Brathuhn is now a daemon

log_rotate.py

@@ -1,28 +0,0 @@
-#!/usr/bin/python
-
-import os,sys
-import time,datetime
-
-LOG_FILE = "./brathuhn.log"
-ROT_SIZE = 2**20
-ROT_CRITICAL = 2**20+50*2**10
-
-f = open(LOG_FILE,'wb')
-
-cnt = 0
-
-c = sys.stdin.read(1)
-while c!='':
-	f.write(c)
-	cnt+=1
-	if c=='\n' and cnt>=ROT_SIZE or cnt>=ROT_CRITICAL:
-		f.close()
-		os.rename(LOG_FILE, LOG_FILE+date.strftime("_%Y-%m-%d_%H-%M-%S") )
-		f = open(LOG_FILE,'wb')
-
-		date=datetime.datetime.fromtimestamp(time.time())
-		print "rotate",cnt,date.strftime("%Y-%m-%d %H:%M:%S")
-
-		cnt = 0
-	c = sys.stdin.read(1)
-	

main.py

@@ -2,16 +2,19 @@
 # -*- coding: utf-8 -*-
 
 import sys, os
-
 cwd = os.getcwd()
 sys.path.append(os.path.join(cwd,"sys"))
 sys.path.append(os.path.join(cwd,"modules","active"))
 
-import brathuhn
+import demonize, brathuhn
+#Demonize
+if not demonize.demonize('./pid',False,'log.txt'):
+	sys.stderr.write("Daemon already running")
+	sys.exit(1)
 
+#Inport modules
 modules = []
 files = os.listdir( os.path.join(cwd,"modules","active") )
-
 for f in files:
 	if f.endswith(".py"):
 		mod = f[:-3]
@@ -19,10 +22,14 @@ for f in files:
 		mod = f[:-4]
 	if not mod in modules:
 		modules.append(mod)
-
 for mod in modules:
 	__import__(mod)
 
+print "PID:", os.getpid()
+
+#Start Brathuhn
 brathuhn.connect_and_join()
 brathuhn.loop()
 
+ 
+

sys/brathuhn.py

@@ -1,5 +1,5 @@
 import xmpp, os, sys, time, traceback, stream_ft
-import threading
+import threading, errno, select
 
 from config import *
 
@@ -281,16 +281,21 @@ def loop():
 		except KeyboardInterrupt:
 			print "keyboard interrupt, quitting..."
 			sys.exit(0)
+		except select.error as e:
+			if not (e.args and e.args[0] == errno.EINTR):
+				print_error()
 		except:
-			print "-------ERROR OCCURED-------"
-			exc_type, exc_value, exc_traceback = sys.exc_info()
-			traceback.print_exc(file=sys.stdout)
-			if not cl.connected:				
-				s=MIN_CONNECT_INTERVAL-(time.time()-last_connect)
-				if s>0:
-					time.sleep(s)
-				connect_and_join()
-			print "---------------------------"
+			print_error()
+
+def print_error():
+	print "-------ERROR OCCURED-------"
+	traceback.print_exc(file=sys.stdout)
+	if not cl.connected:				
+		s=MIN_CONNECT_INTERVAL-(time.time()-last_connect)
+		if s>0:
+			time.sleep(s)
+		connect_and_join()
+	print "---------------------------"
 
 def callAt(func,_time,*args):
 	"""Call a function at given time; The call is not very exact but it is 

sys/demonize.py

@@ -0,0 +1,73 @@
+import os, sys, signal
+
+log_file = None
+log_path = None
+
+def demonize(pid_file, force=False, logfile=None):
+	global log_file
+	global log_path
+
+	# check if pid file exists and return if not a forced start
+	if os.path.exists(pid_file) and not force:	
+		return False
+
+	## Demonize
+	if os.fork():
+		exit(0)
+	os.umask(0)
+	os.setsid() 
+	if os.fork(): 
+		exit(0)
+
+	pid = open(pid_file,'w')
+	pid.write(str(os.getpid()))
+	pid.close()
+
+
+	# The fileno is accessable after the first write
+	sys.stdout.write('\0')
+	sys.stderr.write('\0')
+	sys.stdout.flush()
+	sys.stderr.flush()	
+
+	ignore = open('/dev/null', 'r+')
+	os.dup2(ignore.fileno(), sys.stdin.fileno())
+
+	if type(logfile)==file:
+		log_file = logfile
+ 	elif logfile!=None:
+		log_file = open(logfile,'w')
+		log_path = logfile
+	else:
+		log_file = ignore
+	os.dup2(log_file.fileno(), sys.stdout.fileno())
+	os.dup2(log_file.fileno(), sys.stderr.fileno())
+
+	signal.signal(signal.SIGHUP, __sys_call(__sighup_handler) )
+	return True
+
+# decorator to make system call methods safe from EINTR
+def __sys_call(func):
+    def __func(*args, **kwargs):
+        try:
+                rv = func(*args, **kwargs)
+        except exception as e:
+            if e.args and e.args[0] == EINTR:
+                pass
+        return rv
+    return __func
+
+def __sighup_handler(sig,dontcare):
+	global log_path
+	global log_file
+	import traceback
+	try:
+		if log_path != None:
+			log_file.seek(0)
+			log_file.close()
+			log_file = open(log_path,'w')		
+			os.dup2(log_file.fileno(), sys.stdout.fileno())
+			os.dup2(log_file.fileno(), sys.stderr.fileno())
+	except:
+		traceback.print_exc(file=sys.stdout)
+		sys.exit(1)