# AlarmState

Enumeration indicates state of Alarm used in building Alarm Rule.

- Source: [`aws-cloudwatch/lib/alarm-rule.ts`](https://github.com/aws/aws-cdk/blob/v2.275.0/packages/aws-cdk-lib/aws-cloudwatch/lib/alarm-rule.ts#L9)

## Example

```ts
import * as cloudwatch from 'aws-cdk-lib/aws-cloudwatch';

const metric = new cloudwatch.Metric({
  namespace: 'MyNamespace',
  metricName: 'MyMetric',
  dimensionsMap: { MyDimension: 'MyDimensionValue' },
});
const alarm = new cloudwatch.Alarm(this, 'MyAlarm', {
  metric: metric,
  threshold: 100,
  evaluationPeriods: 3,
  datapointsToAlarm: 2,
});

const topicRule = new iot.TopicRule(this, 'TopicRule', {
  sql: iot.IotSql.fromStringAsVer20160323("SELECT topic(2) as device_id FROM 'device/+/data'"),
  actions: [
    new actions.CloudWatchSetAlarmStateAction(alarm, {
      reason: 'AWS Iot Rule action is triggered',
      alarmStateToSet: cloudwatch.AlarmState.ALARM,
    }),
  ],
});
```

## Members

| Member | Description |
| --- | --- |
| `ALARM` | State indicates resource is in ALARM. |
| `OK` | State indicates resource is not in ALARM. |
| `INSUFFICIENT_DATA` | State indicates there is not enough data to determine is resource is in ALARM. |

## Referenced by

- [`AlarmStatusWidgetProps`](/v2/docs/aws-cdk-lib.aws_cloudwatch.AlarmStatusWidgetProps).states
- [`CloudWatchSetAlarmStateActionProps`](/v2/docs/@aws-cdk_aws-iot-actions-alpha.CloudWatchSetAlarmStateActionProps).alarmStateToSet