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# -*- coding: utf-8 -*-
from __future__ import absolute_import
from collections import defaultdict
import cherrypy
from . import ApiController, RESTController
from .. import mgr
from ..exceptions import DashboardException
from ..security import Scope
from ..services.ceph_service import CephService
from ..tools import ViewCache
@ApiController('/cephfs', Scope.CEPHFS)
class CephFS(RESTController):
def __init__(self):
super(CephFS, self).__init__()
# Stateful instances of CephFSClients, hold cached results. Key to
# dict is FSCID
self.cephfs_clients = {}
def list(self):
fsmap = mgr.get("fs_map")
return fsmap['filesystems']
def get(self, fs_id):
fs_id = self.fs_id_to_int(fs_id)
return self.fs_status(fs_id)
@RESTController.Resource('GET')
def clients(self, fs_id):
fs_id = self.fs_id_to_int(fs_id)
return self._clients(fs_id)
@RESTController.Resource('GET')
def mds_counters(self, fs_id):
"""
Result format: map of daemon name to map of counter to list of datapoints
rtype: dict[str, dict[str, list]]
"""
# Opinionated list of interesting performance counters for the GUI --
# if you need something else just add it. See how simple life is
# when you don't have to write general purpose APIs?
counters = [
"mds_server.handle_client_request",
"mds_log.ev",
"mds_cache.num_strays",
"mds.exported",
"mds.exported_inodes",
"mds.imported",
"mds.imported_inodes",
"mds.inodes",
"mds.caps",
"mds.subtrees",
"mds_mem.ino"
]
fs_id = self.fs_id_to_int(fs_id)
result = {}
mds_names = self._get_mds_names(fs_id)
for mds_name in mds_names:
result[mds_name] = {}
for counter in counters:
data = mgr.get_counter("mds", mds_name, counter)
if data is not None:
result[mds_name][counter] = data[counter]
else:
result[mds_name][counter] = []
return dict(result)
@staticmethod
def fs_id_to_int(fs_id):
try:
return int(fs_id)
except ValueError:
raise DashboardException(code='invalid_cephfs_id',
msg="Invalid cephfs ID {}".format(fs_id),
component='cephfs')
def _get_mds_names(self, filesystem_id=None):
names = []
fsmap = mgr.get("fs_map")
for fs in fsmap['filesystems']:
if filesystem_id is not None and fs['id'] != filesystem_id:
continue
names.extend([info['name']
for _, info in fs['mdsmap']['info'].items()])
if filesystem_id is None:
names.extend(info['name'] for info in fsmap['standbys'])
return names
def _append_mds_metadata(self, mds_versions, metadata_key):
metadata = mgr.get_metadata('mds', metadata_key)
if metadata is None:
return
mds_versions[metadata.get('ceph_version', 'unknown')].append(metadata_key)
# pylint: disable=too-many-statements,too-many-branches
def fs_status(self, fs_id):
mds_versions = defaultdict(list)
fsmap = mgr.get("fs_map")
filesystem = None
for fs in fsmap['filesystems']:
if fs['id'] == fs_id:
filesystem = fs
break
if filesystem is None:
raise cherrypy.HTTPError(404,
"CephFS id {0} not found".format(fs_id))
rank_table = []
mdsmap = filesystem['mdsmap']
client_count = 0
for rank in mdsmap["in"]:
up = "mds_{0}".format(rank) in mdsmap["up"]
if up:
gid = mdsmap['up']["mds_{0}".format(rank)]
info = mdsmap['info']['gid_{0}'.format(gid)]
dns = mgr.get_latest("mds", info['name'], "mds_mem.dn")
inos = mgr.get_latest("mds", info['name'], "mds_mem.ino")
if rank == 0:
client_count = mgr.get_latest("mds", info['name'],
"mds_sessions.session_count")
elif client_count == 0:
# In case rank 0 was down, look at another rank's
# sessionmap to get an indication of clients.
client_count = mgr.get_latest("mds", info['name'],
"mds_sessions.session_count")
laggy = "laggy_since" in info
state = info['state'].split(":")[1]
if laggy:
state += "(laggy)"
# Populate based on context of state, e.g. client
# ops for an active daemon, replay progress, reconnect
# progress
if state == "active":
activity = CephService.get_rate("mds",
info['name'],
"mds_server.handle_client_request")
else:
activity = 0.0
self._append_mds_metadata(mds_versions, info['name'])
rank_table.append(
{
"rank": rank,
"state": state,
"mds": info['name'],
"activity": activity,
"dns": dns,
"inos": inos
}
)
else:
rank_table.append(
{
"rank": rank,
"state": "failed",
"mds": "",
"activity": 0.0,
"dns": 0,
"inos": 0
}
)
# Find the standby replays
# pylint: disable=unused-variable
for gid_str, daemon_info in mdsmap['info'].items():
if daemon_info['state'] != "up:standby-replay":
continue
inos = mgr.get_latest("mds", daemon_info['name'], "mds_mem.ino")
dns = mgr.get_latest("mds", daemon_info['name'], "mds_mem.dn")
activity = CephService.get_rate(
"mds", daemon_info['name'], "mds_log.replay")
rank_table.append(
{
"rank": "{0}-s".format(daemon_info['rank']),
"state": "standby-replay",
"mds": daemon_info['name'],
"activity": activity,
"dns": dns,
"inos": inos
}
)
df = mgr.get("df")
pool_stats = {p['id']: p['stats'] for p in df['pools']}
osdmap = mgr.get("osd_map")
pools = {p['pool']: p for p in osdmap['pools']}
metadata_pool_id = mdsmap['metadata_pool']
data_pool_ids = mdsmap['data_pools']
pools_table = []
for pool_id in [metadata_pool_id] + data_pool_ids:
pool_type = "metadata" if pool_id == metadata_pool_id else "data"
stats = pool_stats[pool_id]
pools_table.append({
"pool": pools[pool_id]['pool_name'],
"type": pool_type,
"used": stats['bytes_used'],
"avail": stats['max_avail']
})
standby_table = []
for standby in fsmap['standbys']:
self._append_mds_metadata(mds_versions, standby['name'])
standby_table.append({
'name': standby['name']
})
return {
"cephfs": {
"id": fs_id,
"name": mdsmap['fs_name'],
"client_count": client_count,
"ranks": rank_table,
"pools": pools_table
},
"standbys": standby_table,
"versions": mds_versions
}
def _clients(self, fs_id):
cephfs_clients = self.cephfs_clients.get(fs_id, None)
if cephfs_clients is None:
cephfs_clients = CephFSClients(mgr, fs_id)
self.cephfs_clients[fs_id] = cephfs_clients
try:
status, clients = cephfs_clients.get()
except AttributeError:
raise cherrypy.HTTPError(404,
"No cephfs with id {0}".format(fs_id))
if clients is None:
raise cherrypy.HTTPError(404,
"No cephfs with id {0}".format(fs_id))
# Decorate the metadata with some fields that will be
# indepdendent of whether it's a kernel or userspace
# client, so that the javascript doesn't have to grok that.
for client in clients:
if "ceph_version" in client['client_metadata']:
client['type'] = "userspace"
client['version'] = client['client_metadata']['ceph_version']
client['hostname'] = client['client_metadata']['hostname']
elif "kernel_version" in client['client_metadata']:
client['type'] = "kernel"
client['version'] = client['client_metadata']['kernel_version']
client['hostname'] = client['client_metadata']['hostname']
else:
client['type'] = "unknown"
client['version'] = ""
client['hostname'] = ""
return {
'status': status,
'data': clients
}
class CephFSClients(object):
def __init__(self, module_inst, fscid):
self._module = module_inst
self.fscid = fscid
@ViewCache()
def get(self):
return CephService.send_command('mds', 'session ls', srv_spec='{0}:0'.format(self.fscid))
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