# ParseJSONProperty

This processor parses log events that are in JSON format.

It can extract JSON key-value pairs and place them
under a destination that you specify.
Additionally, because you must have at least one parse-type processor in a transformer, you can use ParseJSON as that
processor for JSON-format logs, so that you can also apply other processors, such as mutate processors, to these logs.
For more information about this processor including examples, see parseJSON in the CloudWatch Logs User Guide.

- Source: [`aws-logs/lib/transformer.ts`](https://github.com/aws/aws-cdk/blob/v2.274.0/packages/aws-cdk-lib/aws-logs/lib/transformer.ts#L245)
- Type last changed: v2.207.0 · 24 Jul 2025

## Example

```ts
// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import { aws_logs as logs } from 'aws-cdk-lib';
const parseJSONProperty: logs.ParseJSONProperty = {
  destination: 'destination',
  source: 'source',
};
```

## Properties

- `destination`: string — The location to put the parsed key value pair into.

  **Default:** Placed under root of log event

- `source`: string = '@message' — Path to the field in the log event that will be parsed.

  Use dot notation to access child fields.