# # Copyright (C) 2006, 2013, 2014 Red Hat, Inc. # Copyright (C) 2006 Daniel P. Berrange # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, # MA 02110-1301 USA. # # pylint: disable=E0611 from gi.repository import GObject # pylint: enable=E0611 import logging import os import re import socket import threading import time import traceback import libvirt import virtinst from virtinst import pollhelpers from virtinst import util from virtManager import connectauth from virtManager.baseclass import vmmGObject from virtManager.domain import vmmDomain from virtManager.interface import vmmInterface from virtManager.mediadev import vmmMediaDevice from virtManager.netdev import vmmNetDevice from virtManager.network import vmmNetwork from virtManager.nodedev import vmmNodeDevice from virtManager.storagepool import vmmStoragePool class vmmConnection(vmmGObject): __gsignals__ = { "vm-added": (GObject.SignalFlags.RUN_FIRST, None, [str]), "vm-removed": (GObject.SignalFlags.RUN_FIRST, None, [str]), "net-added": (GObject.SignalFlags.RUN_FIRST, None, [str]), "net-removed": (GObject.SignalFlags.RUN_FIRST, None, [str]), "net-started": (GObject.SignalFlags.RUN_FIRST, None, [str]), "net-stopped": (GObject.SignalFlags.RUN_FIRST, None, [str]), "pool-added": (GObject.SignalFlags.RUN_FIRST, None, [str]), "pool-removed": (GObject.SignalFlags.RUN_FIRST, None, [str]), "pool-started": (GObject.SignalFlags.RUN_FIRST, None, [str]), "pool-stopped": (GObject.SignalFlags.RUN_FIRST, None, [str]), "interface-added": (GObject.SignalFlags.RUN_FIRST, None, [str]), "interface-removed": (GObject.SignalFlags.RUN_FIRST, None, [str]), "interface-started": (GObject.SignalFlags.RUN_FIRST, None, [str]), "interface-stopped": (GObject.SignalFlags.RUN_FIRST, None, [str]), "nodedev-added": (GObject.SignalFlags.RUN_FIRST, None, [str]), "nodedev-removed": (GObject.SignalFlags.RUN_FIRST, None, [str]), "mediadev-added": (GObject.SignalFlags.RUN_FIRST, None, [object]), "mediadev-removed": (GObject.SignalFlags.RUN_FIRST, None, [str]), "resources-sampled": (GObject.SignalFlags.RUN_FIRST, None, []), "state-changed": (GObject.SignalFlags.RUN_FIRST, None, []), "connect-error": (GObject.SignalFlags.RUN_FIRST, None, [str, str, bool]), "priority-tick": (GObject.SignalFlags.RUN_FIRST, None, [object]), } STATE_DISCONNECTED = 0 STATE_CONNECTING = 1 STATE_ACTIVE = 2 STATE_INACTIVE = 3 def __init__(self, uri): vmmGObject.__init__(self) self._uri = uri if self._uri is None or self._uri.lower() == "xen": self._uri = "xen:///" self.state = self.STATE_DISCONNECTED self.connectThread = None self.connectError = None self._backend = virtinst.VirtualConnection(self._uri) self._caps = None self._caps_xml = None self._network_capable = None self._storage_capable = None self._interface_capable = None self._nodedev_capable = None self._xml_flags = {} # Physical network interfaces: name -> virtinst.NodeDevice self.nodedevs = {} # Physical network interfaces: name (eth0) -> vmmNetDevice self.netdevs = {} # Physical media devices: vmmMediaDevice.key -> vmmMediaDevice self.mediadevs = {} # Connection Storage pools: name -> vmmInterface self.interfaces = {} # Connection Storage pools: UUID -> vmmStoragePool self.pools = {} # Virtual networks UUUID -> vmmNetwork object self.nets = {} # Virtual machines. UUID -> vmmDomain object self.vms = {} # Resource utilization statistics self.record = [] self.hostinfo = None self.netdev_initialized = False self.netdev_error = "" self.netdev_use_libvirt = False self.mediadev_initialized = False self.mediadev_error = "" self.mediadev_use_libvirt = False self._init_virtconn() ################# # Init routines # ################# def _init_virtconn(self): self._backend.cb_fetch_all_guests = ( lambda: [obj.get_xmlobj(refresh_if_nec=False) for obj in self.vms.values()]) self._backend.cb_fetch_all_pools = ( lambda: [obj.get_xmlobj(refresh_if_nec=False) for obj in self.pools.values()]) self._backend.cb_fetch_all_vols = ( lambda: [obj.get_xmlobj(refresh_if_nec=False) for pool in self.pools.values() for obj in pool.get_volumes(refresh=False).values()]) def clear_cache(pools=False): if not pools: return # We need to do this synchronously self.tick(False, pollpool=True) self._backend.cb_clear_cache = clear_cache def _init_netdev(self): """ Determine how we will be polling for net devices (HAL or libvirt) """ if self.is_nodedev_capable() and self.is_interface_capable(): try: self._build_libvirt_netdev_list() self.netdev_use_libvirt = True except Exception, e: self.netdev_error = _("Could not build physical interface " "list via libvirt: %s") % str(e) else: self.netdev_error = _("Libvirt version does not support " "physical interface listing.") self.netdev_initialized = True if self.netdev_error: logging.debug(self.netdev_error) else: if self.netdev_use_libvirt: logging.debug("Using libvirt API for netdev enumeration") else: logging.debug("Using HAL for netdev enumeration") def _init_mediadev(self): if self.is_nodedev_capable(): try: self.connect("nodedev-added", self._nodedev_mediadev_added) self.connect("nodedev-removed", self._nodedev_mediadev_removed) self.mediadev_use_libvirt = True except Exception, e: self.mediadev_error = _("Could not build media " "list via libvirt: %s") % str(e) else: self.mediadev_error = _("Libvirt version does not support " "media listing.") self.mediadev_initialized = True if self.mediadev_error: logging.debug(self.mediadev_error) else: if self.mediadev_use_libvirt: logging.debug("Using libvirt API for mediadev enumeration") else: logging.debug("Using HAL for mediadev enumeration") ######################## # General data getters # ######################## def get_uri(self): return self._uri def get_backend(self): return self._backend def invalidate_caps(self): return self._backend.invalidate_caps() caps = property(lambda self: getattr(self, "_backend").caps) def get_host_info(self): return self.hostinfo def pretty_host_memory_size(self): if not self._backend.is_open(): return "" return util.pretty_mem(self.host_memory_size()) def host_memory_size(self): if not self._backend.is_open(): return 0 return self.hostinfo[1] * 1024 def host_architecture(self): if not self._backend.is_open(): return "" return self.hostinfo[0] def host_active_processor_count(self): if not self._backend.is_open(): return 0 return self.hostinfo[2] def host_maximum_processor_count(self): if not self._backend.is_open(): return 0 return (self.hostinfo[4] * self.hostinfo[5] * self.hostinfo[6] * self.hostinfo[7]) def connect(self, name, callback, *args): handle_id = vmmGObject.connect(self, name, callback, *args) if name == "vm-added": for uuid in self.vms.keys(): self.emit("vm-added", uuid) elif name == "mediadev-added": for dev in self.mediadevs.values(): self.emit("mediadev-added", dev) elif name == "nodedev-added": for key in self.nodedevs.keys(): self.emit("nodedev-added", key) return handle_id ########################## # URI + hostname helpers # ########################## def get_qualified_hostname(self): if self.check_support(self._backend.SUPPORT_CONN_GETHOSTNAME): return self._backend.getHostname() uri_hostname = self.get_uri_hostname() if self.is_remote() and uri_hostname.lower() != "localhost": return uri_hostname # This can throw an exception, so beware when calling! return socket.gethostbyaddr(socket.gethostname())[0] def get_short_hostname(self): hostname = self.get_hostname() offset = hostname.find(".") if offset > 0 and not hostname[0].isdigit(): return hostname[0:offset] return hostname def get_hostname(self, resolveLocal=False): ignore = resolveLocal try: return self.get_qualified_hostname() except: return self.get_uri_hostname() get_uri_hostname = property(lambda s: getattr(s, "_backend").get_uri_hostname) get_transport = property(lambda s: getattr(s, "_backend").get_uri_transport) get_driver = property(lambda s: getattr(s, "_backend").get_uri_driver) is_container = property(lambda s: getattr(s, "_backend").is_container) is_lxc = property(lambda s: getattr(s, "_backend").is_lxc) is_openvz = property(lambda s: getattr(s, "_backend").is_openvz) is_xen = property(lambda s: getattr(s, "_backend").is_xen) is_remote = property(lambda s: getattr(s, "_backend").is_remote) is_qemu = property(lambda s: getattr(s, "_backend").is_qemu) is_qemu_system = property(lambda s: getattr(s, "_backend").is_qemu_system) is_qemu_session = property(lambda s: getattr(s, "_backend").is_qemu_session) is_test_conn = property(lambda s: getattr(s, "_backend").is_test) is_session_uri = property(lambda s: getattr(s, "_backend").is_session_uri) # Connection capabilities debug helpers def stable_defaults(self, emulator=None): if not self.is_qemu_system(): return False if emulator: if not str(emulator).startswith("/usr/libexec"): return False else: for guest in self.caps.guests: for dom in guest.domains: if dom.emulator.startswith("/usr/libexec"): return self.config.stable_defaults return self.config.stable_defaults def get_cache_dir(self): uri = self.get_uri().replace("/", "_") ret = os.path.join(util.get_cache_dir(), uri) if not os.path.exists(ret): os.makedirs(ret, 0755) return ret def get_default_storage_format(self): raw = self.config.get_default_storage_format(raw=True) if raw != "default": return raw fmt = self.config.get_default_storage_format() if fmt != "qcow2": return if self.check_support(self._backend.SUPPORT_CONN_DEFAULT_QCOW2): return fmt return None #################################### # Connection pretty print routines # #################################### def _get_pretty_desc(self, active, shorthost, show_trans): def match_whole_string(orig, reg): match = re.match(reg, orig) if not match: return False return ((match.end() - match.start()) == len(orig)) def is_ip_addr(orig): return match_whole_string(orig, "[0-9.]+") (scheme, username, hostname, path, ignore, ignore) = util.uri_split(self.get_uri()) hv = "" rest = "" transport = "" port = "" if scheme.count("+"): transport = scheme.split("+")[1] scheme = scheme.split("+")[0] if hostname.count(":"): port = hostname.split(":")[1] hostname = hostname.split(":")[0] if hostname: if shorthost and not is_ip_addr(hostname): rest = hostname.split(".")[0] else: rest = hostname else: rest = "localhost" pretty_map = { "esx" : "ESX", "gsx" : "GSX", "libxl" : "libxl", "lxc" : "LXC", "openvz" : "OpenVZ", "phyp" : "phyp", "qemu" : "QEMU", "test" : "test", "uml" : "UML", "vbox" : "VBox", "vmware" : "VMWare", "xen" : "xen", "xenapi" : "XenAPI", } hv = scheme if scheme in pretty_map: hv = pretty_map[scheme] if hv == "QEMU" and active and self.caps.is_kvm_available(): hv += "/KVM" if show_trans: if transport: hv += "+" + transport if username: hostname = username + "@" + hostname if port: hostname += ":" + port if path and path != "/system" and path != "/": if path == "/session": hv += " Usermode" else: hv += " %s" % os.path.basename(path) if self._backend.fake_name(): hv = self._backend.fake_name() return "%s (%s)" % (rest, hv) def get_pretty_desc_inactive(self, shorthost=True, transport=False): return self._get_pretty_desc(False, shorthost, transport) def get_pretty_desc_active(self, shorthost=True, transport=False): return self._get_pretty_desc(True, shorthost, transport) ####################### # API support helpers # ####################### for _supportname in [_supportname for _supportname in dir(virtinst.VirtualConnection) if _supportname.startswith("SUPPORT_")]: locals()[_supportname] = getattr(virtinst.VirtualConnection, _supportname) def check_support(self, *args): return self._backend.check_support(*args) def is_storage_capable(self): if self._storage_capable is None: self._storage_capable = self.check_support( self._backend.SUPPORT_CONN_STORAGE) if self._storage_capable is False: logging.debug("Connection doesn't seem to support storage " "APIs. Skipping all storage polling.") else: # Try to create the default storage pool try: virtinst.StoragePool.build_default_pool(self.get_backend()) except Exception, e: logging.debug("Building default pool failed: %s", str(e)) return self._storage_capable def is_network_capable(self): if self._network_capable is None: self._network_capable = self.check_support( self._backend.SUPPORT_CONN_NETWORK) if self._network_capable is False: logging.debug("Connection doesn't seem to support network " "APIs. Skipping all network polling.") return self._network_capable def is_interface_capable(self): if self._interface_capable is None: self._interface_capable = self.check_support( self._backend.SUPPORT_CONN_INTERFACE) if self._interface_capable is False: logging.debug("Connection doesn't seem to support interface " "APIs. Skipping all interface polling.") return self._interface_capable def is_nodedev_capable(self): if self._nodedev_capable is None: self._nodedev_capable = self.check_support( self._backend.SUPPORT_CONN_NODEDEV) return self._nodedev_capable def _get_flags_helper(self, obj, key, check_func): ignore = obj flags_dict = self._xml_flags.get(key) if flags_dict is None: # Flags already set inact, act = check_func() flags_dict = {} flags_dict["active"] = act flags_dict["inactive"] = inact self._xml_flags[key] = flags_dict active_flags = flags_dict["active"] inactive_flags = flags_dict["inactive"] return (inactive_flags, active_flags) def get_dom_flags(self, vm): key = "domain" def check_func(): act = 0 inact = 0 if self.check_support( self._backend.SUPPORT_DOMAIN_XML_INACTIVE, vm): inact = libvirt.VIR_DOMAIN_XML_INACTIVE else: logging.debug("Domain XML inactive flag not supported.") if self.check_support( self._backend.SUPPORT_DOMAIN_XML_SECURE, vm): inact |= libvirt.VIR_DOMAIN_XML_SECURE act = libvirt.VIR_DOMAIN_XML_SECURE else: logging.debug("Domain XML secure flag not supported.") if self.check_support( self._backend.SUPPORT_DOMAIN_CPU_HOST_MODEL, vm): inact |= libvirt.VIR_DOMAIN_XML_UPDATE_CPU act |= libvirt.VIR_DOMAIN_XML_UPDATE_CPU else: logging.debug("Domain XML update flag not supported.") return inact, act return self._get_flags_helper(vm, key, check_func) def get_interface_flags(self, iface): key = "interface" def check_func(): act = 0 inact = 0 if self.check_support( self._backend.SUPPORT_INTERFACE_XML_INACTIVE, iface): inact = libvirt.VIR_INTERFACE_XML_INACTIVE else: logging.debug("Interface XML inactive flag not supported.") return (inact, act) return self._get_flags_helper(iface, key, check_func) ################################### # Connection state getter/setters # ################################### def _change_state(self, newstate): if self.state != newstate: self.state = newstate self.emit("state-changed") def get_state(self): return self.state def get_state_text(self): if self.state == self.STATE_DISCONNECTED: return _("Disconnected") elif self.state == self.STATE_CONNECTING: return _("Connecting") elif self.state == self.STATE_ACTIVE: return _("Active") elif self.state == self.STATE_INACTIVE: return _("Inactive") else: return _("Unknown") def pause(self): if self.state != self.STATE_ACTIVE: return self._change_state(self.STATE_INACTIVE) def resume(self): if self.state != self.STATE_INACTIVE: return self._change_state(self.STATE_ACTIVE) def is_active(self): return self.state == self.STATE_ACTIVE def is_paused(self): return self.state == self.STATE_INACTIVE def is_disconnected(self): return self.state == self.STATE_DISCONNECTED def is_connecting(self): return self.state == self.STATE_CONNECTING ################################# # Libvirt object lookup methods # ################################# def _build_libvirt_netdev_list(self): bridges = [] netdev_list = {} def interface_to_netdev(interface): name = interface.get_name() mac = interface.get_mac() is_bridge = interface.is_bridge() slave_names = interface.get_slave_names() if is_bridge and slave_names: bridges.append((name, slave_names)) else: netdev_list[name] = vmmNetDevice(name, mac, is_bridge, None) def nodedev_to_netdev(nodedev): name = nodedev.interface mac = nodedev.address if name not in netdev_list.keys(): netdev_list[name] = vmmNetDevice(name, mac, False, None) else: # Believe this info over libvirt interface APIs, since # this comes from the hardware if mac: netdev_list[name].mac = mac for name, iface in self.interfaces.items(): interface_to_netdev(iface) for nodedev in self.get_nodedevs("net"): nodedev_to_netdev(nodedev) # Mark NetDevices as bridged where appropriate for bridge_name, slave_names in bridges: for name, netdev in netdev_list.items(): if name not in slave_names: continue # XXX: Can a physical device be in two bridges? netdev.bridge = bridge_name netdev.shared = True break # XXX: How to handle added/removed signals to clients? return netdev_list def get_vm(self, uuid): return self.vms[uuid] def get_net(self, uuid): return self.nets[uuid] def get_net_device(self, path): return self.netdevs[path] def get_pool(self, uuid): return self.pools[uuid] def get_interface(self, name): return self.interfaces[name] def get_nodedev(self, name): return self.nodedevs[name] def get_nodedevs(self, devtype=None, devcap=None): retdevs = [] for dev in self.nodedevs.values(): xmlobj = dev.get_xmlobj() if devtype and xmlobj.device_type != devtype: continue if devcap: if (not hasattr(xmlobj, "capability_type") or xmlobj.capability_type != devcap): continue if (devtype == "usb_device" and (("Linux Foundation" in str(xmlobj.vendor_name) or ("Linux" in str(xmlobj.vendor_name) and xmlobj.vendor_id == "0x1d6b")) and ("root hub" in str(xmlobj.product_name) or ("host controller" in str(xmlobj.product_name).lower() and str(xmlobj.product_id).startswith("0x000"))))): continue retdevs.append(xmlobj) return retdevs def get_nodedevs_number(self, devtype, vendor, product): count = 0 devs = self.get_nodedevs(devtype) for dev in devs: if (vendor == dev.vendor_id and product == dev.product_id): count += 1 logging.debug("There are %d node devices with " "vendorId: %s, productId: %s", count, vendor, product) return count def get_net_by_name(self, name): for net in self.nets.values(): if net.get_name() == name: return net def get_pool_by_path(self, path): for pool in self.pools.values(): if pool.get_target_path() == path: return pool return None def get_pool_by_name(self, name): for p in self.pools.values(): if p.get_name() == name: return p return None def get_vol_by_path(self, path): for pool in self.pools.values(): for vol in pool.get_volumes().values(): if vol.get_target_path() == path: return vol return None def list_vm_uuids(self): return self.vms.keys() def list_net_uuids(self): return self.nets.keys() def list_net_device_paths(self): # Update netdev list if self.netdev_use_libvirt: self.netdevs = self._build_libvirt_netdev_list() return self.netdevs.keys() def list_pool_uuids(self): return self.pools.keys() def list_interface_names(self): return self.interfaces.keys() ################################### # Libvirt object creation methods # ################################### def restore(self, frm): self._backend.restore(frm) try: os.remove(frm) except: logging.debug("Couldn't remove save file '%s' for restore", frm) def define_domain(self, xml): return self._backend.defineXML(xml) def define_network(self, xml): return self._backend.networkDefineXML(xml) def define_pool(self, xml): return self._backend.storagePoolDefineXML(xml, 0) def define_interface(self, xml): return self._backend.interfaceDefineXML(xml, 0) def _rename_helper(self, objtype, define_cb, obj, origxml, newxml): # Undefine the original object obj.delete(force=False) newobj = None try: try: # Redefine new domain newobj = define_cb(newxml) except Exception, renameerr: try: logging.exception("Error defining new name %s XML", objtype) newobj = define_cb(origxml) except Exception, fixerr: logging.exception("Failed to redefine original %s!", objtype) raise RuntimeError( _("%s rename failed. Attempting to recover also " "failed.\n\n" "Original error: %s\n\n" "Recover error: %s" % (objtype, str(renameerr), str(fixerr)))) raise finally: if newobj: # Reinsert handle into new obj obj.change_name_backend(newobj) def rename_vm(self, obj, origxml, newxml): return self._rename_helper("domain", self.define_domain, obj, origxml, newxml) def rename_network(self, obj, origxml, newxml): return self._rename_helper("network", self.define_network, obj, origxml, newxml) def rename_pool(self, obj, origxml, newxml): return self._rename_helper("storagepool", self.define_pool, obj, origxml, newxml) #################### # Update listeners # #################### def _nodedev_mediadev_added(self, ignore1, name): if name in self.mediadevs: return vobj = self.get_nodedev(name) mediadev = vmmMediaDevice.mediadev_from_nodedev(vobj) if not mediadev: return self.mediadevs[name] = mediadev self.emit("mediadev-added", mediadev) def _nodedev_mediadev_removed(self, ignore1, name): if name not in self.mediadevs: return self.mediadevs[name].cleanup() del(self.mediadevs[name]) self.emit("mediadev-removed", name) ###################################### # Connection closing/opening methods # ###################################### def get_autoconnect(self): return self.config.get_conn_autoconnect(self.get_uri()) def set_autoconnect(self, val): self.config.set_conn_autoconnect(self.get_uri(), val) def close(self): def cleanup(devs): for dev in devs.values(): dev.cleanup() self._backend.close() self.record = [] cleanup(self.nodedevs) self.nodedevs = {} cleanup(self.netdevs) self.netdevs = {} cleanup(self.mediadevs) self.mediadevs = {} cleanup(self.interfaces) self.interfaces = {} cleanup(self.pools) self.pools = {} cleanup(self.nets) self.nets = {} cleanup(self.vms) self.vms = {} self._change_state(self.STATE_DISCONNECTED) def _cleanup(self): self.close() self.connectError = None def open(self, sync=False): if self.state != self.STATE_DISCONNECTED: return self.connectError = None self._change_state(self.STATE_CONNECTING) if sync: logging.debug("Opening connection synchronously: %s", self.get_uri()) self._open_thread() else: logging.debug("Scheduling background open thread for " + self.get_uri()) self.connectThread = threading.Thread(target=self._open_thread, name="Connect %s" % self.get_uri()) self.connectThread.setDaemon(True) self.connectThread.start() def _do_creds_password(self, creds): try: return connectauth.creds_dialog(creds) except Exception, e: # Detailed error message, in English so it can be Googled. self.connectError = ( "Failed to get credentials for '%s':\n%s\n%s" % (self.get_uri(), str(e), "".join(traceback.format_exc()))) return -1 def _open_thread(self): logging.debug("Background 'open connection' thread is running") while True: libexc = None exc = None tb = None warnconsole = False try: self._backend.open(self._do_creds_password) except libvirt.libvirtError, libexc: tb = "".join(traceback.format_exc()) except Exception, exc: tb = "".join(traceback.format_exc()) if libexc: exc = libexc if not exc: self.state = self.STATE_ACTIVE break self.state = self.STATE_DISCONNECTED if (libexc and (libexc.get_error_code() == getattr(libvirt, "VIR_ERR_AUTH_CANCELLED", None))): logging.debug("User cancelled auth, not raising any error.") break if (libexc and libexc.get_error_code() == libvirt.VIR_ERR_AUTH_FAILED and "not authorized" in libexc.get_error_message().lower()): logging.debug("Looks like we might have failed policykit " "auth. Checking to see if we have a valid " "console session") if (not self.is_remote() and not connectauth.do_we_have_session()): warnconsole = True if (libexc and libexc.get_error_code() == libvirt.VIR_ERR_AUTH_FAILED and "GSSAPI Error" in libexc.get_error_message() and "No credentials cache found" in libexc.get_error_message()): if connectauth.acquire_tgt(): continue self.connectError = (str(exc), tb, warnconsole) break # We want to kill off this thread asap, so schedule an # idle event to inform the UI of result logging.debug("Background open thread complete, scheduling notify") self.idle_add(self._open_notify) self.connectThread = None def _open_notify(self): logging.debug("Notifying open result") self.idle_emit("state-changed") if self.state == self.STATE_ACTIVE: logging.debug("libvirt version=%s", self._backend.local_libvirt_version()) logging.debug("daemon version=%s", self._backend.daemon_version()) logging.debug("conn version=%s", self._backend.conn_version()) logging.debug("%s capabilities:\n%s", self.get_uri(), self.caps.xml) self.schedule_priority_tick(stats_update=True, pollvm=True, pollnet=True, pollpool=True, polliface=True, pollnodedev=True, pollmedia=True) if self.state == self.STATE_DISCONNECTED: if self.connectError: self.idle_emit("connect-error", *self.connectError) self.connectError = None ####################### # Tick/Update methods # ####################### def _update_nets(self, dopoll): if not dopoll or not self.is_network_capable(): return {}, {}, self.nets return pollhelpers.fetch_nets(self._backend, self.nets.copy(), (lambda obj, key: vmmNetwork(self, obj, key))) def _update_pools(self, dopoll): if not dopoll or not self.is_storage_capable(): return {}, {}, self.pools return pollhelpers.fetch_pools(self._backend, self.pools.copy(), (lambda obj, key: vmmStoragePool(self, obj, key))) def _update_interfaces(self, dopoll): if not dopoll or not self.is_interface_capable(): return {}, {}, self.interfaces return pollhelpers.fetch_interfaces(self._backend, self.interfaces.copy(), (lambda obj, key: vmmInterface(self, obj, key))) def _update_nodedevs(self, dopoll): if not dopoll or not self.is_nodedev_capable(): return {}, {}, self.nodedevs return pollhelpers.fetch_nodedevs(self._backend, self.nodedevs.copy(), (lambda obj, key: vmmNodeDevice(self, obj, key))) def _update_vms(self, dopoll): if not dopoll: return {}, {}, self.vms return pollhelpers.fetch_vms(self._backend, self.vms.copy(), (lambda obj, key: vmmDomain(self, obj, key))) def _obj_signal_proxy(self, obj, signal, key): ignore = obj self.emit(signal, key) def schedule_priority_tick(self, **kwargs): # args/kwargs are what is passed to def tick() if "stats_update" not in kwargs: kwargs["stats_update"] = False self.idle_emit("priority-tick", kwargs) def tick(self, stats_update, pollvm=False, pollnet=False, pollpool=False, polliface=False, pollnodedev=False, pollmedia=False): """ main update function: polls for new objects, updates stats, ...""" if self.state != self.STATE_ACTIVE: return if not pollvm: stats_update = False self.hostinfo = self._backend.getInfo() (goneNets, newNets, nets) = self._update_nets(pollnet) (gonePools, newPools, pools) = self._update_pools(pollpool) (goneInterfaces, newInterfaces, interfaces) = self._update_interfaces(polliface) (goneNodedevs, newNodedevs, nodedevs) = self._update_nodedevs(pollnodedev) (goneVMs, newVMs, vms) = self._update_vms(pollvm) def tick_send_signals(): """ Responsible for signaling the UI for any updates. All possible UI updates need to go here to enable threading that doesn't block the app with long tick operations. """ # Connection closed out from under us if not self._backend.is_open(): return self.vms = vms self.nodedevs = nodedevs self.interfaces = interfaces self.pools = pools self.nets = nets # Make sure device polling is setup if not self.netdev_initialized: self._init_netdev() if not self.mediadev_initialized: self._init_mediadev() # Update VM states for uuid, obj in goneVMs.items(): self.emit("vm-removed", uuid) obj.cleanup() for uuid, obj in newVMs.items(): ignore = obj self.emit("vm-added", uuid) # Update virtual network states for uuid, obj in goneNets.items(): self.emit("net-removed", uuid) obj.cleanup() for uuid, obj in newNets.items(): obj.connect("started", self._obj_signal_proxy, "net-started", uuid) obj.connect("stopped", self._obj_signal_proxy, "net-stopped", uuid) self.emit("net-added", uuid) # Update storage pool states for uuid, obj in gonePools.items(): self.emit("pool-removed", uuid) obj.cleanup() for uuid, obj in newPools.items(): obj.connect("started", self._obj_signal_proxy, "pool-started", uuid) obj.connect("stopped", self._obj_signal_proxy, "pool-stopped", uuid) self.emit("pool-added", uuid) # Update interface states for name, obj in goneInterfaces.items(): self.emit("interface-removed", name) obj.cleanup() for name, obj in newInterfaces.items(): obj.connect("started", self._obj_signal_proxy, "interface-started", name) obj.connect("stopped", self._obj_signal_proxy, "interface-stopped", name) self.emit("interface-added", name) # Update nodedev list for name in goneNodedevs: self.emit("nodedev-removed", name) goneNodedevs[name].cleanup() for name in newNodedevs: self.emit("nodedev-added", name) self.idle_add(tick_send_signals) ticklist = [] def add_to_ticklist(l, args=()): ticklist.extend([(o, args) for o in l]) updateVMs = newVMs if stats_update: updateVMs = vms if pollvm: for key in vms: if key in updateVMs: add_to_ticklist([vms[key]], (True,)) else: add_to_ticklist([vms[key]], (stats_update,)) if pollnet: add_to_ticklist(nets.values()) if pollpool: add_to_ticklist(pools.values()) if polliface: add_to_ticklist(interfaces.values()) if pollnodedev: add_to_ticklist(nodedevs.values()) if pollmedia: add_to_ticklist(self.mediadevs.values()) for obj, args in ticklist: try: obj.tick(*args) except Exception, e: logging.exception("Tick for %s failed", obj) if (isinstance(e, libvirt.libvirtError) and (getattr(e, "get_error_code")() == libvirt.VIR_ERR_SYSTEM_ERROR)): # Try a simple getInfo call to see if conn was dropped self._backend.getInfo() logging.debug("vm tick raised system error but " "connection doesn't seem to have dropped. " "Ignoring.") if stats_update: self._recalculate_stats(updateVMs.values()) self.idle_emit("resources-sampled") return 1 def _recalculate_stats(self, vms): if not self._backend.is_open(): return now = time.time() expected = self.config.get_stats_history_length() current = len(self.record) if current > expected: del self.record[expected:current] mem = 0 cpuTime = 0 rdRate = 0 wrRate = 0 rxRate = 0 txRate = 0 diskMaxRate = self.disk_io_max_rate() or 10.0 netMaxRate = self.network_traffic_max_rate() or 10.0 for vm in vms: if not vm.is_active(): continue cpuTime += vm.cpu_time() mem += vm.stats_memory() rdRate += vm.disk_read_rate() wrRate += vm.disk_write_rate() rxRate += vm.network_rx_rate() txRate += vm.network_tx_rate() netMaxRate = max(netMaxRate, vm.network_traffic_max_rate()) diskMaxRate = max(diskMaxRate, vm.disk_io_max_rate()) pcentHostCpu = 0 pcentMem = mem * 100.0 / self.host_memory_size() if len(self.record) > 0: prevTimestamp = self.record[0]["timestamp"] host_cpus = self.host_active_processor_count() pcentHostCpu = ((cpuTime) * 100.0 / ((now - prevTimestamp) * 1000.0 * 1000.0 * 1000.0 * host_cpus)) pcentHostCpu = max(0.0, min(100.0, pcentHostCpu)) pcentMem = max(0.0, min(100.0, pcentMem)) newStats = { "timestamp": now, "memory": mem, "memoryPercent": pcentMem, "cpuTime": cpuTime, "cpuHostPercent": pcentHostCpu, "diskRdRate" : rdRate, "diskWrRate" : wrRate, "netRxRate" : rxRate, "netTxRate" : txRate, "diskMaxRate" : diskMaxRate, "netMaxRate" : netMaxRate, } self.record.insert(0, newStats) ######################## # Stats getter methods # ######################## def _vector_helper(self, record_name): vector = [] stats = self.record for i in range(self.config.get_stats_history_length() + 1): if i < len(stats): vector.append(stats[i][record_name] / 100.0) else: vector.append(0) return vector def stats_memory_vector(self): return self._vector_helper("memoryPercent") def host_cpu_time_vector(self): return self._vector_helper("cpuHostPercent") guest_cpu_time_vector = host_cpu_time_vector def host_cpu_time_vector_limit(self, limit): cpudata = self.host_cpu_time_vector() if len(cpudata) > limit: cpudata = cpudata[0:limit] return cpudata guest_cpu_time_vector_limit = host_cpu_time_vector_limit def disk_io_vector_limit(self, ignore): return [0.0] def network_traffic_vector_limit(self, ignore): return [0.0] def _get_record_helper(self, record_name): if len(self.record) == 0: return 0 return self.record[0][record_name] def stats_memory(self): return self._get_record_helper("memory") def pretty_stats_memory(self): return util.pretty_mem(self.stats_memory()) def host_cpu_time_percentage(self): return self._get_record_helper("cpuHostPercent") guest_cpu_time_percentage = host_cpu_time_percentage def network_rx_rate(self): return self._get_record_helper("netRxRate") def network_tx_rate(self): return self._get_record_helper("netTxRate") def network_traffic_rate(self): return self.network_tx_rate() + self.network_rx_rate() def network_traffic_max_rate(self): return self._get_record_helper("netMaxRate") def disk_read_rate(self): return self._get_record_helper("diskRdRate") def disk_write_rate(self): return self._get_record_helper("diskWrRate") def disk_io_rate(self): return self.disk_read_rate() + self.disk_write_rate() def disk_io_max_rate(self): return self._get_record_helper("diskMaxRate")