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Current File : /opt/cloudlinux/venv/lib64/python3.11/site-packages/lvestats/lib/info/lveinfomain.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 csv
import logging
import os
import sys

from sqlalchemy.exc import OperationalError, ProgrammingError

import lvestats
import lvestats.lib.commons.decorators
from lvestats.lib import uidconverter
from lvestats.lib.commons import dateutil
from lvestats.lib.commons.func import get_ascii_table
from lvestats.lib.commons.logsetup import setup_logging
from lvestats.lib.config import ConfigError
from lvestats.lib.config import read_config, is_normalized_user_cpu
from lvestats.lib.dbengine import make_db_engine, MakeDbException
from lvestats.lib.jsonhandler import prepare_data_json
from lvestats.lib.lveinfolib import OutputFormatter, HistoryShowUnion, \
    servers_info, get_supported_columns
from lvestats.lib.lveinfolib_gov import HistoryShowDBGov
from lvestats.lib.parsers.lveinfoargparse import lveinfo_parser, dbgov_parser, DEF_BLANK_VALUE

log = setup_logging({}, caller_name='lveinfo', file_level=logging.ERROR, console_level=logging.ERROR)

NAME = 'lveinfo'


def _convert_to_dict(rows, fields):
    """
    Convert rows and its headers name to list dictionaries
    :param list|tuple|generator rows:
    :param list|tuple fields:
    :return list:
    """
    return [dict(zip(fields, row_)) for row_ in rows]


def save_csv(rows, fields, stream):
    """
    Save rows and its headers to stream
    :param list|tuple|generator rows:
    :param list|tuple fields: first csv file line
    :param file stream: stream to write data
    :return:
    """
    csv_writer = csv.writer(stream)
    csv_writer.writerow(fields)
    csv_writer.writerows(rows)


def is_cpu_output_normalizable(namespace):
    """
    Normalization is done only if namespace.style == 'user', user id is specified, and either
    csv or json output selected

    :param namespace: command line options/settings
    :return: True if normalizagin of CPU should be done
    """
    return namespace.style == "user" and (namespace.csv or namespace.json) and namespace.id


def normalize_cpu(rows, fields):
    """
    Normalize CPU data, making limit always be 100%. This is used to show end user usage relative to their limits
    :param list rows: rows with data
    :param list|tuple fields: columns name
    :return list: normalized rows
    """
    if 'lCPU' in fields:
        lcpu_index = fields.index('lCPU')
    else:
        return rows

    if 'aCPU' in fields:
        acpuindex = fields.index('aCPU')
    else:
        acpuindex = -1

    if 'mCPU' in fields:
        mcpuindex = fields.index('mCPU')
    else:
        mcpuindex = -1

    new_rows = []
    for _prow in rows:
        _row = list(_prow)
        new_rows.append(_row)
        lcpu = float(_row[lcpu_index])
        _row[lcpu_index] = 100.
        if acpuindex != -1:
            _row[acpuindex] = float(_row[acpuindex]) / lcpu * 100
        if mcpuindex != -1:
            _row[mcpuindex] = float(_row[mcpuindex]) / lcpu * 100
    return new_rows


def main_(config, dbengine=None, argv_=None):
    if dbengine is None:
        try:
            dbengine = make_db_engine(cfg=config)
        except MakeDbException as e:
            log.error(str(e))
            return

    if argv_ is None:
        _args = sys.argv[1:]
    else:
        _args = list(argv_)

    if '--dbgov' in _args:
        namespace, output_formatted, rows = dbgov_main(config, _args, dbengine)
    else:
        parser = lveinfo_parser(name=NAME, ver=lvestats.__version__, config=config, dbengine=dbengine)
        namespace = parser.parse_args(_args)  # parsing command line

        if namespace.servers_info:
            output_formatted = OutputFormatter(('Server', 'LVE version'))
            rows = servers_info(dbengine)
        else:
            output_formatted, rows = lvestats_main(dbengine, namespace, parser)

    output_formatted.set_rows(rows)

    # return values in bytes for json and csv
    # otherwise, return bytes
    if namespace.csv or namespace.json:
        output_formatted.add_order(fields=['aIO', 'mIO', 'lIO'], order=lambda x_: round(x_ / 1024., 3))

    if namespace.csv:
        save_csv(output_formatted, output_formatted.get_fields(), stream=namespace.csv)
    elif namespace.json:
        return prepare_data_json(_convert_to_dict(output_formatted, output_formatted.fields))
    else:
        # make ascii-table output human readable
        output_formatted.add_order(fields=['aVMem', 'mVMem', 'lVMem', 'aPMem', 'mPMem', 'lPMem', 'aIO', 'mIO', 'lIO'],
                                   order='bytes')
        output_formatted.add_order(
            fields=['aEP', 'mEP', 'lEP', 'EPf', 'VMemF', 'CPUf', 'aNproc', 'mNproc', 'lNproc',
                    'PMemF', 'NprocF', 'IOf', 'aIOPS', 'mIOPS', 'lIOPS', 'IOPSf'], order='powers_of_1000')
        output_formatted.add_order(['uCPU', 'uEP', 'uVMem', 'uPMem', 'uIO', 'uNproc', 'uIOPS'], 'percentage')

        return get_ascii_table(output_formatted, fields=output_formatted.fields)


def lvestats_main(dbengine, namespace, parser):
    output_formatted = OutputFormatter(
        namespace.show_columns,
        # convert From To %m-%d %H:%M (for example "12-29 09:46")
        orders=[(['From', 'To'], 'datetime'), (['From', 'To'], 'strftime')])
    output_formatted.add_order(fields=['aCPU', 'mCPU', 'lCPU', 'aIO', 'mIO', 'lIO'],
                               order=lambda x_: int(round(x_)))
    utc_from = dateutil.local_to_gm(getattr(namespace, 'from'))
    utc_to = dateutil.local_to_gm(namespace.to)
    if os.environ.get('LVEINFODEBUG'):
        log_ = setup_logging({}, caller_name='lveinfo', console_level=logging.DEBUG)
    else:
        log_ = None
    history_show = HistoryShowUnion(
        dbengine=dbengine,
        period_from=utc_from,
        period_to=utc_to,
        uid=namespace.id,
        show_columns=output_formatted.get_fields(),
        server_id=namespace.server_id,
        time_unit=namespace.time_unit,
        limit=namespace.limit,
        by_usage=namespace.by_usage,
        by_usage_percentage=namespace.percentage / 100.,
        by_fault=namespace.by_fault,
        threshold=namespace.threshold,
        order_by=namespace.order_by,
        log=log_ or log)
    history_show.set_normalised_output()

    if namespace.time_unit == -1:  # using dynamic time-unit
        rows = history_show.proceed_dyn_time_unit()
    else:
        rows = history_show.proceed()
    if ((namespace.user or namespace.reseller_name)
            and namespace.display_username):
        output_formatted.add_order(
            ['ID'], lambda x: namespace.user or namespace.reseller_name)
    elif namespace.display_username:
        # try convert user id to user name
        output_formatted.add_order(
            ['ID'], lambda x: uidconverter.uid_to_username(
                x, parser.get_default('server_id'),
                namespace.server_id, dbengine) or x)

    # replace unsupported columns item to blank-value
    supported_columns_ = get_supported_columns(lve_version=parser.lve_version)
    all_columns = get_supported_columns()
    unsupported_columns = set(all_columns).difference(set(supported_columns_))
    if unsupported_columns:
        output_formatted.add_order(
            fields=unsupported_columns,
            order=lambda _: DEF_BLANK_VALUE if namespace.blank_value is None else namespace.blank_value)
    if is_normalized_user_cpu() and is_cpu_output_normalizable(namespace):
        rows = normalize_cpu(rows, history_show.show_columns)
    return output_formatted, rows


def dbgov_main(config, _args, dbengine):
    _args.remove('--dbgov')
    parser = dbgov_parser(config=config, dbengine=dbengine)
    namespace = parser.parse_args(_args)  # parsing command line
    output_formatted = OutputFormatter(
        fields=namespace.format,
        orders=[
            (['FROM', 'TO'], 'datetime'),
            (['FROM', 'TO'], lambda dt: OutputFormatter.strftime(
                dt, '%m-%d %H:%M')),
            (['TS'], 'datetime'),
            (['TS'], lambda dt: OutputFormatter.strftime(
                dt, '%m-%d %H:%M:%S')),
            (['CPU'], lambda x: 0 if x < 0.001 else x),
            (['READ', 'WRITE'], lambda x: 0 if x < 0.001 else x),
        ]
    )
    utc_from = dateutil.local_to_gm(getattr(namespace, 'from'))
    utc_to = dateutil.local_to_gm(namespace.to)

    history_show = HistoryShowDBGov(
        dbengine=dbengine, period_from=utc_from, period_to=utc_to,
        uid=namespace.id, show_columns=output_formatted.get_fields(),
        server_id=namespace.server_id, order_by=namespace.order_by,
        limit=namespace.limit, cfg=config, time_unit=namespace.time_unit,
        by_usage=namespace.by_usage, by_usage_percentage=namespace.percentage / 100.
    )
    if namespace.time_unit == -1:
        rows = history_show.history_dbgov_show_dynamic()
    else:
        rows = history_show.history_dbgov_show()
    return namespace, output_formatted, rows


@lvestats.lib.commons.decorators.no_sigpipe
def main(config, *args, **kwargs):
    try:
        str_ = main_(config, *args, **kwargs)
    except (OperationalError, ProgrammingError) as ex:
        log.error(str(ex))
    else:
        if str_:
            print(str_)


if __name__ == '__main__':
    try:
        main(read_config())
    except ConfigError as ce:
        ce.log_and_exit()

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