def build_widgets(self):
def has_services_p(m):
pc = self.placement_controller
n = sum([len(al) for at, al in
pc.assignments_for_machine(m).items()])
return n > 0
clear_machine_func = self.placement_view.do_clear_machine
show_chooser_func = self.placement_view.do_show_service_chooser
self.open_maas_button = AttrMap(Button("Open in Browser",
on_press=self.browse_maas),
'button_secondary',
'button_secondary focus')
bc = self.placement_view.config.juju_env['bootstrap-config']
maasname = "'{}' <{}>".format(bc['name'], bc['maas-server'])
maastitle = "Connected to MAAS {}".format(maasname)
tw = Columns([Text(maastitle),
Padding(self.open_maas_button, align='right',
width=BUTTON_SIZE, right=2)])
self.machines_list = MachinesList(self.placement_controller,
[(has_services_p,
'Clear All Services',
clear_machine_func),
(has_services_p,
'Remove Some Services',
show_chooser_func)],
show_hardware=True,
title_widgets=tw)
self.machines_list.update()
self.machines_list_pile = Pile([self.machines_list,
Divider()])
# placeholders replaced in update() with absolute indexes, so
# if you change this list, check update().
pl = [Text(('subheading', "Machines"), align='center'),
Divider(),
Pile([]), # machines_list
Divider()]
self.main_pile = Pile(pl)
return self.main_pile
def build_widgets(self):
if self.charm_class.allow_multi_units:
machine_string = "machines"
plural_string = "s"
else:
machine_string = "a machine"
plural_string = ""
instructions = Text("Select {} to host {}".format(machine_string, self.charm_class.display_name))
self.service_widget = ServiceWidget(
self.charm_class, self.controller, show_constraints=True, show_placements=True
)
all_actions = [
(AssignmentType.BareMetal, "Add as Bare Metal", self.do_select_baremetal),
(AssignmentType.LXC, "Add as LXC", self.do_select_lxc),
(AssignmentType.KVM, "Add as KVM", self.do_select_kvm),
]
actions = [
(label, func) for atype, label, func in all_actions if atype in self.charm_class.allowed_assignment_types
]
constraints = self.charm_class.constraints
# NOTE: show_assignments=False is a WORKAROUND for #194
self.machines_list = MachinesList(
self.controller, actions, constraints=constraints, show_hardware=True, show_assignments=False
)
self.machines_list.update()
close_button = AttrMap(Button("X", on_press=self.close_pressed), "button_secondary", "button_secondary focus")
p = Pile(
[
GridFlow([close_button], 5, 1, 0, "right"),
instructions,
Divider(),
self.service_widget,
Divider(),
self.machines_list,
]
)
return LineBox(p, title="Select Machine{}".format(plural_string))
class MachineChooser(WidgetWrap):
"""Presents list of machines to assign a service to.
Supports multiple selection if the service does.
"""
def __init__(self, controller, charm_class, parent_widget):
self.controller = controller
self.charm_class = charm_class
self.parent_widget = parent_widget
w = self.build_widgets()
super().__init__(w)
def build_widgets(self):
if self.charm_class.allow_multi_units:
machine_string = "machines"
plural_string = "s"
else:
machine_string = "a machine"
plural_string = ""
instructions = Text("Select {} to host {}".format(machine_string, self.charm_class.display_name))
self.service_widget = ServiceWidget(
self.charm_class, self.controller, show_constraints=True, show_placements=True
)
all_actions = [
(AssignmentType.BareMetal, "Add as Bare Metal", self.do_select_baremetal),
(AssignmentType.LXC, "Add as LXC", self.do_select_lxc),
(AssignmentType.KVM, "Add as KVM", self.do_select_kvm),
]
actions = [
(label, func) for atype, label, func in all_actions if atype in self.charm_class.allowed_assignment_types
]
constraints = self.charm_class.constraints
# NOTE: show_assignments=False is a WORKAROUND for #194
self.machines_list = MachinesList(
self.controller, actions, constraints=constraints, show_hardware=True, show_assignments=False
)
self.machines_list.update()
close_button = AttrMap(Button("X", on_press=self.close_pressed), "button_secondary", "button_secondary focus")
p = Pile(
[
GridFlow([close_button], 5, 1, 0, "right"),
instructions,
Divider(),
self.service_widget,
Divider(),
self.machines_list,
]
)
return LineBox(p, title="Select Machine{}".format(plural_string))
def do_select_baremetal(self, sender, machine):
self.do_select(sender, machine, AssignmentType.BareMetal)
def do_select_lxc(self, sender, machine):
self.do_select(sender, machine, AssignmentType.LXC)
def do_select_kvm(self, sender, machine):
self.do_select(sender, machine, AssignmentType.KVM)
def do_select(self, sender, machine, atype):
self.controller.assign(machine, self.charm_class, atype)
self.machines_list.update()
self.service_widget.update()
self.parent_widget.remove_overlay(self)
def close_pressed(self, sender):
self.parent_widget.remove_overlay(self)
class MachinesColumn(WidgetWrap):
"""Shows machines or a link to MAAS to add more"""
def __init__(self, display_controller, placement_controller,
placement_view):
self.display_controller = display_controller
self.placement_controller = placement_controller
self.placement_view = placement_view
w = self.build_widgets()
super().__init__(w)
self.update()
def selectable(self):
return True
def build_widgets(self):
def has_services_p(m):
pc = self.placement_controller
n = sum([len(al) for at, al in
pc.assignments_for_machine(m).items()])
return n > 0
clear_machine_func = self.placement_view.do_clear_machine
show_chooser_func = self.placement_view.do_show_service_chooser
self.open_maas_button = AttrMap(Button("Open in Browser",
on_press=self.browse_maas),
'button_secondary',
'button_secondary focus')
bc = self.placement_view.config.juju_env['bootstrap-config']
maasname = "'{}' <{}>".format(bc['name'], bc['maas-server'])
maastitle = "Connected to MAAS {}".format(maasname)
tw = Columns([Text(maastitle),
Padding(self.open_maas_button, align='right',
width=BUTTON_SIZE, right=2)])
self.machines_list = MachinesList(self.placement_controller,
[(has_services_p,
'Clear All Services',
clear_machine_func),
(has_services_p,
'Remove Some Services',
show_chooser_func)],
show_hardware=True,
title_widgets=tw)
self.machines_list.update()
self.machines_list_pile = Pile([self.machines_list,
Divider()])
# placeholders replaced in update() with absolute indexes, so
# if you change this list, check update().
pl = [Text(('subheading', "Machines"), align='center'),
Divider(),
Pile([]), # machines_list
Divider()]
self.main_pile = Pile(pl)
return self.main_pile
def update(self):
self.machines_list.update()
bc = self.placement_view.config.juju_env['bootstrap-config']
empty_maas_msg = ("There are no available machines.\n"
"Open {} to add machines to "
"'{}':".format(bc['maas-server'], bc['name']))
self.empty_maas_widgets = Pile([Text([('error_icon',
"\N{WARNING SIGN} "),
empty_maas_msg],
align='center'),
Padding(self.open_maas_button,
align='center',
width=BUTTON_SIZE)])
# 1 machine is the subordinate placeholder:
if len(self.placement_controller.machines()) == 1:
self.main_pile.contents[2] = (self.empty_maas_widgets,
self.main_pile.options())
else:
self.main_pile.contents[2] = (self.machines_list_pile,
self.main_pile.options())
def browse_maas(self, sender):
bc = self.placement_view.config.juju_env['bootstrap-config']
try:
p = Popen(["sensible-browser", bc['maas-server']],
stdout=PIPE, stderr=PIPE)
outs, errs = p.communicate(timeout=5)
except TimeoutExpired:
# went five seconds without an error, so we assume it's
# OK. Don't kill it, just let it go:
return
e = errs.decode('utf-8')
msg = "Error opening '{}' in a browser:\n{}".format(bc['name'], e)
w = InfoDialogWidget(msg, self.placement_view.remove_overlay)
self.placement_view.show_overlay(w)
