AWSLambda

The helper library to invoke AWS Lambda functions from agent code.

To add this library to your model, add the following lines to the top of your agent code:

#require "AWSRequestV4.class.nut:1.0.2"
#require "AWSLambda.class.nut:1.0.0"

Note: AWSRequestV4 must be included.

Class Methods

constructor(region, accessKeyId, secretAccessKey)

AWSLambda object constructor takes the following parameters:

Parameter	Type	Description
region	string	AWS region (e.g. "us-west-1")
accessKeyId	string	IAM Access Key ID
secretAccessKey	string	IAM Secret Access Key

Example

#require "AWSRequestV4.class.nut:1.0.2"
#require "AWSLambda.class.nut:1.0.0"

const AWS_LAMBDA_REGION = "us-west-1";
const ACCESS_KEY_ID     = "YOUR_ACCESS_KEY_ID";
const SECRET_ACCESS_KEY = "YOUR_SECRET_ACCESS_KEY";

lambda <- AWSLambda(AWS_LAMBDA_REGION, ACCESS_KEY_ID, SECRET_ACCESS_KEY);

invoke(params, callback = null)

Invokes lambda function. Please refer to the AWS Lambda documentation for more details.

The function takes the following parameters:

Parameter	Type	Description
params	table	Table of parameters (See API Reference)
callback	function	Callback function that takes one parameter (response table)

where params include:

Parameter	Type	Required	Default Value	Description
functionName	string	yes	N/A	Name of the Lambda function to be called
payload	serializable data	yes	N/A	Data that you want to provide to your Lambda
contentType	string	no	"application/json"	The payload content type

Example

local payload = { "message" : "Hello, world!" };
local params  = { "payload" : payload, "functionName" : "mySend" };
lambda.invoke(params, function (result) {
    local payload = http.jsondecode(result.body);
    if ("Message" in payload) {
        server.error(payload.Message);
    } else {
        server.log("[SUCCESS]: " + payload.transmit);
    }
}.bindenv(this))

License

The AWSLambda library is licensed under the MIT License.