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authorCsaba Henk <csaba@gluster.com>2011-04-18 17:25:28 +0000
committerAnand Avati <avati@gluster.com>2011-04-19 02:30:32 -0700
commit369f66ea51506315545501ab3fd4fe87d011a0e5 (patch)
tree3834045a8095b58e3a110e025e4e7ae8d7a941f4 /xlators/features
parent5a0d15682fb62d768ce088b5d9c9aad974a1460c (diff)
syncdaemon: implement template substitutions for config values
So, for example, a log file setting of /var/log/${mastervol}/${eSlave}.log will be substituted with the volume name of the master and the canonicalized-escaped name of the slave for each master-slave pair. As template expanders, beyond the various forms and derivatives of master and slave, the following are also available: - gsyncd tunables (set in command line or in config) - for regexp sections, regexp group captures can be accessed via "match<i>_<n>", where i=1,2 corresponds to the i-th peer-rx in the section title and n=1,... to the n-th capture. This will enable us to have a static configuration (not having to add new entries on each gsyncd start). Signed-off-by: Csaba Henk <csaba@lowlife.hu> Signed-off-by: Anand Avati <avati@gluster.com> BUG: 2785 (gsyncd logs on slave side go to /dev/null) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=2785
Diffstat (limited to 'xlators/features')
-rw-r--r--xlators/features/marker/utils/syncdaemon/configinterface.py44
-rw-r--r--xlators/features/marker/utils/syncdaemon/gsyncd.py41
-rw-r--r--xlators/features/marker/utils/syncdaemon/resource.py3
3 files changed, 66 insertions, 22 deletions
diff --git a/xlators/features/marker/utils/syncdaemon/configinterface.py b/xlators/features/marker/utils/syncdaemon/configinterface.py
index fce45a2bb..a170b2236 100644
--- a/xlators/features/marker/utils/syncdaemon/configinterface.py
+++ b/xlators/features/marker/utils/syncdaemon/configinterface.py
@@ -4,6 +4,7 @@ except ImportError:
# py 3
import configparser as ConfigParser
import re
+from string import Template
from syncdutils import escape, unescape, norm, update_file
@@ -13,6 +14,22 @@ config_version = 2.0
re_type = type(re.compile(''))
+
+class MultiDict(object):
+
+ def __init__(self, *dd):
+ self.dicts = dd
+
+ def __getitem__(self, key):
+ val = None
+ for d in self.dicts:
+ if d.get(key):
+ val = d[key]
+ if not val:
+ raise KeyError(key)
+ return val
+
+
class GConffile(object):
def _normconfig(self):
@@ -26,9 +43,10 @@ class GConffile(object):
s2[k] = v
self.config._sections[n] = s2
- def __init__(self, path, peers):
+ def __init__(self, path, peers, *dd):
self.peers = peers
self.path = path
+ self.auxdicts = dd
self.config = ConfigParser.RawConfigParser()
self.config.read(path)
self._normconfig()
@@ -89,27 +107,37 @@ class GConffile(object):
ss.sort(scmp)
return ss
- def update_to(self, dct):
+ def update_to(self, dct, allow_unresolved=False):
if not self.peers:
raise RuntimeError('no peers given, cannot select matching options')
- def update_from_sect(sect):
- dct.update(self.config._sections[sect])
+ def update_from_sect(sect, mud):
+ for k, v in self.config._sections[sect].items():
+ if k == '__name__':
+ continue
+ if allow_unresolved:
+ dct[k] = Template(v).safe_substitute(mud)
+ else:
+ dct[k] = Template(v).substitute(mud)
for sect in self.ord_sections():
sp = self.parse_section(sect)
if isinstance(sp[0], re_type) and len(sp) == len(self.peers):
match = True
+ mad = {}
for i in range(len(sp)):
- if not sp[i].search(self.peers[i]):
+ m = sp[i].search(self.peers[i])
+ if not m:
match = False
break
+ for j in range(len(m.groups())):
+ mad['match%d_%d' % (i+1, j+1)] = m.groups()[j]
if match:
- update_from_sect(sect)
+ update_from_sect(sect, MultiDict(dct, mad, *self.auxdicts))
if self.config.has_section(self.section()):
- update_from_sect(self.section())
+ update_from_sect(self.section(), MultiDict(dct, mad, *self.auxdicts))
def get(self, opt=None):
d = {}
- self.update_to(d)
+ self.update_to(d, allow_unresolved = True)
if opt:
opt = norm(opt)
v = d.get(opt)
diff --git a/xlators/features/marker/utils/syncdaemon/gsyncd.py b/xlators/features/marker/utils/syncdaemon/gsyncd.py
index 17c450808..76358414f 100644
--- a/xlators/features/marker/utils/syncdaemon/gsyncd.py
+++ b/xlators/features/marker/utils/syncdaemon/gsyncd.py
@@ -183,6 +183,7 @@ def main_i():
if getattr(confdata, 'rx', None):
# peers are regexen, don't try to parse them
canon_peers = args
+ namedict = {}
else:
rscs = [resource.parse_url(u) for u in args]
dc = rconf.get('do_canon')
@@ -192,21 +193,35 @@ def main_i():
return
local = remote = None
if rscs:
- local = rscs[0]
- if len(rscs) > 1:
- remote = rscs[1]
- if not local.can_connect_to(remote):
- raise RuntimeError("%s cannot work with %s" % (local.path, remote and remote.path))
- pa = ([], [])
- canon = [False, True]
- for x in (local, remote):
- if x:
- for i in range(2):
- pa[i].append(x.get_url(canonical=canon[i]))
- peers, canon_peers = pa
+ local = rscs[0]
+ if len(rscs) > 1:
+ remote = rscs[1]
+ if not local.can_connect_to(remote):
+ raise RuntimeError("%s cannot work with %s" % (local.path, remote and remote.path))
+ pa = ([], [], [])
+ urlprms = ({}, {'canonical': True}, {'canonical': True, 'escaped': True})
+ for x in rscs:
+ for i in range(len(pa)):
+ pa[i].append(x.get_url(**urlprms[i]))
+ peers, canon_peers, canon_esc_peers = pa
+ # creating the namedict, a dict representing various ways of referring to / repreenting
+ # peers to be fillable in config templates
+ mods = (lambda x: x, lambda x: x[0].upper() + x[1:], lambda x: 'e' + x[0].upper() + x[1:])
+ if remote:
+ rmap = { local: ('local', 'master'), remote: ('remote', 'slave') }
+ else:
+ rmap = { local: ('local', 'slave') }
+ namedict = {}
+ for i in range(len(rscs)):
+ x = rscs[i]
+ for name in rmap[x]:
+ for j in range(3):
+ namedict[mods[j](name)] = pa[j][i]
+ if x.scheme == 'gluster':
+ namedict[name + 'vol'] = x.volume
if not 'config_file' in rconf:
rconf['config_file'] = os.path.join(os.path.dirname(sys.argv[0]), "conf/gsyncd.conf")
- gcnf = GConffile(rconf['config_file'], canon_peers)
+ gcnf = GConffile(rconf['config_file'], canon_peers, defaults.__dict__, opts.__dict__, namedict)
if confdata:
opt_ok = norm(confdata.opt) in tunables + [None]
diff --git a/xlators/features/marker/utils/syncdaemon/resource.py b/xlators/features/marker/utils/syncdaemon/resource.py
index 777ff5999..7db7d5bb4 100644
--- a/xlators/features/marker/utils/syncdaemon/resource.py
+++ b/xlators/features/marker/utils/syncdaemon/resource.py
@@ -255,6 +255,7 @@ class AbstractUrl(object):
self.path = path
return m.groups()
+ @property
def scheme(self):
return type(self).__name__.lower()
@@ -266,7 +267,7 @@ class AbstractUrl(object):
pa = self.canonical_path()
else:
pa = self.path
- u = "://".join((self.scheme(), pa))
+ u = "://".join((self.scheme, pa))
if escaped:
u = syncdutils.escape(u)
return u