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ifupdown2: fix a few regex parsing error messages

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Ticket:
Reviewed By: CCR-3804
Testing Done: Tested regex parsing failures

This is mostly a cosmetic fix. we were failing with weird/unclear errors
on unable to parse regex expressions correctly.
This patch mainly adds the interface name to the message and plus adds
an info message showing the actual regex being used in searches.

example config:
{noformat}
auto br-roopa
iface br-roopa
  bridge-vlan-aware yes
  bridge-ports regex '(\\Aswp3\\Z|\\Aswp4\\Z)'
  bridge-pvid 20
{noformat}

before the patch:
warning: br-roopa: error getting dependent interfaces (unbalanced
parenthesis)

after the patch (not pretty but easier to debug)

info: br-roopa: evaluating port expr '['regex', "'(", 'Aswp3', 'Z|',
'Aswp4', "Z)'"]'
warning: br-roopa: error getting dependent interfaces (br-roopa: error
searching regex ''(' in swp38 (unbalanced parenthesis))

(cherry picked from commit bcca6f753a25494666d53f1f2f3c855ffa41d7f0)
This commit is contained in:
Roopa Prabhu
2015-11-15 21:27:07 -08:00
committed by Sam Tannous
parent 2722bb1972
commit 0c8332bc5e
4 changed files with 46 additions and 30 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
addons/bond.py
View File

@ -122,7 +122,8 @@ class bond(moduleBase):
if not self._is_bond(ifaceobj):
return None
slave_list = self.parse_port_list(ifaceobj.get_attr_value_first(
slave_list = self.parse_port_list(ifaceobj.name,
ifaceobj.get_attr_value_first(
'bond-slaves'), ifacenames_all)
ifaceobj.dependency_type = ifaceDependencyType.MASTER_SLAVE
# Also save a copy for future use
@ -146,7 +147,7 @@ class bond(moduleBase):
return ifaceobj.priv_data
slaves = ifaceobj.get_attr_value_first('bond-slaves')
if slaves:
return self.parse_port_list(slaves)
return self.parse_port_list(ifaceobj.name, slaves)
else:
return None
@ -273,7 +274,7 @@ class bond(moduleBase):
attrval = ifaceobj.get_attrs_value_first(['bond-lacp-bypass-priority',
'bond-lacp-fallback-priority'])
if attrval:
portlist = self.parse_port_list(attrval)
portlist = self.parse_port_list(ifaceobj.name, attrval)
if not portlist:
self.log_warn('%s: could not parse \'%s %s\''
%(ifaceobj.name, attrname, attrval))

20
addons/bridge.py
View File

@ -233,7 +233,8 @@ class bridge(moduleBase):
ifaceobj.link_kind |= ifaceLinkKind.BRIDGE_VLAN_AWARE
ifaceobj.role |= ifaceRole.MASTER
ifaceobj.dependency_type = ifaceDependencyType.MASTER_SLAVE
return self.parse_port_list(ifaceobj.get_attr_value_first(
return self.parse_port_list(ifaceobj.name,
ifaceobj.get_attr_value_first(
'bridge-ports'), ifacenames_all)
def get_dependent_ifacenames_running(self, ifaceobj):
@ -252,7 +253,7 @@ class bridge(moduleBase):
return port_list
ports = ifaceobj.get_attr_value_first('bridge-ports')
if ports:
return self.parse_port_list(ports)
return self.parse_port_list(ifaceobj.name, ports)
else:
return None
@ -270,7 +271,8 @@ class bridge(moduleBase):
return
if waitporttime <= 0: return
try:
waitportlist = self.parse_port_list(waitportvals[1])
waitportlist = self.parse_port_list(ifaceobj.name,
waitportvals[1])
except IndexError, e:
# ignore error and use all bridge ports
waitportlist = portlist
@ -474,7 +476,7 @@ class bridge(moduleBase):
# Install pvids
attrval = ifaceobj.get_attr_value_first('bridge-port-pvids')
if attrval:
portlist = self.parse_port_list(attrval)
portlist = self.parse_port_list(ifaceobj.name, attrval)
if not portlist:
self.log_warn('%s: could not parse \'%s %s\''
%(ifaceobj.name, attrname, attrval))
@ -496,7 +498,7 @@ class bridge(moduleBase):
# install port vids
attrval = ifaceobj.get_attr_value_first('bridge-port-vids')
if attrval:
portlist = self.parse_port_list(attrval)
portlist = self.parse_port_list(ifaceobj.name, attrval)
if not portlist:
self.log_warn('%s: could not parse \'%s %s\''
%(ifaceobj.name, attrname, attrval))
@ -637,7 +639,7 @@ class bridge(moduleBase):
attrval = ifaceobj.get_attr_value_first(attrname)
if not attrval:
continue
portlist = self.parse_port_list(attrval)
portlist = self.parse_port_list(ifaceobj.name, attrval)
if not portlist:
self.log_warn('%s: could not parse \'%s %s\''
%(ifaceobj.name, attrname, attrval))
@ -1229,7 +1231,7 @@ class bridge(moduleBase):
attrval = ifaceobj.get_attr_value_first('bridge-port-vids')
if attrval:
running_bridge_port_vids = ''
portlist = self.parse_port_list(attrval)
portlist = self.parse_port_list(ifaceobj.name, attrval)
if not portlist:
self.log_warn('%s: could not parse \'%s %s\''
%(ifaceobj.name, attrname, attrval))
@ -1261,7 +1263,7 @@ class bridge(moduleBase):
attrval = ifaceobj.get_attr_value_first('bridge-port-pvids')
if attrval:
portlist = self.parse_port_list(attrval)
portlist = self.parse_port_list(ifaceobj.name, attrval)
if not portlist:
self.log_warn('%s: could not parse \'%s %s\''
%(ifaceobj.name, attrname, attrval))
@ -1383,7 +1385,7 @@ class bridge(moduleBase):
# <portname>=<portattrvalue>
status = 0
currstr = ''
vlist = self.parse_port_list(v)
vlist = self.parse_port_list(ifaceobj.name, v)
if not vlist:
continue
for vlistitem in vlist:

9
addons/mstpctl.py
View File

@ -186,7 +186,8 @@ class mstpctl(moduleBase):
def get_dependent_ifacenames(self, ifaceobj, ifacenames_all=None):
if not self._is_bridge(ifaceobj):
return None
return self.parse_port_list(ifaceobj.get_attr_value_first(
return self.parse_port_list(ifaceobj.name,
ifaceobj.get_attr_value_first(
'mstpctl-ports'), ifacenames_all)
def get_dependent_ifacenames_running(self, ifaceobj):
@ -206,7 +207,7 @@ class mstpctl(moduleBase):
return port_list
ports = ifaceobj.get_attr_value_first('mstpctl-ports')
if ports:
return self.parse_port_list(ports)
return self.parse_port_list(ifaceobj.name, ports)
else:
return None
@ -274,7 +275,7 @@ class mstpctl(moduleBase):
attrval = ifaceobj.get_attr_value_first(attrname)
if not attrval:
continue
portlist = self.parse_port_list(attrval)
portlist = self.parse_port_list(ifaceobj.name, attrval)
if not portlist:
self.log_warn('%s: error parsing \'%s %s\''
%(ifaceobj.name, attrname, attrval))
@ -588,7 +589,7 @@ class mstpctl(moduleBase):
# <portname>=<portattrvalue>
status = 0
currstr = ''
vlist = self.parse_port_list(v)
vlist = self.parse_port_list(ifaceobj.name, v)
if not vlist:
continue
for vlistitem in vlist:

40
ifupdownaddons/modulebase.py
View File

@ -126,27 +126,36 @@ class moduleBase(object):
with open('/proc/net/dev') as f:
try:
lines = f.readlines()
for line in lines:
for line in lines[2:]:
ifacenames.append(line.split()[0].strip(': '))
except:
raise
return ifacenames
def parse_regex(self, expr, ifacenames=None):
def parse_regex(self, ifacename, expr, ifacenames=None):
try:
proc_ifacenames = self.get_ifaces_from_proc()
except:
self.logger.warn('error reading ifaces from proc')
self.logger.warn('%s: error reading ifaces from proc' %ifacename)
for proc_ifacename in proc_ifacenames:
if re.search(expr + '$', proc_ifacename):
yield proc_ifacename
try:
if re.search(expr + '$', proc_ifacename):
yield proc_ifacename
except Exception, e:
raise Exception('%s: error searching regex \'%s\' in %s (%s)'
%(ifacename, expr, proc_ifacename, str(e)))
if not ifacenames:
return
for ifacename in ifacenames:
if re.search(expr + '$', ifacename):
yield ifacename
try:
if re.search(expr + '$', ifacename):
yield ifacename
except Exception, e:
raise Exception('%s: error searching regex \'%s\' in %s (%s)'
%(ifacename, expr, ifacename, str(e)))
def parse_glob(self, expr):
def parse_glob(self, ifacename, expr):
errmsg = ('error parsing glob expression \'%s\'' %expr +
' (supported glob syntax: swp1-10.300 or swp[1-10].300' +
' or swp[1-10]sub[0-4].300')
@ -163,7 +172,7 @@ class moduleBase(object):
mlist = m.groups()
if len(mlist) < 7:
# we have problems and should not continue
raise Exception('Error: unhandled glob expression %s\n%s' % (expr,errmsg))
raise Exception('%s: error: unhandled glob expression %s\n%s' % (ifacename, expr,errmsg))
prefix = mlist[0]
suffix = mlist[6]
@ -187,7 +196,7 @@ class moduleBase(object):
m = regexs[2].match(expr)
mlist = m.groups()
if len(mlist) != 4:
raise Exception(errmsg + '(unexpected len)')
raise Exception('%s: ' %ifacename + errmsg + '(unexpected len)')
prefix = mlist[0]
suffix = mlist[3]
start_index = int(mlist[1])
@ -197,10 +206,10 @@ class moduleBase(object):
else:
# Could not match anything.
self.logger.warn('%s' %(errmsg))
self.logger.warn('%s: %s' %(ifacename, errmsg))
yield expr
def parse_port_list(self, port_expr, ifacenames=None):
def parse_port_list(self, ifacename, port_expr, ifacenames=None):
""" parse port list containing glob and regex
Args:
@ -213,7 +222,10 @@ class moduleBase(object):
if not port_expr:
return None
for expr in re.split(r'[\s\t]\s*', port_expr):
exprs = re.split(r'[\s\t]\s*', port_expr)
self.logger.info('%s: evaluating port expr \'%s\''
%(ifacename, str(exprs)))
for expr in exprs:
if expr == 'noregex':
regex = 0
elif expr == 'noglob':
@ -223,7 +235,7 @@ class moduleBase(object):
elif expr == 'glob':
glob = 1
elif regex:
for port in self.parse_regex(expr, ifacenames):
for port in self.parse_regex(ifacename, expr, ifacenames):
if port not in portlist:
portlist.append(port)
regex = 0