Added some oslo modules
Added some oslo modules which are needed for generating config samples and for running os commands. Re-synced oslo from b7ad6ddab8b1d61bf4f52ccaa461a9d68809747b which is master. Change-Id: I6e35ba1f0df007876f4dc25e7e2bd553986bfa8d
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307
ironic_python_agent/openstack/common/config/generator.py
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307
ironic_python_agent/openstack/common/config/generator.py
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# Copyright 2012 SINA Corporation
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# Copyright 2014 Cisco Systems, Inc.
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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#
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"""Extracts OpenStack config option info from module(s)."""
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from __future__ import print_function
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import argparse
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import imp
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import os
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import re
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import socket
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import sys
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import textwrap
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from oslo.config import cfg
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import six
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import stevedore.named
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from ironic_python_agent.openstack.common import gettextutils
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from ironic_python_agent.openstack.common import importutils
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gettextutils.install('ironic_python_agent')
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STROPT = "StrOpt"
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BOOLOPT = "BoolOpt"
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INTOPT = "IntOpt"
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FLOATOPT = "FloatOpt"
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LISTOPT = "ListOpt"
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DICTOPT = "DictOpt"
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MULTISTROPT = "MultiStrOpt"
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OPT_TYPES = {
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STROPT: 'string value',
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BOOLOPT: 'boolean value',
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INTOPT: 'integer value',
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FLOATOPT: 'floating point value',
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LISTOPT: 'list value',
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DICTOPT: 'dict value',
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MULTISTROPT: 'multi valued',
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}
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OPTION_REGEX = re.compile(r"(%s)" % "|".join([STROPT, BOOLOPT, INTOPT,
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FLOATOPT, LISTOPT, DICTOPT,
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MULTISTROPT]))
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PY_EXT = ".py"
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BASEDIR = os.path.abspath(os.path.join(os.path.dirname(__file__),
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"../../../../"))
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WORDWRAP_WIDTH = 60
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def raise_extension_exception(extmanager, ep, err):
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raise
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def generate(argv):
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parser = argparse.ArgumentParser(
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description='generate sample configuration file',
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)
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parser.add_argument('-m', dest='modules', action='append')
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parser.add_argument('-l', dest='libraries', action='append')
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parser.add_argument('srcfiles', nargs='*')
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parsed_args = parser.parse_args(argv)
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mods_by_pkg = dict()
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for filepath in parsed_args.srcfiles:
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pkg_name = filepath.split(os.sep)[1]
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mod_str = '.'.join(['.'.join(filepath.split(os.sep)[:-1]),
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os.path.basename(filepath).split('.')[0]])
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mods_by_pkg.setdefault(pkg_name, list()).append(mod_str)
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# NOTE(lzyeval): place top level modules before packages
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pkg_names = sorted(pkg for pkg in mods_by_pkg if pkg.endswith(PY_EXT))
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ext_names = sorted(pkg for pkg in mods_by_pkg if pkg not in pkg_names)
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pkg_names.extend(ext_names)
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# opts_by_group is a mapping of group name to an options list
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# The options list is a list of (module, options) tuples
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opts_by_group = {'DEFAULT': []}
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if parsed_args.modules:
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for module_name in parsed_args.modules:
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module = _import_module(module_name)
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if module:
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for group, opts in _list_opts(module):
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opts_by_group.setdefault(group, []).append((module_name,
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opts))
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# Look for entry points defined in libraries (or applications) for
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# option discovery, and include their return values in the output.
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#
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# Each entry point should be a function returning an iterable
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# of pairs with the group name (or None for the default group)
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# and the list of Opt instances for that group.
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if parsed_args.libraries:
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loader = stevedore.named.NamedExtensionManager(
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'oslo.config.opts',
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names=list(set(parsed_args.libraries)),
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invoke_on_load=False,
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on_load_failure_callback=raise_extension_exception
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)
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for ext in loader:
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for group, opts in ext.plugin():
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opt_list = opts_by_group.setdefault(group or 'DEFAULT', [])
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opt_list.append((ext.name, opts))
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for pkg_name in pkg_names:
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mods = mods_by_pkg.get(pkg_name)
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mods.sort()
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for mod_str in mods:
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if mod_str.endswith('.__init__'):
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mod_str = mod_str[:mod_str.rfind(".")]
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mod_obj = _import_module(mod_str)
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if not mod_obj:
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raise RuntimeError("Unable to import module %s" % mod_str)
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for group, opts in _list_opts(mod_obj):
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opts_by_group.setdefault(group, []).append((mod_str, opts))
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print_group_opts('DEFAULT', opts_by_group.pop('DEFAULT', []))
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for group in sorted(opts_by_group.keys()):
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print_group_opts(group, opts_by_group[group])
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def _import_module(mod_str):
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try:
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if mod_str.startswith('bin.'):
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imp.load_source(mod_str[4:], os.path.join('bin', mod_str[4:]))
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return sys.modules[mod_str[4:]]
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else:
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return importutils.import_module(mod_str)
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except Exception as e:
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sys.stderr.write("Error importing module %s: %s\n" % (mod_str, str(e)))
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return None
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def _is_in_group(opt, group):
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"Check if opt is in group."
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for value in group._opts.values():
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# NOTE(llu): Temporary workaround for bug #1262148, wait until
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# newly released oslo.config support '==' operator.
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if not(value['opt'] != opt):
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return True
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return False
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def _guess_groups(opt, mod_obj):
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# is it in the DEFAULT group?
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if _is_in_group(opt, cfg.CONF):
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return 'DEFAULT'
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# what other groups is it in?
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for value in cfg.CONF.values():
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if isinstance(value, cfg.CONF.GroupAttr):
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if _is_in_group(opt, value._group):
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return value._group.name
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raise RuntimeError(
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"Unable to find group for option %s, "
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"maybe it's defined twice in the same group?"
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% opt.name
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)
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def _list_opts(obj):
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def is_opt(o):
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return (isinstance(o, cfg.Opt) and
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not isinstance(o, cfg.SubCommandOpt))
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opts = list()
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for attr_str in dir(obj):
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attr_obj = getattr(obj, attr_str)
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if is_opt(attr_obj):
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opts.append(attr_obj)
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elif (isinstance(attr_obj, list) and
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all(map(lambda x: is_opt(x), attr_obj))):
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opts.extend(attr_obj)
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ret = {}
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for opt in opts:
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ret.setdefault(_guess_groups(opt, obj), []).append(opt)
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return ret.items()
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def print_group_opts(group, opts_by_module):
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print("[%s]" % group)
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print('')
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for mod, opts in opts_by_module:
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print('#')
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print('# Options defined in %s' % mod)
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print('#')
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print('')
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for opt in opts:
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_print_opt(opt)
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print('')
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def _get_my_ip():
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try:
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csock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
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csock.connect(('8.8.8.8', 80))
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(addr, port) = csock.getsockname()
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csock.close()
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return addr
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except socket.error:
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return None
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def _sanitize_default(name, value):
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"""Set up a reasonably sensible default for pybasedir, my_ip and host."""
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if value.startswith(sys.prefix):
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# NOTE(jd) Don't use os.path.join, because it is likely to think the
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# second part is an absolute pathname and therefore drop the first
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# part.
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value = os.path.normpath("/usr/" + value[len(sys.prefix):])
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elif value.startswith(BASEDIR):
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return value.replace(BASEDIR, '/usr/lib/python/site-packages')
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elif BASEDIR in value:
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return value.replace(BASEDIR, '')
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elif value == _get_my_ip():
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return '10.0.0.1'
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elif value in (socket.gethostname(), socket.getfqdn()) and 'host' in name:
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return 'ironic_python_agent'
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elif value.strip() != value:
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return '"%s"' % value
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return value
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def _print_opt(opt):
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opt_name, opt_default, opt_help = opt.dest, opt.default, opt.help
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if not opt_help:
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sys.stderr.write('WARNING: "%s" is missing help string.\n' % opt_name)
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opt_help = ""
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opt_type = None
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try:
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opt_type = OPTION_REGEX.search(str(type(opt))).group(0)
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except (ValueError, AttributeError) as err:
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sys.stderr.write("%s\n" % str(err))
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sys.exit(1)
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opt_help = u'%s (%s)' % (opt_help,
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OPT_TYPES[opt_type])
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print('#', "\n# ".join(textwrap.wrap(opt_help, WORDWRAP_WIDTH)))
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if opt.deprecated_opts:
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for deprecated_opt in opt.deprecated_opts:
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if deprecated_opt.name:
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deprecated_group = (deprecated_opt.group if
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deprecated_opt.group else "DEFAULT")
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print('# Deprecated group/name - [%s]/%s' %
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(deprecated_group,
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deprecated_opt.name))
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try:
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if opt_default is None:
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print('#%s=<None>' % opt_name)
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elif opt_type == STROPT:
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assert(isinstance(opt_default, six.string_types))
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print('#%s=%s' % (opt_name, _sanitize_default(opt_name,
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opt_default)))
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elif opt_type == BOOLOPT:
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assert(isinstance(opt_default, bool))
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print('#%s=%s' % (opt_name, str(opt_default).lower()))
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elif opt_type == INTOPT:
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assert(isinstance(opt_default, int) and
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not isinstance(opt_default, bool))
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print('#%s=%s' % (opt_name, opt_default))
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elif opt_type == FLOATOPT:
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assert(isinstance(opt_default, float))
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print('#%s=%s' % (opt_name, opt_default))
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elif opt_type == LISTOPT:
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assert(isinstance(opt_default, list))
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print('#%s=%s' % (opt_name, ','.join(opt_default)))
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elif opt_type == DICTOPT:
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assert(isinstance(opt_default, dict))
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opt_default_strlist = [str(key) + ':' + str(value)
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for (key, value) in opt_default.items()]
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print('#%s=%s' % (opt_name, ','.join(opt_default_strlist)))
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elif opt_type == MULTISTROPT:
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assert(isinstance(opt_default, list))
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if not opt_default:
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opt_default = ['']
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for default in opt_default:
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print('#%s=%s' % (opt_name, default))
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print('')
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except Exception:
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sys.stderr.write('Error in option "%s"\n' % opt_name)
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sys.exit(1)
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def main():
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generate(sys.argv[1:])
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if __name__ == '__main__':
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main()
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267
ironic_python_agent/openstack/common/processutils.py
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267
ironic_python_agent/openstack/common/processutils.py
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# Copyright 2011 OpenStack Foundation.
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""
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System-level utilities and helper functions.
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"""
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import errno
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import logging as stdlib_logging
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import os
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import random
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import shlex
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import signal
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from eventlet.green import subprocess
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from eventlet import greenthread
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import six
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from ironic_python_agent.openstack.common.gettextutils import _
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from ironic_python_agent.openstack.common import log as logging
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LOG = logging.getLogger(__name__)
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class InvalidArgumentError(Exception):
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def __init__(self, message=None):
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super(InvalidArgumentError, self).__init__(message)
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class UnknownArgumentError(Exception):
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def __init__(self, message=None):
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super(UnknownArgumentError, self).__init__(message)
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class ProcessExecutionError(Exception):
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def __init__(self, stdout=None, stderr=None, exit_code=None, cmd=None,
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description=None):
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self.exit_code = exit_code
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self.stderr = stderr
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self.stdout = stdout
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self.cmd = cmd
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self.description = description
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if description is None:
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description = _("Unexpected error while running command.")
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if exit_code is None:
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exit_code = '-'
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message = _('%(description)s\n'
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'Command: %(cmd)s\n'
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'Exit code: %(exit_code)s\n'
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'Stdout: %(stdout)r\n'
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'Stderr: %(stderr)r') % {'description': description,
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'cmd': cmd,
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'exit_code': exit_code,
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'stdout': stdout,
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'stderr': stderr}
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super(ProcessExecutionError, self).__init__(message)
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class NoRootWrapSpecified(Exception):
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def __init__(self, message=None):
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super(NoRootWrapSpecified, self).__init__(message)
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def _subprocess_setup():
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# Python installs a SIGPIPE handler by default. This is usually not what
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# non-Python subprocesses expect.
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signal.signal(signal.SIGPIPE, signal.SIG_DFL)
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def execute(*cmd, **kwargs):
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"""Helper method to shell out and execute a command through subprocess.
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Allows optional retry.
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:param cmd: Passed to subprocess.Popen.
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:type cmd: string
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:param process_input: Send to opened process.
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:type process_input: string
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:param check_exit_code: Single bool, int, or list of allowed exit
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codes. Defaults to [0]. Raise
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:class:`ProcessExecutionError` unless
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program exits with one of these code.
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:type check_exit_code: boolean, int, or [int]
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:param delay_on_retry: True | False. Defaults to True. If set to True,
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wait a short amount of time before retrying.
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:type delay_on_retry: boolean
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:param attempts: How many times to retry cmd.
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:type attempts: int
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:param run_as_root: True | False. Defaults to False. If set to True,
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the command is prefixed by the command specified
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in the root_helper kwarg.
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:type run_as_root: boolean
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:param root_helper: command to prefix to commands called with
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run_as_root=True
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:type root_helper: string
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:param shell: whether or not there should be a shell used to
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execute this command. Defaults to false.
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:type shell: boolean
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:param loglevel: log level for execute commands.
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:type loglevel: int. (Should be stdlib_logging.DEBUG or
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stdlib_logging.INFO)
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:returns: (stdout, stderr) from process execution
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:raises: :class:`UnknownArgumentError` on
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receiving unknown arguments
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:raises: :class:`ProcessExecutionError`
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"""
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process_input = kwargs.pop('process_input', None)
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check_exit_code = kwargs.pop('check_exit_code', [0])
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ignore_exit_code = False
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delay_on_retry = kwargs.pop('delay_on_retry', True)
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attempts = kwargs.pop('attempts', 1)
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run_as_root = kwargs.pop('run_as_root', False)
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root_helper = kwargs.pop('root_helper', '')
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shell = kwargs.pop('shell', False)
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loglevel = kwargs.pop('loglevel', stdlib_logging.DEBUG)
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if isinstance(check_exit_code, bool):
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ignore_exit_code = not check_exit_code
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check_exit_code = [0]
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elif isinstance(check_exit_code, int):
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check_exit_code = [check_exit_code]
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if kwargs:
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raise UnknownArgumentError(_('Got unknown keyword args '
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'to utils.execute: %r') % kwargs)
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if run_as_root and hasattr(os, 'geteuid') and os.geteuid() != 0:
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if not root_helper:
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raise NoRootWrapSpecified(
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message=_('Command requested root, but did not '
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'specify a root helper.'))
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cmd = shlex.split(root_helper) + list(cmd)
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cmd = map(str, cmd)
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while attempts > 0:
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attempts -= 1
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try:
|
||||
LOG.log(loglevel, 'Running cmd (subprocess): %s',
|
||||
' '.join(cmd))
|
||||
_PIPE = subprocess.PIPE # pylint: disable=E1101
|
||||
|
||||
if os.name == 'nt':
|
||||
preexec_fn = None
|
||||
close_fds = False
|
||||
else:
|
||||
preexec_fn = _subprocess_setup
|
||||
close_fds = True
|
||||
|
||||
obj = subprocess.Popen(cmd,
|
||||
stdin=_PIPE,
|
||||
stdout=_PIPE,
|
||||
stderr=_PIPE,
|
||||
close_fds=close_fds,
|
||||
preexec_fn=preexec_fn,
|
||||
shell=shell)
|
||||
result = None
|
||||
for _i in six.moves.range(20):
|
||||
# NOTE(russellb) 20 is an arbitrary number of retries to
|
||||
# prevent any chance of looping forever here.
|
||||
try:
|
||||
if process_input is not None:
|
||||
result = obj.communicate(process_input)
|
||||
else:
|
||||
result = obj.communicate()
|
||||
except OSError as e:
|
||||
if e.errno in (errno.EAGAIN, errno.EINTR):
|
||||
continue
|
||||
raise
|
||||
break
|
||||
obj.stdin.close() # pylint: disable=E1101
|
||||
_returncode = obj.returncode # pylint: disable=E1101
|
||||
LOG.log(loglevel, 'Result was %s' % _returncode)
|
||||
if not ignore_exit_code and _returncode not in check_exit_code:
|
||||
(stdout, stderr) = result
|
||||
raise ProcessExecutionError(exit_code=_returncode,
|
||||
stdout=stdout,
|
||||
stderr=stderr,
|
||||
cmd=' '.join(cmd))
|
||||
return result
|
||||
except ProcessExecutionError:
|
||||
if not attempts:
|
||||
raise
|
||||
else:
|
||||
LOG.log(loglevel, '%r failed. Retrying.', cmd)
|
||||
if delay_on_retry:
|
||||
greenthread.sleep(random.randint(20, 200) / 100.0)
|
||||
finally:
|
||||
# NOTE(termie): this appears to be necessary to let the subprocess
|
||||
# call clean something up in between calls, without
|
||||
# it two execute calls in a row hangs the second one
|
||||
greenthread.sleep(0)
|
||||
|
||||
|
||||
def trycmd(*args, **kwargs):
|
||||
"""A wrapper around execute() to more easily handle warnings and errors.
|
||||
|
||||
Returns an (out, err) tuple of strings containing the output of
|
||||
the command's stdout and stderr. If 'err' is not empty then the
|
||||
command can be considered to have failed.
|
||||
|
||||
:discard_warnings True | False. Defaults to False. If set to True,
|
||||
then for succeeding commands, stderr is cleared
|
||||
|
||||
"""
|
||||
discard_warnings = kwargs.pop('discard_warnings', False)
|
||||
|
||||
try:
|
||||
out, err = execute(*args, **kwargs)
|
||||
failed = False
|
||||
except ProcessExecutionError as exn:
|
||||
out, err = '', str(exn)
|
||||
failed = True
|
||||
|
||||
if not failed and discard_warnings and err:
|
||||
# Handle commands that output to stderr but otherwise succeed
|
||||
err = ''
|
||||
|
||||
return out, err
|
||||
|
||||
|
||||
def ssh_execute(ssh, cmd, process_input=None,
|
||||
addl_env=None, check_exit_code=True):
|
||||
LOG.debug('Running cmd (SSH): %s', cmd)
|
||||
if addl_env:
|
||||
raise InvalidArgumentError(_('Environment not supported over SSH'))
|
||||
|
||||
if process_input:
|
||||
# This is (probably) fixable if we need it...
|
||||
raise InvalidArgumentError(_('process_input not supported over SSH'))
|
||||
|
||||
stdin_stream, stdout_stream, stderr_stream = ssh.exec_command(cmd)
|
||||
channel = stdout_stream.channel
|
||||
|
||||
# NOTE(justinsb): This seems suspicious...
|
||||
# ...other SSH clients have buffering issues with this approach
|
||||
stdout = stdout_stream.read()
|
||||
stderr = stderr_stream.read()
|
||||
stdin_stream.close()
|
||||
|
||||
exit_status = channel.recv_exit_status()
|
||||
|
||||
# exit_status == -1 if no exit code was returned
|
||||
if exit_status != -1:
|
||||
LOG.debug('Result was %s' % exit_status)
|
||||
if check_exit_code and exit_status != 0:
|
||||
raise ProcessExecutionError(exit_code=exit_status,
|
||||
stdout=stdout,
|
||||
stderr=stderr,
|
||||
cmd=cmd)
|
||||
|
||||
return (stdout, stderr)
|
@ -1,7 +1,10 @@
|
||||
[DEFAULT]
|
||||
|
||||
# The list of modules to copy from oslo-incubator
|
||||
module=config.generator
|
||||
module=gettextutils
|
||||
module=log
|
||||
module=loopingcall
|
||||
module=processutils
|
||||
# The base module to hold the copy of openstack.common
|
||||
base=ironic_python_agent
|
||||
|
Loading…
x
Reference in New Issue
Block a user