// PrivateAddress implements the server side of Client.PrivateAddress.
func (c *Client) PrivateAddress(p params.PrivateAddress) (results params.PrivateAddressResults, err error) {
switch {
case names.IsMachine(p.Target):
machine, err := c.api.state.Machine(p.Target)
if err != nil {
return results, err
}
addr := instance.SelectInternalAddress(machine.Addresses(), false)
if addr == "" {
return results, fmt.Errorf("machine %q has no internal address", machine)
}
return params.PrivateAddressResults{PrivateAddress: addr}, nil
case names.IsUnit(p.Target):
unit, err := c.api.state.Unit(p.Target)
if err != nil {
return results, err
}
addr, ok := unit.PrivateAddress()
if !ok {
return results, fmt.Errorf("unit %q has no internal address", unit)
}
return params.PrivateAddressResults{PrivateAddress: addr}, nil
}
return results, fmt.Errorf("unknown unit or machine %q", p.Target)
}
func (c *RemoveMachineCommand) Init(args []string) error {
if len(args) == 0 {
return fmt.Errorf("no machines specified")
}
for _, id := range args {
if !names.IsMachine(id) {
return fmt.Errorf("invalid machine id %q", id)
}
}
c.MachineIds = args
return nil
}
// Init initializes the command for running.
func (a *MachineAgent) Init(args []string) error {
if !names.IsMachine(a.MachineId) {
return fmt.Errorf("--machine-id option must be set, and expects a non-negative integer")
}
if err := a.AgentConf.CheckArgs(args); err != nil {
return err
}
a.runner = newRunner(isFatal, moreImportant)
a.upgradeComplete = make(chan struct{})
a.workersStarted = make(chan struct{})
return nil
}
// ParsePlacement attempts to parse the specified string and create a
// corresponding Placement structure.
//
// If the placement directive is non-empty and missing a scope,
// ErrPlacementScopeMissing will be returned as well as a Placement
// with an empty Scope field.
func ParsePlacement(directive string) (*Placement, error) {
if directive == "" {
return nil, nil
}
if colon := strings.IndexRune(directive, ':'); colon != -1 {
scope, directive := directive[:colon], directive[colon+1:]
if scope == "" {
return nil, ErrPlacementScopeMissing
}
// Sanity check: machine/container scopes require a machine ID as the value.
if (scope == MachineScope || isContainerType(scope)) && !names.IsMachine(directive) {
return nil, fmt.Errorf("invalid value %q for %q scope: expected machine-id", directive, scope)
}
return &Placement{Scope: scope, Directive: directive}, nil
}
if names.IsMachine(directive) {
return &Placement{Scope: MachineScope, Directive: directive}, nil
}
if isContainerType(directive) {
return &Placement{Scope: directive}, nil
}
return nil, ErrPlacementScopeMissing
}
