Windows support (freezing).

Client notification support.
Hypervisor manager changes.
IOU reload support.
Switch to non-dynamic module loading because of a multiprocessing
problem on Windows.

gns3server/main.py

@@ -18,6 +18,7 @@
 
 import datetime
 import sys
+import multiprocessing
 import logging
 import tornado.options
 import gns3server
@@ -34,6 +35,10 @@ def main():
     Entry point for GNS3 server
     """
 
+    if sys.platform.startswith("win"):
+        # necessary on Windows to use freezing software
+        multiprocessing.freeze_support()
+
     current_year = datetime.date.today().year
     print("GNS3 server version {}".format(gns3server.__version__))
     print("Copyright (c) 2007-{} GNS3 Technologies Inc.".format(current_year))

gns3server/modules/__init__.py

@@ -15,4 +15,13 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
+import sys
 from .base import IModule
+from .dynamips import Dynamips
+from .iou import IOU
+
+MODULES = [Dynamips]
+
+if sys.platform.startswith("linux"):
+    # IOU runs only on Linux
+    MODULES.append(IOU)

gns3server/modules/base.py

@@ -19,6 +19,7 @@
 Base class (interface) for modules
 """
 
+import sys
 import gns3server.jsonrpc as jsonrpc
 import multiprocessing
 import zmq
@@ -109,7 +110,10 @@ class IModule(multiprocessing.Process):
             log.warning("Module {} got signal {}, exiting...".format(self.name, signum))
             self.stop()
 
-        for sig in [signal.SIGTERM, signal.SIGINT, signal.SIGHUP, signal.SIGQUIT]:
+        signals = [signal.SIGTERM, signal.SIGINT]
+        if not sys.platform.startswith("win"):
+            signals.extend([signal.SIGHUP, signal.SIGQUIT])
+        for sig in signals:
             signal.signal(sig, signal_handler)
 
         log.info("{} module running with PID {}".format(self.name, self.pid))
@@ -179,6 +183,20 @@ class IModule(multiprocessing.Process):
                                                                                               self._current_call_id))
         self._stream.send_json(response)
 
+    def send_notification(self, results):
+        """
+        Sends a notification
+
+        :param results: JSON results to the ZeroMQ server
+        """
+
+        jsonrpc_response = jsonrpc.JSONRPCNotification(results)()
+
+        # add session to the response
+        response = [self._current_session, jsonrpc_response]
+        log.debug("ZeroMQ client ({}) sending: {}".format(self.name, response))
+        self._stream.send_json(response)
+
     def _decode_request(self, request):
         """
         Decodes the request to JSON.

gns3server/modules/dynamips/__init__.py

@@ -102,6 +102,7 @@ class Dynamips(IModule):
         IModule.__init__(self, name, *args, **kwargs)
 
         self._hypervisor_manager = None
+        self._hypervisor_manager_settings = {}
         self._remote_server = False
         self._routers = {}
         self._ethernet_switches = {}
@@ -110,6 +111,8 @@ class Dynamips(IModule):
         self._ethernet_hubs = {}
         self._projects_dir = kwargs["projects_dir"]
         self._tempdir = kwargs["temp_dir"]
+        self._working_dir = self._projects_dir
+        self._dynamips = ""
 
         #self._callback = self.add_periodic_callback(self.test, 1000)
         #self._callback.start()
@@ -161,6 +164,34 @@ class Dynamips(IModule):
         self._remote_server = False
         log.info("dynamips module has been reset")
 
+    def start_hypervisor_manager(self):
+        """
+        Starts the hypervisor manager.
+        """
+
+        # check if Dynamips path exists
+        if not os.path.exists(self._dynamips):
+            raise DynamipsError("Dynamips executable {} doesn't exist".format(self._dynamips))
+
+        # check if Dynamips is executable
+        if not os.access(self._dynamips, os.X_OK):
+            raise DynamipsError("Dynamips {} is not executable".format(self._dynamips))
+
+        # check if the working directory exists
+        if not os.path.exists(self._working_dir):
+            raise DynamipsError("Working directory {} doesn't exist".format(self._working_dir))
+
+        # check if the working directory is writable
+        if not os.access(self._working_dir, os.W_OK):
+            raise DynamipsError("Cannot write to working directory {}".format(self._working_dir))
+
+        log.info("starting the hypervisor manager with Dynamips working directory set to '{}'".format(self._working_dir))
+        self._hypervisor_manager = HypervisorManager(self._dynamips, self._working_dir)
+
+        for name, value in self._hypervisor_manager_settings.items():
+            if hasattr(self._hypervisor_manager, name) and getattr(self._hypervisor_manager, name) != value:
+                setattr(self._hypervisor_manager, name, value)
+
     @IModule.route("dynamips.settings")
     def settings(self, request):
         """
@@ -184,31 +215,23 @@ class Dynamips(IModule):
         #TODO: JSON schema validation
         # starts the hypervisor manager if it hasn't been started yet
         if not self._hypervisor_manager:
-            dynamips_path = request["path"]
+            self._dynamips = request.pop("path")
 
             if "working_dir" in request:
-                working_dir = request["working_dir"]
+                self._working_dir = request.pop("working_dir")
                 log.info("this server is local")
             else:
                 self._remote_server = True
                 log.info("this server is remote")
-                working_dir = self._projects_dir
-
-            #TODO: check if executable
-            if not os.path.exists(dynamips_path):
-                raise DynamipsError("Dynamips executable {} doesn't exist".format(working_dir))
+                self._working_dir = self._projects_dir
 
-            #TODO: check if writable
-            if not os.path.exists(working_dir):
-                raise DynamipsError("Working directory {} doesn't exist".format(working_dir))
+            self._hypervisor_manager_settings = request
 
-            log.info("starting the hypervisor manager with Dynamips working directory set to '{}'".format(working_dir))
-            self._hypervisor_manager = HypervisorManager(dynamips_path, working_dir)
-
-        # apply settings to the hypervisor manager
-        for name, value in request.items():
-            if hasattr(self._hypervisor_manager, name) and getattr(self._hypervisor_manager, name) != value:
-                setattr(self._hypervisor_manager, name, value)
+        else:
+            # apply settings to the hypervisor manager
+            for name, value in request.items():
+                if hasattr(self._hypervisor_manager, name) and getattr(self._hypervisor_manager, name) != value:
+                    setattr(self._hypervisor_manager, name, value)
 
     @IModule.route("dynamips.echo")
     def echo(self, request):

gns3server/modules/dynamips/backends/atmsw.py

@@ -47,6 +47,9 @@ class ATMSW(object):
             name = request["name"]
 
         try:
+            if not self._hypervisor_manager:
+                self.start_hypervisor_manager()
+
             hypervisor = self._hypervisor_manager.allocate_hypervisor_for_simulated_device()
             atmsw = ATMSwitch(hypervisor, name)
         except DynamipsError as e:

gns3server/modules/dynamips/backends/ethhub.py

@@ -46,6 +46,9 @@ class ETHHUB(object):
             name = request["name"]
 
         try:
+            if not self._hypervisor_manager:
+                self.start_hypervisor_manager()
+
             hypervisor = self._hypervisor_manager.allocate_hypervisor_for_simulated_device()
             ethhub = Hub(hypervisor, name)
         except DynamipsError as e:

gns3server/modules/dynamips/backends/ethsw.py

@@ -46,6 +46,9 @@ class ETHSW(object):
             name = request["name"]
 
         try:
+            if not self._hypervisor_manager:
+                self.start_hypervisor_manager()
+
             hypervisor = self._hypervisor_manager.allocate_hypervisor_for_simulated_device()
             ethsw = EthernetSwitch(hypervisor, name)
         except DynamipsError as e:

gns3server/modules/dynamips/backends/frsw.py

@@ -46,6 +46,9 @@ class FRSW(object):
             name = request["name"]
 
         try:
+            if not self._hypervisor_manager:
+                self.start_hypervisor_manager()
+
             hypervisor = self._hypervisor_manager.allocate_hypervisor_for_simulated_device()
             frsw = FrameRelaySwitch(hypervisor, name)
         except DynamipsError as e:

gns3server/modules/dynamips/backends/vm.py

@@ -127,7 +127,7 @@ class VM(object):
         try:
 
             if not self._hypervisor_manager:
-                raise DynamipsError("Dynamips manager is not started")
+                self.start_hypervisor_manager()
 
             hypervisor = self._hypervisor_manager.allocate_hypervisor_for_router(image, ram)
 

gns3server/modules/dynamips/nodes/c7200.py

@@ -67,9 +67,9 @@ class C7200(Router):
 
         # first slot is a mandatory Input/Output controller (based on NPE type)
         if npe == "npe-g2":
-            self._slots[0] = C7200_IO_GE_E()
+            self.slot_add_binding(0, C7200_IO_GE_E())
         else:
-            self._slots[0] = C7200_IO_2FE()
+            self.slot_add_binding(0, C7200_IO_2FE())
 
     def defaults(self):
         """

gns3server/modules/dynamips/nodes/router.py

@@ -1205,7 +1205,8 @@ class Router(object):
                                                                                        slot_id=slot_id))
 
         if adapter == None:
-            return
+            raise DynamipsError("No adapter in slot {slot_id} on router {name}".format(name=self._name,
+                                                                                       slot_id=slot_id))
 
         #FIXME: check if adapter can be removed!
 

gns3server/modules/iou/__init__.py

@@ -45,9 +45,6 @@ class IOU(IModule):
 
     def __init__(self, name, *args, **kwargs):
 
-        if not sys.platform.startswith("linux"):
-            raise IOUError("Sorry the IOU module only works on Linux")
-
         # get the iouyap location
         config = Config.instance()
         iou_config = config.get_section_config(name.upper())
@@ -74,14 +71,14 @@ class IOU(IModule):
         self._udp_start_port_range = 30001
         self._udp_end_port_range = 40001
         self._current_udp_port = self._udp_start_port_range
-        self._host = "127.0.0.1"  #FIXME: used by ZeroMQ...
+        self._host = "127.0.0.1"  # FIXME: used by ZeroMQ...
         self._projects_dir = kwargs["projects_dir"]
         self._tempdir = kwargs["temp_dir"]
         self._working_dir = self._projects_dir
         self._iourc = ""
 
-        #self._callback = self.add_periodic_callback(self.test, 1000)
-        #self._callback.start()
+        self._iou_callback = self.add_periodic_callback(self._check_iou, 5000)
+        self._iou_callback.start()
 
     def stop(self):
         """
@@ -95,6 +92,17 @@ class IOU(IModule):
 
         IModule.stop(self)  # this will stop the I/O loop
 
+    def _check_iou(self):
+
+        for iou_id in self._iou_instances:
+            iou_instance = self._iou_instances[iou_id]
+            if iou_instance.started and not iou_instance.is_running():
+                self.send_notification({"module": self.name,
+                                        "id": iou_id,
+                                        "name": iou_instance.name,
+                                        "message": "IOU is not running"})
+                iou_instance.stop()
+
     @IModule.route("iou.reset")
     def reset(self, request):
         """
@@ -115,6 +123,13 @@ class IOU(IModule):
         self._remote_server = False
         self._current_console_port = self._console_start_port_range
         self._current_udp_port = self._udp_start_port_range
+
+        if self._iourc and os.path.exists(self._iourc):
+            try:
+                os.remove(self._iourc)
+            except EnvironmentError as e:
+                log.warn("could not delete iourc file {}: {}".format(self._iourc, e))
+
         log.info("IOU module has been reset")
 
     @IModule.route("iou.settings")
@@ -360,6 +375,37 @@ class IOU(IModule):
             return
         self.send_response(request)
 
+    @IModule.route("iou.reload")
+    def vm_reload(self, request):
+        """
+        Reloads an IOU instance.
+
+        Mandatory request parameters:
+        - id (IOU identifier)
+
+        Response parameters:
+        - same as original request
+
+        :param request: JSON request
+        """
+
+        if request == None:
+            self.send_param_error()
+            return
+
+        #TODO: JSON schema validation for the request
+        log.debug("received request {}".format(request))
+        iou_id = request["id"]
+        iou_instance = self._iou_instances[iou_id]
+        try:
+            if iou_instance.is_running():
+                iou_instance.stop()
+            iou_instance.start()
+        except IOUError as e:
+            self.send_custom_error(str(e))
+            return
+        self.send_response(request)
+
     @IModule.route("iou.allocate_udp_port")
     def allocate_udp_port(self, request):
         """

gns3server/modules/iou/iou_device.py

@@ -79,6 +79,7 @@ class IOUDevice(object):
         self._ioucon_thead = None
         self._ioucon_thread_stop_event = None
         self._host = host
+        self._started = False
 
         # IOU settings
         self._ethernet_adapters = [EthernetAdapter(), EthernetAdapter()]  # one adapter = 4 interfaces
@@ -295,6 +296,16 @@ class IOUDevice(object):
         log.info("IOU device {name} [id={id}] has been deleted".format(name=self._name,
                                                                        id=self._id))
 
+    @property
+    def started(self):
+        """
+        Returns either this IOU device has been started or not.
+
+        :returns: boolean
+        """
+
+        return self._started
+
     def _update_iouyap_config(self):
         """
         Updates the iouyap.ini file.
@@ -411,6 +422,7 @@ class IOUDevice(object):
                                                      cwd=self._working_dir,
                                                      env=env)
                 log.info("IOU instance {} started PID={}".format(self._id, self._process.pid))
+                self._started = True
             except EnvironmentError as e:
                 log.error("could not start IOU: {}".format(e))
                 raise IOUError("could not start IOU: {}".format(e))
@@ -437,6 +449,7 @@ class IOUDevice(object):
                     log.warn("IOU instance {} PID={} is still running".format(self._id,
                                                                               self._process.pid))
         self._process = None
+        self._started = False
 
         # stop console support
         if self._ioucon_thead:

gns3server/server.py

@@ -23,6 +23,7 @@ import zmq
 from zmq.eventloop import ioloop, zmqstream
 ioloop.install()
 
+import sys
 import os
 import tempfile
 import signal
@@ -37,6 +38,7 @@ from .handlers.jsonrpc_websocket import JSONRPCWebSocket
 from .handlers.version_handler import VersionHandler
 from .handlers.file_upload_handler import FileUploadHandler
 from .module_manager import ModuleManager
+from .modules import MODULES
 
 import logging
 log = logging.getLogger(__name__)
@@ -85,23 +87,38 @@ class Server(object):
         Loads the modules.
         """
 
-        cwd = os.path.dirname(os.path.abspath(__file__))
-        module_path = os.path.join(cwd, 'modules')
-        log.info("loading modules from {}".format(module_path))
-        module_manager = ModuleManager([module_path])
-        module_manager.load_modules()
-        for module in module_manager.get_all_modules():
-            instance = module_manager.activate_module(module,
-                                                      "127.0.0.1",  # ZeroMQ server address
-                                                      self._zmq_port,  # ZeroMQ server port
-                                                      projects_dir=self._projects_dir,
-                                                      temp_dir=self._temp_dir)
-            if not instance:
-                continue
+        #=======================================================================
+        # cwd = os.path.dirname(os.path.abspath(__file__))
+        # module_path = os.path.join(cwd, 'modules')
+        # log.info("loading modules from {}".format(module_path))
+        # module_manager = ModuleManager([module_path])
+        # module_manager.load_modules()
+        # for module in module_manager.get_all_modules():
+        #     instance = module_manager.activate_module(module,
+        #                                               "127.0.0.1",  # ZeroMQ server address
+        #                                               self._zmq_port,  # ZeroMQ server port
+        #                                               projects_dir=self._projects_dir,
+        #                                               temp_dir=self._temp_dir)
+        #     if not instance:
+        #         continue
+        #     self._modules.append(instance)
+        #     destinations = instance.destinations()
+        #     for destination in destinations:
+        #         JSONRPCWebSocket.register_destination(destination, module.name)
+        #     instance.start()  # starts the new process
+        #=======================================================================
+
+        for module in MODULES:
+            instance = module(module.__name__.lower(),
+                              "127.0.0.1",  # ZeroMQ server address
+                              self._zmq_port,  # ZeroMQ server port
+                              projects_dir=self._projects_dir,
+                              temp_dir=self._temp_dir)
+
             self._modules.append(instance)
             destinations = instance.destinations()
             for destination in destinations:
-                JSONRPCWebSocket.register_destination(destination, module.name)
+                JSONRPCWebSocket.register_destination(destination, instance.name)
             instance.start()  # starts the new process
 
     def run(self):
@@ -130,7 +147,10 @@ class Server(object):
             log.warning("Server got signal {}, exiting...".format(signum))
             self._cleanup()
 
-        for sig in [signal.SIGTERM, signal.SIGINT, signal.SIGHUP, signal.SIGQUIT]:
+        signals = [signal.SIGTERM, signal.SIGINT]
+        if not sys.platform.startswith("win"):
+            signals.extend([signal.SIGHUP, signal.SIGQUIT])
+        for sig in signals:
             signal.signal(sig, signal_handler)
 
         try:

gns3server/version.py

@@ -23,5 +23,5 @@
 # or negative for a release candidate or beta (after the base version
 # number has been incremented)
 
-__version__ = "0.1.dev"
-__version_info__ = (0, 1, 0, -99)
+__version__ = "0.9.dev"
+__version_info__ = (0, 9, 0, -99)