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Add QEMU monitor port to control running QEMU VMs

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This commit is contained in:
Dmitry Shmygov
2014-12-22 17:44:16 +03:00
parent 7785c03eac
commit 3590985c07
3 changed files with 105 additions and 6 deletions
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82
gns3server/modules/qemu/qemu_vm.py
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@ -52,10 +52,15 @@ class QemuVM(object):
:param console_host: IP address to bind for console connections
:param console_start_port_range: TCP console port range start
:param console_end_port_range: TCP console port range end
:param monitor: TCP monitor port
:param monitor_host: IP address to bind for monitor connections
:param monitor_start_port_range: TCP monitor port range start
:param monitor_end_port_range: TCP monitor port range end
"""
_instances = []
_allocated_console_ports = []
_allocated_monitor_ports = []
def __init__(self,
name,
@ -66,7 +71,11 @@ class QemuVM(object):
console=None,
console_host="0.0.0.0",
console_start_port_range=5001,
console_end_port_range=5500):
console_end_port_range=5500,
monitor=None,
monitor_host="0.0.0.0",
monitor_start_port_range=5501,
monitor_end_port_range=6000):
if not qemu_id:
self._id = 0
@ -95,6 +104,9 @@ class QemuVM(object):
self._console_host = console_host
self._console_start_port_range = console_start_port_range
self._console_end_port_range = console_end_port_range
self._monitor_host = monitor_host
self._monitor_start_port_range = monitor_start_port_range
self._monitor_end_port_range = monitor_end_port_range
self._cloud_path = None
# QEMU settings
@ -104,6 +116,7 @@ class QemuVM(object):
self._options = ""
self._ram = 256
self._console = console
self._monitor = monitor
self._ethernet_adapters = []
self._adapter_type = "e1000"
self._initrd = ""
@ -135,6 +148,20 @@ class QemuVM(object):
raise QemuError("Console port {} is already used by another QEMU VM".format(console))
self._allocated_console_ports.append(self._console)
if not self._monitor:
# allocate a monitor port
try:
self._monitor = find_unused_port(self._monitor_start_port_range,
self._monitor_end_port_range,
self._monitor_host,
ignore_ports=self._allocated_monitor_ports)
except Exception as e:
raise QemuError(e)
if self._monitor in self._allocated_monitor_ports:
raise QemuError("Monitor port {} is already used by another QEMU VM".format(monitor))
self._allocated_monitor_ports.append(self._monitor)
self.adapters = 1 # creates 1 adapter by default
log.info("QEMU VM {name} [id={id}] has been created".format(name=self._name,
id=self._id))
@ -155,6 +182,7 @@ class QemuVM(object):
"adapters": self.adapters,
"adapter_type": self._adapter_type,
"console": self._console,
"monitor": self._monitor,
"initrd": self._initrd,
"kernel_image": self._kernel_image,
"kernel_command_line": self._kernel_command_line,
@ -183,6 +211,7 @@ class QemuVM(object):
cls._instances.clear()
cls._allocated_console_ports.clear()
cls._allocated_monitor_ports.clear()
@property
def name(self):
@ -267,6 +296,35 @@ class QemuVM(object):
id=self._id,
port=console))
@property
def monitor(self):
"""
Returns the TCP monitor port.
:returns: monitor port (integer)
"""
return self._monitor
@monitor.setter
def monitor(self, monitor):
"""
Sets the TCP monitor port.
:param monitor: monitor port (integer)
"""
if monitor in self._allocated_monitor_ports:
raise QemuError("Monitor port {} is already used by another QEMU VM".format(monitor))
self._allocated_monitor_ports.remove(self._monitor)
self._monitor = monitor
self._allocated_monitor_ports.append(self._monitor)
log.info("QEMU VM {name} [id={id}]: monitor port set to {port}".format(name=self._name,
id=self._id,
port=monitor))
def delete(self):
"""
Deletes this QEMU VM.
@ -276,8 +334,11 @@ class QemuVM(object):
if self._id in self._instances:
self._instances.remove(self._id)
if self.console and self.console in self._allocated_console_ports:
self._allocated_console_ports.remove(self.console)
if self._console and self._console in self._allocated_console_ports:
self._allocated_console_ports.remove(self._console)
if self._monitor and self._monitor in self._allocated_monitor_ports:
self._allocated_monitor_ports.remove(self._monitor)
log.info("QEMU VM {name} [id={id}] has been deleted".format(name=self._name,
id=self._id))
@ -291,8 +352,11 @@ class QemuVM(object):
if self._id in self._instances:
self._instances.remove(self._id)
if self.console:
self._allocated_console_ports.remove(self.console)
if self._console:
self._allocated_console_ports.remove(self._console)
if self._monitor:
self._allocated_monitor_ports.remove(self._monitor)
try:
shutil.rmtree(self._working_dir)
@ -941,6 +1005,13 @@ class QemuVM(object):
else:
return []
def _monitor_options(self):
if self._monitor:
return ["-monitor", "telnet:{}:{},server,nowait".format(self._monitor_host, self._monitor)]
else:
return []
def _disk_options(self):
options = []
@ -1047,6 +1118,7 @@ class QemuVM(object):
command.extend(self._disk_options())
command.extend(self._linux_boot_options())
command.extend(self._serial_options())
command.extend(self._monitor_options())
additional_options = self._options.strip()
if additional_options:
command.extend(shlex.split(additional_options))