def _set_nexus(self, nexus_wwn=None):
'''
Sets the nexus initiator WWN. Raises an exception if the nexus is
already set or if the TPG does not use a nexus.
'''
self._check_self()
if not self.has_feature('nexus'):
raise RTSLibError("The TPG does not use a nexus.")
elif self._get_nexus():
raise RTSLibError("The TPG's nexus initiator WWN is already set.")
else:
if nexus_wwn is None:
nexus_wwn = generate_wwn(self.parent_target.wwn_type)
elif not is_valid_wwn(self.parent_target.wwn_type, nexus_wwn):
raise RTSLibError("WWN '%s' is not of type '%s'."
% (nexus_wwn, self.parent_target.wwn_type))
fwrite("%s/nexus" % self.path, nexus_wwn)
def _set_nexus(self, nexus_wwn=None):
'''
Sets the nexus initiator WWN. Raises an exception if the nexus is
already set or if the TPG does not use a nexus.
'''
self._check_self()
if not self.has_feature('nexus'):
raise RTSLibError("The TPG does not use a nexus.")
elif self._get_nexus():
raise RTSLibError("The TPG's nexus initiator WWN is already set.")
else:
if nexus_wwn is None:
nexus_wwn = generate_wwn(self.parent_target.wwn_type)
elif not is_valid_wwn(self.parent_target.wwn_type, nexus_wwn):
raise RTSLibError("WWN '%s' is not of type '%s'." %
(nexus_wwn, self.parent_target.wwn_type))
fwrite("%s/nexus" % self.path, nexus_wwn)
def parse_specfile(spec_file):
'''
Parses the fabric module spec file.
@param spec_file: the path to the specfile to parse.
@type spec_file: str
@return: a dict of spec options
'''
# Recognized options and their default values
name = os.path.basename(spec_file).partition(".")[0]
defaults = dict(features=['discovery_auth', 'acls', 'acls_auth', 'nps',
'tpgts'],
kernel_module="%s_target_mod" % name,
configfs_group=name,
wwn_from_files=[],
wwn_from_files_filter='',
wwn_from_cmds=[],
wwn_from_cmds_filter='',
wwn_type='free')
spec = ConfigObj(spec_file).dict()
# Do not allow unknown options
unknown_options = set(spec.keys()) - set(defaults.keys())
if unknown_options:
raise RTSLibError("Unknown option(s) in %s: %s"
% (spec_file, list(unknown_options)))
# Use defaults for missing options
missing_options = set(defaults.keys()) - set(spec.keys())
for option in missing_options:
spec[option] = defaults[option]
# Type conversion and checking
for option in spec:
spec_type = type(spec[option]).__name__
defaults_type = type(defaults[option]).__name__
if spec_type != defaults_type:
# Type mismatch, go through acceptable conversions
if spec_type == 'str' and defaults_type == 'list':
spec[option] = [spec[option]]
else:
raise RTSLibError("Wrong type for option '%s' in %s. "
% (option, spec_file)
+ "Expected type '%s' and got '%s'."
% (defaults_type, spec_type))
# Generate the list of fixed WWNs if not empty
wwn_list = None
wwn_type = spec['wwn_type']
if spec['wwn_from_files']:
for wwn_pattern in spec['wwn_from_files']:
for wwn_file in glob.iglob(wwn_pattern):
wwns_in_file = [wwn for wwn in
re.split('\t|\0|\n| ', fread(wwn_file))
if wwn.strip()]
if spec['wwn_from_files_filter']:
wwns_filtered = []
for wwn in wwns_in_file:
filter = "echo %s|%s" \
% (wwn, spec['wwn_from_files_filter'])
wwns_filtered.append(exec_argv(filter, shell=True))
else:
wwns_filtered = wwns_in_file
if wwn_list is None:
wwn_list = set([])
wwn_list.update(set([wwn for wwn in wwns_filtered
if is_valid_wwn(wwn_type, wwn)
if wwn]
))
if spec['wwn_from_cmds']:
for wwn_cmd in spec['wwn_from_cmds']:
cmd = subprocess.Popen(wwn_cmd,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
shell=True)
(cmd_result, _) = cmd.communicate()
cmd_result = "\n".join([line.strip()
for line in cmd_result.split("\n")
if line.strip()])
wwns_from_cmd = [wwn for wwn in
re.split('\t|\0|\n| ', cmd_result)
if wwn.strip()]
if spec['wwn_from_cmds_filter']:
wwns_filtered = []
for wwn in wwns_from_cmd:
filter = "echo %s|%s" \
% (wwn, spec['wwn_from_cmds_filter'])
wwns_filtered.append(exec_argv(filter, shell=True))
else:
wwns_filtered = wwns_from_cmd
if wwn_list is None:
wwn_list = set([])
wwn_list.update(set([wwn for wwn in wwns_filtered
if is_valid_wwn(wwn_type, wwn)
if wwn]
))
spec['wwn_list'] = wwn_list
return spec
def is_valid_wwn(self, wwn):
'''
Checks whether or not the provided WWN is valid for this fabric module
according to the spec file.
'''
return is_valid_wwn(self.spec['wwn_type'], wwn, self.spec['wwn_list'])
def parse_specfile(spec_file):
'''
Parses the fabric module spec file.
@param spec_file: the path to the specfile to parse.
@type spec_file: str
@return: a dict of spec options
'''
# Recognized options and their default values
name = os.path.basename(spec_file).partition(".")[0]
defaults = dict(
features=['discovery_auth', 'acls', 'acls_auth', 'nps', 'tpgts'],
kernel_module="%s_target_mod" % name,
configfs_group=name,
wwn_from_files=[],
wwn_from_files_filter='',
wwn_from_cmds=[],
wwn_from_cmds_filter='',
wwn_type='free')
spec = ConfigObj(spec_file).dict()
# Do not allow unknown options
unknown_options = set(spec.keys()) - set(defaults.keys())
if unknown_options:
raise RTSLibError("Unknown option(s) in %s: %s" %
(spec_file, list(unknown_options)))
# Use defaults for missing options
missing_options = set(defaults.keys()) - set(spec.keys())
for option in missing_options:
spec[option] = defaults[option]
# Type conversion and checking
for option in spec:
spec_type = type(spec[option]).__name__
defaults_type = type(defaults[option]).__name__
if spec_type != defaults_type:
# Type mismatch, go through acceptable conversions
if spec_type == 'str' and defaults_type == 'list':
spec[option] = [spec[option]]
else:
raise RTSLibError("Wrong type for option '%s' in %s. " %
(option, spec_file) +
"Expected type '%s' and got '%s'." %
(defaults_type, spec_type))
# Generate the list of fixed WWNs if not empty
wwn_list = None
wwn_type = spec['wwn_type']
if spec['wwn_from_files']:
for wwn_pattern in spec['wwn_from_files']:
for wwn_file in glob.iglob(wwn_pattern):
wwns_in_file = [
wwn for wwn in re.split('\t|\0|\n| ', fread(wwn_file))
if wwn.strip()
]
if spec['wwn_from_files_filter']:
wwns_filtered = []
for wwn in wwns_in_file:
filter = "echo %s|%s" \
% (wwn, spec['wwn_from_files_filter'])
wwns_filtered.append(exec_argv(filter, shell=True))
else:
wwns_filtered = wwns_in_file
if wwn_list is None:
wwn_list = set([])
wwn_list.update(
set([
wwn for wwn in wwns_filtered
if is_valid_wwn(wwn_type, wwn) if wwn
]))
if spec['wwn_from_cmds']:
for wwn_cmd in spec['wwn_from_cmds']:
cmd = subprocess.Popen(wwn_cmd,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
shell=True)
(cmd_result, _) = cmd.communicate()
cmd_result = "\n".join([
line.strip() for line in cmd_result.split("\n")
if line.strip()
])
wwns_from_cmd = [
wwn for wwn in re.split('\t|\0|\n| ', cmd_result)
if wwn.strip()
]
if spec['wwn_from_cmds_filter']:
wwns_filtered = []
for wwn in wwns_from_cmd:
filter = "echo %s|%s" \
% (wwn, spec['wwn_from_cmds_filter'])
wwns_filtered.append(exec_argv(filter, shell=True))
else:
wwns_filtered = wwns_from_cmd
if wwn_list is None:
wwn_list = set([])
wwn_list.update(
set([
wwn for wwn in wwns_filtered
if is_valid_wwn(wwn_type, wwn) if wwn
]))
spec['wwn_list'] = wwn_list
return spec
def is_valid_wwn(self, wwn):
'''
Checks whether or not the provided WWN is valid for this fabric module
according to the spec file.
'''
return is_valid_wwn(self.spec['wwn_type'], wwn, self.spec['wwn_list'])
def _parse_spec(self):
'''
Parses the fabric module spec file.
'''
# Recognized options and their default values
defaults = dict(features=['discovery_auth', 'acls', 'acls_auth', 'nps',
'tpgts'],
kernel_module="%s_target_mod" % self.name,
configfs_group=self.name,
wwn_from_files=[],
wwn_from_files_filter='',
wwn_from_cmds=[],
wwn_from_cmds_filter='',
wwn_type='free')
spec_file = "%s/%s.spec" % (self.spec_dir, self.name)
spec = ConfigObj(spec_file).dict()
if spec:
self.spec_file = spec_file
else:
self.spec_file = ''
# Do not allow unknown options
unknown_options = set(spec.keys()) - set(defaults.keys())
if unknown_options:
raise RTSLibError("Unknown option(s) in %s: %s"
% (spec_file, list(unknown_options)))
# Use defaults for missing options
missing_options = set(defaults.keys()) - set(spec.keys())
for option in missing_options:
spec[option] = defaults[option]
# Type conversion and checking
for option in spec:
spec_type = type(spec[option]).__name__
defaults_type = type(defaults[option]).__name__
if spec_type != defaults_type:
# Type mismatch, go through acceptable conversions
if spec_type == 'str' and defaults_type == 'list':
spec[option] = [spec[option]]
else:
raise RTSLibError("Wrong type for option '%s' in %s. "
% (option, spec_file)
+ "Expected type '%s' and got '%s'."
% (defaults_type, spec_type))
# Generate the list of fixed WWNs if not empty
wwn_list = None
wwn_type = spec['wwn_type']
if spec['wwn_from_files']:
for wwn_pattern in spec['wwn_from_files']:
for wwn_file in glob.iglob(wwn_pattern):
wwns_in_file = [wwn for wwn in
re.split('\t|\0|\n| ', fread(wwn_file))
if wwn.strip()]
if spec['wwn_from_files_filter']:
wwns_filtered = []
for wwn in wwns_in_file:
filter = "echo %s|%s" \
% (wwn, spec['wwn_from_files_filter'])
wwns_filtered.append(exec_argv(filter, shell=True))
else:
wwns_filtered = wwns_in_file
if wwn_list is None:
wwn_list = set([])
wwn_list.update(set([wwn for wwn in wwns_filtered
if is_valid_wwn(wwn_type, wwn)
if wwn]
))
if spec['wwn_from_cmds']:
for wwn_cmd in spec['wwn_from_cmds']:
cmd_result = exec_argv(wwn_cmd, shell=True)
wwns_from_cmd = [wwn for wwn in
re.split('\t|\0|\n| ', cmd_result)
if wwn.strip()]
if spec['wwn_from_cmds_filter']:
wwns_filtered = []
for wwn in wwns_from_cmd:
filter = "echo %s|%s" \
% (wwn, spec['wwn_from_cmds_filter'])
wwns_filtered.append(exec_argv(filter, shell=True))
else:
wwns_filtered = wwns_from_cmd
if wwn_list is None:
wwn_list = set([])
wwn_list.update(set([wwn for wwn in wwns_filtered
if is_valid_wwn(wwn_type, wwn)
if wwn]
))
spec['wwn_list'] = wwn_list
return spec