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# coding: utf-8
#
# Copyright © Cloud Linux GmbH & Cloud Linux Software, Inc 2010-2019 All Rights Reserved
#
# Licensed under CLOUD LINUX LICENSE AGREEMENT
# http://cloudlinux.com/docs/LICENSE.TXT
from typing import Dict, Optional, Tuple, Union # NOQA
from cllimitslib_v2 import LimitsDataStorage, DEFAULTS # NOQA
from cllimitslib_v2.lve_storage import (
Package, User, Reseller, OWN_SOURCE, RESELLER_SOURCE, # NOQA
PACKAGE_SOURCE, GLOBAL_SOURCE
)
from .base import BaseValidator, ENTITY_USER, ENTITY_PACKAGE, ENTITY_RESELLER, ENTITY_DEFAULTS
class EpNprocValidator(BaseValidator):
def __init__(self, _limits_data_storage=None):
# type: (LimitsDataStorage) -> None
super().__init__(_limits_data_storage=_limits_data_storage)
# difference beetween nproc limit and ep for normal server work
# see LU-919
self.diff_nproc_and_ep = 15
@property
def message_dict(self):
# type: () -> Dict
common_msg = (
f'NPROC limit must be greater than EP + {self.diff_nproc_and_ep} limit, because '
'number of processes and threads within LVE includes '
'also Apache processes/threads, SSH sessions and etc, '
'which enter into LVE.'
)
message_dict = dict(self._message_dict)
message_dict['common_msg'] = common_msg
return message_dict
def _ep_and_nproc_is_valid(self, ep, nproc):
# type: (int, int) -> bool
if nproc == 0 or ep == 0:
result = True
else:
result = nproc >= ep + self.diff_nproc_and_ep
return result
def _validate_nproc_and_ep_for_user(self, user, ep, nproc, has_input_limits):
# type: (User, Union[int, None], Union[int, None], bool) -> Tuple[bool, Dict]
"""
:param has_input_limits: User has input limits, which will be set to it
"""
message_dict = self.message_dict
user_limits = self.limits_provider.get_user_limits(user)
ep = int(ep or user_limits.ep.value)
nproc = int(nproc or user_limits.nproc.value)
result = self._ep_and_nproc_is_valid(ep, nproc)
ep_source = user_limits.ep.source
nproc_source = user_limits.nproc.source
if has_input_limits:
message_dict['affected_entity'] = ENTITY_USER
message_dict['entity_id'] = user.id
elif OWN_SOURCE in (nproc_source, ep_source):
message_dict['affected_entity'] = ENTITY_USER
message_dict['entity_id'] = user.id
if ep_source != OWN_SOURCE:
inheritance_limit = 'ep'
elif nproc_source != OWN_SOURCE:
inheritance_limit = 'nproc'
else:
inheritance_limit = None
message_dict['specific_msg'] = None if inheritance_limit is None else (
f'{inheritance_limit.upper()} is inherited '
f'from {getattr(user_limits, inheritance_limit).source.capitalize()}'
)
elif OWN_SOURCE not in (nproc_source, ep_source) and nproc_source == ep_source:
message_dict['affected_entity'] = ep_source
if ep_source == PACKAGE_SOURCE:
message_dict['entity_id'] = user.package.name
elif ep_source == RESELLER_SOURCE:
message_dict['entity_id'] = user.reseller.name
elif ep_source == GLOBAL_SOURCE:
message_dict['entity_id'] = ENTITY_DEFAULTS
elif OWN_SOURCE not in (nproc_source, ep_source) and nproc_source != ep_source:
message_dict['affected_entity'] = ENTITY_USER
message_dict['entity_id'] = user.id
message_dict['specific_msg'] = (
'Both validated limits (EP, NPROC) inheritance '
f'from different sources: {ep_source} and {nproc_source}'
)
return result, message_dict
def _validate_nproc_and_ep_for_package(self, package, ep, nproc, has_input_limits):
# type: (Package, Union[int, None], Union[int, None], bool) -> Tuple[bool, Dict]
"""
:param has_input_limits: User has input limits, which will be set to it
"""
message_dict = self.message_dict
package_limits = self.limits_provider.get_package_limits(package)
ep = int(ep or package_limits.ep.value)
nproc = int(nproc or package_limits.nproc.value)
result = self._ep_and_nproc_is_valid(ep, nproc)
ep_source = package_limits.ep.source
nproc_source = package_limits.nproc.source
if has_input_limits:
message_dict['affected_entity'] = ENTITY_PACKAGE
message_dict['entity_id'] = package.name
elif OWN_SOURCE in (nproc_source, ep_source):
message_dict['affected_entity'] = ENTITY_PACKAGE
message_dict['entity_id'] = package.name
if ep_source != OWN_SOURCE:
inheritance_limit = 'ep'
elif nproc_source != OWN_SOURCE:
inheritance_limit = 'nproc'
else:
inheritance_limit = None
message_dict['specific_msg'] = None if inheritance_limit is None else (
f'{inheritance_limit.upper()} is inherited '
f'from {getattr(package_limits, inheritance_limit).source.capitalize()}'
)
elif OWN_SOURCE not in (nproc_source, ep_source) and nproc_source == ep_source:
message_dict['affected_entity'] = ep_source
if ep_source == RESELLER_SOURCE:
message_dict['entity_id'] = package.provider.name
elif ep_source == GLOBAL_SOURCE:
message_dict['entity_id'] = ENTITY_DEFAULTS
elif OWN_SOURCE not in (nproc_source, ep_source) and nproc_source != ep_source:
message_dict['affected_entity'] = ENTITY_PACKAGE
message_dict['entity_id'] = package.name
message_dict['specific_msg'] = (
'Both validated limits (EP, NPROC) inheritance '
f'from different sources: {ep_source} and {nproc_source}'
)
return result, message_dict
def _validate_nproc_and_ep_for_reseller(self, reseller, ep, nproc, has_input_limits):
# type: (Reseller, Union[int, None], Union[int, None], bool) -> Tuple[bool, Dict]
"""
:param has_input_limits: User has input limits, which will be set to it
"""
message_dict = self.message_dict
reseller_limits = self.limits_provider.get_reseller_limits(reseller)
ep = int(ep or reseller_limits.ep.value)
nproc = int(nproc or reseller_limits.nproc.value)
result = self._ep_and_nproc_is_valid(ep, nproc)
ep_source = reseller_limits.ep.source
nproc_source = reseller_limits.nproc.source
if has_input_limits:
message_dict['affected_entity'] = ENTITY_RESELLER
message_dict['entity_id'] = reseller.name
elif OWN_SOURCE in (nproc_source, ep_source):
message_dict['affected_entity'] = ENTITY_RESELLER
message_dict['entity_id'] = reseller.name
if ep_source != OWN_SOURCE:
inheritance_limit = 'ep'
elif nproc_source != OWN_SOURCE:
inheritance_limit = 'nproc'
else:
inheritance_limit = None
message_dict['specific_msg'] = None if inheritance_limit is None else (
f'{inheritance_limit.upper()} is inherited '
f'from {getattr(reseller_limits, inheritance_limit).source.capitalize()}'
)
return result, message_dict
def _validate_nproc_and_ep_for_defaults(self, reseller, ep, nproc, has_input_limits):
# type: (Union[Reseller, DEFAULTS], Union[int, None], Union[int, None], bool) -> Tuple[bool, Dict]
"""
:param has_input_limits: User has input limits, which will be set to it
"""
message_dict = self.message_dict
id_entity = reseller.name if isinstance(reseller, Reseller) else DEFAULTS
default_limits = self.limits_provider.get_defaults_limits(reseller)
ep = int(ep or default_limits.ep.value)
nproc = int(nproc or default_limits.nproc.value)
result = self._ep_and_nproc_is_valid(ep, nproc)
ep_source = default_limits.ep.source
nproc_source = default_limits.nproc.source
if has_input_limits:
message_dict['affected_entity'] = ENTITY_DEFAULTS
message_dict['entity_id'] = id_entity
elif OWN_SOURCE in (nproc_source, ep_source):
message_dict['affected_entity'] = ENTITY_DEFAULTS
message_dict['entity_id'] = id_entity
if ep_source != OWN_SOURCE:
inheritance_limit = 'ep'
elif nproc_source != OWN_SOURCE:
inheritance_limit = 'nproc'
else:
inheritance_limit = None
message_dict['specific_msg'] = None if inheritance_limit is None else (
f'{inheritance_limit.upper()} is inherited '
f'from {getattr(default_limits, inheritance_limit).source.capitalize()}'
)
return result, message_dict
def _validate(self, validated_entity, ep, nproc, has_input_limits, check_reseller_defaults=False):
# type: (Union[User, Reseller, Package, None], Optional[int], Optional[int], bool, bool) -> Tuple[bool, Dict]
message_dict = self.message_dict
result = True
if isinstance(validated_entity, User):
result, message_dict = self._validate_nproc_and_ep_for_user(
validated_entity,
ep,
nproc,
has_input_limits
)
elif isinstance(validated_entity, Package):
result, message_dict = self._validate_nproc_and_ep_for_package(
validated_entity,
ep,
nproc,
has_input_limits
)
elif isinstance(validated_entity, Reseller) and not check_reseller_defaults:
# we validate reseller limits
result, message_dict = self._validate_nproc_and_ep_for_reseller(
validated_entity,
ep,
nproc,
has_input_limits
)
elif isinstance(validated_entity, Reseller) and check_reseller_defaults or validated_entity == DEFAULTS:
# we validate default limits (include reseller defaults)
result, message_dict = self._validate_nproc_and_ep_for_defaults(
validated_entity,
ep,
nproc,
has_input_limits
)
return result, message_dict
def validate_existing_limits(self, validated_entity, check_reseller_defaults=False):
# type: (Union[User, Reseller, Package, None], bool) -> Tuple[bool, Dict]
"""
Validate limits which already are recorded in ve.cfg
"""
result, message_dict = self._validate(validated_entity, None, None, False, check_reseller_defaults)
return result, message_dict
def validate_input_limits(self, validated_entity, input_limits, check_reseller_defaults=False):
# type: (Union[User, Reseller, Package, None], Dict, bool) -> Tuple[bool, Dict]
"""
Validate limits which we want to set
"""
message_dict = self.message_dict
nproc = input_limits.get('nproc', None)
ep = input_limits.get('ep', None)
# if input_limits has no ep and nproc we set has_settable_limits to None
# It means nothing to validate
has_input_limits = nproc is not None or ep is not None
# We skip check if nproc is unlimited or input limits don't have ep and nproc values
if nproc == 0 or not has_input_limits:
result = True
else:
result, message_dict = self._validate(validated_entity, ep, nproc,
has_input_limits, check_reseller_defaults)
return result, message_dict
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