# FunctionConfigurationProperty

The group-specific configuration settings for a Lambda function.

These settings configure the function's behavior in the Greengrass group. For more information, see [Controlling Execution of Greengrass Lambda Functions by Using Group-Specific Configuration](https://docs.aws.amazon.com/greengrass/v1/developerguide/lambda-group-config.html) in the *Developer Guide* .

In an CloudFormation template, `FunctionConfiguration` is a property of the [`Function`](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-greengrass-functiondefinition-function.html) property type.

- Source: Generated code
- Type last changed: v2.93.0 · 23 Aug 2023

## Example

```ts
// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import { aws_greengrass as greengrass } from 'aws-cdk-lib';

declare const variables: any;
const functionConfigurationProperty: greengrass.CfnFunctionDefinition.FunctionConfigurationProperty = {
  encodingType: 'encodingType',
  environment: {
    accessSysfs: false,
    execution: {
      isolationMode: 'isolationMode',
      runAs: {
        gid: 123,
        uid: 123,
      },
    },
    resourceAccessPolicies: [{
      resourceId: 'resourceId',

      // the properties below are optional
      permission: 'permission',
    }],
    variables: variables,
  },
  execArgs: 'execArgs',
  executable: 'executable',
  memorySize: 123,
  pinned: false,
  timeout: 123,
};
```

## Properties

- `encodingType`: string — The expected encoding type of the input payload for the function.

  Valid values are `json` (default) and `binary` .

- `environment`: [IResolvable](/cdk/api/v2/docs/aws-cdk-lib.IResolvable.html) | [CfnFunctionDefinition.EnvironmentProperty](/cdk/api/v2/docs/aws-cdk-lib.aws_greengrass.CfnFunctionDefinition.EnvironmentProperty.html) — The environment configuration of the function.

- `execArgs`: string — The execution arguments.

- `executable`: string — The name of the function executable.

- `memorySize`: number — The memory size (in KB) required by the function.

  > This property applies only to Lambda functions that run in a Greengrass container.

- `pinned`: boolean | [IResolvable](/cdk/api/v2/docs/aws-cdk-lib.IResolvable.html) — Indicates whether the function is pinned (or *long-lived* ).

  Pinned functions start when the core starts and process all requests in the same container. The default value is false.

- `timeout`: number — The allowed execution time (in seconds) after which the function should terminate.

  For pinned functions, this timeout applies for each request.