openstack/cinder
Code Issues Proposed changes

Handle config file with newlines and whitespaces

Browse Source 
EMC VMAX driver does not handle newlines and whitespaces
consistently in the XML config file. This patch addressed
this issue.

Change-Id: I45f61f167feee9174ba2bc3229695b680f8e946d
Closes-Bug: #1364232
This commit is contained in:
Xing Yang
2014-09-12 20:16:56 -04:00
parent eb01ccba28
commit 6d59790b9c
3 changed files with 102 additions and 88 deletions
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2
cinder/volume/drivers/emc/emc_vmax_common.py
View File

@@ -652,7 +652,7 @@ class EMCVMAXCommon(object):
'QoS_support': False,
'volume_backend_name': backendName or self.__class__.__name__,
'vendor_name': "EMC",
'driver_version': '1.0',
'driver_version': '2.0',
'storage_protocol': 'unknown',
'location_info': location_info}

126
cinder/volume/drivers/emc/emc_vmax_utils.py
View File

@@ -480,7 +480,6 @@ class EMCVMAXUtils(object):
def find_storage_system_name_from_service(self, configService):
"""Given any service get the storage system name from it.
:param conn: connection to the ecom server
:param configService: the configuration service
:returns: configService['SystemName'] - storage system name (String)
"""
@@ -535,7 +534,7 @@ class EMCVMAXUtils(object):
NOTE: This exists in common too...will be moving it to other file
where both common and masking can access it
:param classname: connection to the ecom server
:param classname: class name for the volume instance
:param bindings: volume created from job
:returns: foundVolumeInstance - the volume instance
@@ -558,18 +557,9 @@ class EMCVMAXUtils(object):
:returns: ecomIp - the ecom IP address
:returns: ecomPort - the ecom port
"""
myFile = open(filename, 'r')
data = myFile.read()
myFile.close()
dom = parseString(data)
ecomIps = dom.getElementsByTagName('EcomServerIp')
if ecomIps is not None and len(ecomIps) > 0:
ecomIp = ecomIps[0].toxml().replace('<EcomServerIp>', '')
ecomIp = ecomIp.replace('</EcomServerIp>', '')
ecomPorts = dom.getElementsByTagName('EcomServerPort')
if ecomPorts is not None and len(ecomPorts) > 0:
ecomPort = ecomPorts[0].toxml().replace('<EcomServerPort>', '')
ecomPort = ecomPort.replace('</EcomServerPort>', '')
ecomIp = self._parse_from_file(filename, 'EcomServerIp')
ecomPort = self._parse_from_file(filename, 'EcomServerPort')
if ecomIp is not None and ecomPort is not None:
LOG.debug("Ecom IP: %(ecomIp)s Port: %(ecomPort)s",
{'ecomIp': ecomIp, 'ecomPort': ecomPort})
@@ -585,18 +575,9 @@ class EMCVMAXUtils(object):
:returns: ecomUser - the ecom user
:returns: ecomPasswd - the ecom password
"""
myFile = open(filename, 'r')
data = myFile.read()
myFile.close()
dom = parseString(data)
ecomUsers = dom.getElementsByTagName('EcomUserName')
if ecomUsers is not None and len(ecomUsers) > 0:
ecomUser = ecomUsers[0].toxml().replace('<EcomUserName>', '')
ecomUser = ecomUser.replace('</EcomUserName>', '')
ecomPasswds = dom.getElementsByTagName('EcomPassword')
if ecomPasswds is not None and len(ecomPasswds) > 0:
ecomPasswd = ecomPasswds[0].toxml().replace('<EcomPassword>', '')
ecomPasswd = ecomPasswd.replace('</EcomPassword>', '')
ecomUser = self._parse_from_file(filename, 'EcomUserName')
ecomPasswd = self._parse_from_file(filename, 'EcomPassword')
if ecomUser is not None and ecomPasswd is not None:
return ecomUser, ecomPasswd
else:
@@ -622,11 +603,14 @@ class EMCVMAXUtils(object):
portGroupsXml = portGroups[0].toxml()
portGroupsXml = portGroupsXml.replace('<PortGroups>', '')
portGroupsXml = portGroupsXml.replace('</PortGroups>', '')
portGroupsXml = portGroupsXml.replace('<PortGroup>', '')
portGroupsXml = portGroupsXml.replace('<PortGroup>', '|')
portGroupsXml = portGroupsXml.replace('</PortGroup>', '')
# convert the newline separated string to a list
portGroupsXml = portGroupsXml.replace('\n', '')
portGroupsXml = portGroupsXml.replace('\t', '')
portGroupsXml = portGroupsXml[1:]
# convert the | separated string to a list
portGroupNames = (
[s.strip() for s in portGroupsXml.split('\n') if s])
[s.strip() for s in portGroupsXml.split('|') if s])
numPortGroups = len(portGroupNames)
@@ -639,30 +623,46 @@ class EMCVMAXUtils(object):
LOG.error(exception_message)
raise exception.VolumeBackendAPIException(data=exception_message)
def parse_fast_policy_name_from_file(self, fileName):
"""Parse the fast policy name from config file. If it is not there
then NON FAST is assumed
def _parse_from_file(self, fileName, stringToParse):
"""Parse the string from XML.
Remove newlines, tabs, and trailing spaces.
:param fileName: the path and name of the file
:returns: fastPolicyName - the fast policy name
:returns: retString - the returned string
"""
fastPolicyName = None
retString = None
myFile = open(fileName, 'r')
data = myFile.read()
myFile.close()
dom = parseString(data)
fastPolicy = dom.getElementsByTagName('FastPolicy')
if fastPolicy is not None and len(fastPolicy) > 0:
fastPolicyXml = fastPolicy[0].toxml()
fastPolicyXml = fastPolicyXml.replace('<FastPolicy>', '')
fastPolicyName = fastPolicyXml.replace('</FastPolicy>', '')
tag = dom.getElementsByTagName(stringToParse)
if tag is not None and len(tag) > 0:
strXml = tag[0].toxml()
strXml = strXml.replace('<%s>' % stringToParse, '')
strXml = strXml.replace('\n', '')
strXml = strXml.replace('\t', '')
retString = strXml.replace('</%s>' % stringToParse, '')
retString = retString.strip()
return retString
def parse_fast_policy_name_from_file(self, fileName):
"""Parse the fast policy name from config file.
If it is not there, then NON FAST is assumed.
:param fileName: the path and name of the file
:returns: fastPolicyName - the fast policy name
"""
fastPolicyName = self._parse_from_file(fileName, 'FastPolicy')
if fastPolicyName:
LOG.debug("File %(fileName)s: Fast Policy is %(fastPolicyName)s"
% {'fileName': fileName,
'fastPolicyName': fastPolicyName})
return fastPolicyName
else:
LOG.info(_("Fast Policy not found."))
return None
return fastPolicyName
def parse_array_name_from_file(self, fileName):
"""Parse the array name from config file.
@@ -673,20 +673,10 @@ class EMCVMAXUtils(object):
:param fileName: the path and name of the file
:returns: arrayName - the array name
"""
arrayName = None
myFile = open(fileName, 'r')
data = myFile.read()
myFile.close()
dom = parseString(data)
array = dom.getElementsByTagName('Array')
if array is not None and len(array) > 0:
arrayXml = array[0].toxml()
arrayXml = arrayXml.replace('<Array>', '')
arrayName = arrayXml.replace('</Array>', '')
return arrayName
else:
arrayName = self._parse_from_file(fileName, 'Array')
if not arrayName:
LOG.debug("Array not found from config file.")
return None
return arrayName
def parse_pool_name_from_file(self, fileName):
"""Parse the pool name from config file.
@@ -696,18 +686,8 @@ class EMCVMAXUtils(object):
:param fileName: the path and name of the file
:returns: poolName - the pool name
"""
poolName = None
myFile = open(fileName, 'r')
data = myFile.read()
myFile.close()
dom = parseString(data)
pool = dom.getElementsByTagName('Pool')
if pool is not None and len(pool) > 0:
poolXml = pool[0].toxml()
poolXml = poolXml.replace('<Pool>', '')
poolName = poolXml.replace('</Pool>', '')
return poolName
else:
poolName = self._parse_from_file(fileName, 'Pool')
if not poolName:
LOG.debug("Pool not found from config file.")
return poolName
@@ -1148,7 +1128,7 @@ class EMCVMAXUtils(object):
self, conn, hardwareIdManagementService):
"""Get all the hardware ids from an array.
:param conn: connection to the ecom
:param conn: connection to the ecom server
:param: hardwareIdManagementService - hardware id management service
:returns: hardwareIdInstanceNames - the list of hardware
id instance names
@@ -1177,11 +1157,15 @@ class EMCVMAXUtils(object):
propertiesList = (
ipProtocolEndpointInstance.properties.items())
for properties in propertiesList:
if properties[0] == 'ElementName':
if properties[0] == 'IPv4Address':
cimProperties = properties[1]
foundIpAddress = cimProperties.value
break
if foundIpAddress is not None:
break
if (foundIpAddress == '127.0.0.1'
or foundIpAddress == '0.0.0.0'):
foundIpAddress = None
else:
break
if foundIpAddress is not None:
break
return foundIpAddress