Problem creating a regular expression to parse open-iscsi, iscsiadm output (help?)
Kevin LaTona
lists at studiosola.com
Thu Jun 13 10:42:07 EDT 2013
On Jun 12, 2013, at 5:59 PM, rice.cruft at gmail.com wrote:
> I am parsing the output of an open-iscsi command that contains several blocks of data for each data set. Each block has the format:
> Lastly, a version of this regex as a non-VERBOSE expression works as expected.. Something about re.VERBOSE... ????
Snip
With the following code tweaks in Python 2.7.2, I find it works with VERBOSE for me, but not without.
I would say the regex could still use some more adjustments yet.
-Kevin
import re
inp ="""
Target: iqn.1992-04.com.emc:vplex-000000008460319f-0000000000000007
Current Portal: 221.128.52.224:3260,7
Persistent Portal: 221.128.52.224:3260,7
**********
Interface:
**********
Iface Name: default
Iface Transport: tcp
Iface Initiatorname: iqn.1996-04.de.suse:01:7c9741b545b5
Iface IPaddress: 221.128.52.214
Iface HWaddress: <empty>
Iface Netdev: <empty>
SID: 154
iSCSI Connection State: LOGGED IN
iSCSI Session State: LOGGED_IN
Internal iscsid Session State: NO CHANGE
"""
regex = re.compile( r'''
# Target name, iqn
Target:\s+(?P<iqn>\S+)\s*
# Target portal
\s+Current\sPortal:\s*
(?P<ipaddr>\w+\.\w+\.\w+\.\w+):(?P<port>\d+),(?P<tag>\d+)
# skip lines...
[\s\S]*?
# Initiator name, iqn
Iface\s+Initiatorname:\s+(?P<initiatorName>\S+)\s*
# Initiator port, IP address
Iface\s+IPaddress:\s+(?P<initiatorIP>\S+)
# skip lines...
[\s\S]*?
# Session ID
SID:\s+(?P<SID>\d+)\s*
# Connection state
iSCSI\ +Connection\ +State:\s+(?P<connState>\w+\s*\w*)
[\s\S]*?
# Session state iSCSI
iSCSI\s+Session\s+State:\s+(?P<sessionState>\w+)\s*
# Session state Internal
Internal\s+iscsid\s+Session\s+State:.*\s+(?P<ss2>\w+\s\w+)
''', re.VERBOSE|re.MULTILINE)
myDetails = [ m.groupdict() for m in regex.finditer(inp)][0]
for k,v in myDetails.iteritems():
print k,v
#*************
If you want just the values back in the order parsed this will work for now.
for match in regex.findall(inp):
for item in range(len(match)):
print match[item]
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