some code...

lib/core/command.py

@@ -0,0 +1,28 @@
+import subprocess
+
+
+class Command:
+    def __init__(self, command):
+        self.command = command
+        self.output = ""
+        self.error = ""
+
+    def __str__(self):
+        return command
+
+    def hasProcessed(self):
+        return self.output != "" and self.error != ""
+
+    def doProcess(self):
+        process = subprocess.Popen([self.command], stdout=subprocess.PIPE)
+        self.output, self.error = process.communicate()
+
+    def getOutput(self):
+        if not self.hasProcessed():
+            self.doProcess()
+        return self.output
+
+    def getError(self):
+        if not self.hasProcessed():
+            self.doProcess()
+        return self.error

lib/core/daemon.py

@@ -0,0 +1,132 @@
+#!/usr/bin/env python
+
+import sys, os, time, atexit
+from signal import SIGTERM
+
+
+class Daemon:
+    """
+    A generic daemon class.
+
+    Usage: subclass the Daemon class and override the run() method
+    """
+
+    def __init__(self, pidfile, stdin='/dev/null', stdout='/dev/null', stderr='/dev/null'):
+        self.stdin = stdin
+        self.stdout = stdout
+        self.stderr = stderr
+        self.pidfile = pidfile
+
+    def daemonize(self):
+        """
+        do the UNIX double-fork magic, see Stevens' "Advanced
+        Programming in the UNIX Environment" for details (ISBN 0201563177)
+        http://www.erlenstar.demon.co.uk/unix/faq_2.html#SEC16
+        """
+        try:
+            pid = os.fork()
+            if pid > 0:
+                # exit first parent
+                sys.exit(0)
+        except OSError, e:
+            sys.stderr.write("fork #1 failed: %d (%s)\n" % (e.errno, e.strerror))
+            sys.exit(1)
+
+        # decouple from parent environment
+        os.chdir("/")
+        os.setsid()
+        os.umask(0)
+
+        # do second fork
+        try:
+            pid = os.fork()
+            if pid > 0:
+                # exit from second parent
+                sys.exit(0)
+        except OSError, e:
+            sys.stderr.write("fork #2 failed: %d (%s)\n" % (e.errno, e.strerror))
+            sys.exit(1)
+
+        # redirect standard file descriptors
+        sys.stdout.flush()
+        sys.stderr.flush()
+        si = file(self.stdin, 'r')
+        so = file(self.stdout, 'a+')
+        se = file(self.stderr, 'a+', 0)
+        os.dup2(si.fileno(), sys.stdin.fileno())
+        os.dup2(so.fileno(), sys.stdout.fileno())
+        os.dup2(se.fileno(), sys.stderr.fileno())
+
+        # write pidfile
+        atexit.register(self.delpid)
+        pid = str(os.getpid())
+        file(self.pidfile, 'w+').write("%s\n" % pid)
+
+    def delpid(self):
+        os.remove(self.pidfile)
+
+    def start(self):
+        """
+        Start the daemon
+        """
+        # Check for a pidfile to see if the daemon already runs
+        try:
+            pf = file(self.pidfile, 'r')
+            pid = int(pf.read().strip())
+            pf.close()
+        except IOError:
+            pid = None
+
+        if pid:
+            message = "pidfile %s already exist. daemon already running?\n"
+            sys.stderr.write(message % self.pidfile)
+            sys.exit(1)
+
+        # Start the daemon
+        self.daemonize()
+        self.run()
+
+    def stop(self):
+        """
+        Stop the daemon
+        """
+        # Get the pid from the pidfile
+        try:
+            pf = file(self.pidfile, 'r')
+            pid = int(pf.read().strip())
+            pf.close()
+        except IOError:
+            pid = None
+
+        if not pid:
+            message = "pidfile %s does not exist. daemon not running?\n"
+            sys.stderr.write(message % self.pidfile)
+            return # not an error in a restart
+
+        # Try killing the daemon process
+        try:
+            while 1:
+                os.kill(pid, SIGTERM)
+                time.sleep(0.1)
+        except OSError, err:
+            err = str(err)
+            if err.find("No such process") > 0:
+                if os.path.exists(self.pidfile):
+                    os.remove(self.pidfile)
+            else:
+                print str(err)
+                sys.exit(1)
+
+    def restart(self):
+        """
+        Restart the daemon
+        """
+        self.stop()
+        self.start()
+
+    def run(self):
+        """
+        You should override this method when you subclass Daemon.
+        It will be called after the process has been
+        daemonized by start() or restart().
+        """

lib/core/job.py

@@ -0,0 +1,12 @@
+"""
+This is what job_function needs as parameter for each job to succesfully 
+execute.
+"""
+
+
+class Job:
+    def __init__(self, command=None, members=None, host=None, service=None):
+        self.command = command
+        self.members = members
+        self.host = host
+        self.service = service

lib/core/linspector_daemon.py

@@ -0,0 +1,16 @@
+from ..core import logger
+from ..core.daemon import Daemon
+
+
+class LinspectorDaemon(Daemon):
+    def run(self):
+        while True:
+            try:
+                a = 2
+                logger.writeLogToFile(_logfile, "Running!")
+                print "running!"
+            except Exception as err:
+                #logger.writeLogToFile(_logfile, str(err))
+                print "failed"
+                sys.exit(1)
+            time.sleep(1)

lib/core/logger.py

@@ -0,0 +1,40 @@
+from datetime import datetime
+
+DEBUG = "[debug]"
+NOTICE = "[notice]"
+WARNING = "[warning]"
+
+
+def logVerbose(message, verbose=True):
+    if verbose:
+        print DEBUG + " " + str(message)
+
+
+def logNotice(message, verbose=True):
+    if verbose:
+        print NOTICE + " " + str(message)
+
+
+def logWarning(message):
+    print WARNING + " " + message
+
+
+def logWarningConfig(file="file", missing="missing"):
+    logWarning("in " + file + ": The " + missing + " is not defined")
+
+
+def writeLogToFile(logfile, message):
+    f = open(logfile, 'a')
+    f.write("[" + str(datetime.now()) + "] " + message + '\n')
+    f.close()
+
+
+class Logger:
+    def __init__(self, logfile="/dev/null"):
+        self.logfile = logfile
+
+    def logSomething(message, verbose=False):
+        f = open(self.logfile, 'a')
+        f.write("[" + str(datetime.now()) + "] " + message + '\n')
+        f.close()
+

lib/core/logger.py.orig

@@ -0,0 +1,25 @@
+from datetime import datetime
+
+DEBUG = "[debug]"
+NOTICE = "[notice]"
+WARNING = "[warning]"
+
+def logVerbose(message, verbose = False):
+  if verbose:
+    print DEBUG + " " + str(message)
+
+def logNotice(message, verbose = False):
+  if verbose:
+    print NOTICE + " " + str(message)
+
+def logWarning(message):
+  print WARNING + " " + message
+
+def logWarningConfig(file = "file", missing = "missing"):
+  logWarning("in " + file + ": The " + missing + " is not defined")
+  
+def writeLogToFile(logfile, message):
+  f = open(logfile, 'a')
+  f.write("[" + str(datetime.now()) + "] " + message + '\n')
+  f.close()
+