# # 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. # from gi.repository import GObject 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.network import vmmNetwork from virtManager.nodedev import vmmNodeDevice from virtManager.storagepool import vmmStoragePool # debugging helper to turn off events _disable_libvirt_events = False 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, _STATE_CONNECTING, _STATE_ACTIVE) = range(1, 4) 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._closing = False self._caps = None self._caps_xml = None self._network_capable = None self._storage_capable = None self._interface_capable = None self._nodedev_capable = None self.using_domain_events = False self._domain_cb_ids = [] self.using_network_events = False self._network_cb_ids = [] self._xml_flags = {} # Physical network interfaces: name -> virtinst.NodeDevice self._nodedevs = {} # Physical media devices: vmmMediaDevice.key -> vmmMediaDevice self._mediadevs = {} # Connection Storage pools: name -> vmmInterface self._interfaces = {} # Connection Storage pools: name -> vmmStoragePool self._pools = {} # Virtual networks: name -> vmmNetwork object self._nets = {} # Virtual machines: name -> vmmDomain object self._vms = {} # Resource utilization statistics self.record = [] self.hostinfo = None self.mediadev_initialized = False self.mediadev_error = "" self.mediadev_use_libvirt = False self._init_virtconn() @staticmethod def pretty_hv(gtype, domtype): """ Convert XML and bar into a more human relevant string. """ gtype = gtype.lower() domtype = domtype.lower() label = domtype if domtype == "kvm": if gtype == "xen": label = "xenner" elif domtype == "xen": if gtype == "xen": label = "xen (paravirt)" elif gtype == "hvm": label = "xen (fullvirt)" elif domtype == "test": if gtype == "xen": label = "test (xen)" elif gtype == "hvm": label = "test (hvm)" return label ################# # 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()]) def fetch_all_vols(): ret = [] for pool in self._pools.values(): for vol in pool.get_volumes(refresh=False).values(): try: ret.append(vol.get_xmlobj(refresh_if_nec=False)) except Exception, e: logging.debug("Fetching volume XML failed: %s", e) return ret self._backend.cb_fetch_all_vols = fetch_all_vols 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_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 connkey in self._vms.keys(): self.emit("vm-added", connkey) elif name == "mediadev-added": for dev in self._mediadevs.values(): self.emit("mediadev-added", dev) elif name == "nodedev-added": for connkey in self._nodedevs.keys(): self.emit("nodedev-added", connkey) 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): 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 fmt if self.check_support(self._backend.SUPPORT_CONN_DEFAULT_QCOW2): return fmt return None #################################### # Connection pretty print routines # #################################### def get_pretty_desc(self, shorthost=True, show_transport=False, show_user=False, show_kvm=False): """ @show_kvm: Show hv as QEMU/KVM. Only works if connection is active though """ 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()) hostname, port = self.get_backend().get_uri_host_port() port = port or "" 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 show_user and username: hostname = username + "@" + hostname if port: hostname += ":" + port 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 show_kvm and self.caps.is_kvm_available(): hv += "/KVM" if show_transport and transport: hv += "+" + transport 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) ####################### # 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.") 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) def get_default_pool(self): for p in self._pools.values(): if p.get_name() == "default": return p return None def get_vol_by_path(self, path): # path_exists will handle stuff like refreshing a busted pool if not virtinst.VirtualDisk.path_exists(self.get_backend(), path): return None for pool in self._pools.values(): for vol in pool.get_volumes().values(): if vol.get_target_path() == path: return vol return None ################################### # Connection state getter/setters # ################################### def _change_state(self, newstate): if self._state != newstate: self._state = newstate logging.debug("conn=%s changed to state=%s", self.get_uri(), self.get_state_text()) self.emit("state-changed") def is_active(self): return self._state == self._STATE_ACTIVE def is_disconnected(self): return self._state == self._STATE_DISCONNECTED def is_connecting(self): return self._state == self._STATE_CONNECTING def get_state_text(self): if self.is_disconnected(): return _("Disconnected") elif self.is_connecting(): return _("Connecting") elif self.is_active(): return _("Active") else: return _("Unknown") ################################# # Libvirt object lookup methods # ################################# def get_vm(self, connkey): return self._vms[connkey] def list_vms(self): return self._vms.values() def get_net(self, connkey): return self._nets[connkey] def list_nets(self): return self._nets.values() def get_pool(self, connkey): return self._pools[connkey] def list_pools(self): return self._pools.values() def get_interface(self, connkey): return self._interfaces[connkey] def list_interfaces(self): return self._interfaces.values() def get_nodedev(self, connkey): return self._nodedevs[connkey] 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 ################################### # 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) ######################### # Domain event handling # ######################### # Our strategy here isn't the most efficient: since we need to keep the # poll helpers around for compat with old libvirt, switching to a fully # event driven setup is hard, so we end up doing more polling than # necessary on most events. def _domain_xml_misc_event(self, conn, domain, *args): # Just trigger a domain XML refresh for hotplug type events ignore = conn ignore = args obj = self._vms.get(domain.name(), None) if not obj: return self.idle_add(obj.refresh_xml, True) def _domain_lifecycle_event(self, conn, domain, event, reason, userdata): ignore = conn ignore = reason ignore = userdata obj = self._vms.get(domain.name(), None) if obj: # If the domain disappeared, this will catch it and trigger # a domain list refresh self.idle_add(obj.force_update_status, True) if event == libvirt.VIR_DOMAIN_EVENT_DEFINED: self.idle_add(obj.refresh_xml, True) else: self.schedule_priority_tick(pollvm=True, force=True) def _network_lifecycle_event(self, conn, network, event, reason, userdata): ignore = conn ignore = reason ignore = userdata obj = self._nets.get(network.name(), None) if obj: self.idle_add(obj.force_update_status, True) if event == getattr(libvirt, "VIR_NETWORK_EVENT_DEFINED", 0): self.idle_add(obj.refresh_xml, True) else: self.schedule_priority_tick(pollnet=True, force=True) def _add_conn_events(self): try: if _disable_libvirt_events: raise RuntimeError("_disable_libvirt_events = True") self._domain_cb_ids.append( self.get_backend().domainEventRegisterAny( None, libvirt.VIR_DOMAIN_EVENT_ID_LIFECYCLE, self._domain_lifecycle_event, None)) self.using_domain_events = True logging.debug("Using domain events") except Exception, e: self.using_domain_events = False logging.debug("Error registering domain events: %s", e) def _add_domain_xml_event(eventid, typestr): if not self.using_domain_events: return try: self._domain_cb_ids.append( self.get_backend().domainEventRegisterAny( None, eventid, self._domain_xml_misc_event, None)) except Exception, e: logging.debug("Error registering domain %s event: %s", typestr, e) _add_domain_xml_event( getattr(libvirt, "VIR_DOMAIN_EVENT_ID_BALLOON_CHANGE", 13), "balloon") _add_domain_xml_event( getattr(libvirt, "VIR_DOMAIN_EVENT_ID_TRAY_CHANGE", 10), "tray") _add_domain_xml_event( getattr(libvirt, "VIR_DOMAIN_EVENT_ID_DEVICE_REMOVED", 15), "device removed") try: if _disable_libvirt_events: raise RuntimeError("_disable_libvirt_events = True") eventid = getattr(libvirt, "VIR_NETWORK_EVENT_ID_LIFECYCLE", 0) self._network_cb_ids.append( self.get_backend().networkEventRegisterAny( None, eventid, self._network_lifecycle_event, None)) self.using_network_events = True logging.debug("Using network events") except Exception, e: self.using_network_events = False logging.debug("Error registering network events: %s", e) #################### # Update listeners # #################### def _nodedev_mediadev_added(self, ignore1, name): def _add_thread(): if name in self._mediadevs: return vobj = self.get_nodedev(name) mediadev = vmmMediaDevice.mediadev_from_nodedev(vobj) if not mediadev: return def _add_idle(): self._mediadevs[name] = mediadev logging.debug("mediadev=%s added", name) self.emit("mediadev-added", mediadev) self.idle_add(_add_idle) threading.Thread(target=_add_thread, name="AddMediadev").start() def _nodedev_mediadev_removed(self, ignore1, name): if name not in self._mediadevs: return self._mediadevs[name].cleanup() del(self._mediadevs[name]) logging.debug("mediadev=%s removed", 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 _schedule_close(self): self._closing = True self.idle_add(self.close) def close(self): if not self.is_disconnected(): logging.debug("conn.close() uri=%s", self.get_uri()) self._closing = True def cleanup(devs): for dev in devs.values(): try: dev.cleanup() except: logging.debug("Failed to cleanup %s", exc_info=True) try: if not self._backend.is_closed(): for eid in self._domain_cb_ids: self._backend.domainEventDeregisterAny(eid) for eid in self._network_cb_ids: self._backend.networkEventDeregisterAny(eid) except: logging.debug("Failed to deregister events in conn cleanup", exc_info=True) finally: self._domain_cb_ids = [] self._network_cb_ids = [] self._backend.close() self.record = [] cleanup(self._nodedevs) self._nodedevs = {} 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) self._closing = False def _cleanup(self): self.close() self._connectError = None def open(self, sync=False): if not self.is_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: logging.debug("Launching creds dialog failed", exc_info=True) return -1 def _do_open(self, retry_for_tgt=True): warnconsole = False libvirt_error_code = None libvirt_error_message = None try: self._backend.open(self._do_creds_password) return True except Exception, exc: tb = "".join(traceback.format_exc()) if type(exc) is libvirt.libvirtError: libvirt_error_code = exc.get_error_code() libvirt_error_message = exc.get_error_message() if (libvirt_error_code == getattr(libvirt, "VIR_ERR_AUTH_CANCELLED", None)): logging.debug("User cancelled auth, not raising any error.") return if (libvirt_error_code == libvirt.VIR_ERR_AUTH_FAILED and "not authorized" in libvirt_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 (libvirt_error_code == libvirt.VIR_ERR_AUTH_FAILED and "GSSAPI Error" in libvirt_error_message and "No credentials cache found" in libvirt_error_message): if retry_for_tgt and connectauth.acquire_tgt(): self._do_open(retry_for_tgt=False) self._connectError = (str(exc), tb, warnconsole) def _populate_initial_state(self): 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._add_conn_events() try: self._backend.setKeepAlive(20, 1) except Exception, e: if (type(e) is not AttributeError and not util.is_error_nosupport(e)): raise logging.debug("Connection doesn't support KeepAlive, " "skipping") def _open_thread(self): is_active = False try: is_active = self._do_open() if is_active: self._populate_initial_state() self.idle_add(self._change_state, is_active and self._STATE_ACTIVE or self._STATE_DISCONNECTED) if is_active: self.schedule_priority_tick(stats_update=True, pollvm=True, pollnet=True, pollpool=True, polliface=True, pollnodedev=True, pollmedia=True, force=True) except Exception, e: is_active = False self._schedule_close() self._connectError = (str(e), "".join(traceback.format_exc()), False) if not is_active: 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, *args, **kwargs): e = None try: self._tick(*args, **kwargs) except KeyboardInterrupt: raise except Exception, e: pass if e is None: return from_remote = getattr(libvirt, "VIR_FROM_REMOTE", None) from_rpc = getattr(libvirt, "VIR_FROM_RPC", None) sys_error = getattr(libvirt, "VIR_ERR_SYSTEM_ERROR", None) dom = -1 code = -1 if isinstance(e, libvirt.libvirtError): dom = e.get_error_domain() code = e.get_error_code() logging.debug("Error polling connection %s", self.get_uri(), exc_info=True) if (dom in [from_remote, from_rpc] and code in [sys_error]): e = None logging.debug("Not showing user error since libvirtd " "appears to have stopped.") self._schedule_close() if e: raise e # pylint: disable=raising-bad-type def _tick(self, stats_update, pollvm=False, pollnet=False, pollpool=False, polliface=False, pollnodedev=False, pollmedia=False, force=False): """ main update function: polls for new objects, updates stats, ... @force: Perform the requested polling even if async events are in use """ if not self.is_active() or self._closing: return if not pollvm: stats_update = False if self.using_domain_events and not force: pollvm = False if self.using_network_events and not force: pollnet = 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 if pollvm: self._vms = vms if pollnet: self._nets = nets if polliface: self._interfaces = interfaces if pollpool: self._pools = pools if pollnodedev: self._nodedevs = nodedevs if not self.mediadev_initialized: self._init_mediadev() # Update VM states for connkey, obj in goneVMs.items(): logging.debug("domain=%s removed", obj.get_name()) self.emit("vm-removed", connkey) obj.cleanup() for connkey, obj in newVMs.items(): logging.debug("domain=%s status=%s added", obj.get_name(), obj.run_status()) self.emit("vm-added", connkey) # Update virtual network states for connkey, obj in goneNets.items(): logging.debug("network=%s removed", obj.get_name()) self.emit("net-removed", connkey) obj.cleanup() for connkey, obj in newNets.items(): logging.debug("network=%s added", obj.get_name()) obj.connect("started", self._obj_signal_proxy, "net-started", connkey) obj.connect("stopped", self._obj_signal_proxy, "net-stopped", connkey) self.emit("net-added", connkey) # Update storage pool states for connkey, obj in gonePools.items(): logging.debug("pool=%s removed", obj.get_name()) self.emit("pool-removed", connkey) obj.cleanup() for connkey, obj in newPools.items(): logging.debug("pool=%s added", obj.get_name()) obj.connect("started", self._obj_signal_proxy, "pool-started", connkey) obj.connect("stopped", self._obj_signal_proxy, "pool-stopped", connkey) self.emit("pool-added", connkey) # Update interface states for name, obj in goneInterfaces.items(): logging.debug("interface=%s removed", obj.get_name()) self.emit("interface-removed", name) obj.cleanup() for name, obj in newInterfaces.items(): logging.debug("interface=%s added", obj.get_name()) 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 stats_update: 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")