func (c *DebugHooksCommand) validateHooks(unit *state.Unit) error {
if len(c.hooks) == 0 {
return nil
}
service, err := unit.Service()
if err != nil {
return err
}
eps, err := service.Endpoints()
if err != nil {
return err
}
validHooks := make(map[string]bool)
for _, hook := range hooks.UnitHooks() {
validHooks[string(hook)] = true
}
for _, ep := range eps {
for _, hook := range hooks.RelationHooks() {
hook := fmt.Sprintf("%s-%s", ep.Relation.Name, hook)
validHooks[hook] = true
}
}
for _, hook := range c.hooks {
if !validHooks[hook] {
return fmt.Errorf("unit %q does not contain hook %q", unit.Name(), hook)
}
}
return nil
}
// startUnit creates a new data value for tracking details of the
// unit and starts watching the unit for port changes. The provided
// machineId must be the id for the machine the unit was last observed
// to be assigned to.
func (fw *Firewaller) startUnit(unit *state.Unit, machineId string) error {
service, err := unit.Service()
if err != nil {
return err
}
serviceName := service.Name()
unitName := unit.Name()
unitd := &unitData{
fw: fw,
unit: unit,
ports: unit.OpenedPorts(),
}
fw.unitds[unitName] = unitd
unitd.machined = fw.machineds[machineId]
unitd.machined.unitds[unitName] = unitd
if fw.serviceds[serviceName] == nil {
err := fw.startService(service)
if err != nil {
delete(fw.unitds, unitName)
return err
}
}
unitd.serviced = fw.serviceds[serviceName]
unitd.serviced.unitds[unitName] = unitd
ports := make([]instance.Port, len(unitd.ports))
copy(ports, unitd.ports)
go unitd.watchLoop(ports)
return nil
}
// remove will remove the supplied unit from state. It will panic if it
// observes inconsistent internal state.
func (d *Deployer) remove(unit *state.Unit) error {
if d.deployed[unit.Name()] {
panic("must not remove a deployed unit")
} else if unit.Life() == state.Alive {
panic("must not remove an Alive unit")
}
log.Printf("worker/deployer: removing unit %q", unit)
if err := unit.EnsureDead(); err != nil {
return err
}
service, err := unit.Service()
if err != nil {
return err
}
return service.RemoveUnit(unit)
}