--- /dev/null
+from collections import namedtuple
+
+
+CRUSH_RULE_TYPE_REPLICATED = 1
+CRUSH_RULE_TYPE_ERASURE = 3
+
+
+ServiceId = namedtuple('ServiceId', ['fsid', 'service_type', 'service_id'])
+
+
+MON = 'mon'
+OSD = 'osd'
+MDS = 'mds'
+POOL = 'pool'
+OSD_MAP = 'osd_map'
+CRUSH_RULE = 'crush_rule'
+CLUSTER = 'cluster'
+SERVER = 'server'
+
+
+def memoize(function):
+ def wrapper(*args):
+ self = args[0]
+ if not hasattr(self, "_memo"):
+ self._memo = {}
+
+ if args in self._memo:
+ return self._memo[args]
+ else:
+ rv = function(*args)
+ self._memo[args] = rv
+ return rv
+ return wrapper
+
+
+OSD_FLAGS = ('pause', 'noup', 'nodown', 'noout', 'noin', 'nobackfill',
+ 'norecover', 'noscrub', 'nodeep-scrub')
+
+class DataWrapper(object):
+ def __init__(self, data):
+ self.data = data
+
+
+class OsdMap(DataWrapper):
+ str = OSD_MAP
+
+ def __init__(self, data):
+ super(OsdMap, self).__init__(data)
+ if data is not None:
+ self.osds_by_id = dict([(o['osd'], o) for o in data['osds']])
+ self.pools_by_id = dict([(p['pool'], p) for p in data['pools']])
+ self.osd_tree_node_by_id = dict([(o['id'], o) for o in data['tree']['nodes'] if o['id'] >= 0])
+
+ # Special case Yuck
+ flags = data.get('flags', '').replace('pauserd,pausewr', 'pause')
+ tokenized_flags = flags.split(',')
+
+ self.flags = dict([(x, x in tokenized_flags) for x in OSD_FLAGS])
+ else:
+ self.osds_by_id = {}
+ self.pools_by_id = {}
+ self.osd_tree_node_by_id = {}
+ self.flags = dict([(x, False) for x in OSD_FLAGS])
+
+ @property
+ def osd_metadata(self):
+ return self.data['osd_metadata']
+
+ @memoize
+ def get_tree_nodes_by_id(self):
+ return dict((n["id"], n) for n in self.data['tree']["nodes"])
+
+ def _get_crush_rule_osds(self, rule):
+ nodes_by_id = self.get_tree_nodes_by_id()
+
+ def _gather_leaf_ids(node):
+ if node['id'] >= 0:
+ return set([node['id']])
+
+ result = set()
+ for child_id in node['children']:
+ if child_id >= 0:
+ result.add(child_id)
+ else:
+ result |= _gather_leaf_ids(nodes_by_id[child_id])
+
+ return result
+
+ def _gather_descendent_ids(node, typ):
+ result = set()
+ for child_id in node['children']:
+ child_node = nodes_by_id[child_id]
+ if child_node['type'] == typ:
+ result.add(child_node['id'])
+ elif 'children' in child_node:
+ result |= _gather_descendent_ids(child_node, typ)
+
+ return result
+
+ def _gather_osds(root, steps):
+ if root['id'] >= 0:
+ return set([root['id']])
+
+ osds = set()
+ step = steps[0]
+ if step['op'] == 'choose_firstn':
+ # Choose all descendents of the current node of type 'type'
+ d = _gather_descendent_ids(root, step['type'])
+ for desc_node in [nodes_by_id[i] for i in d]:
+ osds |= _gather_osds(desc_node, steps[1:])
+ elif step['op'] == 'chooseleaf_firstn':
+ # Choose all descendents of the current node of type 'type',
+ # and select all leaves beneath those
+ for desc_node in [nodes_by_id[i] for i in _gather_descendent_ids(root, step['type'])]:
+ # Short circuit another iteration to find the emit
+ # and assume anything we've done a chooseleaf on
+ # is going to be part of the selected set of osds
+ osds |= _gather_leaf_ids(desc_node)
+ elif step['op'] == 'emit':
+ if root['id'] >= 0:
+ osds |= root['id']
+
+ return osds
+
+ osds = set()
+ for i, step in enumerate(rule['steps']):
+ if step['op'] == 'take':
+ osds |= _gather_osds(nodes_by_id[step['item']], rule['steps'][i + 1:])
+ return osds
+
+ @property
+ @memoize
+ def osds_by_rule_id(self):
+ result = {}
+ for rule in self.data['crush']['rules']:
+ result[rule['rule_id']] = list(self._get_crush_rule_osds(rule))
+
+ return result
+
+ @property
+ @memoize
+ def osds_by_pool(self):
+ """
+ Get the OSDS which may be used in this pool
+
+ :return dict of pool ID to OSD IDs in the pool
+ """
+
+ result = {}
+ for pool_id, pool in self.pools_by_id.items():
+ osds = None
+ for rule in [r for r in self.data['crush']['rules'] if r['ruleset'] == pool['crush_ruleset']]:
+ if rule['min_size'] <= pool['size'] <= rule['max_size']:
+ osds = self.osds_by_rule_id[rule['rule_id']]
+
+ if osds is None:
+ # Fallthrough, the pool size didn't fall within any of the rules in its ruleset, Calamari
+ # doesn't understand. Just report all OSDs instead of failing horribly.
+ osds = self.osds_by_id.keys()
+
+ result[pool_id] = osds
+
+ return result
+
+ @property
+ @memoize
+ def osd_pools(self):
+ """
+ A dict of OSD ID to list of pool IDs
+ """
+ osds = dict([(osd_id, []) for osd_id in self.osds_by_id.keys()])
+ for pool_id in self.pools_by_id.keys():
+ for in_pool_id in self.osds_by_pool[pool_id]:
+ osds[in_pool_id].append(pool_id)
+
+ return osds
+
+
+class FsMap(DataWrapper):
+ str = 'fs_map'
+
+ def get_filesystem(self, fscid):
+ for fs in self.data['filesystems']:
+ if fs['id'] == fscid:
+ return fs
+
+ raise NotFound("filesystem", fscid)
+
+
+class MonMap(DataWrapper):
+ str = 'mon_map'
+
+
+class MonStatus(DataWrapper):
+ str = 'mon_status'
+
+ def __init__(self, data):
+ super(MonStatus, self).__init__(data)
+ if data is not None:
+ self.mons_by_rank = dict([(m['rank'], m) for m in data['monmap']['mons']])
+ else:
+ self.mons_by_rank = {}
+
+
+class PgSummary(DataWrapper):
+ """
+ A summary of the state of PGs in the cluster, reported by pool and by OSD.
+ """
+ str = 'pg_summary'
+
+
+class Health(DataWrapper):
+ str = 'health'
+
+
+class Config(DataWrapper):
+ str = 'config'
+
+
+class NotFound(Exception):
+ def __init__(self, object_type, object_id):
+ self.object_type = object_type
+ self.object_id = object_id
+
+ def __str__(self):
+ return "Object of type %s with id %s not found" % (self.object_type, self.object_id)
+
Code Review / stor4nfv.git / blobdiff