This is the new *CloudFormation Template Reference Guide*. Please update your bookmarks and links. For help getting started with CloudFormation, see the [AWS CloudFormation User Guide](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/Welcome.html).

# AWS::Logs::Transformer ParseCloudfront
<a name="aws-properties-logs-transformer-parsecloudfront"></a>

This processor parses CloudFront vended logs, extract fields, and convert them into JSON format. Encoded field values are decoded. Values that are integers and doubles are treated as such. For more information about this processor including examples, see [ parseCloudfront](https://docs.aws.amazon.com/AmazonCloudWatch/latest/logs/CloudWatch-Logs-Transformation-Processors.html#CloudWatch-Logs-Transformation-parseCloudfront)

For more information about CloudFront log format, see [ Configure and use standard logs (access logs)](https://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/AccessLogs.html).

If you use this processor, it must be the first processor in your transformer.

## Syntax
<a name="aws-properties-logs-transformer-parsecloudfront-syntax"></a>

To declare this entity in your CloudFormation template, use the following syntax:

### JSON
<a name="aws-properties-logs-transformer-parsecloudfront-syntax.json"></a>

```
{
  "[Source](#cfn-logs-transformer-parsecloudfront-source)" : String
}
```

### YAML
<a name="aws-properties-logs-transformer-parsecloudfront-syntax.yaml"></a>

```
  [Source](#cfn-logs-transformer-parsecloudfront-source): String
```

## Properties
<a name="aws-properties-logs-transformer-parsecloudfront-properties"></a>

`Source`  <a name="cfn-logs-transformer-parsecloudfront-source"></a>
Omit this parameter and the whole log message will be processed by this processor. No other value than `@message` is allowed for `source`.  
*Required*: No  
*Type*: String  
*Pattern*: `^.*[a-zA-Z0-9]+.*$`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)