Golang State.AllMachines方法代碼示例

// DestroyEnvironment destroys all services and non-manager machine
// instances in the specified environment. This function assumes that all
// necessary authentication checks have been done.
func DestroyEnvironment(st *state.State, environTag names.EnvironTag) error {
	var err error
	if environTag != st.EnvironTag() {
		if st, err = st.ForEnviron(environTag); err != nil {
			return errors.Trace(err)
		}
		defer st.Close()
	}

	check := NewBlockChecker(st)
	if err = check.DestroyAllowed(); err != nil {
		return errors.Trace(err)
	}

	env, err := st.Environment()
	if err != nil {
		return errors.Trace(err)
	}

	if err = env.Destroy(); err != nil {
		return errors.Trace(err)
	}

	machines, err := st.AllMachines()
	if err != nil {
		return errors.Trace(err)
	}

	err = sendMetrics(st)
	if err != nil {
		logger.Warningf("failed to send leftover metrics: %v", err)
	}

	// We must destroy instances server-side to support JES (Juju Environment
	// Server), as there's no CLI to fall back on. In that case, we only ever
	// destroy non-state machines; we leave destroying state servers in non-
	// hosted environments to the CLI, as otherwise the API server may get cut
	// off.
	if err := destroyNonManagerMachines(st, machines); err != nil {
		return errors.Trace(err)
	}

	// If this is not the state server environment, remove all documents from
	// state associated with the environment.
	if env.EnvironTag() != env.ServerTag() {
		return errors.Trace(st.RemoveAllEnvironDocs())
	}

	// Return to the caller. If it's the CLI, it will finish up
	// by calling the provider's Destroy method, which will
	// destroy the state servers, any straggler instances, and
	// other provider-specific resources.
	return nil
}

// The provisioner will remove dead machines once their backing instances are
// stopped. For the tests, we remove them directly.
func assertAllMachinesDeadAndRemove(c *gc.C, st *state.State) {
	machines, err := st.AllMachines()
	c.Assert(err, jc.ErrorIsNil)
	for _, m := range machines {
		if m.IsManager() {
			continue
		}
		if _, isContainer := m.ParentId(); isContainer {
			continue
		}
		manual, err := m.IsManual()
		c.Assert(err, jc.ErrorIsNil)
		if manual {
			continue
		}

		c.Assert(m.Life(), gc.Equals, state.Dead)
		c.Assert(m.Remove(), jc.ErrorIsNil)
	}
}

func assertMachineCount(c *gc.C, st *state.State, count int) {
	otherMachines, err := st.AllMachines()
	c.Assert(err, jc.ErrorIsNil)
	c.Assert(otherMachines, gc.HasLen, count)
}

func assertMachineCount(c *gc.C, st *state.State, expect int) {
	ms, err := st.AllMachines()
	c.Assert(err, jc.ErrorIsNil)
	c.Assert(ms, gc.HasLen, expect, gc.Commentf("%v", ms))
}