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Make primary watching happen in the daemon not the Node object

This commit is contained in:
Joshua Boniface 2018-10-21 22:08:23 -04:00
parent d464bf74da
commit bfd42b5a7b
2 changed files with 22 additions and 34 deletions
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22
node-daemon/pvcd/Daemon.py
View File

@ -540,6 +540,28 @@ def update_nodes(new_node_list):
# Alias for our local node (passed to network and domain objects) # Alias for our local node (passed to network and domain objects)
this_node = d_node[myhostname] this_node = d_node[myhostname]
# Primary node
@zk_conn.DataWatch('/primary_node')
def update_primart(new_primary, stat, event=''):
try:
new_primary = new_primary.decode('ascii')
except AttributeError:
new_primary = 'none'
if new_primary != this_node.primary_node:
if config['daemon_mode'] == 'coordinator':
# We're a coordinator and there is no primary
if new_primary == 'none':
if this_node.daemon_state == 'run' and this_node.router_state != 'primary':
logger.out('Contending for primary routing state', state='i')
zkhandler.writedata(zk_conn, {'/primary_node': myhostname})
elif new_primary == myhostname:
zkhandler.writedata(zk_conn, {'/nodes/{}/routerstate'.format(myhostname): 'primary'})
else:
zkhandler.writedata(zk_conn, {'/nodes/{}/routerstate'.format(myhostname): 'secondary'})
for node in d_node:
d_node[node].primary_node = new_primary
# Network objects # Network objects
@zk_conn.ChildrenWatch('/networks') @zk_conn.ChildrenWatch('/networks')
def update_networks(new_network_list): def update_networks(new_network_list):

34
node-daemon/pvcd/NodeInstance.py
View File

@ -138,40 +138,6 @@ class NodeInstance(object):
if self.domain_state == 'unflush' and self.inflush == False: if self.domain_state == 'unflush' and self.inflush == False:
self.unflush() self.unflush()
@self.zk_conn.DataWatch('/primary_node')
def watch_primary_node(data, stat, event=''):
if event and event.type == 'DELETED':
# The key has been deleted after existing before; terminate this watcher
# because this class instance is about to be reaped in Daemon.py
return False
try:
data = data.decode('ascii')
except AttributeError:
data = 'none'
if data != self.primary_node:
if self.daemon_mode == 'coordinator':
# We're a coordinator so we care about networking
if data == 'none':
# Toggle state management of routing functions
if self.name == self.this_node:
if self.daemon_state == 'run' and self.router_state != 'primary':
# Contend for primary
self.logger.out('Contending for primary routing state', state='i')
zkhandler.writedata(self.zk_conn, {'/primary_node': self.name })
elif data == self.this_node:
if self.name == self.this_node:
zkhandler.writedata(self.zk_conn, { '/nodes/{}/routerstate'.format(self.name): 'primary' })
self.primary_node = data
else:
if self.name == self.this_node:
zkhandler.writedata(self.zk_conn, { '/nodes/{}/routerstate'.format(self.name): 'secondary' })
self.primary_node = data
else:
self.primary_node = data
@self.zk_conn.DataWatch('/nodes/{}/memfree'.format(self.name)) @self.zk_conn.DataWatch('/nodes/{}/memfree'.format(self.name))
def watch_node_memfree(data, stat, event=''): def watch_node_memfree(data, stat, event=''):
if event and event.type == 'DELETED': if event and event.type == 'DELETED':