# Amazon SNS
<a name="sns-component"></a>

The Amazon SNS component (`aws.greengrass.SNS`) publishes messages to an Amazon Simple Notification Service (Amazon SNS) topic. You can use this component to send events from Greengrass core devices to web servers, email addresses, and other message subscribers. For more information, see [What is Amazon SNS?](https://docs.aws.amazon.com/sns/latest/dg/welcome.html) in the *Amazon Simple Notification Service Developer Guide*.

To publish to an Amazon SNS topic with this component, publish a message to the topic where this component subscribes. By default, this component subscribes to the `sns/message` [local publish/subscribe](ipc-publish-subscribe.md) topic. You can specify other topics, including AWS IoT Core MQTT topics, when you deploy this component.

In your custom component, you might want to implement filtering or formatting logic to process messages from other sources before you publish them to this component. This enables you to centralize your message processing logic on a single component.

**Note**  
This component provides similar functionality to the Amazon SNS connector in AWS IoT Greengrass V1. For more information, see [Amazon SNS connector](https://docs.aws.amazon.com/greengrass/latest/developerguide/sns-connector.html) in the *AWS IoT Greengrass V1 Developer Guide*.

**Topics**
+ [Versions](#sns-component-versions)
+ [Type](#sns-component-type)
+ [Operating system](#sns-component-os-support)
+ [Requirements](#sns-component-requirements)
+ [Dependencies](#sns-component-dependencies)
+ [Configuration](#sns-component-configuration)
+ [Input data](#sns-component-input-data)
+ [Output data](#sns-component-output-data)
+ [Local log file](#sns-component-log-file)
+ [Licenses](#sns-component-licenses)
+ [Changelog](#sns-component-changelog)

## Versions
<a name="sns-component-versions"></a>

This component has the following versions:
+ 2.1.x
+ 2.0.x

## Type
<a name="sns-component-type"></a>

<a name="public-component-type-lambda"></a>This <a name="public-component-type-lambda-phrase"></a>component is a Lambda component (`aws.greengrass.lambda`). The [Greengrass nucleus](greengrass-nucleus-component.md) runs this component's Lambda function using the [Lambda launcher component](lambda-launcher-component.md).

<a name="public-component-type-more-information"></a>For more information, see [Component types](develop-greengrass-components.md#component-types).

## Operating system
<a name="sns-component-os-support"></a>

This component can be installed on Linux core devices only.

## Requirements
<a name="sns-component-requirements"></a>

This component has the following requirements:
+ <a name="core-device-lambda-function-requirements"></a>Your core device must meet the requirements to run Lambda functions. If you want the core device to run containerized Lambda functions, the device must meet the requirements to do so. For more information, see [Lambda function requirements](setting-up.md#greengrass-v2-lambda-requirements).
+ <a name="public-component-python3-requirement"></a>[Python](https://www.python.org/) version 3.7 installed on the core device and added to the PATH environment variable.
+ An Amazon SNS topic. For more information, see [Creating an Amazon SNS topic](https://docs.aws.amazon.com/sns/latest/dg/sns-create-topic.html) in the *Amazon Simple Notification Service Developer Guide*.
+ The [Greengrass device role](device-service-role.md) must allow the `sns:Publish` action, as shown in the following example IAM policy.

------
#### [ JSON ]

****  

  ```
  {
    "Version":"2012-10-17",		 	 	 
    "Statement": [
      {
        "Action": [
          "sns:Publish"
        ],
        "Effect": "Allow",
        "Resource": [
          "arn:aws:sns:us-east-1:123456789012:topic-name"
        ]
      }
    ]
  }
  ```

------

  You can dynamically override the default topic in the input message payload for this component. If your application uses this feature, the IAM policy must include all target topics as resources. You can grant granular or conditional access to resources (for example, by using a wildcard `*` naming scheme).
+ <a name="connector-component-legacy-subscription-router-dependency"></a>To receive output data from this component, you must merge the following configuration update for the [legacy subscription router component](legacy-subscription-router-component.md) (`aws.greengrass.LegacySubscriptionRouter`) when you deploy this component. This configuration specifies the topic where this component publishes responses.

------
#### [ Legacy subscription router v2.1.x ]

  ```
  {
    "subscriptions": {
      "aws-greengrass-sns": {
        "id": "aws-greengrass-sns",
        "source": "component:aws.greengrass.SNS",
        "subject": "sns/message/status",
        "target": "cloud"
      }
    }
  }
  ```

------
#### [ Legacy subscription router v2.0.x ]

  ```
  {
    "subscriptions": {
      "aws-greengrass-sns": {
        "id": "aws-greengrass-sns",
        "source": "arn:aws:lambda:region:aws:function:aws-greengrass-sns:version",
        "subject": "sns/message/status",
        "target": "cloud"
      }
    }
  }
  ```<a name="connector-component-legacy-subscription-router-dependency-replace"></a>
  + Replace *region* with the AWS Region that you use.
  + Replace *version* with the version of the Lambda function that this component runs. To find the Lambda function version, you must view the recipe for the version of this component that you want to deploy. Open this component's details page in the [AWS IoT Greengrass console](https://console.aws.amazon.com//greengrass), and look for the **Lambda function** key-value pair. This key-value pair contains the name and version of the Lambda function.

**Important**  <a name="connector-component-legacy-subscription-router-dependency-note"></a>
You must update the Lambda function version on the legacy subscription router every time you deploy this component. This ensures that you use the correct Lambda function version for the component version that you deploy.

------

  <a name="connector-component-create-deployments"></a>For more information, see [Create deployments](create-deployments.md).
+ The Amazon SNS component is supported to run in a VPC. To deploy this component in a VPC, the following is required.
  + The Amazon SNS component must have connectivity to `sns.region.amazonaws.com` which has the VPC endpoint of `com.amazonaws.us-east-1.sns`.

### Endpoints and ports
<a name="sns-component-endpoints"></a>

This component must be able to perform outbound requests to the following endpoints and ports, in addition to endpoints and ports required for basic operation. For more information, see [Allow device traffic through a proxy or firewall](allow-device-traffic.md).


| Endpoint | Port | Required | Description | 
| --- | --- | --- | --- | 
|  `sns.region.amazonaws.com`  | 443 | Yes |  Publish messages to Amazon SNS.  | 

## Dependencies
<a name="sns-component-dependencies"></a>

When you deploy a component, AWS IoT Greengrass also deploys compatible versions of its dependencies. This means that you must meet the requirements for the component and all of its dependencies to successfully deploy the component. This section lists the dependencies for the [released versions](#sns-component-changelog) of this component and the semantic version constraints that define the component versions for each dependency. You can also view the dependencies for each version of the component in the [AWS IoT Greengrass console](https://console.aws.amazon.com//greengrass). On the component details page, look for the **Dependencies** list.

------
#### [ 2.1.10 ]

The following table lists the dependencies for version 2.1.10 of this component.


| Dependency | Compatible versions | Dependency type | 
| --- | --- | --- | 
| [Greengrass nucleus](greengrass-nucleus-component.md) | >=2.0.0 <2.16.0  | Hard | 
| [Lambda launcher](lambda-launcher-component.md) | ^2.0.0  | Hard | 
| [Lambda runtimes](lambda-runtimes-component.md) | ^2.0.0  | Soft | 
| [Token exchange service](token-exchange-service-component.md) | ^2.0.0  | Hard | 

------
#### [ 2.1.9 ]

The following table lists the dependencies for version 2.1.9 of this component.


| Dependency | Compatible versions | Dependency type | 
| --- | --- | --- | 
| [Greengrass nucleus](greengrass-nucleus-component.md) | >=2.0.0 <2.15.0  | Hard | 
| [Lambda launcher](lambda-launcher-component.md) | ^2.0.0  | Hard | 
| [Lambda runtimes](lambda-runtimes-component.md) | ^2.0.0  | Soft | 
| [Token exchange service](token-exchange-service-component.md) | ^2.0.0  | Hard | 

------
#### [ 2.1.8 ]

The following table lists the dependencies for version 2.1.8 of this component.


| Dependency | Compatible versions | Dependency type | 
| --- | --- | --- | 
| [Greengrass nucleus](greengrass-nucleus-component.md) | >=2.0.0 <2.14.0  | Hard | 
| [Lambda launcher](lambda-launcher-component.md) | ^2.0.0  | Hard | 
| [Lambda runtimes](lambda-runtimes-component.md) | ^2.0.0  | Soft | 
| [Token exchange service](token-exchange-service-component.md) | ^2.0.0  | Hard | 

------
#### [ 2.1.7 ]

The following table lists the dependencies for version 2.1.7 of this component.


| Dependency | Compatible versions | Dependency type | 
| --- | --- | --- | 
| [Greengrass nucleus](greengrass-nucleus-component.md) | >=2.0.0 <2.13.0  | Hard | 
| [Lambda launcher](lambda-launcher-component.md) | ^2.0.0  | Hard | 
| [Lambda runtimes](lambda-runtimes-component.md) | ^2.0.0  | Soft | 
| [Token exchange service](token-exchange-service-component.md) | ^2.0.0  | Hard | 

------
#### [ 2.1.6 ]

The following table lists the dependencies for version 2.1.6 of this component.


| Dependency | Compatible versions | Dependency type | 
| --- | --- | --- | 
| [Greengrass nucleus](greengrass-nucleus-component.md) | >=2.0.0 <2.12.0  | Hard | 
| [Lambda launcher](lambda-launcher-component.md) | ^2.0.0  | Hard | 
| [Lambda runtimes](lambda-runtimes-component.md) | ^2.0.0  | Soft | 
| [Token exchange service](token-exchange-service-component.md) | ^2.0.0  | Hard | 

------
#### [ 2.1.5 ]

The following table lists the dependencies for version 2.1.5 of this component.


| Dependency | Compatible versions | Dependency type | 
| --- | --- | --- | 
| [Greengrass nucleus](greengrass-nucleus-component.md) | >=2.0.0 <2.11.0  | Hard | 
| [Lambda launcher](lambda-launcher-component.md) | ^2.0.0  | Hard | 
| [Lambda runtimes](lambda-runtimes-component.md) | ^2.0.0  | Soft | 
| [Token exchange service](token-exchange-service-component.md) | ^2.0.0  | Hard | 

------
#### [ 2.1.4 ]

The following table lists the dependencies for version 2.1.4 of this component.


| Dependency | Compatible versions | Dependency type | 
| --- | --- | --- | 
| [Greengrass nucleus](greengrass-nucleus-component.md) | >=2.0.0 <2.10.0  | Hard | 
| [Lambda launcher](lambda-launcher-component.md) | ^2.0.0  | Hard | 
| [Lambda runtimes](lambda-runtimes-component.md) | ^2.0.0  | Soft | 
| [Token exchange service](token-exchange-service-component.md) | ^2.0.0  | Hard | 

------
#### [ 2.1.3 ]

The following table lists the dependencies for version 2.1.3 of this component.


| Dependency | Compatible versions | Dependency type | 
| --- | --- | --- | 
| [Greengrass nucleus](greengrass-nucleus-component.md) | >=2.0.0 <2.9.0  | Hard | 
| [Lambda launcher](lambda-launcher-component.md) | ^2.0.0  | Hard | 
| [Lambda runtimes](lambda-runtimes-component.md) | ^2.0.0  | Soft | 
| [Token exchange service](token-exchange-service-component.md) | ^2.0.0  | Hard | 

------
#### [ 2.1.2 ]

The following table lists the dependencies for version 2.1.2 of this component.


| Dependency | Compatible versions | Dependency type | 
| --- | --- | --- | 
| [Greengrass nucleus](greengrass-nucleus-component.md) | >=2.0.0 <2.8.0  | Hard | 
| [Lambda launcher](lambda-launcher-component.md) | ^2.0.0  | Hard | 
| [Lambda runtimes](lambda-runtimes-component.md) | ^2.0.0  | Soft | 
| [Token exchange service](token-exchange-service-component.md) | ^2.0.0  | Hard | 

------
#### [ 2.1.1 ]

The following table lists the dependencies for version 2.1.1 of this component.


| Dependency | Compatible versions | Dependency type | 
| --- | --- | --- | 
| [Greengrass nucleus](greengrass-nucleus-component.md) | >=2.0.0 <2.7.0  | Hard | 
| [Lambda launcher](lambda-launcher-component.md) | ^2.0.0  | Hard | 
| [Lambda runtimes](lambda-runtimes-component.md) | ^2.0.0  | Soft | 
| [Token exchange service](token-exchange-service-component.md) | ^2.0.0  | Hard | 

------
#### [ 2.0.8 - 2.1.0 ]

The following table lists the dependencies for versions 2.0.8 and 2.1.0 of this component.


| Dependency | Compatible versions | Dependency type | 
| --- | --- | --- | 
| [Greengrass nucleus](greengrass-nucleus-component.md) | >=2.0.0 <2.6.0  | Hard | 
| [Lambda launcher](lambda-launcher-component.md) | ^2.0.0  | Hard | 
| [Lambda runtimes](lambda-runtimes-component.md) | ^2.0.0  | Soft | 
| [Token exchange service](token-exchange-service-component.md) | ^2.0.0  | Hard | 

------
#### [ 2.0.7 ]

The following table lists the dependencies for version 2.0.7 of this component.


| Dependency | Compatible versions | Dependency type | 
| --- | --- | --- | 
| [Greengrass nucleus](greengrass-nucleus-component.md) | >=2.0.0 <2.5.0  | Hard | 
| [Lambda launcher](lambda-launcher-component.md) | ^2.0.0  | Hard | 
| [Lambda runtimes](lambda-runtimes-component.md) | ^2.0.0  | Soft | 
| [Token exchange service](token-exchange-service-component.md) | ^2.0.0  | Hard | 

------
#### [ 2.0.6 ]

The following table lists the dependencies for version 2.0.6 of this component.


| Dependency | Compatible versions | Dependency type | 
| --- | --- | --- | 
| [Greengrass nucleus](greengrass-nucleus-component.md) | >=2.0.0 <2.4.0  | Hard | 
| [Lambda launcher](lambda-launcher-component.md) | ^2.0.0  | Hard | 
| [Lambda runtimes](lambda-runtimes-component.md) | ^2.0.0  | Soft | 
| [Token exchange service](token-exchange-service-component.md) | ^2.0.0  | Hard | 

------
#### [ 2.0.5 ]

The following table lists the dependencies for version 2.0.5 of this component.


| Dependency | Compatible versions | Dependency type | 
| --- | --- | --- | 
| [Greengrass nucleus](greengrass-nucleus-component.md) | >=2.0.0 <2.3.0  | Hard | 
| [Lambda launcher](lambda-launcher-component.md) | ^2.0.0  | Hard | 
| [Lambda runtimes](lambda-runtimes-component.md) | ^2.0.0  | Soft | 
| [Token exchange service](token-exchange-service-component.md) | ^2.0.0  | Hard | 

------
#### [ 2.0.4 ]

The following table lists the dependencies for version 2.0.4 of this component.


| Dependency | Compatible versions | Dependency type | 
| --- | --- | --- | 
| [Greengrass nucleus](greengrass-nucleus-component.md) | >=2.0.0 <2.2.0  | Hard | 
| [Lambda launcher](lambda-launcher-component.md) | ^2.0.0  | Hard | 
| [Lambda runtimes](lambda-runtimes-component.md) | ^2.0.0  | Soft | 
| [Token exchange service](token-exchange-service-component.md) | ^2.0.0  | Hard | 

------
#### [ 2.0.3 ]

The following table lists the dependencies for version 2.0.3 of this component.


| Dependency | Compatible versions | Dependency type | 
| --- | --- | --- | 
| [Greengrass nucleus](greengrass-nucleus-component.md) | >=2.0.3 <2.1.0  | Hard | 
| [Lambda launcher](lambda-launcher-component.md) | >=1.0.0  | Hard | 
| [Lambda runtimes](lambda-runtimes-component.md) | >=1.0.0  | Soft | 
| [Token exchange service](token-exchange-service-component.md) | >=1.0.0  | Hard | 

------

For more information about component dependencies, see the [component recipe reference](component-recipe-reference.md#recipe-reference-component-dependencies).

## Configuration
<a name="sns-component-configuration"></a>

This component provides the following configuration parameters that you can customize when you deploy the component.

**Note**  <a name="connector-component-lambda-parameters"></a>
This component's default configuration includes Lambda function parameters. We recommend that you edit only the following parameters to configure this component on your devices.

`lambdaParams`  
An object that contains the parameters for this component's Lambda function. This object contains the following information:    
`EnvironmentVariables`  
An object that contains the Lambda function's parameters. This object contains the following information:    
`DEFAULT_SNS_ARN`  
The ARN of the default Amazon SNS topic where this component publishes messages. You can override the destination topic with the `sns_topic_arn` property in the input message payload.

`containerMode`  <a name="connector-component-container-mode-parameter"></a>
(Optional) The containerization mode for this component. Choose from the following options:  <a name="lambda-function-component-container-mode-parameter"></a>
+ `NoContainer` – The component doesn't run in an isolated runtime environment.
+ `GreengrassContainer` – The component runs in an isolated runtime environment inside the AWS IoT Greengrass container.
Default: `GreengrassContainer`

`containerParams`  
<a name="connector-component-container-params-description"></a>(Optional) An object that contains the container parameters for this component. The component uses these parameters if you specify `GreengrassContainer` for `containerMode`.  
This object contains the following information:    
`memorySize`  
<a name="connector-component-container-params-memory-size-description"></a>(Optional) The amount of memory (in kilobytes) to allocate to the component.  
Defaults to 512 MB (525,312 KB).

`pubsubTopics`  <a name="connector-component-pubsub-topics-parameter"></a>
(Optional) An object that contains the topics where the component subscribes to receive messages. You can specify each topic and whether the component subscribes to MQTT topics from AWS IoT Core or local publish/subscribe topics.  
This object contains the following information:    
`0` – This is an array index as a string.  
An object that contains the following information:    
`type`  
(Optional) The type of publish/subscribe messaging that this component uses to subscribe to messages. Choose from the following options:  
+ `PUB_SUB` – Subscribe to local publish/subscribe messages. If you choose this option, the topic can't contain MQTT wildcards. For more information about how to send messages from custom component when you specify this option, see [Publish/subscribe local messages](ipc-publish-subscribe.md).
+ `IOT_CORE` – Subscribe to AWS IoT Core MQTT messages. If you choose this option, the topic can contain MQTT wildcards. For more information about how to send messages from custom components when you specify this option, see [Publish/subscribe AWS IoT Core MQTT messages](ipc-iot-core-mqtt.md).
Default: `PUB_SUB`  
`topic`  
(Optional) The topic to which the component subscribes to receive messages. If you specify `IotCore` for `type`, you can use MQTT wildcards (`+` and `#`) in this topic.

**Example: Configuration merge update (container mode)**  

```
{
  "lambdaExecutionParameters": {
    "EnvironmentVariables": {
      "DEFAULT_SNS_ARN": "arn:aws:sns:us-west-2:123456789012:mytopic"
    }
  },
  "containerMode": "GreengrassContainer"
}
```

**Example: Configuration merge update (no container mode)**  

```
{
  "lambdaExecutionParameters": {
    "EnvironmentVariables": {
      "DEFAULT_SNS_ARN": "arn:aws:sns:us-west-2:123456789012:mytopic"
    }
  },
  "containerMode": "NoContainer"
}
```

## Input data
<a name="sns-component-input-data"></a>

This component accepts messages on the following topic and publishes the message as is to the target Amazon SNS topic. <a name="connector-component-local-publish"></a>By default, this component subscribes to local publish/subscribe messages. For more information about how to publish messages to this component from your custom components, see [Publish/subscribe local messages](ipc-publish-subscribe.md). 

**Default topic (local publish/subscribe):** `sns/message`

<a name="connector-component-input-properties"></a>The message accepts the following properties. Input messages must be in JSON format.

`request`  
The information about the message to send to the Amazon SNS topic.  
Type: `object` that contains the following information:    
`message`  
The content of the message as a string.  
To send a JSON object, serialize it as a string, and specify `json` for the `message_structure` property.  
Type: `string`  
`subject`  
(Optional) The subject of the message.  
Type: `string`  
The subject can be ASCII text and up to 100 characters. It must begin with a letter, number, or punctuation mark. It can't include line breaks or control characters.  
`sns_topic_arn`  
(Optional) The ARN of the Amazon SNS topic where this component publishes the message. Specify this property to override the default Amazon SNS topic.  
Type: `string`  
`message_structure`  
(Optional) The structure of the message. Specify `json` to send a JSON message that you serialize as a string in the `content` property.  
Type: `string`  
Valid values: `json`

`id`  <a name="connector-component-input-property-id"></a>
An arbitrary ID for the request. Use this property to map an input request to an output response. When you specify this property, the component sets the `id` property in the response object to this value.  
Type: `string`

**Note**  
The message size can be a maximum of 256 KB.

**Example input: String message**  

```
{
  "request": {
    "subject": "Message subject",
    "message": "Message data",
    "sns_topic_arn": "arn:aws:sns:region:account-id:topic2-name"
  },
  "id": "request123"
}
```

**Example input: JSON message**  

```
{
  "request": {
    "subject": "Message subject",
    "message": "{ \"default\": \"Message data\" }",
    "message_structure": "json"
  },
  "id": "request123"
}
```

## Output data
<a name="sns-component-output-data"></a>

 <a name="connector-component-output-data"></a>This component publishes responses as output data on the following MQTT topic by default. You must specify this topic as the `subject` in the configuration for the [legacy subscription router component](legacy-subscription-router-component.md). For more information about how to subscribe to messages on this topic in your custom components, see [Publish/subscribe AWS IoT Core MQTT messages](ipc-iot-core-mqtt.md). 

**Default topic (AWS IoT Core MQTT):** `sns/message/status`

**Example output: Success**  

```
{
  "response": {
    "sns_message_id": "f80a81bc-f44c-56f2-a0f0-d5af6a727c8a",
    "status": "success"
  },
  "id": "request123"
}
```

**Example output: Failure**  

```
{
  "response" : {
    "error": "InvalidInputException",
    "error_message": "SNS Topic Arn is invalid",
    "status": "fail"
  },
  "id": "request123"
}
```

## Local log file
<a name="sns-component-log-file"></a>

This component uses the following log file.

```
/greengrass/v2/logs/aws.greengrass.SNS.log
```

**To view this component's logs**
+ Run the following command on the core device to view this component's log file in real time. Replace `/greengrass/v2` with the path to the AWS IoT Greengrass root folder.

  ```
  sudo tail -f /greengrass/v2/logs/aws.greengrass.SNS.log
  ```

## Licenses
<a name="sns-component-licenses"></a>

This component includes the following third-party software/licensing:<a name="boto-3-licenses"></a>
+ [AWS SDK for Python (Boto3)](https://pypi.org/project/boto3/)/Apache License 2.0
+ [botocore](https://pypi.org/project/botocore/)/Apache License 2.0
+ [dateutil](https://pypi.org/project/python-dateutil/1.4/)/PSF License
+ [docutils](https://pypi.org/project/docutils/)/BSD License, GNU General Public License (GPL), Python Software Foundation License, Public Domain
+ [jmespath](https://pypi.org/project/jmespath/)/MIT License
+ [s3transfer](https://pypi.org/project/s3transfer/)/Apache License 2.0
+ [urllib3](https://pypi.org/project/urllib3/)/MIT License

<a name="component-core-software-license"></a>This component is released under the [Greengrass Core Software License Agreement](https://greengrass-release-license.s3.us-west-2.amazonaws.com/greengrass-license-v1.pdf).

## Changelog
<a name="sns-component-changelog"></a>

The following table describes the changes in each version of the component.


|  **Version**  |  **Changes**  | 
| --- | --- | 
|  2.1.10  | Version updated for Greengrass nucleus version 2.15.0 release. | 
|  2.1.9  | Version updated for Greengrass nucleus version 2.14.0 release. | 
|  2.1.8  | Version updated for Greengrass nucleus version 2.13.0 release. | 
|  2.1.7  | Version updated for Greengrass nucleus version 2.12.0 release. | 
|  2.1.6  | Version updated for Greengrass nucleus version 2.11.0 release. | 
|  2.1.5  | Version updated for Greengrass nucleus version 2.10.0 release. | 
|  2.1.4  | Version updated for Greengrass nucleus version 2.9.0 release. | 
|  2.1.3  | Version updated for Greengrass nucleus version 2.8.0 release. | 
|  2.1.2  |  Version updated for Greengrass nucleus version 2.7.0 release.  | 
|  2.1.1  |  Version updated for Greengrass nucleus version 2.6.0 release.  | 
|  2.1.0  |  [\[See the AWS documentation website for more details\]](http://docs.aws.amazon.com/greengrass/v2/developerguide/sns-component.html)  | 
|  2.0.8  |  Version updated for Greengrass nucleus version 2.5.0 release.  | 
|  2.0.7  |  Version updated for Greengrass nucleus version 2.4.0 release.  | 
|  2.0.6  |  Version updated for Greengrass nucleus version 2.3.0 release.  | 
|  2.0.5  |  Version updated for Greengrass nucleus version 2.2.0 release.  | 
|  2.0.4  |  Version updated for Greengrass nucleus version 2.1.0 release.  | 
|  2.0.3  |  Initial version.  |