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Viewing File: lvectl_packages_lib.py
# -*- coding: utf-8 -*-
# lvectl_packages_lib.py - module for interfacing with lvectl utility for get/set package LVE limits
#
# 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
import json
from lveapi import NameMap
from lvectllib import lvp_list
from cllimits.lib import exec_utility
from cllimits.lib.utils import _convert_memory_value_to_adaptive_format
from cllimits import LvectlException
class LveCtlPackage:
def __init__(self):
self._lve_version = None
self._UTILITY_PATH = "/usr/sbin/lvectl"
# Panel packages limits list
# List item format:
# {
# "package": "Basic_16",
# "provider": "Reseller_Peter",
# "limits": { "vmem": 768, "pmem": 768, "ep": 25, "nproc": 50, "iops": 100, "speed": { "all": 50 },
# "io": { "all": 5 }, "inodes": { "soft": 100000, "hard": 200000 }
# }
self._packages_data_list = None
self._name_map = NameMap()
self._name_map.link_xml_node()
def _load_info(self, human_readable_numbers=False):
"""
Loads all package info from lvectl
:param human_readable_numbers: PMEM and VMEM limits in KBytes, MBytes or GBytes
:return: None
"""
# Do nothing, if data alreade present
if self._packages_data_list is not None:
return
# lvectl all-package-list --json
lvectl_cmd = ['all-package-list', '--json']
if not human_readable_numbers:
lvectl_cmd.append('--bytes')
ret_code, lvectl_data_str = exec_utility(self._UTILITY_PATH, lvectl_cmd)
loaded_json = json.loads(lvectl_data_str)
if ret_code != 0:
raise LvectlException(loaded_json['msg'])
json_data = loaded_json['data']
self._packages_data_list = []
active_resellers = set(self._name_map.get_name(uid) for uid in lvp_list())
for package_data in json_data:
reseller_name = package_data['RESELLER']
if reseller_name in ['N/A']:
reseller_name = 'root'
package_name = package_data['ID']
# Build limits dictionary
package_limits = {}
package_limits['speed'] = int(package_data['SPEED'])
package_limits['vmem'] = _convert_memory_value_to_adaptive_format(
package_data['VMEM'],
human_readable_numbers
)
if 'PMEM' in package_data:
package_limits['pmem'] = _convert_memory_value_to_adaptive_format(
package_data['PMEM'],
human_readable_numbers
)
package_limits['ep'] = int(package_data['EP'])
if 'NPROC' in package_data:
package_limits['nproc'] = int(package_data['NPROC'])
package_limits['io'] = {'all': int(package_data['IO'])}
if 'IOPS' in package_data:
package_limits['iops'] = int(package_data['IOPS'])
# LU-505: add reseller status: either enabled or disabled reseller limits
if 'provider' in ('root', ''):
enabledLimits = False
else:
enabledLimits = reseller_name in active_resellers
package_result_dict = {
'package': package_name,
'provider': reseller_name,
'limits': package_limits,
'enabledLimits': enabledLimits
}
self._packages_data_list.append(package_result_dict)
def get_reseller_package_limits(self, reseller_name_arg, package_name_arg, human_readable_numbers=False):
"""
Get limits for supplied reseller and package
:param reseller_name_arg: Reseller name. If None - all resellers
:param package_name_arg: Package name. Only if reseller name is provided. If None - all packages
:param human_readable_numbers: PMEM and VMEM limits in KBytes, MBytes or GBytes
:return: Data list
List item format:
{
"package": "Basic_16",
"provider": "Reseller_Peter",
"limits": { "vmem": 768, "pmem": 768, "ep": 25, "nproc": 50, "iops": 100, "speed": { "all": 50 },
"io": { "all": 5 }, "inodes": { "soft": 100000, "hard": 200000 }
}
"""
self._load_info(human_readable_numbers=human_readable_numbers)
if not reseller_name_arg:
# if reseller not provided - return all resellers
return self._packages_data_list
# Reseller name provided
out_data_list = []
for package_data in self._packages_data_list:
if package_data['provider'] == reseller_name_arg:
# Supplied reseller found
if package_name_arg:
# Package name is provided
if package_data['package'] == package_name_arg:
out_data_list.append(package_data)
else:
# No package name provided
out_data_list.append(package_data)
return out_data_list
def __set_error(self, param, package_name, err):
return {'message': "%(what)s set error for package=%(package)s%(error)s",
'context': {'what': param, 'package': package_name,
'error': f" [{err}]" if err else ""}}
def set_reseller_package_limits(self, reseller_name, package_name, limits_to_set):
"""
Sets limits for supplied package
:param reseller_name: Reseller name
:param package_name: Package name
:param limits_to_set: new LVE limits. Available keys: speed, vmem, pmem,
maxEntryProcs, io, nproc, iops
All other keys are ignoring. If some parameter absent on current LVE version
(for example pmem on LVE4), it will be ignored too.
:return: None
"""
# no limits passed
if not limits_to_set:
return
# Call lvectl package-set-ext package_name --reseller=reseller_name ....
# Form lvectl arguments list
lvectl_cmd = ['package-set-ext', package_name]
if reseller_name != 'root':
lvectl_cmd.append(f'--reseller={reseller_name}')
# Add limits from limits_to_set
for limit_name, limit_value in limits_to_set.items():
if limit_name == 'speed' and limit_value.isdigit():
limit_value = f'{limit_value}%'
lvectl_cmd.append(f'--{limit_name}={limit_value}')
ret_code, lvectl_stdout, lvectl_stderr = exec_utility(self._UTILITY_PATH, lvectl_cmd, True)
if ret_code != 0 or lvectl_stderr:
# Set limits error
raise LvectlException(self.__set_error('Limits', package_name, lvectl_stderr))
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