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|
import json
from rcUtilities import which, justcall
import rcExceptions as ex
import rcStatus
import datetime
import resSync
class syncRadosSnap(resSync.Sync):
def recreate(self):
self.validate_image_fmt()
for image in self.images:
self._recreate(image)
def _recreate(self, image):
snapnames = self._get_all(image)
last_date, last_name = self._get_last(image)
if self.skip_sync(last_date):
self.log.info("skip resync for image %s: last resync on %s"%(image, str(last_date)))
return
snapname = self.snap_basename() + datetime.datetime.now().strftime(self.date_fmt)
cmd = self.rbd_cmd()+['snap', 'create', image, '--snap', snapname]
ret, out, err = self.vcall(cmd)
if ret != 0:
raise ex.excError
for snapname in snapnames:
self.rm(snapname)
def rm(self, image):
cmd = self.rbd_cmd()+['snap', 'rm', image]
ret, out, err = self.vcall(cmd)
def unprotect(self, image):
cmd = self.rbd_cmd()+['snap', 'unprotect', image]
ret, out, err = self.vcall(cmd)
if ret != 0:
raise ex.excError
def get_all(self):
data = {}
for image in self.images:
data[image] = self._get_all(image)
return data
def _get_all(self, image):
data = self.list()
retained = []
prefix = image+"@"+self.snap_basename()
for name in data:
if not name.startswith(prefix):
continue
retained.append(name)
return retained
def get_last(self):
data = {}
for image in self.images:
data[image] = self._get_last(image)
return data
def _get_last(self, image):
data = self.list()
retained = []
prefix = image+"@"+self.snap_basename()
for name in data:
if not name.startswith(prefix):
continue
try:
date = datetime.datetime.strptime(name, prefix+self.date_fmt)
except:
continue
retained.append((date, name))
if len(retained) == 0:
return None, None
last_date, last_name = sorted(retained)[-1]
return last_date, last_name
def rbd_cmd(self):
l = ["rbd"]
if self.client_id:
l += ["-n", self.client_id]
if self.keyring:
l += ["--keyring", self.keyring]
return l
def snap_basename(self):
return self.rid+"."
def get_pools(self):
l = set([])
for image in self.images:
pool = image.split("/")[0]
l.add(pool)
return l
def list(self):
if self.list_data is not None:
return self.list_data
data = {}
for pool in self.get_pools():
data.update(self._list(pool))
self.list_data = data
return data
def _list(self, pool):
cmd = self.rbd_cmd() + ["ls", "-l", pool, "--format", "json"]
out, err, ret = justcall(cmd)
data = {}
try:
_data = json.loads(out)
except Exception as e:
self.status_log(str(e))
_data = []
for img_data in _data:
idx = pool+"/"+img_data['image']
if "snapshot" in img_data:
idx += "@"+img_data['snapshot']
data[idx] = img_data
return data
def _status(self, verbose=False):
try:
self.validate_image_fmt()
except Exception as e:
self.status_log(str(e))
return rcStatus.WARN
try:
data = self.get_last()
except Exception as e:
self.status_log(str(e))
return rcStatus.WARN
nosnap = []
expired = []
ok = []
for image in self.images:
date, snapname = data[image]
if date is None:
nosnap.append(image)
elif date < datetime.datetime.now() - datetime.timedelta(minutes=self.sync_max_delay):
expired.append(image)
else:
ok.append(image)
r = rcStatus.UP
if len(nosnap) > 0:
self.status_log("no snap found for images: "+", ".join(nosnap))
r = rcStatus.WARN
if len(expired) > 0:
self.status_log("snap too old for images: "+", ".join(expired))
r = rcStatus.WARN
return r
def sync_update(self):
self.recreate()
def sync_resync(self):
self.recreate()
def __init__(self,
rid=None,
images=[],
client_id=None,
keyring=None,
**kwargs):
resSync.Sync.__init__(self,
rid=rid,
type="sync.rados",
**kwargs)
self.fmt_label("snap", images)
self.images = images
if not client_id.startswith("client."):
client_id = "client."+client_id
self.client_id = client_id
self.keyring = keyring
self.list_data = None
self.date_fmt = "%Y-%m-%d.%H:%M:%S"
def validate_image_fmt(self):
l = []
for image in self.images:
if image.count("/") != 1:
l.append(image)
if len(l) > 0:
raise ex.excError("wrong format (expected pool/image): "+", ".join(l))
def fmt_label(self, t, l):
self.label = t+" rados %s"%', '.join(l)
if len(self.label) > 80:
self.label = self.label[:76]+"..."
def __str__(self):
return "%s images=%s" % (resSync.Sync.__str__(self),\
', '.join(self.images))
class syncRadosClone(syncRadosSnap):
def __init__(self,
rid=None,
pairs=[],
client_id=None,
keyring=None,
type="sync.rados",
sync_max_delay=None,
schedule=None,
optional=False,
disabled=False,
tags=set([]),
internal=False,
subset=None):
images = map(lambda x: x.split(":")[0], pairs)
syncRadosSnap.__init__(self,
rid=rid,
images=images,
client_id=client_id,
keyring=keyring,
type=type,
sync_max_delay=sync_max_delay,
schedule=schedule,
optional=optional,
disabled=disabled,
tags=tags,
subset=subset)
self.pairs = pairs
self.fmt_label("clone", pairs)
def recreate(self):
self.validate_pair_fmt()
for pair in self.pairs:
self._recreate(pair)
def _recreate(self, pair):
image, clone = pair.split(":")
snapnames = self._get_all(image)
last_date, last_name = self._get_last(image)
if self.skip_sync(last_date):
self.log.info("skip resync for image %s: last resync on %s"%(image, str(last_date)))
return
snapname = self.snap_basename() + datetime.datetime.now().strftime(self.date_fmt)
cmd = self.rbd_cmd()+['snap', 'create', image, '--snap', snapname]
ret, out, err = self.vcall(cmd)
if ret != 0:
raise ex.excError
cmd = self.rbd_cmd()+['snap', 'protect', image+"@"+snapname]
ret, out, err = self.vcall(cmd)
if ret != 0:
raise ex.excError
list_data = self.list()
if clone in list_data:
cmd = self.rbd_cmd()+['rm', clone]
ret, out, err = self.vcall(cmd)
if ret != 0:
raise ex.excError
cmd = self.rbd_cmd()+['clone', image+"@"+snapname, clone]
ret, out, err = self.vcall(cmd)
if ret != 0:
raise ex.excError
for snapname in snapnames:
try:
self.unprotect(snapname)
self.rm(snapname)
except:
pass
def validate_pair_fmt(self):
l = []
for pair in self.pairs:
try:
image, clone = pair.split(":")
except:
l.append(image)
continue
if image.count("/") != 1 or clone.count("/") != 1:
l.append(image)
if len(l) > 0:
raise ex.excError("wrong format (expected pool/image:pool/image): "+", ".join(l))
def snap_basename(self):
return self.rid+".cloneref."
def _status(self, verbose=False):
try:
self.validate_pair_fmt()
except Exception as e:
self.status_log(str(e))
return rcStatus.WARN
try:
data = self.get_last()
except Exception as e:
self.status_log(str(e))
return rcStatus.WARN
nosnap = []
noclone = []
expired = []
invclone = []
ok = []
for image in self.images:
date, snapname = data[image]
if date is None:
nosnap.append(image)
elif date < datetime.datetime.now() - datetime.timedelta(minutes=self.sync_max_delay):
expired.append(image)
else:
ok.append(image)
list_data = self.list()
for pair in self.pairs:
image, clone = pair.split(":")
if clone not in list_data:
noclone.append(pair)
elif not list_data[clone].get("parent"):
invclone.append(pair)
r = rcStatus.UP
if len(nosnap) > 0:
self.status_log("no snap found for images: "+", ".join(nosnap))
r = rcStatus.WARN
if len(expired) > 0:
self.status_log("snap too old for images: "+", ".join(expired))
r = rcStatus.WARN
if len(noclone) > 0:
self.status_log("no clone found for pairs: "+", ".join(noclone))
r = rcStatus.WARN
if len(invclone) > 0:
self.status_log("clone invalid for pairs: "+", ".join(invclone))
r = rcStatus.WARN
return r
|
