the calling daemons or servers.
:returns: Request status information as a dictionary.
"""
record_counter('core.request.query_request')
req = get_request(request_id, session=session)
req_status = {'request_id': request_id,
'new_state': None}
if not req:
req_status['new_state'] = RequestState.LOST
return req_status
if transfertool == 'fts3':
try:
ts = time.time()
response = FTS3Transfertool(external_host=req['external_host']).query(transfer_ids=[req['external_id']], details=False)
record_timer('core.request.query_request_fts3', (time.time() - ts) * 1000)
req_status['details'] = response
except Exception:
raise
if response is None:
req_status['new_state'] = RequestState.LOST
else:
if 'job_state' not in response:
req_status['new_state'] = RequestState.LOST
elif response['job_state'] in (FTS_STATE.FAILED,
FTS_STATE.FINISHEDDIRTY,
FTS_STATE.CANCELED):
req_status['new_state'] = RequestState.FAILED
elif response['job_state'] == FTS_STATE.FINISHED:
req_status['new_state'] = RequestState.DONE
else:
raise NotImplementedError
return req_status
@read_session
def query_request_details(request_id, transfertool='fts3', session=None, logger=logging.log):
"""
Query the detailed status of a request. Can also be done after the
external transfer has finished.
:param request_id: Request-ID as a 32 character hex string.
:param transfertool: Transfertool name as a string.
:param session: Database session to use.
:param logger: Optional decorated logger that can be passed from the calling daemons or servers.
:returns: Detailed request status information as a dictionary.
"""
record_counter('core.request.query_request_details')
req = get_request(request_id, session=session)
if not req:
return
if transfertool == 'fts3':
ts = time.time()
tmp = FTS3Transfertool(external_host=req['external_host']).query(transfer_ids=[req['external_id']], details=True)
record_timer('core.request.query_details_fts3', (time.time() - ts) * 1000)
return tmp
raise NotImplementedError
@transactional_session
def set_request_state(request_id, new_state, transfer_id=None, transferred_at=None, started_at=None, staging_started_at=None, staging_finished_at=None, src_rse_id=None, err_msg=None, session=None, logger=logging.log):
"""
Update the state of a request.
:param request_id: Request-ID as a 32 character hex string.
:param new_state: New state as string.
:param transfer_id: External transfer job id as a string.
:param transferred_at: Transferred at timestamp
:param started_at: Started at timestamp
:param staging_started_at: Timestamp indicating the moment the stage beggins
:param staging_finished_at: Timestamp indicating the moment the stage ends
:param logger: Optional decorated logger that can be passed from the calling daemons or servers.
:param session: Database session to use.
"""
# TODO: Should this be a private method?
record_counter('core.request.set_request_state')
rowcount = 0
try:
update_items = {'state': new_state, 'updated_at': datetime.datetime.utcnow()}
if transferred_at:
update_items['transferred_at'] = transferred_at
if started_at:
update_items['started_at'] = started_at
if staging_started_at:
update_items['staging_started_at'] = staging_started_at
if staging_finished_at:
update_items['staging_finished_at'] = staging_finished_at
if src_rse_id:
update_items['source_rse_id'] = src_rse_id
if err_msg:
update_items['err_msg'] = err_msg
request = get_request(request_id, session=session)
if new_state in [RequestState.FAILED, RequestState.DONE, RequestState.LOST] and (request["external_id"] != transfer_id):
logger(logging.ERROR, "Request %s should not be updated to 'Failed' or 'Done' without external transfer_id" % request_id)
else:
rowcount = session.query(models.Request).filter_by(id=request_id).update(update_items, synchronize_session=False)
except IntegrityError as error:
raise RucioException(error.args)
if not rowcount:
raise UnsupportedOperation("Request %s state cannot be updated." % request_id)
@transactional_session
def set_requests_state(request_ids, new_state, session=None, logger=logging.log):
"""
Bulk update the state of requests.
:param request_ids: List of (Request-ID as a 32 character hex string).
:param new_state: New state as string.
:param session: Database session to use.
:param logger: Optional decorated logger that can be passed from the calling daemons or servers.
"""
record_counter('core.request.set_requests_state')
try:
for request_id in request_ids:
set_request_state(request_id, new_state, session=session, logger=logger)
except IntegrityError as error:
raise RucioException(error.args)
@transactional_session
def set_requests_state_if_possible(request_ids, new_state, session=None, logger=logging.log):
"""
Bulk update the state of requests. Skips silently if the request_id does not exist.
:param request_ids: List of (Request-ID as a 32 character hex string).
:param new_state: New state as string.
:param session: Database session to use.
:param logger: Optional decorated logger that can be passed from the calling daemons or servers.
"""
record_counter('core.request.set_requests_state_if_possible')
try:
for request_id in request_ids:
try:
set_request_state(request_id, new_state, session=session, logger=logger)
except UnsupportedOperation:
continue
except IntegrityError as error:
raise RucioException(error.args)
@transactional_session
def touch_requests_by_rule(rule_id, session=None):
"""
Update the update time of requests in a rule. Fails silently if no requests on this rule.
:param rule_id: Rule-ID as a 32 character hex string.
:param session: Database session to use.
"""
record_counter('core.request.touch_requests_by_rule')
try:
stmt = update(models.Request).prefix_with("/*+ INDEX(REQUESTS REQUESTS_RULEID_IDX) */", dialect='oracle')\
.filter_by(rule_id=rule_id)\
.where(models.Request.state.in_([RequestState.FAILED, RequestState.DONE, RequestState.LOST, RequestState.NO_SOURCES, RequestState.ONLY_TAPE_SOURCES]))\
.where(models.Request.updated_at < datetime.datetime.utcnow())\
.execution_options(synchronize_session=False)\
.values(updated_at=datetime.datetime.utcnow() + datetime.timedelta(minutes=20))
session.execute(stmt)
except IntegrityError as error:
raise RucioException(error.args)
@read_session
def get_request(request_id, session=None):
"""
Retrieve a request by its ID.
:param request_id: Request-ID as a 32 character hex string.
:param session: Database session to use.
:returns: Request as a dictionary.
"""
try:
tmp = session.query(models.Request).filter_by(id=request_id).first()
if not tmp:
return
else:
tmp = dict(tmp)
tmp.pop('_sa_instance_state')
return tmp
except IntegrityError as error:
raise RucioException(error.args)
@read_session
def get_requests_by_transfer(external_host, transfer_id, session=None):
"""
Retrieve requests by its transfer ID.
:param request_host: Name of the external host.
:param transfer_id: External transfer job id as a string.
:param session: Database session to use.
:returns: List of Requests.
"""
try:
tmp = session.query(models.Request).filter_by(external_id=transfer_id).all()
if tmp:
result = []
for t in tmp:
t2 = dict(t)
t2.pop('_sa_instance_state')
t2['request_id'] = t2['id']
t2['attributes'] = json.loads(str(t2['attributes']))
result.append(t2)
return result
return
except IntegrityError as error:
raise RucioException(error.args)
@read_session
def get_request_by_did(scope, name, rse_id, request_type=None, session=None):
"""
Retrieve a request by its DID for a destination RSE.
:param scope: The scope of the data identifier.
:param name: The name of the data identifier.
:param rse_id: The destination RSE ID of the request.
:param request_type: The type of request as rucio.db.sqla.constants.RequestType.
:param session: Database session to use.
:returns: Request as a dictionary.
"""
record_counter('core.request.get_request_by_did')
try:
tmp = session.query(models.Request).filter_by(scope=scope,
name=name)
tmp = tmp.filter_by(dest_rse_id=rse_id)
if request_type:
tmp = tmp.filter_by(request_type=request_type)
tmp = tmp.first()
if not tmp:
raise RequestNotFound(f'No request found for DID {scope}:{name} at RSE {rse_id}')
else:
tmp = dict(tmp)
tmp.pop('_sa_instance_state')
tmp['source_rse'] = get_rse_name(rse_id=tmp['source_rse_id'], session=session) if tmp['source_rse_id'] is not None else None
tmp['dest_rse'] = get_rse_name(rse_id=tmp['dest_rse_id'], session=session) if tmp['dest_rse_id'] is not None else None
return tmp
except IntegrityError as error:
raise RucioException(error.args)
@transactional_session
def archive_request(request_id, session=None):
"""
Move a request to the history table.
:param request_id: Request-ID as a 32 character hex string.
:param session: Database session to use.
"""
record_counter('core.request.archive')
req = get_request(request_id=request_id, session=session)
if req:
hist_request = models.RequestHistory(id=req['id'],
created_at=req['created_at'],
request_type=req['request_type'],
scope=req['scope'],
name=req['name'],
dest_rse_id=req['dest_rse_id'],
source_rse_id=req['source_rse_id'],
attributes=req['attributes'],
state=req['state'],
account=req['account'],
external_id=req['external_id'],
retry_count=req['retry_count'],
err_msg=req['err_msg'],
previous_attempt_id=req['previous_attempt_id'],
external_host=req['external_host'],
rule_id=req['rule_id'],
activity=req['activity'],
bytes=req['bytes'],
md5=req['md5'],
adler32=req['adler32'],
dest_url=req['dest_url'],
requested_at=req['requested_at'],
submitted_at=req['submitted_at'],
staging_started_at=req['staging_started_at'],
staging_finished_at=req['staging_finished_at'],
started_at=req['started_at'],
estimated_started_at=req['estimated_started_at'],
estimated_at=req['estimated_at'],
transferred_at=req['transferred_at'],
estimated_transferred_at=req['estimated_transferred_at'],
transfertool=req['transfertool'])
hist_request.save(session=session)
try:
time_diff = req['updated_at'] - req['created_at']
time_diff_s = time_diff.seconds + time_diff.days * 24 * 3600
record_timer('core.request.archive_request.%s' % req['activity'].replace(' ', '_'), time_diff_s)
session.query(models.Source).filter_by(request_id=request_id).delete()
session.query(models.Request).filter_by(id=request_id).delete()
except IntegrityError as error:
raise RucioException(error.args)
@transactional_session
def cancel_request_did(scope, name, dest_rse_id, request_type=RequestType.TRANSFER, session=None, logger=logging.log):
"""
Cancel a request based on a DID and request type.
:param scope: Data identifier scope as a string.
:param name: Data identifier name as a string.
:param dest_rse_id: RSE id as a string.
:param request_type: Type of the request.
:param session: Database session to use.
:param logger: Optional decorated logger that can be passed from the calling daemons or servers.
"""
record_counter('core.request.cancel_request_did')
reqs = None
try:
reqs = session.query(models.Request.id,
models.Request.external_id,
models.Request.external_host).filter_by(scope=scope,
name=name,
dest_rse_id=dest_rse_id,
request_type=request_type).all()
if not reqs:
logger(logging.WARNING, 'Tried to cancel non-existant request for DID %s:%s at RSE %s' % (scope, name, get_rse_name(rse_id=dest_rse_id, session=session)))
except IntegrityError as error:
raise RucioException(error.args)
transfertool_map = {}
for req in reqs:
# is there a transfer already in FTS3? if so, try to cancel it
if req[1] is not None:
try:
if req[2] not in transfertool_map:
transfertool_map[req[2]] = FTS3Transfertool(external_host=req[2])
transfertool_map[req[2]].cancel(transfer_ids=[req[1]])
except Exception as error:
logger(logging.WARNING, 'Could not cancel FTS3 transfer %s on %s: %s' % (req[1], req[2], str(error)))
archive_request(request_id=req[0], session=session)
def cancel_request_external_id(transfer_id, transfer_host):
"""
Cancel a request based on external transfer id.
:param transfer_id: External-ID as a 32 character hex string.
:param transfer_host: Name of the external host.
"""
record_counter('core.request.cancel_request_external_id')
try:
FTS3Transfertool(external_host=transfer_host).cancel(transfer_ids=[transfer_id])
except Exception:
raise RucioException('Could not cancel FTS3 transfer %s on %s: %s' % (transfer_id, transfer_host, traceback.format_exc()))
@read_session
def get_sources(request_id, rse_id=None, session=None):
"""
Retrieve sources by its ID.
:param request_id: Request-ID as a 32 character hex string.
:param rse_id: RSE ID as a 32 character hex string.
:param session: Database session to use.
:returns: Sources as a dictionary.
"""
try:
if rse_id:
tmp = session.query(models.Source).filter_by(request_id=request_id, rse_id=rse_id).all()
else:
tmp = session.query(models.Source).filter_by(request_id=request_id).all()
if not tmp:
return
else:
result = []
for t in tmp:
t2 = dict(t)
t2.pop('_sa_instance_state')
result.append(t2)
return result
except IntegrityError as error:
raise RucioException(error.args)
@read_session
def get_heavy_load_rses(threshold, session=None):
"""
Retrieve heavy load rses.
:param threshold: Threshold as an int.
:param session: Database session to use.
:returns: .
"""
try:
results = session.query(models.Source.rse_id, func.count(models.Source.rse_id).label('load'))\
.filter(models.Source.is_using == true())\
.group_by(models.Source.rse_id)\
.all()
if not results:
return
result = []
for t in results:
if t[1] >= threshold:
t2 = {'rse_id': t[0], 'load': t[1]}
result.append(t2)
return result
except IntegrityError as error:
raise RucioException(error.args)
@read_session
def get_stats_by_activity_direction_state(state, all_activities=False, direction='destination', session=None):
"""
Retrieve statistics about requests by destination, activity and state.
:param state: Request state.
:param all_activities: Boolean whether requests are grouped by activity or if activities are ignored.
:param direction: Direction if requests are grouped by source RSE or destination RSE.
:param session: Database session to use.
:returns: List of (activity, dest_rse_id, state, counter).
"""
if type(state) is not list:
state = [state, state]
try:
subquery = None
inner_select = [models.Request.account, models.Request.state,
func.count(1).label('counter')]
if direction == 'destination' and all_activities:
inner_select.append(models.Request.dest_rse_id)
group_by = (models.Request.dest_rse_id, )
elif direction == 'source' and all_activities:
inner_select.append(models.Request.source_rse_id)
group_by = (models.Request.source_rse_id, )
elif direction == 'destination' and not all_activities:
inner_select.append(models.Request.activity)
inner_select.append(models.Request.dest_rse_id)
group_by = (models.Request.dest_rse_id, models.Request.activity)
elif direction == 'source' and not all_activities:
inner_select.append(models.Request.activity)
inner_select.append(models.Request.source_rse_id)
group_by = (models.Request.source_rse_id, models.Request.activity)
subquery = session.query(*inner_select)\
.with_hint(models.Request, "INDEX(REQUESTS REQUESTS_TYP_STA_UPD_IDX)", 'oracle')\
.filter(models.Request.state.in_(state))\
.group_by(models.Request.account,
models.Request.state)\
.group_by(*group_by)\
.subquery()
outer_select = [subquery.c.account,
subquery.c.state,
models.RSE.rse,
subquery.c.counter]
if direction == 'destination':
outer_select.append(subquery.c.dest_rse_id)
filter_condition = (models.RSE.id == subquery.c.dest_rse_id)
elif direction == 'source':
outer_select.append(subquery.c.source_rse_id)
filter_condition = (models.RSE.id == subquery.c.source_rse_id)
if not all_activities:
outer_select.append(subquery.c.activity)
return session.query(*outer_select)\
.with_hint(models.RSE, "INDEX(RSES RSES_PK)", 'oracle')\
.filter(filter_condition).all()
except IntegrityError as error:
raise RucioException(error.args)
@transactional_session
def release_waiting_requests_per_deadline(rse_id=None, deadline=1, session=None):
"""
Release waiting requests that were waiting too long and exceeded the maximum waiting time to be released.
If the DID of a request is attached to a dataset, the oldest requested_at date of all requests related to the dataset will be used for checking and all requests of this dataset will be released.
:param rse_id: The source RSE id.
:param deadline: Maximal waiting time in hours until a dataset gets released.
:param session: The database session.
"""
amount_released_requests = 0
if deadline:
grouped_requests_subquery, filtered_requests_subquery = create_base_query_grouped_fifo(rse_id, filter_by_rse='source', session=session)
old_requests_subquery = session.query(grouped_requests_subquery.c.name,
grouped_requests_subquery.c.scope,
grouped_requests_subquery.c.oldest_requested_at)\
.filter(grouped_requests_subquery.c.oldest_requested_at < datetime.datetime.now() - datetime.timedelta(hours=deadline))\
.subquery()
old_requests_subquery = session.query(filtered_requests_subquery.c.id)\
.join(old_requests_subquery, and_(filtered_requests_subquery.c.dataset_name == old_requests_subquery.c.name, filtered_requests_subquery.c.dataset_scope == old_requests_subquery.c.scope))
old_requests_subquery = old_requests_subquery.subquery()
amount_released_requests = session.query(models.Request) \
.filter(models.Request.id.in_(old_requests_subquery)) \
.update({models.Request.state: RequestState.QUEUED}, synchronize_session=False)
return amount_released_requests
@transactional_session
def release_waiting_requests_per_free_volume(rse_id, volume=None, session=None):
"""
Release waiting requests if they fit in available transfer volume. If the DID of a request is attached to a dataset, the volume will be checked for the whole dataset as all requests related to this dataset will be released.
:param rse_id: The destination RSE id.
:param volume: The maximum volume in bytes that should be transfered.
:param session: The database session.
"""
dialect = session.bind.dialect.name
sum_volume_active_subquery = None
if dialect == 'mysql' or dialect == 'sqlite':
sum_volume_active_subquery = session.query(func.ifnull(func.sum(models.Request.bytes), 0).label('sum_bytes'))\
.filter(and_(or_(models.Request.state == RequestState.SUBMITTED, models.Request.state == RequestState.QUEUED),
models.Request.dest_rse_id == rse_id))
elif dialect == 'postgresql':
sum_volume_active_subquery = session.query(func.coalesce(func.sum(models.Request.bytes), 0).label('sum_bytes'))\
.filter(and_(or_(models.Request.state == RequestState.SUBMITTED, models.Request.state == RequestState.QUEUED),
models.Request.dest_rse_id == rse_id))
elif dialect == 'oracle':
sum_volume_active_subquery = session.query(func.nvl(func.sum(models.Request.bytes), 0).label('sum_bytes'))\
.filter(and_(or_(models.Request.state == RequestState.SUBMITTED, models.Request.state == RequestState.QUEUED),
models.Request.dest_rse_id == rse_id))
sum_volume_active_subquery = sum_volume_active_subquery.subquery()
grouped_requests_subquery, filtered_requests_subquery = create_base_query_grouped_fifo(rse_id, filter_by_rse='destination', session=session)
cumulated_volume_subquery = session.query(grouped_requests_subquery.c.name,
grouped_requests_subquery.c.scope,
func.sum(grouped_requests_subquery.c.volume).over(order_by=grouped_requests_subquery.c.oldest_requested_at).label('cum_volume'))\
.filter(grouped_requests_subquery.c.volume <= volume - sum_volume_active_subquery.c.sum_bytes)\
.subquery()
cumulated_volume_subquery = session.query(filtered_requests_subquery.c.id)\
.join(cumulated_volume_subquery, and_(filtered_requests_subquery.c.dataset_name == cumulated_volume_subquery.c.name, filtered_requests_subquery.c.dataset_scope == cumulated_volume_subquery.c.scope))\
.filter(cumulated_volume_subquery.c.cum_volume <= volume - sum_volume_active_subquery.c.sum_bytes)\
.subquery()
amount_released_requests = session.query(models.Request) \
.filter(models.Request.id.in_(cumulated_volume_subquery)) \
.update({models.Request.state: RequestState.QUEUED}, synchronize_session=False)
return amount_released_requests
@read_session
def create_base_query_grouped_fifo(rse_id, filter_by_rse='destination', session=None):
"""
Build the sqlalchemy queries to filter relevant requests and to group them in datasets.
Group requests either by same destination RSE or source RSE.
:param rse_id: The RSE id.
:param filter_by_rse: Decide whether to filter by transfer destination or source RSE (`destination`, `source`).
:param session: The database session.
"""
# query DIDs that are attached to a collection and add a column indicating the order of attachment in case of mulitple attachments
attachment_order_subquery = session.query(models.DataIdentifierAssociation.child_name, models.DataIdentifierAssociation.child_scope, models.DataIdentifierAssociation.name, models.DataIdentifierAssociation.scope,
func.row_number().over(partition_by=(models.DataIdentifierAssociation.child_name, models.DataIdentifierAssociation.child_scope),
order_by=models.DataIdentifierAssociation.created_at).label('order_of_attachment'))\
.subquery()
# query transfer requests and join with according datasets
filtered_requests_subquery = None
grouped_requests_subquery = None
dialect = session.bind.dialect.name
if dialect == 'mysql' or dialect == 'sqlite':
filtered_requests_subquery = session.query(models.Request.id.label('id'),
func.ifnull(attachment_order_subquery.c.name, models.Request.name).label('dataset_name'),
func.ifnull(attachment_order_subquery.c.scope, models.Request.scope).label('dataset_scope'))
combined_attached_unattached_requests = session.query(func.ifnull(attachment_order_subquery.c.scope, models.Request.scope).label('scope'),
func.ifnull(attachment_order_subquery.c.name, models.Request.name).label('name'),
models.Request.bytes,
models.Request.requested_at)
elif dialect == 'postgresql':
filtered_requests_subquery = session.query(models.Request.id.label('id'),
func.coalesce(attachment_order_subquery.c.name, models.Request.name).label('dataset_name'),
func.coalesce(attachment_order_subquery.c.scope, models.Request.scope).label('dataset_scope'))
combined_attached_unattached_requests = session.query(func.coalesce(attachment_order_subquery.c.scope, models.Request.scope).label('scope'),
func.coalesce(attachment_order_subquery.c.name, models.Request.name).label('name'),
models.Request.bytes,
models.Request.requested_at)