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Editing: persistors.py
# 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 import grp import json import logging import os import pwd import time from clcommon.utils import ExternalProgramFailed, run_command from lvestats.core.plugin import LveStatsPlugin from lvestats.lib.commons.func import atomic_write_csv, atomic_write_str, deserialize_lve_id from lvestats.lib.commons.sizeutil import mempages_to_bytes __author__ = 'iseletsk' class FileSaver(LveStatsPlugin): def __init__(self, fname='/var/lve/info'): """:type fname: str""" self.fname = fname self.log = logging.getLogger('plugin.file_saver') def write(self, output): """ :type output: list :rtype: None """ try: atomic_write_csv(self.fname, output) except OSError as e: self.log.error('Error during saving the "%s" file: %s', self.fname, e) @staticmethod def compare_limits(lve_stat, lve_usage, lve_version): """ :type lve_usage: lvestats.plugins.generic.aggregators.AggregatedLveUsage :type lve_stat: lvestat.LVEStat :type lve_version: int """ res1 = ( lve_stat.lep != lve_usage.lep or lve_stat.cpu != lve_usage.lcpu or lve_stat.lmem != lve_usage.lmem or lve_stat.lmemphy != lve_usage.lmemphy or lve_stat.lnproc != lve_usage.lnproc or lve_stat.io * 1024 != lve_usage.io ) if lve_version > 6: res2 = lve_stat.liops != lve_usage.liops else: res2 = False return res1 or res2 def execute(self, lve_data): """:type lve_data: dict""" lve_version = lve_data['LVE_VERSION'] usages = lve_data.get('lve_usage_5s', {}) new = lve_data['stats'] output_rows = [] for lve_id, v in usages.items(): data = [] data.extend( [ lve_id, # 0 - id int(v.mep), # 1 - mep int(v.lep), # 2 - lep int(v.cpu_usage), # 3 - cpu_usage int(v.lcpu), # 4 - lcpu int(v.mem_usage), # 5 - mem_usage int(v.lmem), # 6 - lmem int(v.mem_fault), # 7 - mem_fault int(v.mep_fault), # 8 - mep_fault int(v.lmemphy), # 9 - lmemphy int(v.memphy), # 10 - memphy int(v.memphy_fault), # 11 - memphy_fault int(v.lnproc), # 12 - lnproc int(v.nproc), # 13 - nproc int(v.nproc_fault), # 14 - nproc_fault 0, # 15 - lcpuw (deprecated not used) int(v.io_usage) // 1024, # 16 - io_usage int(v.io) // 1024, ] ) # 17 - io_limit if lve_version >= 8: data.extend( [ int(v.liops), # 18 - liops int(v.iops), ] ) # 19 - iops data.extend([''] * (20 - len(data))) # Mandatory fields for any version data.append(v.cpu_fault) # 20 - cpu_fault data.append(v.iops_fault) # 21 - iops_fault data.append(v.io_fault) # 22 - io_fault output_rows.append(data) for lve_id, new_lvestat in new.items(): lve_id, is_reseller = deserialize_lve_id(lve_id) if is_reseller: # TODO: need to create some other file format; lvp_id is not supported for now; continue if usages and lve_id not in usages: # limits are NOT equal to defaults ? if 0 not in usages: # no defaults? self.log.warning("No defaults collected to compare with, skipping") continue # noinspection PyTypeChecker if self.compare_limits(lve_stat=new_lvestat, lve_usage=usages[0], lve_version=lve_version): data = [] data.extend( [ lve_id, # 0 - id 0, # 1 - mep int(new_lvestat.lep), # 2 - lep 0, # 3 - cpu_usage int(new_lvestat.cpu), # 4 - lcpu 0, # 5 - mem_usage int(new_lvestat.lmem), # 6 - lmem 0, # 7 - mem_fault 0, # 8 - mep_fault int(new_lvestat.lmemphy), # 9 - lmemphy 0, # 10 - memphy 0, # 11 - memphy_fault int(new_lvestat.lnproc), # 12 - lnproc 0, # 13 - nproc 0, # 14 - nproc_fault 0, # 15 - lcpuw (deprecated not used) 0, # 16 - io_usage int(new_lvestat.io), ] ) # 17 - io_limit if lve_version >= 8: data.extend( [ int(new_lvestat.liops), # 18 - liops 0, ] ) # 19 - iops data.extend([''] * (20 - len(data))) # Mandatory fields for any version data.append(0) # 20 - cpu_fault data.append(0) # 21 - iops_fault data.append(0) # 22 - io_fault output_rows.append(data) self.write(output_rows) class MySQLTopFileSaver(LveStatsPlugin): dbtop = "/usr/sbin/dbtop" def __init__(self, fname='/var/lve/cloudlinux_dbtop.json'): self.fname = fname self.touch_fname = '/var/lve/governor.ts' self.log = logging.getLogger('plugin.cloudlinux_dbtop_file_saver') self._dbtop_exist = self._check_dbtop_exist() if self._dbtop_exist: # create touch file if dbtop exist self._create_touch_file() def __del__(self): """ Try delete created files """ self._try_unlink_file(self.touch_fname) self._try_unlink_file(self.fname) def _try_unlink_file(self, fname): """ Try delete file; push warning to log if wrong :param fname: path to file """ self.log.debug('Delete %s file', fname) try: os.unlink(fname) except OSError as e: if e.errno != 2: # error number 2 - No such file or directory self.log.warning('Can\'t delete %s file; %s', fname, e) except SystemError as e: self.log.warning('Can\'t delete %s file; %s', fname, e) @staticmethod def _convert_to_bytes(value): """ :type value: str :rtype: int """ try: return int(value) except ValueError: if value[-1] in ("k", "K", "kb", "Kb"): return int(value[:-1]) * 1024 elif value[-1] in ("m", "M", "mb", "Mb"): return int(value[:-1]) * 1024 * 1024 elif value[-1] in ("g", "G", "gb", "Gb"): return int(value[:-1]) * 1024 * 1024 * 1024 def _create_touch_file(self): """ Create file to touching; file owned by nobody and accessible to change everyone :return: """ self.log.debug('Create %s file', self.touch_fname) try: uid = pwd.getpwnam("nobody").pw_uid try: gid = grp.getgrnam('nobody').gr_gid except KeyError: # Ubuntu doesn't have "nobody" group by default so let's try "nogroup" # But "nobody" on Ubuntu can be added by 3rd party software e.g. cPanel gid = grp.getgrnam('nogroup').gr_gid with open(self.touch_fname, 'w', encoding='utf-8'): pass os.chown(self.touch_fname, uid, gid) os.chmod(self.touch_fname, 0o644) except (IOError, OSError) as e: self.log.error("Can't create %s file; %s", self.touch_fname, str(e)) def _parse_dbtop_cause(self, value): """ :rtype: (str, int) :type value: str """ cause_of_restrict = "-" time_of_restrict = 0 if value in ("-", ""): return cause_of_restrict, time_of_restrict if "cpu" in value: cause_of_restrict = "cpu" elif "read" in value: cause_of_restrict = "read" elif "write" in value: cause_of_restrict = "write" else: cause_of_restrict = "unknown" try: time_of_restrict = int(value.split("/")[-1]) except (KeyError, ValueError): self.log.error("could not parse cause string: %s", value) return cause_of_restrict, time_of_restrict def _check_dbtop_exist(self): """ Check if dbtop util exist :return bool: True if exist """ self.log.debug('Check exist %s file', self.dbtop) return os.path.exists(self.dbtop) def get_dbtop_info(self): """ Try obtain and parse data from dtop -c output :rtype: dict """ try: dbtop_output = self._get_dbtop_output() except ExternalProgramFailed as e: if "Can't connect to socket" not in str(e): self.log.error("dbtop execution is failed: %s", str(e)) return {} result = {} for output in dbtop_output[1:]: try: user, cpu, read, write, cause = output.split() except ValueError as e: self.log.error("Can't unpack output: %s\n%s", str(output), str(e)) continue cause_of_restrict, time_of_restrict = self._parse_dbtop_cause(cause) result[user] = { "cpu": int(cpu.split("/")[0]), "io": self._convert_to_bytes(read.split("/")[0]) + self._convert_to_bytes(write.split("/")[0]), "cause_of_restrict": cause_of_restrict, "time_of_restrict": time_of_restrict, } return result def _get_dbtop_output(self): """ Run dbtop -c and split output :return list[str]: """ cmd = [self.dbtop, "-c"] self.log.debug('Run "%s" command', ' '.join(cmd)) dbtop_output = run_command(cmd) return dbtop_output.strip().split("\n") def _output(self, result): """ Dump datat to file as json string :param result dict: data to need dump """ self.log.debug('Dump data to %s file', self.fname) json_result = json.dumps(result) try: atomic_write_str(self.fname, json_result) except (IOError, OSError) as e: self.log.error('Error during saving the "%s" file: %s', self.fname, e) def _need_dump(self): """ Check needed dump data to file. If touch file exist and was touched last 60 seconds we need dump data :return bool: """ return os.path.exists(self.touch_fname) and time.time() - os.stat(self.touch_fname).st_mtime <= 60 def execute(self, lve_data): if self._dbtop_exist and self._need_dump(): self._output({"dbgov_data": self.get_dbtop_info()}) class CloudLinuxTopFileSaver(LveStatsPlugin): def __init__(self, fname='/var/lve/cloudlinux_top.json'): self.fname = fname self.log = logging.getLogger('plugin.cloudlinux_top_file_saver') def _output(self, result): json_result = json.dumps(result) try: atomic_write_str(self.fname, json_result) except (IOError, OSError) as e: self.log.error('Error during saving the "%s" file: %s', self.fname, e) def execute(self, lve_data): lve_version = lve_data['LVE_VERSION'] usages = lve_data.get('lve_usage_5s', {}) users, resellers = [], [] for uid, usage in list(usages.items()): lve_id, is_reseller = deserialize_lve_id(uid) if lve_id > 0: user = { "id": uid, "usage": { "ep": usage.mep, # Set CPU load measurement unit as % of one CPU core "cpu": {"all": usage.cpu_usage / 100.0}, "io": {"all": usage.io_usage}, "mem": mempages_to_bytes(usage.memphy), "pno": usage.nproc, }, "limit": { "ep": usage.lep, # Set CPU limit measurement unit as % of one CPU core "cpu": {"all": usage.lcpu / 100.0}, "io": {"all": usage.io}, "mem": mempages_to_bytes(usage.lmemphy), "pno": usage.lnproc, }, } if lve_version >= 8: user["usage"]["iops"] = usage.iops user["limit"]["iops"] = usage.liops if is_reseller: resellers.append(user) else: users.append(user) self._output({"users": users, "resellers": resellers})
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