Send command line used to start the VM to client

Add a command_line attribute to the VM object with
the command line used to start the VM.

Now /start return the object in order to get
this new attribute. And the HTTP status code
is 200 instead of 204 because 204 disallow body.

Support:
* Qemu
* Dynamips
* IOU

Ref https://github.com/GNS3/gns3-gui/issues/513

gns3server/handlers/api/iou_handler.py

@@ -148,11 +148,12 @@ class IOUHandler:
             "vm_id": "UUID for the instance"
         },
         status_codes={
-            204: "Instance started",
+            200: "Instance started",
             400: "Invalid request",
             404: "Instance doesn't exist"
         },
         input=IOU_START_SCHEMA,
+        output=IOU_OBJECT_SCHEMA,
         description="Start a IOU instance")
     def start(request, response):
 
@@ -166,7 +167,7 @@ class IOUHandler:
                 print(vm.iourc_path)
 
         yield from vm.start()
-        response.set_status(204)
+        response.json(vm)
 
     @classmethod
     @Route.post(

gns3server/handlers/api/qemu_handler.py

@@ -146,11 +146,12 @@ class QEMUHandler:
             "vm_id": "UUID for the instance"
         },
         status_codes={
-            204: "Instance started",
+            200: "Instance started",
             400: "Invalid request",
             404: "Instance doesn't exist"
         },
-        description="Start a Qemu VM instance")
+        description="Start a Qemu VM instance",
+        output=QEMU_OBJECT_SCHEMA)
     def start(request, response):
 
         qemu_manager = Qemu.instance()
@@ -161,7 +162,7 @@ class QEMUHandler:
             if pm.check_hardware_virtualization(vm) is False:
                 raise HTTPConflict(text="Cannot start VM with KVM enabled because hardware virtualization (VT-x/AMD-V) is already used by another software like VMware or VirtualBox")
         yield from vm.start()
-        response.set_status(204)
+        response.json(vm)
 
     @classmethod
     @Route.post(

gns3server/handlers/api/vpcs_handler.py

@@ -130,13 +130,14 @@ class VPCSHandler:
             400: "Invalid request",
             404: "Instance doesn't exist"
         },
-        description="Start a VPCS instance")
+        description="Start a VPCS instance",
+        output=VPCS_OBJECT_SCHEMA)
     def start(request, response):
 
         vpcs_manager = VPCS.instance()
         vm = vpcs_manager.get_vm(request.match_info["vm_id"], project_id=request.match_info["project_id"])
         yield from vm.start()
-        response.set_status(204)
+        response.json(vm)
 
     @classmethod
     @Route.post(

gns3server/modules/base_vm.py

@@ -58,6 +58,7 @@ class BaseVM:
         self._hw_virtualization = False
         self._ubridge_hypervisor = None
         self._vm_status = "stopped"
+        self._command_line = ""
 
         if self._console is not None:
             if console_type == "vnc":
@@ -94,6 +95,17 @@ class BaseVM:
         self._vm_status = status
         self._project.emit("vm.{}".format(status), self)
 
+    @property
+    def command_line(self):
+        """Return command used to start the VM"""
+
+        return self._command_line
+
+    @command_line.setter
+    def command_line(self, command_line):
+
+        self._command_line = command_line
+
     @property
     def project(self):
         """

gns3server/modules/iou/iou_vm.py

@@ -72,7 +72,6 @@ class IOUVM(BaseVM):
 
         super().__init__(name, vm_id, project, manager, console=console)
 
-        self._command = []
         self._iouyap_process = None
         self._iou_process = None
         self._iou_stdout_file = ""
@@ -220,7 +219,8 @@ class IOUVM(BaseVM):
                        "startup_config": self.relative_startup_config_file,
                        "private_config": self.relative_private_config_file,
                        "iourc_path": self.iourc_path,
-                       "use_default_iou_values": self._use_default_iou_values}
+                       "use_default_iou_values": self._use_default_iou_values,
+                       "command_line": self.command_line}
 
         # return the relative path if the IOU image is in the images_path directory
         iou_vm_info["path"] = self.manager.get_relative_image_path(self.path)
@@ -502,13 +502,14 @@ class IOUVM(BaseVM):
 
             if "IOURC" not in os.environ:
                 env["IOURC"] = iourc_path
-            self._command = yield from self._build_command()
+            command = yield from self._build_command()
             try:
-                log.info("Starting IOU: {}".format(self._command))
+                log.info("Starting IOU: {}".format(command))
                 self._iou_stdout_file = os.path.join(self.working_dir, "iou.log")
                 log.info("Logging to {}".format(self._iou_stdout_file))
                 with open(self._iou_stdout_file, "w", encoding="utf-8") as fd:
-                    self._iou_process = yield from asyncio.create_subprocess_exec(*self._command,
+                    self.command_line = ' '.join(command)
+                    self._iou_process = yield from asyncio.create_subprocess_exec(*command,
                                                                                   stdout=fd,
                                                                                   stderr=subprocess.STDOUT,
                                                                                   cwd=self.working_dir,

gns3server/modules/qemu/qemu_vm.py

@@ -68,7 +68,6 @@ class QemuVM(BaseVM):
         self._host = server_config.get("host", "127.0.0.1")
         self._monitor_host = server_config.get("monitor_host", "127.0.0.1")
         self._linked_clone = linked_clone
-        self._command = []
         self._process = None
         self._cpulimit_process = None
         self._monitor = None
@@ -867,15 +866,16 @@ class QemuVM(BaseVM):
                 # check if there is enough RAM to run
                 self.check_available_ram(self.ram)
 
-                self._command = yield from self._build_command()
-                command_string = " ".join(shlex.quote(s) for s in self._command)
+                command = yield from self._build_command()
+                command_string = " ".join(shlex.quote(s) for s in command)
                 try:
                     log.info("Starting QEMU with: {}".format(command_string))
                     self._stdout_file = os.path.join(self.working_dir, "qemu.log")
                     log.info("logging to {}".format(self._stdout_file))
                     with open(self._stdout_file, "w", encoding="utf-8") as fd:
                         fd.write("Start QEMU with {}\n\nExecution log:\n".format(command_string))
-                        self._process = yield from asyncio.create_subprocess_exec(*self._command,
+                        self.command_line = ' '.join(command)
+                        self._process = yield from asyncio.create_subprocess_exec(*command,
                                                                                   stdout=fd,
                                                                                   stderr=subprocess.STDOUT,
                                                                                   cwd=self.working_dir)

gns3server/modules/vpcs/vpcs_vm.py

@@ -59,7 +59,6 @@ class VPCSVM(BaseVM):
     def __init__(self, name, vm_id, project, manager, console=None, startup_script=None):
 
         super().__init__(name, vm_id, project, manager, console=console)
-        self._command = []
         self._process = None
         self._vpcs_stdout_file = ""
         self._vpcs_version = None
@@ -115,7 +114,8 @@ class VPCSVM(BaseVM):
                 "console": self._console,
                 "project_id": self.project.id,
                 "startup_script": self.startup_script,
-                "startup_script_path": self.relative_startup_script}
+                "startup_script_path": self.relative_startup_script,
+                "command_line": self.command_line}
 
     @property
     def relative_startup_script(self):
@@ -223,16 +223,17 @@ class VPCSVM(BaseVM):
             if not self._ethernet_adapter.get_nio(0):
                 raise VPCSError("This VPCS instance must be connected in order to start")
 
-            self._command = self._build_command()
+            command = self._build_command()
             try:
-                log.info("Starting VPCS: {}".format(self._command))
+                log.info("Starting VPCS: {}".format(command))
                 self._vpcs_stdout_file = os.path.join(self.working_dir, "vpcs.log")
                 log.info("Logging to {}".format(self._vpcs_stdout_file))
                 flags = 0
                 if sys.platform.startswith("win32"):
                     flags = subprocess.CREATE_NEW_PROCESS_GROUP
                 with open(self._vpcs_stdout_file, "w", encoding="utf-8") as fd:
-                    self._process = yield from asyncio.create_subprocess_exec(*self._command,
+                    self.command_line = ' '.join(command)
+                    self._process = yield from asyncio.create_subprocess_exec(*command,
                                                                               stdout=fd,
                                                                               stderr=subprocess.STDOUT,
                                                                               cwd=self.working_dir,

gns3server/schemas/iou.py

@@ -254,11 +254,16 @@ IOU_OBJECT_SCHEMA = {
         "iourc_path": {
             "description": "Path of the iourc file used by remote servers",
             "type": ["string", "null"]
+        },
+        "command_line": {
+            "description": "Last command line used by GNS3 to start QEMU",
+            "type": "string"
         }
     },
     "additionalProperties": False,
     "required": ["name", "vm_id", "console", "project_id", "path", "md5sum", "serial_adapters", "ethernet_adapters",
-                 "ram", "nvram", "l1_keepalives", "startup_config", "private_config", "use_default_iou_values"]
+                 "ram", "nvram", "l1_keepalives", "startup_config", "private_config", "use_default_iou_values",
+                 "command_line"]
 }
 
 IOU_CAPTURE_SCHEMA = {

gns3server/schemas/qemu.py

@@ -558,6 +558,10 @@ QEMU_OBJECT_SCHEMA = {
             "description": "Additional QEMU options",
             "type": "string",
         },
+        "command_line": {
+            "description": "Last command line used by GNS3 to start QEMU",
+            "type": "string"
+        }
     },
     "additionalProperties": False,
     "required": ["vm_id",
@@ -598,7 +602,8 @@ QEMU_OBJECT_SCHEMA = {
                  "cpu_throttling",
                  "process_priority",
                  "options",
-                 "vm_directory"]
+                 "vm_directory",
+                 "command_line"]
 }
 
 QEMU_BINARY_FILTER_SCHEMA = {

gns3server/schemas/vpcs.py

@@ -121,7 +121,11 @@ VPCS_OBJECT_SCHEMA = {
             "description": "Path of the VPCS startup script relative to project directory",
             "type": ["string", "null"]
         },
+        "command_line": {
+            "description": "Last command line used by GNS3 to start QEMU",
+            "type": "string"
+        }
     },
     "additionalProperties": False,
-    "required": ["name", "vm_id", "status", "console", "project_id", "startup_script_path"]
+    "required": ["name", "vm_id", "status", "console", "project_id", "startup_script_path", "command_line"]
 }

tests/handlers/api/test_iou.py

@@ -139,7 +139,8 @@ def test_iou_start(server, vm):
     with asyncio_patch("gns3server.modules.iou.iou_vm.IOUVM.start", return_value=True) as mock:
         response = server.post("/projects/{project_id}/iou/vms/{vm_id}/start".format(project_id=vm["project_id"], vm_id=vm["vm_id"]))
         assert mock.called
-        assert response.status == 204
+        assert response.status == 200
+        assert response.json["name"] == "PC TEST 1"
 
 
 def test_iou_start_with_iourc(server, vm, tmpdir):
@@ -148,7 +149,7 @@ def test_iou_start_with_iourc(server, vm, tmpdir):
     with asyncio_patch("gns3server.modules.iou.iou_vm.IOUVM.start", return_value=True) as mock:
         response = server.post("/projects/{project_id}/iou/vms/{vm_id}/start".format(project_id=vm["project_id"], vm_id=vm["vm_id"]), body=body, example=True)
         assert mock.called
-        assert response.status == 204
+        assert response.status == 200
 
     response = server.get("/projects/{project_id}/iou/vms/{vm_id}".format(project_id=vm["project_id"], vm_id=vm["vm_id"]))
     assert response.status == 200

tests/handlers/api/test_qemu.py

@@ -114,7 +114,8 @@ def test_qemu_start(server, vm):
     with asyncio_patch("gns3server.modules.qemu.qemu_vm.QemuVM.start", return_value=True) as mock:
         response = server.post("/projects/{project_id}/qemu/vms/{vm_id}/start".format(project_id=vm["project_id"], vm_id=vm["vm_id"]), example=True)
         assert mock.called
-        assert response.status == 204
+        assert response.status == 200
+        assert response.json["name"] == "PC TEST 1"
 
 
 def test_qemu_stop(server, vm):

tests/handlers/api/test_vpcs.py

@@ -102,7 +102,8 @@ def test_vpcs_start(server, vm):
     with asyncio_patch("gns3server.modules.vpcs.vpcs_vm.VPCSVM.start", return_value=True) as mock:
         response = server.post("/projects/{project_id}/vpcs/vms/{vm_id}/start".format(project_id=vm["project_id"], vm_id=vm["vm_id"]), example=True)
         assert mock.called
-        assert response.status == 204
+        assert response.status == 200
+        assert response.json["name"] == "PC TEST 1"
 
 
 def test_vpcs_stop(server, vm):

tests/modules/iou/test_iou_vm.py

@@ -112,11 +112,11 @@ def test_start(loop, vm, monkeypatch):
         with asyncio_patch("gns3server.modules.iou.iou_vm.IOUVM._check_iou_licence", return_value=True):
             with asyncio_patch("gns3server.modules.iou.iou_vm.IOUVM._start_ioucon", return_value=True):
                 with asyncio_patch("gns3server.modules.iou.iou_vm.IOUVM._start_iouyap", return_value=True):
-                    with asyncio_patch("asyncio.create_subprocess_exec", return_value=mock_process):
+                    with asyncio_patch("asyncio.create_subprocess_exec", return_value=mock_process) as mock_exec:
                         mock_process.returncode = None
                         loop.run_until_complete(asyncio.async(vm.start()))
                         assert vm.is_running()
-
+                        assert vm.command_line == ' '.join(mock_exec.call_args[0])
 
 def test_start_with_iourc(loop, vm, monkeypatch, tmpdir):
 

tests/modules/qemu/test_qemu_vm.py

@@ -112,9 +112,10 @@ def test_is_running(vm, running_subprocess_mock):
 
 
 def test_start(loop, vm, running_subprocess_mock):
-    with asyncio_patch("asyncio.create_subprocess_exec", return_value=running_subprocess_mock):
+    with asyncio_patch("asyncio.create_subprocess_exec", return_value=running_subprocess_mock) as mock:
         loop.run_until_complete(asyncio.async(vm.start()))
         assert vm.is_running()
+        assert vm.command_line == ' '.join(mock.call_args[0])
 
 
 def test_stop(loop, vm, running_subprocess_mock):

tests/modules/vpcs/test_vpcs_vm.py

@@ -107,6 +107,7 @@ def test_start(loop, vm):
                                               '-t',
                                               '127.0.0.1')
             assert vm.is_running()
+            assert vm.command_line == ' '.join(mock_exec.call_args[0])
     (action, event) = queue.get_nowait()
     assert action == "vm.started"
     assert event == vm