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publite2.py
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#!/usr/bin/env python3
'''**********************************************************************
Publite2 is a process manager which launches multiple Freeciv-web servers.
Copyright (C) 2009-2019 The Freeciv-web project
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
***********************************************************************'''
from os import *
import sys
import time
import http.client
import configparser
from pubstatus import *
from civlauncher import Civlauncher
import os.path
import glob
metahost = "localhost"
metaport = 8080
metapath = "/freeciv-web/meta/metaserver"
statuspath = "/freeciv-web/meta/status"
settings_file = "settings.ini"
game_types = ["singleplayer", "multiplayer", "pbem"]
metachecker_interval = 40
port = 6000
# The Metachecker class connects to the Freeciv-web metaserver, gets the number of available
# Freeciv-web server instances, and launches new servers if needed.
class metachecker():
def __init__(self):
self.server_list = []
if not os.path.isfile(settings_file):
print("ERROR: Publite2 isn't setup correctly. Copy settings.ini.dist to settings.ini " +
"and update it do match your system.")
sys.exit(1)
settings = configparser.ConfigParser()
settings.read(settings_file)
self.server_capacity_single = int(settings.get("Resource usage", "server_capacity_single",
fallback = 5))
self.server_capacity_multi = int(settings.get("Resource usage", "server_capacity_multi",
fallback = 2))
self.server_capacity_pbem = int(settings.get("Resource usage", "server_capacity_pbem",
fallback = 2))
self.server_limit = int(settings.get("Resource usage", "server_limit",
fallback = 250))
self.savesdir = settings.get("Config", "save_directory",
fallback = "/var/lib/tomcat8/webapps/data/savegames/")
self.check_count = 0;
self.total = 0;
self.single = 0;
self.multi = 0;
self.pbem = 0;
self.longturn = set()
self.html_doc = "-";
self.last_http_status = -1;
s = PubStatus(self)
s.start();
def check(self, port):
while 1:
try:
time.sleep(1);
conn = http.client.HTTPConnection(metahost, metaport);
conn.request("GET", statuspath);
r1 = conn.getresponse();
self.check_count += 1;
self.last_http_status = r1.status;
if (r1.status == 200):
self.html_doc = r1.read()
meta_status = self.html_doc.decode('ascii').split(";");
if (len(meta_status) == 5):
self.total = int(meta_status[1]);
self.single = int(meta_status[2]);
self.multi = int(meta_status[3]);
self.pbem = int(meta_status[4]);
#Check if every server on our list is still alive. If not, remove it
#so it can be restarted in the future.
new_server_list = self.server_list
for index, server in enumerate(self.server_list):
if not server.is_alive():
del new_server_list[index]
if server.gametype == "longturn":
self.longturn.remove(server.scripttype)
self.server_list = new_server_list
fork_bomb_preventer = (self.total == 0 and self.server_limit < len(self.server_list))
if fork_bomb_preventer:
print("Error: Have tried to start more than " + str(self.server_limit)
+ " servers (the server limit) but according to the"
+ " metaserver it has found none.");
# start LongTurn games, one per pass
lt_scripts = glob.glob('LT*.serv')
for script in lt_scripts:
if script not in self.longturn:
new_server = Civlauncher("longturn", script, port, metahost + ":" + str(metaport) + metapath, self.savesdir)
self.server_list.append(new_server)
new_server.start()
port += 1
self.longturn.add(script)
break
while (self.single < self.server_capacity_single
and self.total <= self.server_limit
and not fork_bomb_preventer):
time.sleep(1)
new_server = Civlauncher(game_types[0], game_types[0], port, metahost + ":" + str(metaport) + metapath, self.savesdir);
self.server_list.append(new_server);
new_server.start();
port += 1;
self.total += 1;
self.single += 1;
while (self.multi < self.server_capacity_multi
and self.total <= self.server_limit
and not fork_bomb_preventer):
time.sleep(1)
new_server = Civlauncher(game_types[1], game_types[1], port, metahost + ":" + str(metaport) + metapath, self.savesdir)
self.server_list.append(new_server);
new_server.start();
port += 1;
self.total += 1;
self.multi += 1;
while (self.pbem < self.server_capacity_pbem
and self.total <= self.server_limit
and not fork_bomb_preventer):
time.sleep(1)
new_server = Civlauncher(game_types[2], game_types[2], port, metahost + ":" + str(metaport) + metapath, self.savesdir)
self.server_list.append(new_server);
new_server.start();
port += 1;
self.total += 1;
self.pbem += 1;
else:
print("Error: Invalid metaserver status");
except Exception as e:
self.html_doc = ("Error: Publite2 is unable to connect to Freeciv-web metaserver on http://" +
metahost + metapath + ", error" + str(e));
print(self.html_doc);
finally:
conn.close();
time.sleep(metachecker_interval);
if __name__ == '__main__':
#perform a test-request to the Metaserver
try:
conn = http.client.HTTPConnection(metahost, metaport);
conn.request("GET", statuspath);
r1 = conn.getresponse();
except Exception as e:
print("Error: Publite2 is unable to connect to Freeciv-web metaserver on http://"
+ metahost + metapath + ", error" + str(e));
sys.exit(1)
finally:
conn.close();
# start the initial Freeciv-web servers
mc = metachecker()
for type in game_types:
new_server = Civlauncher(type, type, port, metahost + ":" + str(metaport) + metapath, mc.savesdir)
mc.server_list.append(new_server);
new_server.start();
port += 1;
print("Publite2 started!");
time.sleep(20);
mc.check(port);