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:
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
I have worked out the regex to grab the values I am interested with the
exception of the 'iSCSI Connection State' and 'iSCSI Session State'. My regex is
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]*? <<<<<< without this the regex fails
# Session state
iSCSI\ +Session\ +State:\s+(?P<sessionState>\w+)
''', re.VERBOSE|re.MULTILINE)
I tried using \s* to swallow the whitespace between the to iSCSI lines. No
joy... However [\s\S]*? allows the regex to succeed. But that seems to me to be
overkill (I am not trying to skip lines of text here.) Also note that I am
using \ + to catch spaces between the words. On the two problem lines, using
\s+ between the label words fails.
The regex is compiled and fed to a finditer() call... With debug prints:
for m in regex.finditer(inp):
print 'SSSSSS %d' % len(m.groups())
for i in range(len(m.groups())):
print ' SSS--> %s' % (m.group(i+1))
myDetails = [ m.groupdict() for m in regex.finditer(inp)]
print 'ZZZZ myDetails %s' % myDetails
Any help would be appreciated. Lastly, a version of this regex as a
non-VERBOSE expression works as expected.. Something about re.VERBOSE... ????
Thanks.
--Eric
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