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Filename :
lvectl_packages_lib.py
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# -*- 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))