Merge baryon.com.ar:workspace/pymin

[software/pymin.git] / pymin / services / ppp / __init__.py

diff --git a/pymin/services/ppp/__init__.py b/pymin/services/ppp/__init__.py
index 868b6d59330729a946309128ef91e85f99c9a31a..db2a53541857d45f5f9bb4884563c657e81572d6 100644 (file)
--- a/pymin/services/ppp/__init__.py
+++ b/pymin/services/ppp/__init__.py
@@ -1,11 +1,14 @@
 # vim: set encoding=utf-8 et sw=4 sts=4 :
 
+import os
+import subprocess
 from os import path
+from signal import SIGTERM
 
 from pymin.seqtools import Sequence
 from pymin.dispatcher import Handler, handler, HandlerError
-from pymin.services.util import Restorable, ConfigWriter \
-                                ,TransactionalHandler, DictSubHandler, call
+from pymin.services.util import Restorable, ConfigWriter, ReloadHandler, \
+                                TransactionalHandler, DictSubHandler, call
 
 __ALL__ = ('PppHandler',)
 
@@ -32,6 +35,7 @@ class Connection(Sequence):
         self.username = username
         self.password = password
         self.type = type
+        self._running = False
         if type == 'OE':
             if not 'device' in kw:
                 raise ConnectionError('Bad arguments for type=OE')
@@ -70,11 +74,11 @@ class ConnectionHandler(DictSubHandler):
     _cont_subhandler_attr = 'conns'
     _cont_subhandler_class = Connection
 
-class PppHandler(Restorable, ConfigWriter, TransactionalHandler):
+class PppHandler(Restorable, ConfigWriter, ReloadHandler, TransactionalHandler):
 
     handler_help = u"Manage ppp service"
 
-    _persistent_attrs = ('conns')
+    _persistent_attrs = ['conns']
 
     _restorable_defaults = dict(
         conns  = dict(),
@@ -89,31 +93,84 @@ class PppHandler(Restorable, ConfigWriter, TransactionalHandler):
         self._config_writer_cfg_dir = config_dir
         self._config_build_templates()
         self._restore()
+        for conn in self.conns.values():
+            if conn._running:
+                conn._running = False
+                self.start(conn.name)
         self.conn = ConnectionHandler(self)
 
-    @handler('Starts the service')
-    def start(self, name):
-        if name in self.conns:
-            call(['pppd','call', name],stdout=None, stderr=None)
-            #print ('pon', name)
-        else:
-            raise ConnectionNotFoundError(name)
-
-    @handler('Stops the service')
-    def stop(self, name):
+    @handler(u'Start one or all the connections.')
+    def start(self, name=None):
+        names = [name]
+        if name is None:
+            names = self.conns.keys()
+        for name in names:
+            if name in self.conns:
+                if not self.conns[name]._running:
+                    call(('pppd', 'call', name))
+                    self.conns[name]._running = True
+                    self._dump_attr('conns')
+            else:
+                raise ConnectionNotFoundError(name)
+
+    @handler(u'Stop one or all the connections.')
+    def stop(self, name=None):
+        names = [name]
+        if name is None:
+            names = self.conns.keys()
+        for name in names:
+            if name in self.conns:
+                if self.conns[name]._running:
+                    if path.exists('/var/run/ppp-' + name + '.pid'):
+                        pid = file('/var/run/ppp-' + name + '.pid').readline()
+                        try:
+                            os.kill(int(pid.strip()), SIGTERM)
+                        except OSError:
+                            pass # XXX report error?
+                    self.conns[name]._running = False
+                    self._dump_attr('conns')
+            else:
+                raise ConnectionNotFoundError(name)
+
+    @handler(u'Restart one or all the connections (even disconnected ones).')
+    def restart(self, name=None):
+        names = [name]
+        if name is None:
+            names = self.conns.keys()
+        for name in names:
+            self.stop(name)
+            self.start(name)
+
+    @handler(u'Restart only one or all the already running connections.')
+    def reload(self, name=None):
+        r"reload() -> None :: Reload the configuration of the service."
+        names = [name]
+        if name is None:
+            names = self.conns.keys()
+        for name in names:
+            if self.conns[name]._running:
+                self.stop(name)
+                self.start(name)
+
+    @handler(u'Tell if the service is running.')
+    def running(self, name=None):
+        r"reload() -> None :: Reload the configuration of the service."
+        if name is None:
+            return [c.name for c in self.conns.values() if c._running]
         if name in self.conns:
-            if path.exists('/var/run/ppp-' + name + '.pid'):
-                pid = file('/var/run/ppp-' + name + '.pid').readline().strip()
-                call(['kill',pid],stdout=None, stderr=None)
-            #print ('poff', name)
+            return int(self.conns[name]._running)
         else:
             raise ConnectionNotFoundError(name)
 
-    @handler('Reloads the service')
-    def reload(self):
-        for conn in self.conns.values():
-            self.stop(conn.name)
-            self.start(conn.name)
+    def handle_timer(self):
+        for c in self.conns.values():
+            p = subprocess.Popen(('pgrep', '-f', 'pppd call ' + c.name),
+                                    stdout=subprocess.PIPE)
+            pid = p.communicate()[0]
+            if p.wait() == 0 and len(pid) > 0:
+                c._running = True
+            else:
+                c._running = False
 
     def _write_config(self):
         r"_write_config() -> None :: Generate all the configuration files."
@@ -139,6 +196,7 @@ class PppHandler(Restorable, ConfigWriter, TransactionalHandler):
 
 
 if __name__ == '__main__':
+
     p = PppHandler()
     p.conn.add('ppp_c','nico','nico',type='PPP',device='tty0')
     p.conn.add('pppoe_c','fede','fede',type='OE',device='tty1')
@@ -146,3 +204,4 @@ if __name__ == '__main__':
     p.commit()
     print p.conn.list()
     print p.conn.show()
+