X-Git-Url: https://git.llucax.com/software/pymin.git/blobdiff_plain/8a2314d03fffc10b668349592de9d991446daed2..eb9820e75fe3861fd56e0635171f3bcc171ccbaa:/pymin/services/util.py diff --git a/pymin/services/util.py b/pymin/services/util.py index d1788fc..a7ec0e4 100644 --- a/pymin/services/util.py +++ b/pymin/services/util.py @@ -11,17 +11,18 @@ except ImportError: from pymin.dispatcher import Handler, handler, HandlerError, \ CommandNotFoundError +from pymin.seqtools import Sequence -DEBUG = False -#DEBUG = True +#DEBUG = False +DEBUG = True -__ALL__ = ('Error', 'ReturnNot0Error', 'ExecutionError', 'ItemError', - 'ItemAlreadyExistsError', 'ItemNotFoundError', 'ContainerError', - 'ContainerNotFoundError', 'call', 'get_network_devices', - 'Persistent', 'Restorable', 'ConfigWriter', 'ServiceHandler', - 'RestartHandler', 'ReloadHandler', 'InitdHandler', 'SubHandler', - 'DictSubHandler', 'ListSubHandler', 'ComposedSubHandler', - 'ListComposedSubHandler', 'DictComposedSubHandler') +__ALL__ = ('Error', 'ExecutionError', 'ItemError', 'ItemAlreadyExistsError', + 'ItemNotFoundError', 'ContainerError', 'ContainerNotFoundError', + 'call', 'get_network_devices', 'Persistent', 'Restorable', + 'ConfigWriter', 'ServiceHandler', 'RestartHandler', + 'ReloadHandler', 'InitdHandler', 'SubHandler', 'DictSubHandler', + 'ListSubHandler', 'ComposedSubHandler', 'ListComposedSubHandler', + 'DictComposedSubHandler', 'Device','Address') class Error(HandlerError): r""" @@ -34,22 +35,6 @@ class Error(HandlerError): """ pass -class ReturnNot0Error(Error): - r""" - ReturnNot0Error(return_value) -> ReturnNot0Error instance. - - A command didn't returned the expected 0 return value. - - return_value - Return value returned by the command. - """ - - def __init__(self, return_value): - r"Initialize the object. See class documentation for more info." - self.return_value = return_value - - def __unicode__(self): - return 'The command returned %d' % self.return_value - class ExecutionError(Error): r""" ExecutionError(command, error) -> ExecutionError instance. @@ -152,22 +137,75 @@ class ContainerNotFoundError(ContainerError): r"Initialize the object. See class documentation for more info." self.message = u'Container not found: "%s"' % key +class Address(Sequence): + def __init__(self, ip, netmask, broadcast=None, peer=None): + self.ip = ip + self.netmask = netmask + self.broadcast = broadcast + self.peer = peer + def update(self, netmask=None, broadcast=None): + if netmask is not None: self.netmask = netmask + if broadcast is not None: self.broadcast = broadcast + def as_tuple(self): + return (self.ip, self.netmask, self.broadcast, self.peer) + + +class Device(Sequence): + def __init__(self, name, mac, ppp): + self.name = name + self.mac = mac + self.ppp = ppp + self.addrs = dict() + self.routes = list() + def as_tuple(self): + return (self.name, self.mac, self.addrs) + + def get_network_devices(): - p = subprocess.Popen(('ip', 'link', 'list'), stdout=subprocess.PIPE, + p = subprocess.Popen(('ip', '-o', 'link'), stdout=subprocess.PIPE, close_fds=True) string = p.stdout.read() p.wait() d = dict() - i = string.find('eth') - while i != -1: - eth = string[i:i+4] - m = string.find('link/ether', i+4) - mac = string[ m+11 : m+11+17] - d[eth] = mac - i = string.find('eth', m+11+17) + devices = string.splitlines() + for dev in devices: + mac = '' + if dev.find('link/ether') != -1: + i = dev.find('link/ether') + mac = dev[i+11 : i+11+17] + i = dev.find(':') + j = dev.find(':', i+1) + name = dev[i+2: j] + d[name] = Device(name,mac,False) + elif dev.find('link/ppp') != -1: + i = dev.find('link/ppp') + mac = '00:00:00:00:00:00' + i = dev.find(':') + j = dev.find(':', i+1) + name = dev[i+2 : j] + d[name] = Device(name,mac,True) + #since the device is ppp, get the address and peer + try: + p = subprocess.Popen(('ip', '-o', 'addr', 'show', name), stdout=subprocess.PIPE, + close_fds=True, stderr=subprocess.PIPE) + string = p.stdout.read() + p.wait() + addrs = string.splitlines() + inet = addrs[1].find('inet') + peer = addrs[1].find('peer') + bar = addrs[1].find('/') + from_addr = addrs[1][inet+5 : peer-1] + to_addr = addrs[1][peer+5 : bar] + d[name].addrs[from_addr] = Address(from_addr,24, peer=to_addr) + except IndexError: + pass return d +def get_peers(): + p = subprocess.Popen(('ip', '-o', 'addr'), stdout=subprocess.PIPE, + close_fds=True) + def call(command, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE, close_fds=True, universal_newlines=True, **kw): @@ -178,13 +216,11 @@ def call(command, stdin=subprocess.PIPE, stdout=subprocess.PIPE, return try: print 'Executing command:', command - r = subprocess.call(command, stdin=stdin, stdout=stdout, stderr=stderr, - universal_newlines=universal_newlines, - close_fds=close_fds, **kw) + r = subprocess.check_call(command, stdin=stdin, stdout=stdout, + stderr=stderr, close_fds=close_fds, + universal_newlines=universal_newlines, **kw) except Exception, e: raise ExecutionError(command, e) - if r is not 0: - raise ExecutionError(command, ReturnNot0Error(r)) class Persistent: r"""Persistent([attrs[, dir[, ext]]]) -> Persistent. @@ -294,9 +330,6 @@ class Restorable(Persistent): r"_restore() -> bool :: Restore persistent data or create a default." try: self._load() - # TODO tener en cuenta servicios que hay que levantar y los que no - if hasattr(self, 'commit'): # TODO deberia ser reload y/o algo para comandos - self.commit() return True except IOError: for (k, v) in self._restorable_defaults.items(): @@ -308,8 +341,6 @@ class Restorable(Persistent): self._dump() if hasattr(self, '_write_config'): self._write_config() - if hasattr(self, 'reload'): - self.reload() return False class ConfigWriter: @@ -437,7 +468,7 @@ class ConfigWriter: self._write_single_config(t) -class ServiceHandler(Handler): +class ServiceHandler(Handler, Restorable): r"""ServiceHandler([start[, stop[, restart[, reload]]]]) -> ServiceHandler. This is a helper class to inherit from to automatically handle services @@ -468,26 +499,63 @@ class ServiceHandler(Handler): reload=reload).items(): if action is not None: setattr(self, '_service_%s' % name, action) + self._persistent_attrs = list(self._persistent_attrs) + self._persistent_attrs.append('_service_running') + if '_service_running' not in self._restorable_defaults: + self._restorable_defaults['_service_running'] = False + self._restore() + if self._service_running: + self._service_running = False + self.start() @handler(u'Start the service.') def start(self): r"start() -> None :: Start the service." - call(self._service_start) + if not self._service_running: + if callable(self._service_start): + self._service_start() + else: + call(self._service_start) + self._service_running = True + self._dump_attr('_service_running') @handler(u'Stop the service.') def stop(self): r"stop() -> None :: Stop the service." - call(self._service_stop) + if self._service_running: + if callable(self._service_stop): + self._service_stop() + else: + call(self._service_stop) + self._service_running = False + self._dump_attr('_service_running') @handler(u'Restart the service.') def restart(self): r"restart() -> None :: Restart the service." - call(self._service_restart) + if callable(self._service_restart): + self._service_restart() + else: + call(self._service_restart) + self._service_running = True + self._dump_attr('_service_running') @handler(u'Reload the service config (without restarting, if possible).') def reload(self): r"reload() -> None :: Reload the configuration of the service." - call(self._service_reload) + if self._service_running: + if callable(self._service_reload): + self._service_reload() + else: + call(self._service_reload) + + @handler(u'Tell if the service is running.') + def running(self): + r"reload() -> None :: Reload the configuration of the service." + if self._service_running: + return 1 + else: + return 0 class RestartHandler(Handler): r"""RestartHandler() -> RestartHandler :: Provides generic restart command. @@ -513,9 +581,11 @@ class ReloadHandler(Handler): @handler(u'Reload the service config (alias to restart).') def reload(self): r"reload() -> None :: Reload the configuration of the service." - self.restart() + if hasattr(self, '_service_running') and self._service_running: + self.restart() -class InitdHandler(Handler): +class InitdHandler(ServiceHandler): + # TODO update docs, declarative style is depracated r"""InitdHandler([initd_name[, initd_dir]]) -> InitdHandler. This is a helper class to inherit from to automatically handle services @@ -544,26 +614,20 @@ class InitdHandler(Handler): self._initd_name = initd_name if initd_dir is not None: self._initd_dir = initd_dir - - @handler(u'Start the service.') - def start(self): - r"start() -> None :: Start the service." - call((path.join(self._initd_dir, self._initd_name), 'start')) - - @handler(u'Stop the service.') - def stop(self): - r"stop() -> None :: Stop the service." - call((path.join(self._initd_dir, self._initd_name), 'stop')) - - @handler(u'Restart the service.') - def restart(self): - r"restart() -> None :: Restart the service." - call((path.join(self._initd_dir, self._initd_name), 'restart')) - - @handler(u'Reload the service config (without restarting, if possible).') - def reload(self): - r"reload() -> None :: Reload the configuration of the service." - call((path.join(self._initd_dir, self._initd_name), 'reload')) + actions = dict() + for action in ('start', 'stop', 'restart', 'reload'): + actions[action] = (path.join(self._initd_dir, self._initd_name), + action) + ServiceHandler.__init__(self, **actions) + + def handle_timer(self): + p = subprocess.Popen(('pgrep', '-f', self._initd_name), + stdout=subprocess.PIPE) + pid = p.communicate()[0] + if p.returncode == 0 and len(pid) > 0: + self._service_running = True + else: + self._service_running = False class TransactionalHandler(Handler): r"""Handle command transactions providing a commit and rollback commands. @@ -586,9 +650,10 @@ class TransactionalHandler(Handler): r"commit() -> None :: Commit the changes and reload the service." if hasattr(self, '_dump'): self._dump() + unchanged = False if hasattr(self, '_write_config'): - self._write_config() - if hasattr(self, 'reload'): + unchanged = self._write_config() + if not unchanged and hasattr(self, 'reload'): self.reload() @handler(u'Discard all the uncommited changes.') @@ -627,6 +692,8 @@ class ParametersHandler(Handler): if not param in self.params: raise ParameterNotFoundError(param) self.params[param] = value + if hasattr(self, '_update'): + self._update = True @handler(u'Get a service parameter.') def get(self, param): @@ -1010,6 +1077,8 @@ class DictComposedSubHandler(ComposedSubHandler): if __name__ == '__main__': + import sys + # Execution tests class STestHandler1(ServiceHandler): _service_start = ('service', 'start') @@ -1112,3 +1181,5 @@ if __name__ == '__main__': os.rmdir('templates') print + print get_network_devices() +