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Viewing File: cl_packages_arg_parse.py
# -*- coding: utf-8 -*-
# Command line arguments parser for cloudlinux-packages utility
# cloudlinux-packages Utility to control lvectl packages
#
# 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 docopt import DocoptExit, docopt
from schema import Schema, And, Or, Use, SchemaError
from clcommon.cpapi import is_panel_feature_supported
from clcommon.features import Feature
PROG_NAME = "cloudlinux-packages"
GET_USAGE_CMDS = (
"[get] [--json] [--provider <str> | --for-reseller <str>] [--package <str>] "
"[--limits=<keys>] [--human-readable-numbers]",
)
SET_USAGE_NO_LVE_CMDS = (
"set [--json] (--provider <str> --package <str>) [--inodes <N,M>]",
"set [--json] (--for-reseller <str> --package <str>) [--inodes <N,M>]",
)
SET_USAGE_LVE_CMDS = (
"set [--json] (--provider <str> --package <str>) "
"[--speed <str> --pmem <str> --vmem <str> --nproc <str> --maxEntryProcs <str> "
"--io <str> --iops <str> --inodes <N,M> --mysql-cpu <int> --mysql-io <int>]",
"set [--json] (--for-reseller <str> --package <str>) "
"[--speed <str> --pmem <str> --vmem <str> --nproc <str> --maxEntryProcs <str> "
"--io <str> --iops <str> --inodes <N,M>]",
)
USAGE_TEMPLATE = """
Usage:
{get_usage}
{set_usage}
{prog_name} (-h | --help)
""".strip()
LIMITS_OPTIONS_LVE = """
--speed <str> Limit CPU usage for LVE.
--pmem <str> Limit physical memory usage for applications inside LVE.
--vmem <str> Limit virtual memory for applications inside LVE.
--nproc <str> Limit number of processes for LVE.
--maxEntryProcs <str> Limit number of entry processes for LVE.
--io <str> Define io limits for LVE (KB/s).
--iops <str> Limit io per second for LVE.
--mysql-cpu <int> Set MySQL governor CPU limit (pct).
--mysql-io <int> Set MySQL governor IO limit (read + write MB/s)
""".rstrip() # strip only right side to preserve the newline symbol
OPTIONS_TEMPLATE = """
Options:
--json Return data in JSON format.
--provider <str> Show data only for specific reseller.
--for-reseller <str> Show data only for specific reseller.
--package <str> Show data only for specific package. Use only with --provider
WARNING: package name must be unicode-escaped string
--limits <keys> Available keys: speed, nproc, pmem, vmem, maxEntryProcs, io, iops, inodes
--human-readable-numbers Return PMEM and VMEM limits in KBytes, MBytes or GBytes {limit_options}
--inodes <N,M> Set inode limits. N - soft, M - hard.
-h, --help Show this help message and exit
""".strip()
DOCSTRING_TEMPLATE = """Utility to get/set any Cloudlinux package limits
{usage}
{options}
"""
def _limits_keys_validate(keys):
"""
Validate limits keys
"""
avialable_keys_list = ["inodes"]
if is_panel_feature_supported(Feature.LVE):
avialable_keys_list += [
"speed", "nproc", "pmem", "vmem", "maxEntryProcs", "io", "iops", "mysql-cpu", "mysql-io"
]
return len(set(keys.split(",")) - set(avialable_keys_list)) == 0
def _get_commands_usage_template(commands):
"""
Get usage for commands
"""
return "\n ".join(f"{{prog_name}} {cmd}" for cmd in commands).strip()
SCHEMA_NO_LVE = {
"get": bool,
"set": bool,
"--json": And(bool, lambda x: x, error="use --json option, other modes currently unsupported"),
"--provider": Or(None, str),
"--for-reseller": Or(None, str),
"--package": Or(None, str),
"--limits": Or(None, _limits_keys_validate, error="Invalid keys"),
"--inodes": Or(None, str),
"--help": bool,
"--human-readable-numbers": bool,
}
SCHEMA_LVE = SCHEMA_NO_LVE | {
"--speed": Or(None, str),
"--pmem": Or(None, str),
"--vmem": Or(None, str),
"--nproc": Or(None, str),
"--maxEntryProcs": Or(None, str),
"--io": Or(None, str),
"--iops": Or(None, str),
"--mysql-cpu": Or(None, And(Use(int), lambda x: x >= 0),
error="--mysql-cpu must be non-negative integer value"),
"--mysql-io": Or(None, And(Use(int), lambda x: x >= 0),
error="--mysql-io must be non-negative integer value"),
}
def parse_cloudlinux_packages_opts(argv, _is_json_need=False):
"""
Parse arguments for cloudlinux-packages command
:param argv: sys.argv
:param _is_json_need: sys.argv contains --json key
:return cortege: (error_flag, s_message)
"""
docstring = DOCSTRING_TEMPLATE.format(
usage=USAGE_TEMPLATE.format(
get_usage=_get_commands_usage_template(GET_USAGE_CMDS),
set_usage=_get_commands_usage_template(
SET_USAGE_LVE_CMDS if is_panel_feature_supported(Feature.LVE) else SET_USAGE_NO_LVE_CMDS,
),
prog_name=PROG_NAME,
),
options=OPTIONS_TEMPLATE.format(
limit_options=LIMITS_OPTIONS_LVE if is_panel_feature_supported(Feature.LVE) else "",
)
).format(prog_name=PROG_NAME)
try:
args = docopt(docstring, argv)
except DocoptExit:
s_error_string = 'ERROR: Invalid parameter passed'
if not _is_json_need:
s_error_string += "\n\n" + docstring
return False, s_error_string
# get mode by default
if not args["get"] and not args["set"]:
args["get"] = True
if args['--for-reseller']:
# --for-reseller option found, convert it to --provider
args['--provider'] = args['--for-reseller']
schema_dict = SCHEMA_LVE if is_panel_feature_supported(Feature.LVE) else SCHEMA_NO_LVE
s = Schema(schema_dict)
try:
args = s.validate(args)
status = True
except SchemaError as e:
args = str(e)
status = False
return status, args
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