forked from juju/juju
/
machine.go
155 lines (142 loc) · 3.91 KB
/
machine.go
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// Copyright 2015 Canonical Ltd.
// Licensed under the AGPLv3, see LICENCE file for details.
package common
import (
"github.com/juju/errors"
"github.com/juju/juju/apiserver/params"
"github.com/juju/juju/instance"
"github.com/juju/juju/state"
"github.com/juju/juju/state/multiwatcher"
"github.com/juju/juju/status"
)
// StateJobs translates a slice of multiwatcher jobs to their equivalents in state.
func StateJobs(jobs []multiwatcher.MachineJob) ([]state.MachineJob, error) {
newJobs := make([]state.MachineJob, len(jobs))
for i, job := range jobs {
newJob, err := machineJobFromParams(job)
if err != nil {
return nil, err
}
newJobs[i] = newJob
}
return newJobs, nil
}
// machineJobFromParams returns the job corresponding to multiwatcher.MachineJob.
func machineJobFromParams(job multiwatcher.MachineJob) (state.MachineJob, error) {
switch job {
case multiwatcher.JobHostUnits:
return state.JobHostUnits, nil
case multiwatcher.JobManageModel:
return state.JobManageModel, nil
default:
return -1, errors.Errorf("invalid machine job %q", job)
}
}
type origStateInterface interface {
Machine(string) (*state.Machine, error)
}
type stateInterface interface {
Machine(string) (Machine, error)
}
type stateShim struct {
origStateInterface
}
func (st *stateShim) Machine(id string) (Machine, error) {
return st.origStateInterface.Machine(id)
}
type Machine interface {
Id() string
InstanceId() (instance.Id, error)
WantsVote() bool
HasVote() bool
Status() (status.StatusInfo, error)
ContainerType() instance.ContainerType
HardwareCharacteristics() (*instance.HardwareCharacteristics, error)
Life() state.Life
ForceDestroy() error
Destroy() error
AgentPresence() (bool, error)
IsManager() bool
}
func DestroyMachines(st origStateInterface, force bool, ids ...string) error {
return destroyMachines(&stateShim{st}, force, ids...)
}
func destroyMachines(st stateInterface, force bool, ids ...string) error {
var errs []error
for _, id := range ids {
machine, err := st.Machine(id)
switch {
case errors.IsNotFound(err):
err = errors.Errorf("machine %s does not exist", id)
case err != nil:
case force:
err = machine.ForceDestroy()
case machine.Life() != state.Alive:
continue
default:
err = machine.Destroy()
}
if err != nil {
errs = append(errs, err)
}
}
return DestroyErr("machines", ids, errs)
}
// ModelMachineInfo returns information about machine hardware for
// alive top level machines (not containers).
func ModelMachineInfo(st ModelManagerBackend) (machineInfo []params.ModelMachineInfo, _ error) {
machines, err := st.AllMachines()
if err != nil {
return nil, errors.Trace(err)
}
for _, m := range machines {
if m.Life() != state.Alive {
continue
}
var status string
statusInfo, err := MachineStatus(m)
if err == nil {
status = string(statusInfo.Status)
} else {
status = err.Error()
}
mInfo := params.ModelMachineInfo{
Id: m.Id(),
HasVote: m.HasVote(),
WantsVote: m.WantsVote(),
Status: status,
}
instId, err := m.InstanceId()
switch {
case err == nil:
mInfo.InstanceId = string(instId)
case errors.IsNotProvisioned(err):
// ok, but no instance ID to get.
default:
return nil, errors.Trace(err)
}
if m.ContainerType() != "" && m.ContainerType() != instance.NONE {
machineInfo = append(machineInfo, mInfo)
continue
}
// Only include cores for physical machines.
hw, err := m.HardwareCharacteristics()
if err != nil && !errors.IsNotFound(err) {
return nil, errors.Trace(err)
}
if hw != nil && hw.String() != "" {
hwParams := ¶ms.MachineHardware{
Cores: hw.CpuCores,
Arch: hw.Arch,
Mem: hw.Mem,
RootDisk: hw.RootDisk,
CpuPower: hw.CpuPower,
Tags: hw.Tags,
AvailabilityZone: hw.AvailabilityZone,
}
mInfo.Hardware = hwParams
}
machineInfo = append(machineInfo, mInfo)
}
return machineInfo, nil
}