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Ivan Tyagov
neoppod
Commits
96827f57
Commit
96827f57
authored
Jan 03, 2012
by
Vincent Pelletier
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Merge called-once methods into their caller.
parent
caeac356
Changes
1
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1 changed file
with
53 additions
and
70 deletions
+53
-70
neo/master/app.py
neo/master/app.py
+53
-70
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neo/master/app.py
View file @
96827f57
...
...
@@ -150,6 +150,7 @@ class Application(object):
to self as well as master nodes."""
neo
.
lib
.
logging
.
info
(
'begin the election of a primary master'
)
client_handler
=
election
.
ClientElectionHandler
(
self
)
self
.
unconnected_master_node_set
.
clear
()
self
.
negotiating_master_node_set
.
clear
()
self
.
listening_conn
.
setHandler
(
election
.
ServerElectionHandler
(
self
))
...
...
@@ -165,10 +166,60 @@ class Application(object):
self
.
primary
=
None
self
.
primary_master_node
=
None
try
:
self
.
_doElection
(
bootstrap
)
# Wait at most 20 seconds at bootstrap. Otherwise, wait at most
# 10 seconds to avoid stopping the whole cluster for a long time.
# Note that even if not all master are up in the first 20 seconds
# this is not an issue because the first up will timeout and take
# the primary role.
if
bootstrap
:
expiration
=
20
else
:
expiration
=
10
t
=
0
while
True
:
current_time
=
time
()
if
current_time
>=
t
:
t
=
current_time
+
1
for
node
in
self
.
nm
.
getMasterList
():
if
not
node
.
isRunning
()
and
node
.
getLastStateChange
()
+
\
expiration
<
current_time
:
neo
.
lib
.
logging
.
info
(
'%s is down'
%
(
node
,
))
node
.
setDown
()
self
.
unconnected_master_node_set
.
discard
(
node
.
getAddress
())
# Try to connect to master nodes.
for
addr
in
self
.
unconnected_master_node_set
.
difference
(
x
.
getAddress
()
for
x
in
self
.
em
.
getClientList
()):
ClientConnection
(
self
.
em
,
client_handler
,
addr
=
addr
,
connector
=
self
.
connector_handler
())
self
.
em
.
poll
(
1
)
if
not
(
self
.
unconnected_master_node_set
or
self
.
negotiating_master_node_set
):
break
except
ElectionFailure
,
m
:
# something goes wrong, clean then restart
self
.
_electionFailed
(
m
)
neo
.
lib
.
logging
.
error
(
'election failed: %s'
,
(
m
,
))
# Ask all connected nodes to reelect a single primary master.
for
conn
in
self
.
em
.
getClientList
():
conn
.
notify
(
Packets
.
ReelectPrimary
())
conn
.
abort
()
# Wait until the connections are closed.
self
.
primary
=
None
self
.
primary_master_node
=
None
t
=
time
()
+
10
while
self
.
em
.
getClientList
()
and
time
()
<
t
:
try
:
self
.
em
.
poll
(
1
)
except
ElectionFailure
:
pass
# Close all connections.
for
conn
in
self
.
em
.
getClientList
()
+
self
.
em
.
getServerList
():
conn
.
close
()
bootstrap
=
False
else
:
# election succeed, stop the process
...
...
@@ -176,48 +227,6 @@ class Application(object):
break
def
_doElection
(
self
,
bootstrap
):
"""
Start the election process:
- Try to connect to any known master node
- Wait at most for the timeout defined by bootstrap parameter
When done, the current process is defined either as primary or
secondary master node
"""
# Wait at most 20 seconds at bootstrap. Otherwise, wait at most
# 10 seconds to avoid stopping the whole cluster for a long time.
# Note that even if not all master are up in the first 20 seconds
# this is not an issue because the first up will timeout and take
# the primary role.
if
bootstrap
:
expiration
=
20
else
:
expiration
=
10
client_handler
=
election
.
ClientElectionHandler
(
self
)
t
=
0
while
True
:
current_time
=
time
()
if
current_time
>=
t
:
t
=
current_time
+
1
for
node
in
self
.
nm
.
getMasterList
():
if
not
node
.
isRunning
()
and
node
.
getLastStateChange
()
+
\
expiration
<
current_time
:
neo
.
lib
.
logging
.
info
(
'%s is down'
%
(
node
,
))
node
.
setDown
()
self
.
unconnected_master_node_set
.
discard
(
node
.
getAddress
())
# Try to connect to master nodes.
for
addr
in
self
.
unconnected_master_node_set
.
difference
(
x
.
getAddress
()
for
x
in
self
.
em
.
getClientList
()):
ClientConnection
(
self
.
em
,
client_handler
,
addr
=
addr
,
connector
=
self
.
connector_handler
())
self
.
em
.
poll
(
1
)
if
not
(
self
.
unconnected_master_node_set
or
self
.
negotiating_master_node_set
):
break
def
_announcePrimary
(
self
):
"""
Broadcast the announce that I'm the primary
...
...
@@ -236,32 +245,6 @@ class Application(object):
break
def
_electionFailed
(
self
,
m
):
"""
Ask other masters to reelect a primary after an election failure.
"""
neo
.
lib
.
logging
.
error
(
'election failed: %s'
,
(
m
,
))
# Ask all connected nodes to reelect a single primary master.
for
conn
in
self
.
em
.
getClientList
():
conn
.
notify
(
Packets
.
ReelectPrimary
())
conn
.
abort
()
# Wait until the connections are closed.
self
.
primary
=
None
self
.
primary_master_node
=
None
t
=
time
()
+
10
while
self
.
em
.
getClientList
()
and
time
()
<
t
:
try
:
self
.
em
.
poll
(
1
)
except
ElectionFailure
:
pass
# Close all connections.
for
conn
in
self
.
em
.
getClientList
()
+
self
.
em
.
getServerList
():
conn
.
close
()
def
broadcastNodesInformation
(
self
,
node_list
):
"""
Broadcast changes for a set a nodes
...
...
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