# TimestreamAction
<a name="API_TimestreamAction"></a>

The Timestream rule action writes attributes (measures) from an MQTT message into an Amazon Timestream table. For more information, see the [Timestream](https://docs.aws.amazon.com/iot/latest/developerguide/timestream-rule-action.html) topic rule action documentation.

## Contents
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 ** databaseName **   <a name="iot-Type-TimestreamAction-databaseName"></a>
The name of an Amazon Timestream database.  
Type: String  
Required: Yes

 ** dimensions **   <a name="iot-Type-TimestreamAction-dimensions"></a>
Metadata attributes of the time series that are written in each measure record.  
Type: Array of [TimestreamDimension](API_TimestreamDimension.md) objects  
Array Members: Minimum number of 1 item. Maximum number of 128 items.  
Required: Yes

 ** roleArn **   <a name="iot-Type-TimestreamAction-roleArn"></a>
The ARN of the role that grants permission to write to the Amazon Timestream database table.  
Type: String  
Required: Yes

 ** tableName **   <a name="iot-Type-TimestreamAction-tableName"></a>
The name of the database table into which to write the measure records.  
Type: String  
Required: Yes

 ** timestamp **   <a name="iot-Type-TimestreamAction-timestamp"></a>
Specifies an application-defined value to replace the default value assigned to the Timestream record's timestamp in the `time` column.  
You can use this property to specify the value and the precision of the Timestream record's timestamp. You can specify a value from the message payload or a value computed by a substitution template.  
If omitted, the topic rule action assigns the timestamp, in milliseconds, at the time it processed the rule.   
Type: [TimestreamTimestamp](API_TimestreamTimestamp.md) object  
Required: No

## See Also
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For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/iot-2015-05-28/TimestreamAction) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/iot-2015-05-28/TimestreamAction) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/iot-2015-05-28/TimestreamAction)