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Alexander Schulz
ds-project
Commits
f7499637
Commit
f7499637
authored
1 year ago
by
Michael Zanger
Browse files
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Small Fix Leader Election
parent
6dbefadf
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1 changed file
server.py
+8
-4
8 additions, 4 deletions
server.py
with
8 additions
and
4 deletions
server.py
+
8
−
4
View file @
f7499637
...
...
@@ -49,6 +49,7 @@ class Server(multiprocessing.Process):
self
.
ring_socket
=
ring_socket
if
self
.
os
==
"
macOS
"
:
self
.
ring_socket
.
setsockopt
(
socket
.
SOL_SOCKET
,
socket
.
SO_REUSEPORT
,
1
)
self
.
ring_socket
.
setsockopt
(
socket
.
SOL_SOCKET
,
socket
.
SO_REUSEADDR
,
1
)
self
.
ring_socket
.
bind
((
self
.
server_address
,
leader_election_port
))
self
.
server_uuid
=
self
.
generate_server_uuid
()
print
(
"
My UUID:
"
,
self
.
server_uuid
)
...
...
@@ -163,7 +164,6 @@ class Server(multiprocessing.Process):
def
send_heartbeat
(
self
):
print
(
"
Heartbeat Sending started
"
)
self
.
local_servers_cache
=
Server
.
local_servers_cache
print
(
"
Local Server Cache:
"
,
self
.
local_servers_cache
)
while
True
:
time
.
sleep
(
10
)
...
...
@@ -550,15 +550,20 @@ class Server(multiprocessing.Process):
# Send the election message to the neighbor's address.
self
.
ring_socket
.
sendto
(
json
.
dumps
(
election_message
).
encode
(),
(
neighbor_address
[
0
],
leader_election_port
))
print
(
election_message
,
"
...sent to:
"
,
neighbor_address
,
"
...on port:
"
,
leader_election_port
)
elif
isLeader
==
Tru
e
and
uuid
!=
self
.
server_uuid
:
#
Agreeing to someone else as
leader
election_message
=
{
"
id
"
:
uuid
,
"
isLeader
"
:
True
}
elif
isLeader
==
Fals
e
and
uuid
<
self
.
server_uuid
:
#
Suggesting itself to
leader
election_message
=
{
"
id
"
:
self
.
server_
uuid
,
"
isLeader
"
:
True
}
# Send the election message to the neighbor's address.
self
.
ring_socket
.
sendto
(
json
.
dumps
(
election_message
).
encode
(),
(
neighbor_address
[
0
],
leader_election_port
))
print
(
election_message
,
"
...sent to:
"
,
neighbor_address
,
"
...on port:
"
,
leader_election_port
)
elif
isLeader
==
False
and
uuid
==
self
.
server_uuid
:
#Suggesting itself to leader
election_message
=
{
"
id
"
:
self
.
server_uuid
,
"
isLeader
"
:
True
}
# Send the election message to the neighbor's address.
self
.
ring_socket
.
sendto
(
json
.
dumps
(
election_message
).
encode
(),
(
neighbor_address
[
0
],
leader_election_port
))
print
(
election_message
,
"
...sent to:
"
,
neighbor_address
,
"
...on port:
"
,
leader_election_port
)
elif
isLeader
==
True
and
uuid
!=
self
.
server_uuid
:
#Agreeing to someone else as leader
election_message
=
{
"
id
"
:
uuid
,
"
isLeader
"
:
True
}
# Send the election message to the neighbor's address.
self
.
ring_socket
.
sendto
(
json
.
dumps
(
election_message
).
encode
(),
(
neighbor_address
[
0
],
leader_election_port
))
else
:
#Sending pid
election_message
=
{
"
id
"
:
uuid
,
"
isLeader
"
:
False
}
# Send the election message to the neighbor's address.
...
...
@@ -613,7 +618,6 @@ class Server(multiprocessing.Process):
data
,
address
=
self
.
ring_socket
.
recvfrom
(
4096
)
#Reset last heartbeat timestamp
self
.
last_heartbeat_timestamp
=
None
print
(
"
first yes
"
)
if
data
:
election_message
=
json
.
loads
(
data
.
decode
())
received_id
=
election_message
.
get
(
'
id
'
)
...
...
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