def juju_state():
cfg = Config(CONFIGOBJ)
if not len(cfg.juju_env['state-servers']) > 0:
state_server = 'localhost:17070'
else:
state_server = cfg.juju_env['state-servers'][0]
juju = JujuClient(url=path.join('wss://', state_server),
password=cfg.juju_api_password)
juju.login()
return JujuState(juju)
def authenticate_juju(self):
if not len(self.config.juju_env['state-servers']) > 0:
state_server = 'localhost:17070'
else:
state_server = self.config.juju_env['state-servers'][0]
self.juju = JujuClient(url=path.join('wss://', state_server),
password=self.config.juju_api_password)
self.juju.login()
self.juju_state = JujuState(self.juju)
log.debug('Authenticated against juju api.')
def juju_state():
cfg = Config(CONFIGOBJ)
if not len(cfg.juju_env['state-servers']) > 0:
state_server = 'localhost:17070'
else:
state_server = cfg.juju_env['state-servers'][0]
juju = JujuClient(
url=path.join('wss://', state_server),
password=cfg.juju_api_password)
juju.login()
return JujuState(juju)
def authenticate_juju(self):
if not len(self.config.juju_env["state-servers"]) > 0:
state_server = "localhost:17070"
else:
state_server = self.config.juju_env["state-servers"][0]
self.juju = JujuClient(url=path.join("wss://", state_server), password=self.config.juju_api_password)
self.juju.login()
self.juju_state = JujuState(self.juju)
log.debug("Authenticated against juju api.")
def authenticate_juju(self):
if not len(self.config.juju_env['state-servers']) > 0:
state_server = 'localhost:17070'
else:
state_server = self.config.juju_env['state-servers'][0]
self.juju = JujuClient(
url=path.join('wss://', state_server),
password=self.config.juju_api_password)
self.juju.login()
self.juju_state = JujuState(self.juju)
log.debug('Authenticated against juju api.')
#!/usr/bin/env python
import sys
sys.path.insert(0, '../cloudinstall')
from macumba import JujuClient
from pprint import pprint
JUJU_PASS = '******'
JUJU_URL = 'wss://localhost:17070/'
if __name__ == '__main__':
ws = JujuClient(url=JUJU_URL, password=JUJU_PASS)
ws.login()
t = ws.status()
pprint(t)
#ws.add_machine()
# ws.deploy('mysql')
# ws.deploy('wordpress', dict(charm_url='cs:precise/wordpress-24'))
# ws.deploy('juju-gui')
#
# ws.add_relation('mysql', 'wordpress')
# ws.add_unit('mysql')
ws.close()
class Controller:
""" Controller for Juju deployments and Maas machine init """
def __init__(self, ui, config, loop):
self.ui = ui
self.ui.controller = self
self.config = config
self.loop = loop
self.juju_state = None
self.juju = None
self.maas = None
self.maas_state = None
self.nodes = []
self.juju_m_idmap = None # for single, {instance_id: machine id}
self.deployed_charm_classes = []
self.placement_controller = None
self.config.setopt('current_state', ControllerState.INSTALL_WAIT.value)
def update(self, *args, **kwargs):
"""Render UI according to current state and reset timer
PegasusGUI only.
"""
interval = 1
current_state = self.config.getopt('current_state')
if current_state == ControllerState.PLACEMENT:
self.ui.render_placement_view(self.loop,
self.config,
self.commit_placement)
elif current_state == ControllerState.INSTALL_WAIT:
self.ui.render_node_install_wait(message="Waiting...")
interval = self.config.node_install_wait_interval
elif current_state == ControllerState.ADD_SERVICES:
self.ui.render_add_services_dialog(self.deploy_new_services,
self.cancel_add_services)
elif current_state == ControllerState.SERVICES:
self.update_node_states()
else:
raise Exception("Internal error, unexpected display "
"state '{}'".format(current_state))
self.loop.redraw_screen()
self.loop.set_alarm_in(interval, self.update)
def update_node_states(self):
""" Updating node states
PegasusGUI only
"""
if not self.juju_state:
return
deployed_services = sorted(self.juju_state.services,
key=attrgetter('service_name'))
deployed_service_names = [s.service_name for s in deployed_services]
charm_classes = sorted(
[m.__charm_class__ for m in
utils.load_charms(self.config.getopt('charm_plugin_dir'))
if m.__charm_class__.charm_name in
deployed_service_names],
key=attrgetter('charm_name'))
self.nodes = list(zip(charm_classes, deployed_services))
for n in deployed_services:
for u in n.units:
if u.is_horizon and u.agent_state == "started":
self.ui.set_dashboard_url(
u.public_address, 'ubuntu',
self.config.getopt('openstack_password'))
if u.is_jujugui and u.agent_state == "started":
self.ui.set_jujugui_url(u.public_address)
if len(self.nodes) == 0:
return
else:
self.ui.render_services_view(self.nodes, self.juju_state,
self.maas_state, self.config)
def authenticate_juju(self):
if not len(self.config.juju_env['state-servers']) > 0:
state_server = 'localhost:17070'
else:
state_server = self.config.juju_env['state-servers'][0]
self.juju = JujuClient(
url=path.join('wss://', state_server),
password=self.config.juju_api_password)
self.juju.login()
self.juju_state = JujuState(self.juju)
log.debug('Authenticated against juju api.')
def initialize(self):
"""Authenticates against juju/maas and sets up placement controller."""
if getenv("FAKE_API_DATA"):
self.juju_state = FakeJujuState()
self.maas_state = FakeMaasState()
else:
self.authenticate_juju()
if self.config.is_multi():
creds = self.config.getopt('maascreds')
self.maas, self.maas_state = connect_to_maas(creds)
self.placement_controller = PlacementController(
self.maas_state, self.config)
if path.exists(self.config.placements_filename):
with open(self.config.placements_filename, 'r') as pf:
self.placement_controller.load(pf)
self.ui.status_info_message("Loaded placements from file.")
log.info("Loaded placements from "
"'{}'".format(self.config.placements_filename))
# If we have no machines (so we are a fresh install) but
# are reading a placements.yaml from a previous install,
# so it has no assignments, only deployments, tell the
# controller to use the deployments in the file as
# assignments:
if len(self.placement_controller.machines_pending()) == 0 and \
len(self.juju_state.machines()) == 0:
self.placement_controller.set_assignments_from_deployments()
log.info("Using deployments saved from previous install"
" as new assignments.")
else:
if self.config.is_multi():
def_assignments = self.placement_controller.gen_defaults()
else:
def_assignments = self.placement_controller.gen_single()
self.placement_controller.set_all_assignments(def_assignments)
pfn = self.config.placements_filename
self.placement_controller.set_autosave_filename(pfn)
self.placement_controller.do_autosave()
if self.config.is_single():
if self.config.getopt('headless'):
self.begin_deployment()
else:
self.begin_deployment_async()
return
if self.config.getopt('edit_placement') or \
not self.placement_controller.can_deploy():
self.config.setopt(
'current_state', ControllerState.PLACEMENT.value)
else:
if self.config.getopt('headless'):
self.begin_deployment()
else:
self.begin_deployment_async()
@utils.async
def wait_for_maas_async(self):
""" explicit async method
"""
self.wait_for_maas()
def wait_for_maas(self):
""" install and configure maas """
random_status = ["Packages are being installed to a MAAS container.",
"There's a few packages, it'll take just a minute",
"Checkout http://maas.ubuntu.com/ while you wait."]
is_connected = False
count = 0
while not is_connected:
self.ui.render_node_install_wait(message="Waiting...")
self.ui.status_info_message(
random_status[random.randrange(len(random_status))])
count = count + 1
self.ui.status_info_message(
"Waiting for MAAS (tries {0})".format(count))
uri = path.join('http://', utils.container_ip('maas'), 'MAAS')
log.debug("Checking MAAS availability ({0})".format(uri))
try:
res = requests.get(uri)
is_connected = res.ok
except:
self.ui.status_info_message("Waiting for MAAS to be installed")
time.sleep(10)
# Render nodeview, even though nothing is there yet.
self.initialize()
def commit_placement(self):
self.config.setopt('current_state', ControllerState.SERVICES.value)
self.ui.render_services_view(self.nodes, self.juju_state,
self.maas_state, self.config)
self.loop.redraw_screen()
if self.config.getopt('headless'):
self.begin_deployment()
else:
self.begin_deployment_async()
@utils.async
def begin_deployment_async(self):
""" async deployment
"""
self.begin_deployment()
def begin_deployment(self):
if self.config.is_multi():
# now all machines are added
self.maas.tag_fpi(self.maas.nodes)
self.maas.nodes_accept_all()
self.maas.tag_name(self.maas.nodes)
while not self.all_maas_machines_ready():
time.sleep(3)
self.add_machines_to_juju_multi()
elif self.config.is_single():
self.add_machines_to_juju_single()
# Quiet out some of the logging
_previous_summary = None
while not self.all_juju_machines_started():
sd = self.juju_state.machines_summary()
summary = ", ".join(["{} {}".format(v, k) for k, v
in sd.items()])
if summary != _previous_summary:
self.ui.status_info_message("Waiting for machines to "
"start: {}".format(summary))
_previous_summary = summary
time.sleep(1)
if len(self.juju_state.machines()) == 0:
raise Exception("Expected some juju machines started.")
self.config.setopt('current_state', ControllerState.SERVICES.value)
if self.config.is_single():
controller_machine = self.juju_m_idmap['controller']
self.configure_lxc_network(controller_machine)
for juju_machine_id in self.juju_m_idmap.values():
self.run_apt_go_fast(juju_machine_id)
if self.config.is_single():
self.set_unique_hostnames()
self.deploy_using_placement()
self.wait_for_deployed_services_ready()
self.enqueue_deployed_charms()
def set_unique_hostnames(self):
"""checks for and ensures unique hostnames, so e.g. ceph can assume
that.
FIXME: Remove once http://pad.lv/1326091 is fixed
"""
count = 0
for machine in self.juju_state.machines():
count += 1
hostname = machine.machine.get('InstanceId',
"ubuntu-{}".format(count))
log.debug("Setting hostname of {} to {}".format(machine,
hostname))
juju_home = self.config.juju_home(use_expansion=True)
utils.remote_run(
machine.machine_id,
cmds="echo {} | sudo tee /etc/hostname".format(hostname),
juju_home=juju_home)
utils.remote_run(
machine.machine_id,
cmds="sudo hostname {}".format(hostname),
juju_home=juju_home)
def all_maas_machines_ready(self):
self.maas_state.invalidate_nodes_cache()
needed = set([m.instance_id for m in
self.placement_controller.machines_pending()])
ready = set([m.instance_id for m in
self.maas_state.machines(MaasMachineStatus.READY)])
allocated = set([m.instance_id for m in
self.maas_state.machines(MaasMachineStatus.ALLOCATED)
])
summary = ", ".join(["{} {}".format(v, k) for k, v in
self.maas_state.machines_summary().items()])
self.ui.status_info_message("Waiting for {} maas machines to be ready."
" Machines Summary: {}".format(len(needed),
summary))
if not needed.issubset(ready.union(allocated)):
return False
return True
def add_machines_to_juju_multi(self):
"""Adds each of the machines used for the placement to juju, if it
isn't already there."""
self.juju_state.invalidate_status_cache()
juju_ids = [jm.instance_id for jm in self.juju_state.machines()]
machine_params = []
for maas_machine in self.placement_controller.machines_pending():
if maas_machine.instance_id in juju_ids:
# ignore machines that are already added to juju
continue
cd = dict(tags=[maas_machine.system_id])
mp = dict(Series="", ContainerType="", ParentId="",
Constraints=cd, Jobs=[JujuJobs.HostUnits])
machine_params.append(mp)
if len(machine_params) > 0:
import pprint
log.debug("calling add_machines with params:"
" {}".format(pprint.pformat(machine_params)))
rv = self.juju.add_machines(machine_params)
log.debug("add_machines returned '{}'".format(rv))
def all_juju_machines_started(self):
self.juju_state.invalidate_status_cache()
n_needed = len(self.placement_controller.machines_pending())
n_allocated = len([jm for jm in self.juju_state.machines()
if jm.agent_state == 'started'])
return n_allocated >= n_needed
def add_machines_to_juju_single(self):
self.juju_state.invalidate_status_cache()
self.juju_m_idmap = {}
for jm in self.juju_state.machines():
response = self.juju.get_annotations(jm.machine_id,
'machine')
ann = response['Annotations']
if 'instance_id' in ann:
self.juju_m_idmap[ann['instance_id']] = jm.machine_id
log.debug("existing juju machines: {}".format(self.juju_m_idmap))
def get_created_machine_id(iid, response):
d = response['Machines'][0]
if d['Error']:
raise Exception("Error adding machine '{}':"
"{}".format(iid, response))
else:
return d['Machine']
for machine in self.placement_controller.machines_pending():
if machine.instance_id in self.juju_m_idmap:
machine.machine_id = self.juju_m_idmap[machine.instance_id]
log.debug("machine instance_id {} already exists as #{}, "
"skipping".format(machine.instance_id,
machine.machine_id))
continue
log.debug("adding machine with "
"constraints={}".format(machine.constraints))
rv = self.juju.add_machine(constraints=machine.constraints)
m_id = get_created_machine_id(machine.instance_id, rv)
machine.machine_id = m_id
rv = self.juju.set_annotations(m_id, 'machine',
{'instance_id':
machine.instance_id})
self.juju_m_idmap[machine.instance_id] = m_id
def run_apt_go_fast(self, machine_id):
utils.remote_cp(machine_id,
src=path.join(self.config.share_path,
"tools/apt-go-fast"),
dst="/tmp/apt-go-fast",
juju_home=self.config.juju_home(use_expansion=True))
utils.remote_run(machine_id,
cmds="sudo sh /tmp/apt-go-fast",
juju_home=self.config.juju_home(use_expansion=True))
def configure_lxc_network(self, machine_id):
# upload our lxc-host-only template and setup bridge
log.info('Copying network specifications to machine')
srcpath = path.join(self.config.tmpl_path, 'lxc-host-only')
destpath = "/tmp/lxc-host-only"
utils.remote_cp(machine_id, src=srcpath, dst=destpath,
juju_home=self.config.juju_home(use_expansion=True))
log.debug('Updating network configuration for machine')
utils.remote_run(machine_id,
cmds="sudo chmod +x /tmp/lxc-host-only",
juju_home=self.config.juju_home(use_expansion=True))
utils.remote_run(machine_id,
cmds="sudo /tmp/lxc-host-only",
juju_home=self.config.juju_home(use_expansion=True))
def deploy_using_placement(self):
"""Deploy charms using machine placement from placement controller,
waiting for any deferred charms. Then enqueue all charms for
further processing and return.
"""
self.ui.status_info_message("Verifying service deployments")
assigned_ccs = self.placement_controller.assigned_charm_classes()
charm_classes = sorted(assigned_ccs,
key=attrgetter('deploy_priority'))
def undeployed_charm_classes():
return [c for c in charm_classes
if c not in self.deployed_charm_classes]
def update_pending_display():
pending_names = [c.display_name for c in
undeployed_charm_classes()]
self.ui.set_pending_deploys(pending_names)
while len(undeployed_charm_classes()) > 0:
update_pending_display()
for charm_class in undeployed_charm_classes():
self.ui.status_info_message(
"Checking if {c} is deployed".format(
c=charm_class.display_name))
service_names = [s.service_name for s in
self.juju_state.services]
if charm_class.charm_name in service_names:
self.ui.status_info_message(
"{c} is already deployed, skipping".format(
c=charm_class.display_name))
self.deployed_charm_classes.append(charm_class)
continue
err = self.try_deploy(charm_class)
name = charm_class.display_name
if err:
log.debug(
"{} is waiting for another service, will"
" re-try in a few seconds".format(name))
break
else:
log.debug("Issued deploy for {}".format(name))
self.deployed_charm_classes.append(charm_class)
self.juju_state.invalidate_status_cache()
update_pending_display()
num_remaining = len(undeployed_charm_classes())
if num_remaining > 0:
log.debug("{} charms pending deploy.".format(num_remaining))
log.debug("deployed_charm_classes={}".format(
PrettyLog(self.deployed_charm_classes)))
time.sleep(5)
update_pending_display()
def try_deploy(self, charm_class):
"returns True if deploy is deferred and should be tried again."
charm = charm_class(juju=self.juju,
juju_state=self.juju_state,
ui=self.ui,
config=self.config)
asts = self.placement_controller.get_assignments(charm_class)
errs = []
first_deploy = True
for atype, ml in asts.items():
for machine in ml:
mspec = self.get_machine_spec(machine, atype)
if mspec is None:
errs.append(machine)
continue
if first_deploy:
msg = "Deploying {c}".format(c=charm_class.display_name)
if mspec != '':
msg += " to machine {mspec}".format(mspec=mspec)
self.ui.status_info_message(msg)
deploy_err = charm.deploy(mspec)
if deploy_err:
errs.append(machine)
else:
first_deploy = False
else:
# service already deployed, need to add-unit
msg = ("Adding one unit of "
"{c}".format(c=charm_class.display_name))
if mspec != '':
msg += " to machine {mspec}".format(mspec=mspec)
self.ui.status_info_message(msg)
deploy_err = charm.add_unit(machine_spec=mspec)
if deploy_err:
errs.append(machine)
if not deploy_err:
self.placement_controller.mark_deployed(machine,
charm_class,
atype)
had_err = len(errs) > 0
if had_err and not self.config.getopt('headless'):
log.warning("deferred deploying to these machines: {}".format(
errs))
return had_err
def get_machine_spec(self, maas_machine, atype):
"""Given a machine and assignment type, return a juju machine spec.
Returns None on errors, and '' for the subordinate char placeholder.
"""
if self.placement_controller.is_placeholder(maas_machine.instance_id):
# placeholder machines do not use a machine spec
return ""
jm = next((m for m in self.juju_state.machines()
if (m.instance_id == maas_machine.instance_id or
m.machine_id == maas_machine.machine_id)), None)
if jm is None:
log.error("could not find juju machine matching {}"
" (instance id {})".format(maas_machine,
maas_machine.instance_id))
return None
if atype == AssignmentType.BareMetal \
or atype == AssignmentType.DEFAULT:
return jm.machine_id
elif atype == AssignmentType.LXC:
return "lxc:{}".format(jm.machine_id)
elif atype == AssignmentType.KVM:
return "kvm:{}".format(jm.machine_id)
else:
log.error("unexpected atype: {}".format(atype))
return None
def wait_for_deployed_services_ready(self):
""" Blocks until all deployed services attached units
are in a 'started' state
"""
if not self.juju_state:
return
self.ui.status_info_message(
"Waiting for deployed services to be in a ready state.")
not_ready_len = 0
while not self.juju_state.all_agents_started():
not_ready = [(a, b) for a, b in self.juju_state.get_agent_states()
if b != 'started']
if len(not_ready) == not_ready_len:
time.sleep(3)
continue
not_ready_len = len(not_ready)
log.info("Checking availability of {} ".format(
", ".join(["{}:{}".format(a, b) for a, b in not_ready])))
time.sleep(3)
self.ui.status_info_message(
"Processing relations and finalizing services")
def enqueue_deployed_charms(self):
"""Send all deployed charms to CharmQueue for relation setting and
post-proc.
"""
charm_q = CharmQueue(ui=self.ui, config=self.config,
juju=self.juju, juju_state=self.juju_state,
deployed_charms=self.deployed_charm_classes)
if self.config.getopt('headless'):
charm_q.watch_relations()
charm_q.watch_post_proc()
else:
charm_q.watch_relations_async()
charm_q.watch_post_proc_async()
charm_q.is_running = True
# Exit cleanly if we've finished all deploys, relations,
# post processing, and running in headless mode.
if self.config.getopt('headless'):
while not self.config.getopt('deploy_complete'):
self.ui.status_info_message(
"Waiting for services to be started.")
# FIXME: Is this needed?
# time.sleep(10)
self.ui.status_info_message(
"All services deployed, relations set, and started")
self.loop.exit(0)
self.ui.status_info_message(
"Services deployed, relationships may still be"
" pending. Please wait for all services to be checked before"
" deploying compute nodes")
self.ui.render_services_view(self.nodes, self.juju_state,
self.maas_state, self.config)
self.loop.redraw_screen()
@utils.async
def deploy_new_services(self):
"""Deploys newly added services in background thread.
Does not attempt to create new machines.
"""
self.config.setopt('current_state', ControllerState.SERVICES.value)
self.ui.render_services_view(self.nodes, self.juju_state,
self.maas_state, self.config)
self.loop.redraw_screen()
self.deploy_using_placement()
self.wait_for_deployed_services_ready()
self.set_unique_hostnames()
self.enqueue_deployed_charms()
def cancel_add_services(self):
"""User cancelled add-services screen.
Just redisplay services view.
"""
self.config.setopt('current_state',
ControllerState.SERVICES.value)
self.ui.render_services_view(self.nodes, self.juju_state,
self.maas_state, self.config)
self.loop.redraw_screen()
def start(self):
""" Starts UI loop
"""
if self.config.getopt('headless'):
self.initialize()
else:
self.ui.status_info_message("Welcome")
self.initialize()
self.loop.register_callback('refresh_display', self.update)
self.loop.set_alarm_in(0, self.update)
self.loop.run()
self.loop.close()
class Controller:
""" Controller for Juju deployments and Maas machine init """
def __init__(self, ui, config, loop):
self.ui = ui
self.ui.controller = self
self.config = config
self.loop = loop
self.juju_state = None
self.juju = None
self.maas = None
self.maas_state = None
self.nodes = []
self.juju_m_idmap = None # for single, {instance_id: machine id}
self.deployed_charm_classes = []
self.placement_controller = None
if not self.config.getopt('current_state'):
self.config.setopt('current_state',
ControllerState.INSTALL_WAIT.value)
def update(self, *args, **kwargs):
"""Render UI according to current state and reset timer
PegasusGUI only.
"""
interval = 1
current_state = self.config.getopt('current_state')
if current_state == ControllerState.PLACEMENT:
self.ui.render_placement_view(self.loop,
self.config,
self.commit_placement)
elif current_state == ControllerState.INSTALL_WAIT:
if self.ui.node_install_wait_view is None:
self.ui.render_node_install_wait(
message="Installer is initializing nodes. Please wait.")
else:
self.ui.node_install_wait_view.redraw_kitt()
interval = self.config.node_install_wait_interval
elif current_state == ControllerState.ADD_SERVICES:
def submit_deploy():
async.submit(self.deploy_new_services,
self.ui.show_exception_message)
self.ui.render_add_services_dialog(
submit_deploy, self.cancel_add_services)
elif current_state == ControllerState.SERVICES:
self.update_node_states()
else:
raise Exception("Internal error, unexpected display "
"state '{}'".format(current_state))
self.loop.redraw_screen()
AlarmMonitor.add_alarm(self.loop.set_alarm_in(interval, self.update),
"core-controller-update")
def update_node_states(self):
""" Updating node states
PegasusGUI only
"""
if not self.juju_state:
return
deployed_services = sorted(self.juju_state.services,
key=attrgetter('service_name'))
deployed_service_names = [s.service_name for s in deployed_services]
charm_classes = sorted(
[m.__charm_class__ for m in
utils.load_charms(self.config.getopt('charm_plugin_dir'))
if m.__charm_class__.charm_name in
deployed_service_names],
key=attrgetter('charm_name'))
self.nodes = list(zip(charm_classes, deployed_services))
if len(self.nodes) == 0:
return
else:
if not self.ui.services_view:
self.ui.render_services_view(
self.nodes, self.juju_state,
self.maas_state, self.config)
else:
self.ui.refresh_services_view(self.nodes, self.config)
def authenticate_juju(self):
if not len(self.config.juju_env['state-servers']) > 0:
state_server = 'localhost:17070'
else:
state_server = self.config.juju_env['state-servers'][0]
self.juju = JujuClient(
url=path.join('wss://', state_server),
password=self.config.juju_api_password)
self.juju.login()
self.juju_state = JujuState(self.juju)
log.debug('Authenticated against juju api.')
def initialize(self):
"""Authenticates against juju/maas and sets up placement controller."""
if getenv("FAKE_API_DATA"):
self.juju_state = FakeJujuState()
self.maas_state = FakeMaasState()
else:
self.authenticate_juju()
if self.config.is_multi():
creds = self.config.getopt('maascreds')
self.maas, self.maas_state = connect_to_maas(creds)
self.placement_controller = PlacementController(
self.maas_state, self.config)
if path.exists(self.config.placements_filename):
try:
with open(self.config.placements_filename, 'r') as pf:
self.placement_controller.load(pf)
except Exception:
log.exception("Exception loading placement")
raise Exception("Could not load "
"{}.".format(self.config.placements_filename))
self.ui.status_info_message("Loaded placements from file")
log.info("Loaded placements from "
"'{}'".format(self.config.placements_filename))
# If we have no machines (so we are a fresh install) but
# are reading a placements.yaml from a previous install,
# so it has no assignments, only deployments, tell the
# controller to use the deployments in the file as
# assignments:
if len(self.placement_controller.machines_pending()) == 0 and \
len(self.juju_state.machines()) == 0:
self.placement_controller.set_assignments_from_deployments()
log.info("Using deployments saved from previous install"
" as new assignments.")
else:
if self.config.is_multi():
def_assignments = self.placement_controller.gen_defaults()
else:
def_assignments = self.placement_controller.gen_single()
self.placement_controller.set_all_assignments(def_assignments)
pfn = self.config.placements_filename
self.placement_controller.set_autosave_filename(pfn)
self.placement_controller.do_autosave()
if self.config.is_single():
if self.config.getopt('headless'):
self.begin_deployment()
else:
async.submit(self.begin_deployment,
self.ui.show_exception_message)
return
if self.config.getopt('edit_placement') or \
not self.placement_controller.can_deploy():
self.config.setopt(
'current_state', ControllerState.PLACEMENT.value)
else:
if self.config.getopt('headless'):
self.begin_deployment()
else:
async.submit(self.begin_deployment,
self.ui.show_exception_message)
def commit_placement(self):
self.config.setopt('current_state', ControllerState.SERVICES.value)
self.ui.render_services_view(self.nodes, self.juju_state,
self.maas_state, self.config)
self.loop.redraw_screen()
if self.config.getopt('headless'):
self.begin_deployment()
else:
async.submit(self.begin_deployment,
self.ui.show_exception_message)
def begin_deployment(self):
if self.config.is_multi():
# now all machines are added
self.maas.tag_fpi(self.maas.nodes)
self.maas.nodes_accept_all()
self.maas.tag_name(self.maas.nodes)
while not self.all_maas_machines_ready():
time.sleep(3)
self.add_machines_to_juju_multi()
elif self.config.is_single():
self.add_machines_to_juju_single()
# Quiet out some of the logging
_previous_summary = None
while not self.all_juju_machines_started():
sd = self.juju_state.machines_summary()
summary = ", ".join(["{} {}".format(v, k) for k, v
in sd.items()])
if summary != _previous_summary:
self.ui.status_info_message("Waiting for machines to "
"start: {}".format(summary))
_previous_summary = summary
async.sleep_until(1)
if len(self.juju_state.machines()) == 0:
raise Exception("Expected some juju machines started.")
self.config.setopt('current_state', ControllerState.SERVICES.value)
ppc = self.config.getopt("postproc_complete")
rc = self.config.getopt("relations_complete")
if not ppc or not rc:
if self.config.is_single():
controller_machine = self.juju_m_idmap['controller']
self.configure_lxc_network(controller_machine)
for juju_machine_id in self.juju_m_idmap.values():
async.sleep_until(0)
self.run_apt_go_fast(juju_machine_id)
self.deploy_using_placement()
self.wait_for_deployed_services_ready()
self.enqueue_deployed_charms()
else:
self.ui.status_info_message("Ready")
def all_maas_machines_ready(self):
self.maas_state.invalidate_nodes_cache()
cons = self.config.getopt('constraints')
needed = set([m.instance_id for m in
self.placement_controller.machines_pending()])
ready = set([m.instance_id for m in
self.maas_state.machines(MaasMachineStatus.READY,
constraints=cons)])
allocated = set([m.instance_id for m in
self.maas_state.machines(MaasMachineStatus.ALLOCATED,
constraints=cons)
])
summary = ", ".join(["{} {}".format(v, k) for k, v in
self.maas_state.machines_summary().items()])
self.ui.status_info_message("Waiting for {} maas machines to be ready."
" Machines Summary: {}".format(len(needed),
summary))
if not needed.issubset(ready.union(allocated)):
return False
return True
def add_machines_to_juju_multi(self):
"""Adds each of the machines used for the placement to juju, if it
isn't already there."""
self.juju_state.invalidate_status_cache()
juju_ids = [jm.instance_id for jm in self.juju_state.machines()]
machine_params = []
for maas_machine in self.placement_controller.machines_pending():
if maas_machine.instance_id in juju_ids:
# ignore machines that are already added to juju
continue
cd = dict(tags=[maas_machine.system_id])
mp = dict(Series="", ContainerType="", ParentId="",
Constraints=cd, Jobs=[JujuJobs.HostUnits])
machine_params.append(mp)
if len(machine_params) > 0:
import pprint
log.debug("calling add_machines with params:"
" {}".format(pprint.pformat(machine_params)))
rv = self.juju.add_machines(machine_params)
log.debug("add_machines returned '{}'".format(rv))
def all_juju_machines_started(self):
self.juju_state.invalidate_status_cache()
n_needed = len(self.placement_controller.machines_pending())
n_allocated = len([jm for jm in self.juju_state.machines()
if jm.agent_state == 'started'])
return n_allocated >= n_needed
def add_machines_to_juju_single(self):
self.juju_state.invalidate_status_cache()
self.juju_m_idmap = {}
for jm in self.juju_state.machines():
response = self.juju.get_annotations(jm.machine_id,
'machine')
ann = response['Annotations']
if 'instance_id' in ann:
self.juju_m_idmap[ann['instance_id']] = jm.machine_id
log.debug("existing juju machines: {}".format(self.juju_m_idmap))
def get_created_machine_id(iid, response):
d = response['Machines'][0]
if d['Error']:
raise Exception("Error adding machine '{}':"
"{}".format(iid, response))
else:
return d['Machine']
for machine in self.placement_controller.machines_pending():
if machine.instance_id in self.juju_m_idmap:
machine.machine_id = self.juju_m_idmap[machine.instance_id]
log.debug("machine instance_id {} already exists as #{}, "
"skipping".format(machine.instance_id,
machine.machine_id))
continue
log.debug("adding machine with "
"constraints={}".format(machine.constraints))
rv = self.juju.add_machine(constraints=machine.constraints)
m_id = get_created_machine_id(machine.instance_id, rv)
machine.machine_id = m_id
rv = self.juju.set_annotations(m_id, 'machine',
{'instance_id':
machine.instance_id})
self.juju_m_idmap[machine.instance_id] = m_id
def run_apt_go_fast(self, machine_id):
utils.remote_cp(machine_id,
src=path.join(self.config.share_path,
"tools/apt-go-fast"),
dst="/tmp/apt-go-fast",
juju_home=self.config.juju_home(use_expansion=True))
utils.remote_run(machine_id,
cmds="sudo sh /tmp/apt-go-fast",
juju_home=self.config.juju_home(use_expansion=True))
def configure_lxc_network(self, machine_id):
# upload our lxc-host-only template and setup bridge
log.info('Copying network specifications to machine')
srcpath = path.join(self.config.tmpl_path, 'lxc-host-only')
destpath = "/tmp/lxc-host-only"
utils.remote_cp(machine_id, src=srcpath, dst=destpath,
juju_home=self.config.juju_home(use_expansion=True))
log.debug('Updating network configuration for machine')
utils.remote_run(machine_id,
cmds="sudo chmod +x /tmp/lxc-host-only",
juju_home=self.config.juju_home(use_expansion=True))
utils.remote_run(machine_id,
cmds="sudo /tmp/lxc-host-only",
juju_home=self.config.juju_home(use_expansion=True))
def deploy_using_placement(self):
"""Deploy charms using machine placement from placement controller,
waiting for any deferred charms. Then enqueue all charms for
further processing and return.
"""
self.ui.status_info_message("Verifying service deployments")
assigned_ccs = self.placement_controller.assigned_charm_classes()
charm_classes = sorted(assigned_ccs,
key=attrgetter('deploy_priority'))
def undeployed_charm_classes():
return [c for c in charm_classes
if c not in self.deployed_charm_classes]
def update_pending_display():
pending_names = [c.display_name for c in
undeployed_charm_classes()]
self.ui.set_pending_deploys(pending_names)
while len(undeployed_charm_classes()) > 0:
update_pending_display()
for charm_class in undeployed_charm_classes():
self.ui.status_info_message(
"Checking if {c} is deployed".format(
c=charm_class.display_name))
service_names = [s.service_name for s in
self.juju_state.services]
if charm_class.charm_name in service_names:
self.ui.status_info_message(
"{c} is already deployed, skipping".format(
c=charm_class.display_name))
self.deployed_charm_classes.append(charm_class)
continue
err = self.try_deploy(charm_class)
name = charm_class.display_name
if err:
log.debug(
"{} is waiting for another service, will"
" re-try in a few seconds".format(name))
break
else:
log.debug("Issued deploy for {}".format(name))
self.deployed_charm_classes.append(charm_class)
self.juju_state.invalidate_status_cache()
update_pending_display()
num_remaining = len(undeployed_charm_classes())
if num_remaining > 0:
log.debug("{} charms pending deploy.".format(num_remaining))
log.debug("deployed_charm_classes={}".format(
PrettyLog(self.deployed_charm_classes)))
async.sleep_until(5)
update_pending_display()
def try_deploy(self, charm_class):
"returns True if deploy is deferred and should be tried again."
charm = charm_class(juju=self.juju,
juju_state=self.juju_state,
ui=self.ui,
config=self.config)
asts = self.placement_controller.get_assignments(charm_class)
errs = []
first_deploy = True
for atype, ml in asts.items():
for machine in ml:
mspec = self.get_machine_spec(machine, atype)
if mspec is None:
errs.append(machine)
continue
if first_deploy:
msg = "Deploying {c}".format(c=charm_class.display_name)
if mspec != '':
msg += " to machine {mspec}".format(mspec=mspec)
self.ui.status_info_message(msg)
deploy_err = charm.deploy(mspec)
if deploy_err:
errs.append(machine)
else:
first_deploy = False
else:
# service already deployed, need to add-unit
msg = ("Adding one unit of "
"{c}".format(c=charm_class.display_name))
if mspec != '':
msg += " to machine {mspec}".format(mspec=mspec)
self.ui.status_info_message(msg)
deploy_err = charm.add_unit(machine_spec=mspec)
if deploy_err:
errs.append(machine)
if not deploy_err:
self.placement_controller.mark_deployed(machine,
charm_class,
atype)
had_err = len(errs) > 0
if had_err and not self.config.getopt('headless'):
log.warning("deferred deploying to these machines: {}".format(
errs))
return had_err
def get_machine_spec(self, maas_machine, atype):
"""Given a machine and assignment type, return a juju machine spec.
Returns None on errors, and '' for the subordinate char placeholder.
"""
if self.placement_controller.is_placeholder(maas_machine.instance_id):
# placeholder machines do not use a machine spec
return ""
jm = next((m for m in self.juju_state.machines()
if (m.instance_id == maas_machine.instance_id or
m.machine_id == maas_machine.machine_id)), None)
if jm is None:
log.error("could not find juju machine matching {}"
" (instance id {})".format(maas_machine,
maas_machine.instance_id))
return None
if atype == AssignmentType.BareMetal \
or atype == AssignmentType.DEFAULT:
return jm.machine_id
elif atype == AssignmentType.LXC:
return "lxc:{}".format(jm.machine_id)
elif atype == AssignmentType.KVM:
return "kvm:{}".format(jm.machine_id)
else:
log.error("unexpected atype: {}".format(atype))
return None
def wait_for_deployed_services_ready(self):
""" Blocks until all deployed services attached units
are in a 'started' state
"""
if not self.juju_state:
return
self.ui.status_info_message(
"Waiting for deployed services to be in a ready state.")
not_ready_len = 0
while not self.juju_state.all_agents_started():
not_ready = [(a, b) for a, b in self.juju_state.get_agent_states()
if b != 'started']
if len(not_ready) == not_ready_len:
async.sleep_until(3)
continue
not_ready_len = len(not_ready)
log.info("Checking availability of {} ".format(
", ".join(["{}:{}".format(a, b) for a, b in not_ready])))
async.sleep_until(3)
self.config.setopt('deploy_complete', True)
self.ui.status_info_message(
"Processing relations and finalizing services")
def enqueue_deployed_charms(self):
"""Send all deployed charms to CharmQueue for relation setting and
post-proc.
"""
charm_q = CharmQueue(ui=self.ui, config=self.config,
juju=self.juju, juju_state=self.juju_state,
deployed_charms=self.deployed_charm_classes)
if self.config.getopt('headless'):
charm_q.watch_relations()
charm_q.watch_post_proc()
else:
async.submit(charm_q.watch_relations,
self.ui.show_exception_message)
async.submit(charm_q.watch_post_proc,
self.ui.show_exception_message)
charm_q.is_running = True
# Exit cleanly if we've finished all deploys, relations,
# post processing, and running in headless mode.
if self.config.getopt('headless'):
while not self.config.getopt('postproc_complete'):
self.ui.status_info_message(
"Waiting for services to be started.")
# FIXME: Is this needed?
# time.sleep(10)
self.ui.status_info_message(
"All services deployed, relations set, and started")
self.loop.exit(0)
self.ui.status_info_message(
"Services deployed, relationships still pending."
" Please wait for all relations to be set before"
" deploying additional services.")
self.ui.render_services_view(self.nodes, self.juju_state,
self.maas_state, self.config)
self.loop.redraw_screen()
def deploy_new_services(self):
"""Deploys newly added services in background thread.
Does not attempt to create new machines.
"""
self.config.setopt('current_state', ControllerState.SERVICES.value)
self.ui.render_services_view(self.nodes, self.juju_state,
self.maas_state, self.config)
self.loop.redraw_screen()
self.deploy_using_placement()
self.wait_for_deployed_services_ready()
self.enqueue_deployed_charms()
def cancel_add_services(self):
"""User cancelled add-services screen.
Just redisplay services view.
"""
self.config.setopt('current_state',
ControllerState.SERVICES.value)
self.ui.render_services_view(self.nodes, self.juju_state,
self.maas_state, self.config)
self.loop.redraw_screen()
def start(self):
""" Starts UI loop
"""
if self.config.getopt('headless'):
self.initialize()
else:
self.ui.status_info_message("Welcome")
rel = self.config.getopt('openstack_release')
label = OPENSTACK_RELEASE_LABELS[rel]
self.ui.set_openstack_rel(label)
self.initialize()
self.loop.register_callback('refresh_display', self.update)
AlarmMonitor.add_alarm(self.loop.set_alarm_in(0, self.update),
"controller-start")
self.config.setopt("gui_started", True)
self.loop.run()
self.loop.close()
class DisplayController:
""" Controller for displaying juju and maas state."""
def __init__(self, ui=None, opts=None):
self.ui = ui
self.opts = opts
self.config = Config()
self.juju_state = None
self.juju = None
self.maas = None
self.maas_state = None
self.nodes = None
self.placement_controller = None
self.current_state = ControllerState.INSTALL_WAIT
def authenticate_juju(self):
if not len(self.config.juju_env['state-servers']) > 0:
state_server = 'localhost:17070'
else:
state_server = self.config.juju_env['state-servers'][0]
self.juju = JujuClient(
url=path.join('wss://', state_server),
password=self.config.juju_api_password)
self.juju.login()
self.juju_state = JujuState(self.juju)
log.debug('Authenticated against juju api.')
def initialize(self):
"""Authenticates against juju/maas and sets up placement controller."""
if getenv("FAKE_API_DATA"):
self.juju_state = FakeJujuState()
self.maas_state = FakeMaasState()
else:
self.authenticate_juju()
if self.config.is_multi:
creds = self.config.maas_creds
self.maas, self.maas_state = connect_to_maas(creds)
self.placement_controller = PlacementController(
self.maas_state, self.opts)
if path.exists(self.config.placements_filename):
with open(self.config.placements_filename, 'r') as pf:
self.placement_controller.load(pf)
self.info_message("Loaded placements from file.")
else:
if self.config.is_multi:
def_assignments = self.placement_controller.gen_defaults()
else:
def_assignments = self.placement_controller.gen_single()
self.placement_controller.set_all_assignments(def_assignments)
pfn = self.config.placements_filename
self.placement_controller.set_autosave_filename(pfn)
self.placement_controller.do_autosave()
if self.config.is_single:
self.begin_deployment_async()
return
if self.opts.edit_placement or \
not self.placement_controller.can_deploy():
self.current_state = ControllerState.PLACEMENT
else:
self.begin_deployment_async()
def begin_deployment_async(self):
"""To be overridden in subclasses."""
pass
def begin_deployment(self):
"""To be overridden in subclasses."""
pass
# overlays
def step_info(self, message):
with dialog_context(self):
self.ui.show_step_info(message)
def show_password_input(self, title, cb):
with dialog_context(self):
self.ui.show_password_input(title, cb)
def show_maas_input(self, title, cb):
with dialog_context(self):
self.ui.show_maas_input(title, cb)
def show_landscape_input(self, title, cb):
with dialog_context(self):
self.ui.show_landscape_input(title, cb)
def show_selector_info(self, title, opts, cb):
with dialog_context(self):
self.ui.show_selector_info(title, opts, cb)
def show_selector_with_desc(self, title, install_types, cb):
with dialog_context(self):
self.ui.show_selector_with_desc(title, install_types, cb)
def show_dhcp_range(self, range_low, range_high, title, cb):
with dialog_context(self):
self.ui.show_dhcp_range(range_low, range_high, title, cb)
def show_exception_message(self, ex):
def handle_done(*args, **kwargs):
raise urwid.ExitMainLoop()
with dialog_context(self):
logpath = path.join(self.config.cfg_path,
"commands.log")
msg = ("A fatal error has occurred: {}\n"
"See {} for further info.".format(ex.args[0],
logpath))
self.ui.show_fatal_error_message(msg, handle_done)
# - Body
def flash(self, text):
with view_context(self):
self.ui.flash(text)
def flash_reset(self):
with view_context(self):
self.ui.flash_reset()
# - Footer
def clear_status(self):
self.ui.clear_status()
def info_message(self, message):
with status_context(self, 'info', message):
self.ui.status_info_message(
"{}\N{HORIZONTAL ELLIPSIS}".format(message))
def error_message(self, message):
with status_context(self, 'error', message):
self.ui.status_error_message(message)
def set_dashboard_url(self, ip, user, password):
with status_context(self):
self.ui.status_dashboard_url(ip, user, password)
def set_jujugui_url(self, ip):
with status_context(self):
self.ui.status_jujugui_url(ip)
def set_openstack_rel(self, text):
with status_context(self):
self.ui.status_openstack_rel(text)
# - Render
def render_nodes(self, nodes, juju_state, maas_state):
with view_context(self):
self.ui.render_nodes(nodes, juju_state, maas_state)
def render_node_install_wait(self, message="Waiting..."):
with view_context(self):
self.ui.render_node_install_wait(message=message)
def render_placement_view(self):
self.ui.render_placement_view(self,
self.placement_controller)
self.redraw_screen()
def redraw_screen(self):
if hasattr(self, "loop"):
try:
self.loop.draw_screen()
except AssertionError as message:
logging.critical(message)
def exit(self):
urwid.ExitMainLoop()
return sys.exit(0)
def main_loop(self):
if not hasattr(self, 'loop'):
screen = utils.get_hicolor_screen(self.config.STYLES)
self.loop = urwid.MainLoop(self.ui,
handle_mouse=True,
screen=screen,
unhandled_input=self.header_hotkeys)
self.info_message("Welcome")
self.initialize()
self.update()
self.loop.run()
def start(self):
""" Starts controller processing """
self.main_loop()
def update(self, *args, **kwargs):
"""Render UI according to current state and reset timer"""
interval = 1
if self.current_state == ControllerState.PLACEMENT:
self.render_placement_view()
elif self.current_state == ControllerState.INSTALL_WAIT:
self.render_node_install_wait()
interval = self.config.node_install_wait_interval
else:
self.update_node_states()
self.loop.set_alarm_in(interval, self.update)
def update_node_states(self):
""" Updating node states
"""
if not self.juju_state:
return
deployed_services = sorted(self.juju_state.services,
key=attrgetter('service_name'))
deployed_service_names = [s.service_name for s in deployed_services]
charm_classes = sorted([m.__charm_class__ for m in utils.load_charms()
if m.__charm_class__.charm_name in
deployed_service_names],
key=attrgetter('charm_name'))
self.nodes = list(zip(charm_classes, deployed_services))
for n in deployed_services:
for u in n.units:
if u.is_horizon and u.agent_state == "started":
self.set_dashboard_url(
u.public_address, 'ubuntu',
self.config.openstack_password)
if u.is_jujugui and u.agent_state == "started":
self.set_jujugui_url(u.public_address)
if len(self.nodes) == 0:
return
else:
self.render_nodes(self.nodes, self.juju_state, self.maas_state)
def header_hotkeys(self, key):
if key in ['j', 'down']:
self.ui.focus_next()
if key in ['k', 'up']:
self.ui.focus_previous()
if key == 'esc':
self.ui.hide_widget_on_top()
if key in ['h', 'H', '?']:
self.ui.show_help_info()
if key in ['a', 'A', 'f6']:
if self.current_state != ControllerState.SERVICES:
return
charm_modules = utils.load_charms()
charm_classes = [m.__charm_class__ for m in charm_modules
if m.__charm_class__.allow_multi_units and
not m.__charm_class__.disabled]
self.ui.show_add_charm_info(charm_classes, self.add_charm)
if key in ['q', 'Q']:
self.exit()
if key in ['r', 'R', 'f5']:
self.info_message("View was refreshed")
self.update()
import threading
juju_home = os.getenv("JUJU_HOME", "~/.juju")
jenv_pat = os.path.expanduser(os.path.join(juju_home, "environments/*.jenv"))
jenv_files = glob(jenv_pat)
if len(jenv_files) == 0 or len(jenv_files) > 1:
print("found 0 or >1 .jenv files, will ask for IP and password")
wss_ip = input("juju api IP (with port):")
jpass = getpass("juju password : "******"{} starting: {}".format(i, threading.current_thread().name))
if i == 0:
time.sleep(3)
print("*"*80)
print("{} RECONNECT {}\n".format(i, threading.current_thread().name))
j.reconnect()
time.sleep(5)
j.reconnect()
print("*"*80)
print("{} RECONNECT {}\n".format(i, threading.current_thread().name))
class DisplayController:
""" Controller for displaying juju and maas state."""
def __init__(self, ui=None, opts=None):
self.ui = ui
self.opts = opts
self.config = Config()
self.juju_state = None
self.juju = None
self.maas = None
self.maas_state = None
self.nodes = None
self.machine = None
self.node_install_wait_alarm = None
def authenticate_juju(self):
if not len(self.config.juju_env['state-servers']) > 0:
state_server = 'localhost:17070'
else:
state_server = self.config.juju_env['state-servers'][0]
self.juju = JujuClient(
url=path.join('wss://', state_server),
password=self.config.juju_api_password)
self.juju.login()
self.juju_state = JujuState(self.juju)
log.debug('Authenticated against juju api.')
def authenticate_maas(self):
auth = MaasAuth()
auth.get_api_key('root')
self.maas = MaasClient(auth)
self.maas_state = MaasState(self.maas)
log.debug('Authenticated against maas api.')
def initialize(self):
""" authenticates against juju/maas and initializes a machine """
self.authenticate_juju()
if self.config.is_multi:
self.authenticate_maas()
# overlays
def step_info(self, message):
self.ui.show_step_info(message)
self.redraw_screen()
# - Footer
def clear_status(self):
self.ui.clear_status()
self.redraw_screen()
def info_message(self, message):
log.info(message)
self.ui.status_info_message(message)
self.redraw_screen()
def error_message(self, message):
log.debug(message)
self.ui.status_error_message(message)
self.redraw_screen()
def set_dashboard_url(self, ip):
self.ui.status_dashboard_url(ip)
self.redraw_screen()
def set_jujugui_url(self, ip):
self.ui.status_jujugui_url(ip)
self.redraw_screen()
# - Render
def render_nodes(self, nodes, juju_state, maas_state):
self.ui.render_nodes(nodes, juju_state, maas_state)
self.redraw_screen()
def render_node_install_wait(self, loop=None, user_data=None):
self.ui.render_node_install_wait()
self.redraw_screen()
self.node_install_wait_alarm = self.loop.set_alarm_in(
self.config.node_install_wait_interval,
self.render_node_install_wait)
def stop_rendering(self, alarm):
if alarm:
self.loop.remove_alarm(alarm)
alarm = None
def redraw_screen(self):
if hasattr(self, "loop"):
if not self.opts.noui:
try:
self.loop.draw_screen()
except AssertionError as message:
logging.critical(message)
else:
pass
def exit(self):
if not self.opts.noui:
raise urwid.ExitMainLoop()
else:
raise self.loop.stop()
def main_loop(self):
if not self.opts.noui:
if not hasattr(self, 'loop'):
self.loop = urwid.MainLoop(self.ui,
self.config.STYLES,
handle_mouse=True,
unhandled_input=self.header_hotkeys)
self.info_message("Welcome ..")
self.initialize()
self.render_node_install_wait()
self.update_alarm()
self.loop.run()
else:
log.debug("Running asyncio event loop for ConsoleUI")
self.loop = asyncio.get_event_loop()
self.initialize()
self.loop.run_forever()
def start(self):
""" Starts controller processing """
self.main_loop()
def update_alarm(self, *args, **kwargs):
# Do update here.
self.update_node_states()
self.loop.set_alarm_in(1, self.update_alarm)
def update_node_states(self):
""" Updating node states
"""
if not self.juju_state:
return
deployed_services = sorted(self.juju_state.services,
key=attrgetter('service_name'))
deployed_service_names = [s.service_name for s in deployed_services]
charm_classes = sorted([m.__charm_class__ for m in utils.load_charms()
if m.__charm_class__.charm_name in
deployed_service_names],
key=attrgetter('charm_name'))
self.nodes = list(zip(charm_classes, deployed_services))
for n in deployed_services:
for u in n.units:
if u.is_horizon and u.agent_state == "started":
self.set_dashboard_url(u.public_address)
if u.is_jujugui and u.agent_state == "started":
self.set_jujugui_url(u.public_address)
if len(self.nodes) == 0:
return
else:
self.stop_rendering(self.node_install_wait_alarm)
self.render_nodes(self.nodes, self.juju_state, self.maas_state)
def header_hotkeys(self, key):
if key in ['j', 'down']:
self.ui.focus_next()
if key in ['k', 'up']:
self.ui.focus_previous()
if key == 'esc':
self.ui.hide_widget_on_top()
if key in ['h', 'H', '?']:
self.ui.show_help_info()
if key in ['a', 'A', 'f6']:
charm_modules = utils.load_charms()
charm_classes = [m.__charm_class__ for m in charm_modules
if m.__charm_class__.allow_multi_units and
not m.__charm_class__.disabled]
self.ui.show_add_charm_info(charm_classes, self.add_charm)
if key in ['q', 'Q']:
self.exit()
if key in ['r', 'R', 'f5']:
self.info_message("View was refreshed.")
self.render_nodes(self.nodes, self.juju_state, self.maas_state)
class Controller:
""" Controller for Juju deployments and Maas machine init """
def __init__(self, ui, config, loop):
self.ui = ui
self.ui.controller = self
self.config = config
self.loop = loop
self.juju_state = None
self.juju = None
self.maas = None
self.maas_state = None
self.nodes = []
self.juju_m_idmap = None # for single, {instance_id: machine id}
self.deployed_charm_classes = []
self.placement_controller = None
if not self.config.getopt("current_state"):
self.config.setopt("current_state", ControllerState.INSTALL_WAIT.value)
def update(self, *args, **kwargs):
"""Render UI according to current state and reset timer
PegasusGUI only.
"""
interval = 1
current_state = self.config.getopt("current_state")
if current_state == ControllerState.PLACEMENT:
self.ui.render_placement_view(self.loop, self.config, self.commit_placement)
elif current_state == ControllerState.INSTALL_WAIT:
if self.ui.node_install_wait_view is None:
self.ui.render_node_install_wait(message="Installer is initializing nodes. Please wait.")
else:
self.ui.node_install_wait_view.redraw_kitt()
interval = self.config.node_install_wait_interval
elif current_state == ControllerState.ADD_SERVICES:
def submit_deploy():
async.submit(self.deploy_new_services, self.ui.show_exception_message)
self.ui.render_add_services_dialog(submit_deploy, self.cancel_add_services)
elif current_state == ControllerState.SERVICES:
self.update_node_states()
else:
raise Exception("Internal error, unexpected display " "state '{}'".format(current_state))
self.loop.redraw_screen()
AlarmMonitor.add_alarm(self.loop.set_alarm_in(interval, self.update), "core-controller-update")
def update_node_states(self):
""" Updating node states
PegasusGUI only
"""
if not self.juju_state:
return
deployed_services = sorted(self.juju_state.services, key=attrgetter("service_name"))
deployed_service_names = [s.service_name for s in deployed_services]
charm_classes = sorted(
[
m.__charm_class__
for m in utils.load_charms(self.config.getopt("charm_plugin_dir"))
if m.__charm_class__.charm_name in deployed_service_names
],
key=attrgetter("charm_name"),
)
self.nodes = list(zip(charm_classes, deployed_services))
if len(self.nodes) == 0:
return
else:
if not self.ui.services_view:
self.ui.render_services_view(self.nodes, self.juju_state, self.maas_state, self.config)
else:
self.ui.refresh_services_view(self.nodes, self.config)
def authenticate_juju(self):
if not len(self.config.juju_env["state-servers"]) > 0:
state_server = "localhost:17070"
else:
state_server = self.config.juju_env["state-servers"][0]
self.juju = JujuClient(url=path.join("wss://", state_server), password=self.config.juju_api_password)
self.juju.login()
self.juju_state = JujuState(self.juju)
log.debug("Authenticated against juju api.")
def initialize(self):
"""Authenticates against juju/maas and sets up placement controller."""
if getenv("FAKE_API_DATA"):
self.juju_state = FakeJujuState()
self.maas_state = FakeMaasState()
else:
self.authenticate_juju()
if self.config.is_multi():
creds = self.config.getopt("maascreds")
self.maas, self.maas_state = connect_to_maas(creds)
self.placement_controller = PlacementController(self.maas_state, self.config)
if path.exists(self.config.placements_filename):
try:
with open(self.config.placements_filename, "r") as pf:
self.placement_controller.load(pf)
except Exception:
log.exception("Exception loading placement")
raise Exception("Could not load " "{}.".format(self.config.placements_filename))
self.ui.status_info_message("Loaded placements from file")
log.info("Loaded placements from " "'{}'".format(self.config.placements_filename))
# If we have no machines (so we are a fresh install) but
# are reading a placements.yaml from a previous install,
# so it has no assignments, only deployments, tell the
# controller to use the deployments in the file as
# assignments:
if len(self.placement_controller.machines_pending()) == 0 and len(self.juju_state.machines()) == 0:
self.placement_controller.set_assignments_from_deployments()
log.info("Using deployments saved from previous install" " as new assignments.")
else:
if self.config.is_multi():
def_assignments = self.placement_controller.gen_defaults()
else:
def_assignments = self.placement_controller.gen_single()
self.placement_controller.set_all_assignments(def_assignments)
pfn = self.config.placements_filename
self.placement_controller.set_autosave_filename(pfn)
self.placement_controller.do_autosave()
if self.config.is_single():
if self.config.getopt("headless"):
self.begin_deployment()
else:
async.submit(self.begin_deployment, self.ui.show_exception_message)
return
if self.config.getopt("edit_placement") or not self.placement_controller.can_deploy():
self.config.setopt("current_state", ControllerState.PLACEMENT.value)
else:
if self.config.getopt("headless"):
self.begin_deployment()
else:
async.submit(self.begin_deployment, self.ui.show_exception_message)
def commit_placement(self):
self.config.setopt("current_state", ControllerState.SERVICES.value)
self.ui.render_services_view(self.nodes, self.juju_state, self.maas_state, self.config)
self.loop.redraw_screen()
if self.config.getopt("headless"):
self.begin_deployment()
else:
async.submit(self.begin_deployment, self.ui.show_exception_message)
def begin_deployment(self):
if self.config.is_multi():
# now all machines are added
self.maas.tag_fpi(self.maas.nodes)
self.maas.nodes_accept_all()
self.maas.tag_name(self.maas.nodes)
while not self.all_maas_machines_ready():
time.sleep(3)
self.add_machines_to_juju_multi()
elif self.config.is_single():
self.add_machines_to_juju_single()
# Quiet out some of the logging
_previous_summary = None
while not self.all_juju_machines_started():
sd = self.juju_state.machines_summary()
summary = ", ".join(["{} {}".format(v, k) for k, v in sd.items()])
if summary != _previous_summary:
self.ui.status_info_message("Waiting for machines to " "start: {}".format(summary))
_previous_summary = summary
async.sleep_until(1)
if len(self.juju_state.machines()) == 0:
raise Exception("Expected some juju machines started.")
self.config.setopt("current_state", ControllerState.SERVICES.value)
ppc = self.config.getopt("postproc_complete")
rc = self.config.getopt("relations_complete")
if not ppc or not rc:
if self.config.is_single():
controller_machine = self.juju_m_idmap["controller"]
self.configure_lxc_network(controller_machine)
for juju_machine_id in self.juju_m_idmap.values():
async.sleep_until(0)
self.run_apt_go_fast(juju_machine_id)
self.deploy_using_placement()
self.wait_for_deployed_services_ready()
self.enqueue_deployed_charms()
else:
self.ui.status_info_message("Ready")
def all_maas_machines_ready(self):
self.maas_state.invalidate_nodes_cache()
cons = self.config.getopt("constraints")
needed = set([m.instance_id for m in self.placement_controller.machines_pending()])
ready = set([m.instance_id for m in self.maas_state.machines(MaasMachineStatus.READY, constraints=cons)])
allocated = set(
[m.instance_id for m in self.maas_state.machines(MaasMachineStatus.ALLOCATED, constraints=cons)]
)
summary = ", ".join(["{} {}".format(v, k) for k, v in self.maas_state.machines_summary().items()])
self.ui.status_info_message(
"Waiting for {} maas machines to be ready." " Machines Summary: {}".format(len(needed), summary)
)
if not needed.issubset(ready.union(allocated)):
return False
return True
def add_machines_to_juju_multi(self):
"""Adds each of the machines used for the placement to juju, if it
isn't already there."""
self.juju_state.invalidate_status_cache()
juju_ids = [jm.instance_id for jm in self.juju_state.machines()]
machine_params = []
for maas_machine in self.placement_controller.machines_pending():
if maas_machine.instance_id in juju_ids:
# ignore machines that are already added to juju
continue
cd = dict(tags=[maas_machine.system_id])
mp = dict(Series="", ContainerType="", ParentId="", Constraints=cd, Jobs=[JujuJobs.HostUnits])
machine_params.append(mp)
if len(machine_params) > 0:
import pprint
log.debug("calling add_machines with params:" " {}".format(pprint.pformat(machine_params)))
rv = self.juju.add_machines(machine_params)
log.debug("add_machines returned '{}'".format(rv))
def all_juju_machines_started(self):
self.juju_state.invalidate_status_cache()
n_needed = len(self.placement_controller.machines_pending())
n_allocated = len([jm for jm in self.juju_state.machines() if jm.agent_state == "started"])
return n_allocated >= n_needed
def add_machines_to_juju_single(self):
self.juju_state.invalidate_status_cache()
self.juju_m_idmap = {}
for jm in self.juju_state.machines():
response = self.juju.get_annotations(jm.machine_id, "machine")
ann = response["Annotations"]
if "instance_id" in ann:
self.juju_m_idmap[ann["instance_id"]] = jm.machine_id
log.debug("existing juju machines: {}".format(self.juju_m_idmap))
def get_created_machine_id(iid, response):
d = response["Machines"][0]
if d["Error"]:
raise Exception("Error adding machine '{}':" "{}".format(iid, response))
else:
return d["Machine"]
for machine in self.placement_controller.machines_pending():
if machine.instance_id in self.juju_m_idmap:
machine.machine_id = self.juju_m_idmap[machine.instance_id]
log.debug(
"machine instance_id {} already exists as #{}, "
"skipping".format(machine.instance_id, machine.machine_id)
)
continue
log.debug("adding machine with " "constraints={}".format(machine.constraints))
rv = self.juju.add_machine(constraints=machine.constraints)
m_id = get_created_machine_id(machine.instance_id, rv)
machine.machine_id = m_id
rv = self.juju.set_annotations(m_id, "machine", {"instance_id": machine.instance_id})
self.juju_m_idmap[machine.instance_id] = m_id
def run_apt_go_fast(self, machine_id):
utils.remote_cp(
machine_id,
src=path.join(self.config.share_path, "tools/apt-go-fast"),
dst="/tmp/apt-go-fast",
juju_home=self.config.juju_home(use_expansion=True),
)
utils.remote_run(
machine_id, cmds="sudo sh /tmp/apt-go-fast", juju_home=self.config.juju_home(use_expansion=True)
)
def configure_lxc_network(self, machine_id):
# upload our lxc-host-only template and setup bridge
log.info("Copying network specifications to machine")
srcpath = path.join(self.config.tmpl_path, "lxc-host-only")
destpath = "/tmp/lxc-host-only"
utils.remote_cp(machine_id, src=srcpath, dst=destpath, juju_home=self.config.juju_home(use_expansion=True))
log.debug("Updating network configuration for machine")
utils.remote_run(
machine_id, cmds="sudo chmod +x /tmp/lxc-host-only", juju_home=self.config.juju_home(use_expansion=True)
)
utils.remote_run(
machine_id, cmds="sudo /tmp/lxc-host-only", juju_home=self.config.juju_home(use_expansion=True)
)
def deploy_using_placement(self):
"""Deploy charms using machine placement from placement controller,
waiting for any deferred charms. Then enqueue all charms for
further processing and return.
"""
self.ui.status_info_message("Verifying service deployments")
assigned_ccs = self.placement_controller.assigned_charm_classes()
charm_classes = sorted(assigned_ccs, key=attrgetter("deploy_priority"))
def undeployed_charm_classes():
return [c for c in charm_classes if c not in self.deployed_charm_classes]
def update_pending_display():
pending_names = [c.display_name for c in undeployed_charm_classes()]
self.ui.set_pending_deploys(pending_names)
while len(undeployed_charm_classes()) > 0:
update_pending_display()
for charm_class in undeployed_charm_classes():
self.ui.status_info_message("Checking if {c} is deployed".format(c=charm_class.display_name))
service_names = [s.service_name for s in self.juju_state.services]
if charm_class.charm_name in service_names:
self.ui.status_info_message("{c} is already deployed, skipping".format(c=charm_class.display_name))
self.deployed_charm_classes.append(charm_class)
continue
err = self.try_deploy(charm_class)
name = charm_class.display_name
if err:
log.debug("{} is waiting for another service, will" " re-try in a few seconds".format(name))
break
else:
log.debug("Issued deploy for {}".format(name))
self.deployed_charm_classes.append(charm_class)
self.juju_state.invalidate_status_cache()
update_pending_display()
num_remaining = len(undeployed_charm_classes())
if num_remaining > 0:
log.debug("{} charms pending deploy.".format(num_remaining))
log.debug("deployed_charm_classes={}".format(PrettyLog(self.deployed_charm_classes)))
async.sleep_until(5)
update_pending_display()
def try_deploy(self, charm_class):
"returns True if deploy is deferred and should be tried again."
charm = charm_class(juju=self.juju, juju_state=self.juju_state, ui=self.ui, config=self.config)
asts = self.placement_controller.get_assignments(charm_class)
errs = []
first_deploy = True
for atype, ml in asts.items():
for machine in ml:
mspec = self.get_machine_spec(machine, atype)
if mspec is None:
errs.append(machine)
continue
if first_deploy:
msg = "Deploying {c}".format(c=charm_class.display_name)
if mspec != "":
msg += " to machine {mspec}".format(mspec=mspec)
self.ui.status_info_message(msg)
deploy_err = charm.deploy(mspec)
if deploy_err:
errs.append(machine)
else:
first_deploy = False
else:
# service already deployed, need to add-unit
msg = "Adding one unit of " "{c}".format(c=charm_class.display_name)
if mspec != "":
msg += " to machine {mspec}".format(mspec=mspec)
self.ui.status_info_message(msg)
deploy_err = charm.add_unit(machine_spec=mspec)
if deploy_err:
errs.append(machine)
if not deploy_err:
self.placement_controller.mark_deployed(machine, charm_class, atype)
had_err = len(errs) > 0
if had_err and not self.config.getopt("headless"):
log.warning("deferred deploying to these machines: {}".format(errs))
return had_err
def get_machine_spec(self, maas_machine, atype):
"""Given a machine and assignment type, return a juju machine spec.
Returns None on errors, and '' for the subordinate char placeholder.
"""
if self.placement_controller.is_placeholder(maas_machine.instance_id):
# placeholder machines do not use a machine spec
return ""
jm = next(
(
m
for m in self.juju_state.machines()
if (m.instance_id == maas_machine.instance_id or m.machine_id == maas_machine.machine_id)
),
None,
)
if jm is None:
log.error(
"could not find juju machine matching {}"
" (instance id {})".format(maas_machine, maas_machine.instance_id)
)
return None
if atype == AssignmentType.BareMetal or atype == AssignmentType.DEFAULT:
return jm.machine_id
elif atype == AssignmentType.LXC:
return "lxc:{}".format(jm.machine_id)
elif atype == AssignmentType.KVM:
return "kvm:{}".format(jm.machine_id)
else:
log.error("unexpected atype: {}".format(atype))
return None
def wait_for_deployed_services_ready(self):
""" Blocks until all deployed services attached units
are in a 'started' state
"""
if not self.juju_state:
return
self.ui.status_info_message("Waiting for deployed services to be in a ready state.")
not_ready_len = 0
while not self.juju_state.all_agents_started():
not_ready = [(a, b) for a, b in self.juju_state.get_agent_states() if b != "started"]
if len(not_ready) == not_ready_len:
async.sleep_until(3)
continue
not_ready_len = len(not_ready)
log.info("Checking availability of {} ".format(", ".join(["{}:{}".format(a, b) for a, b in not_ready])))
async.sleep_until(3)
self.config.setopt("deploy_complete", True)
self.ui.status_info_message("Processing relations and finalizing services")
def enqueue_deployed_charms(self):
"""Send all deployed charms to CharmQueue for relation setting and
post-proc.
"""
charm_q = CharmQueue(
ui=self.ui,
config=self.config,
juju=self.juju,
juju_state=self.juju_state,
deployed_charms=self.deployed_charm_classes,
)
if self.config.getopt("headless"):
charm_q.watch_relations()
charm_q.watch_post_proc()
else:
async.submit(charm_q.watch_relations, self.ui.show_exception_message)
async.submit(charm_q.watch_post_proc, self.ui.show_exception_message)
charm_q.is_running = True
# Exit cleanly if we've finished all deploys, relations,
# post processing, and running in headless mode.
if self.config.getopt("headless"):
while not self.config.getopt("postproc_complete"):
self.ui.status_info_message("Waiting for services to be started.")
# FIXME: Is this needed?
# time.sleep(10)
self.ui.status_info_message("All services deployed, relations set, and started")
self.loop.exit(0)
self.ui.status_info_message(
"Services deployed, relationships still pending."
" Please wait for all relations to be set before"
" deploying additional services."
)
self.ui.render_services_view(self.nodes, self.juju_state, self.maas_state, self.config)
self.loop.redraw_screen()
def deploy_new_services(self):
"""Deploys newly added services in background thread.
Does not attempt to create new machines.
"""
self.config.setopt("current_state", ControllerState.SERVICES.value)
self.ui.render_services_view(self.nodes, self.juju_state, self.maas_state, self.config)
self.loop.redraw_screen()
self.deploy_using_placement()
self.wait_for_deployed_services_ready()
self.enqueue_deployed_charms()
def cancel_add_services(self):
"""User cancelled add-services screen.
Just redisplay services view.
"""
self.config.setopt("current_state", ControllerState.SERVICES.value)
self.ui.render_services_view(self.nodes, self.juju_state, self.maas_state, self.config)
self.loop.redraw_screen()
def start(self):
""" Starts UI loop
"""
if self.config.getopt("headless"):
self.initialize()
else:
self.ui.status_info_message("Welcome")
rel = self.config.getopt("openstack_release")
label = OPENSTACK_RELEASE_LABELS[rel]
self.ui.set_openstack_rel(label)
self.initialize()
self.loop.register_callback("refresh_display", self.update)
AlarmMonitor.add_alarm(self.loop.set_alarm_in(0, self.update), "controller-start")
self.config.setopt("gui_started", True)
self.loop.run()
self.loop.close()
import threading
juju_home = os.getenv("JUJU_HOME", "~/.juju")
jenv_pat = os.path.expanduser(os.path.join(juju_home, "environments/*.jenv"))
jenv_files = glob(jenv_pat)
if len(jenv_files) == 0 or len(jenv_files) > 1:
print("found 0 or >1 .jenv files, will ask for IP and password")
wss_ip = input("juju api IP (with port):")
jpass = getpass("juju password : "******"{} starting: {}".format(i, threading.current_thread().name))
if i == 0:
time.sleep(3)
print("*" * 80)
print("{} RECONNECT {}\n".format(i, threading.current_thread().name))
j.reconnect()
time.sleep(5)
j.reconnect()
print("*" * 80)
print("{} RECONNECT {}\n".format(i, threading.current_thread().name))
class DisplayController:
""" Controller for displaying juju and maas state."""
def __init__(self, ui=None, opts=None):
self.ui = ui
self.opts = opts
self.config = Config()
self.juju_state = None
self.juju = None
self.maas = None
self.maas_state = None
self.nodes = None
self.machine = None
self.node_install_wait_alarm = None
def authenticate_juju(self):
if not len(self.config.juju_env['state-servers']) > 0:
state_server = 'localhost:17070'
else:
state_server = self.config.juju_env['state-servers'][0]
self.juju = JujuClient(url=path.join('wss://', state_server),
password=self.config.juju_api_password)
self.juju.login()
self.juju_state = JujuState(self.juju)
log.debug('Authenticated against juju api.')
def authenticate_maas(self):
auth = MaasAuth()
auth.get_api_key('root')
self.maas = MaasClient(auth)
self.maas_state = MaasState(self.maas)
log.debug('Authenticated against maas api.')
def initialize(self):
""" authenticates against juju/maas and initializes a machine """
self.authenticate_juju()
if self.config.is_multi:
self.authenticate_maas()
# overlays
def step_info(self, message):
self.ui.show_step_info(message)
self.redraw_screen()
# - Footer
def clear_status(self):
self.ui.clear_status()
self.redraw_screen()
def info_message(self, message):
log.info(message)
self.ui.status_info_message(message)
self.redraw_screen()
def error_message(self, message):
log.debug(message)
self.ui.status_error_message(message)
self.redraw_screen()
def set_dashboard_url(self, ip):
self.ui.status_dashboard_url(ip)
self.redraw_screen()
def set_jujugui_url(self, ip):
self.ui.status_jujugui_url(ip)
self.redraw_screen()
# - Render
def render_nodes(self, nodes, juju_state, maas_state):
self.ui.render_nodes(nodes, juju_state, maas_state)
self.redraw_screen()
def render_node_install_wait(self, loop=None, user_data=None):
self.ui.render_node_install_wait()
self.redraw_screen()
self.node_install_wait_alarm = self.loop.set_alarm_in(
self.config.node_install_wait_interval,
self.render_node_install_wait)
def stop_rendering(self, alarm):
if alarm:
self.loop.remove_alarm(alarm)
alarm = None
def redraw_screen(self):
if hasattr(self, "loop"):
if not self.opts.noui:
try:
self.loop.draw_screen()
except AssertionError as message:
logging.critical(message)
else:
pass
def exit(self):
if not self.opts.noui:
raise urwid.ExitMainLoop()
else:
raise self.loop.stop()
def main_loop(self):
if not self.opts.noui:
if not hasattr(self, 'loop'):
self.loop = urwid.MainLoop(self.ui,
self.config.STYLES,
handle_mouse=True,
unhandled_input=self.header_hotkeys)
self.info_message("Welcome ..")
self.initialize()
self.render_node_install_wait()
self.update_alarm()
self.loop.run()
else:
log.debug("Running asyncio event loop for ConsoleUI")
self.loop = asyncio.get_event_loop()
self.initialize()
self.loop.run_forever()
def start(self):
""" Starts controller processing """
self.main_loop()
def update_alarm(self, *args, **kwargs):
# Do update here.
self.update_node_states()
self.loop.set_alarm_in(1, self.update_alarm)
def update_node_states(self):
""" Updating node states
"""
if not self.juju_state:
return
deployed_services = sorted(self.juju_state.services,
key=attrgetter('service_name'))
deployed_service_names = [s.service_name for s in deployed_services]
charm_classes = sorted([
m.__charm_class__ for m in utils.load_charms()
if m.__charm_class__.charm_name in deployed_service_names
],
key=attrgetter('charm_name'))
self.nodes = list(zip(charm_classes, deployed_services))
for n in deployed_services:
for u in n.units:
if u.is_horizon and u.agent_state == "started":
self.set_dashboard_url(u.public_address)
if u.is_jujugui and u.agent_state == "started":
self.set_jujugui_url(u.public_address)
if len(self.nodes) == 0:
return
else:
self.stop_rendering(self.node_install_wait_alarm)
self.render_nodes(self.nodes, self.juju_state, self.maas_state)
def header_hotkeys(self, key):
if key in ['j', 'down']:
self.ui.focus_next()
if key in ['k', 'up']:
self.ui.focus_previous()
if key == 'esc':
self.ui.hide_widget_on_top()
if key in ['h', 'H', '?']:
self.ui.show_help_info()
if key in ['a', 'A', 'f6']:
charm_modules = utils.load_charms()
charm_classes = [
m.__charm_class__ for m in charm_modules
if m.__charm_class__.allow_multi_units
and not m.__charm_class__.disabled
]
self.ui.show_add_charm_info(charm_classes, self.add_charm)
if key in ['q', 'Q']:
self.exit()
if key in ['r', 'R', 'f5']:
self.info_message("View was refreshed.")
self.render_nodes(self.nodes, self.juju_state, self.maas_state)
