110 lines
3.9 KiB
Python
110 lines
3.9 KiB
Python
import json
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import socket
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from charms.reactive import hook
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from charms.reactive import RelationBase
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from charms.reactive import scopes
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from charmhelpers.core import hookenv
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from charmhelpers.core.hookenv import log
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from charmhelpers.contrib.storage.linux.ceph import (
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CephBrokerRq,
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is_request_complete,
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send_request_if_needed,
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)
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class CephClient(RelationBase):
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scope = scopes.GLOBAL
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auto_accessors = ['mds_key', 'fsid', 'auth']
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@hook('{requires:ceph-mds}-relation-{joined}')
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def joined(self):
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self.set_remote(key='mds-name', value=socket.gethostname())
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self.set_state('{relation_name}.connected')
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self.initialize_mds(name=socket.gethostname())
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@hook('{requires:ceph-mds}-relation-{changed,departed}')
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def changed(self):
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data = {
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'mds_key': self.mds_key(),
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'fsid': self.fsid(),
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'auth': self.auth(),
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'mon_hosts': self.mon_hosts()
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}
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if all(data.values()):
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self.set_state('{relation_name}.available')
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rq = self.get_local(key='broker_req')
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if rq and is_request_complete(rq,
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relation=self.relation_name):
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self.set_state('{relation_name}.pools.available')
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@hook('{requires:ceph-mds}-relation-{broken}')
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def broken(self):
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self.remove_state('{relation_name}.available')
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self.remove_state('{relation_name}.connected')
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self.remove_state('{relation_name}.pools.available')
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def initialize_mds(self, name, replicas=3):
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"""
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Request pool setup and mds creation
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@param name: name of mds pools to create
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@param replicas: number of replicas for supporting pools
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"""
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# json.dumps of the CephBrokerRq()
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json_rq = self.get_local(key='broker_req')
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if not json_rq:
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rq = CephBrokerRq()
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rq.add_op_create_pool(name="{}_data".format(name),
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replica_count=replicas,
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weight=None)
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rq.add_op_create_pool(name="{}_metadata".format(name),
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replica_count=replicas,
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weight=None)
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# Create CephFS
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rq.ops.append({
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'op': 'create-cephfs',
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'mds_name': name,
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'data_pool': "{}_data".format(name),
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'metadata_pool': "{}_metadata".format(name),
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})
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self.set_local(key='broker_req', value=rq.request)
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send_request_if_needed(rq, relation=self.relation_name)
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else:
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rq = CephBrokerRq()
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try:
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j = json.loads(json_rq)
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log("Json request: {}".format(json_rq))
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rq.ops = j['ops']
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send_request_if_needed(rq, relation=self.relation_name)
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except ValueError as err:
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log("Unable to decode broker_req: {}. Error: {}".format(
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json_rq, err))
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def get_remote_all(self, key, default=None):
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"""Return a list of all values presented by remote units for key"""
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# TODO: might be a nicer way todo this - written a while back!
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values = []
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for conversation in self.conversations():
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for relation_id in conversation.relation_ids:
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for unit in hookenv.related_units(relation_id):
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value = hookenv.relation_get(key,
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unit,
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relation_id) or default
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if value:
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values.append(value)
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return list(set(values))
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def mon_hosts(self):
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"""List of all monitor host public addresses"""
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hosts = []
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addrs = self.get_remote_all('ceph-public-address')
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for addr in addrs:
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hosts.append('{}:6789'.format(addr))
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hosts.sort()
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return hosts
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