vcsim: add AlarmManager

Closes #3489
Closes #2476

govc/object/save.go

@@ -155,12 +155,26 @@ func saveHostSystem(ctx context.Context, c *vim25.Client, ref types.ManagedObjec
 	return []saveMethod{{"QueryTpmAttestationReport", res}}, nil
 }
 
+func saveAlarmManager(ctx context.Context, c *vim25.Client, ref types.ManagedObjectReference) ([]saveMethod, error) {
+	res, err := methods.GetAlarm(ctx, c, &types.GetAlarm{This: ref})
+	if err != nil {
+		return nil, err
+	}
+	pc := property.DefaultCollector(c)
+	var content []types.ObjectContent
+	if err = pc.Retrieve(ctx, res.Returnval, nil, &content); err != nil {
+		return nil, err
+	}
+	return []saveMethod{{"GetAlarm", res}, {"", content}}, nil
+}
+
 // saveObjects maps object types to functions that can save data that isn't available via the PropertyCollector
 var saveObjects = map[string]func(context.Context, *vim25.Client, types.ManagedObjectReference) ([]saveMethod, error){
 	"VmwareDistributedVirtualSwitch": saveDVS,
 	"EnvironmentBrowser":             saveEnvironmentBrowser,
 	"HostNetworkSystem":              saveHostNetworkSystem,
 	"HostSystem":                     saveHostSystem,
+	"AlarmManager":                   saveAlarmManager,
 }
 
 func isNotConnected(err error) bool {
@@ -204,6 +218,13 @@ func (cmd *save) save(content []types.ObjectContent) error {
 				return err
 			}
 			for _, obj := range objs {
+				if obj.Name == "" {
+					err = cmd.save(obj.Data.([]types.ObjectContent))
+					if err != nil {
+						return err
+					}
+					continue
+				}
 				err = cmd.write(filepath.Join(ref, obj.Name), obj.Data)
 				if err != nil {
 					return err

govc/test/alarms.bats

@@ -0,0 +1,127 @@
+#!/usr/bin/env bats
+
+load test_helper
+
+@test "alarms" {
+  vcsim_env
+
+  run govc alarms
+  assert_success
+
+  run govc alarms -d
+  assert_success
+
+  vm=/DC0/vm/DC0_H0_VM0
+
+  run govc alarms $vm
+  assert_success
+
+  run govc object.collect -s $vm triggeredAlarmState
+  assert_success "" # empty
+
+  run env GOVC_SHOW_UNRELEASED=true govc event.post -s info -i vcsim.vm.success $vm
+  assert_success
+
+  run govc alarms $vm
+  assert_success
+  [ ${#lines[@]} -eq 1 ] # header only, no alarm triggered
+
+  run env GOVC_SHOW_UNRELEASED=true govc event.post -s warning -i vcsim.vm.failure $vm
+  assert_success
+
+  run govc alarms $vm
+  assert_success
+  assert_matches "Warning"
+
+  run govc alarms -l $vm
+  assert_success
+
+  run govc alarms -json $vm
+  assert_success
+  alarms="$output"
+  run jq -r .[].event.eventTypeId <<<"$alarms"
+  assert_success "vcsim.vm.failure"
+
+  run govc object.collect -json -s $vm triggeredAlarmState
+  assert_success
+  state="$output"
+  run jq -r .[].overallStatus <<<"$state"
+  assert_success "yellow"
+  run jq -r .[].acknowledged <<<"$state"
+  assert_success "false"
+
+  run govc alarms -ack
+  assert_success
+
+  run govc object.collect -json -s $vm triggeredAlarmState
+  assert_success
+  state="$output"
+  run jq -r .[].overallStatus <<<"$state"
+  assert_success "yellow"
+  run jq -r .[].acknowledged <<<"$state"
+  assert_success "true"
+
+  run env GOVC_SHOW_UNRELEASED=true govc event.post -s info -i vcsim.vm.success $vm
+  assert_success
+
+  run govc object.collect -s $vm triggeredAlarmState
+  assert_success "" # empty
+
+  run govc object.collect -s / triggeredAlarmState
+  assert_success "" # empty
+}
+
+@test "alarm.info" {
+  vcsim_env
+
+  run govc alarm.info
+  assert_success
+
+  run govc alarm.info -n alarm.VmErrorAlarm
+  assert_success
+  assert_matches "Virtual machine error"
+
+  run govc alarm.info -n invalid
+  assert_success ""
+}
+
+@test "alarm -esx" {
+  vcsim_env -esx
+
+  run govc object.collect -s - content.alarmManager
+  assert_success "" # empty, no AlarmManager
+
+  run govc alarm.info
+  assert_failure # not supported
+}
+
+@test "alarm.create" {
+  vcsim_env
+
+  export GOVC_SHOW_UNRELEASED=true
+
+  run govc alarm.create -n "My Alarm" -green my.alarm.success -yellow my.alarm.failure
+  assert_success
+  id="$output"
+
+  self=$(govc alarm.info -json -n "My Alarm" | jq -r .[].self.value)
+  assert_equal "$id" "$self"
+
+  run govc alarm.info -n "My Alarm"
+  assert_success
+
+  run govc alarm.create -n "My Alarm"
+  assert_failure # DuplicateName
+
+  run govc alarm.create -n "My Alarm" -r -d "This is my alarm description"
+  assert_success
+
+  run govc alarm.rm "$id"
+  assert_success
+
+  run govc alarm.rm "$id"
+  assert_failure
+
+  run govc alarm.info -n "My Alarm"
+  assert_success ""
+}