AWS Lambda Operations Reference

Orkes Conductor integrates with AWS Lambda to let you invoke and manage Lambda functions directly from your workflows. Once you configure the AWS Lambda integration, you can use the following operations to create, retrieve, update, and delete Lambda functions without leaving your workflow.

This page covers the parameters and expected output for each operation available in the AWS Lambda integration.

List Functions

Lists all Lambda functions in your AWS account.

Input Parameters

Parameter	Description	Type	Required/Optional
Max Items	Maximum number of functions to return. Defaults to 50.	integer	Optional.

Output Parameters

Returns count, nextMarker, and a functions array where each entry contains functionName, functionArn, runtime, role, handler, codeSize, description, timeout, memorySize, lastModified, codeSha256, version, state, and stateReason.

Create Function

Creates a new Lambda function from a base64-encoded ZIP package.

Input Parameters

Parameter	Description	Type	Required/Optional
Function Name	Name of the Lambda function to create.	string	Required.
Runtime	Runtime environment. For example, python3.12, nodejs20.x, java21.	string	Required.
Role	ARN of the IAM role that Lambda assumes during execution. To create one: Go to IAM > Roles > Create role. Select AWS service, choose Lambda, and click Next. Search for and attach AWSLambdaBasicExecutionRole, then click Next. Enter a role name, for example lambda-execution-role, and click Create role. Open the created role and copy the ARN. For example: arn:aws:iam::1234567890:role/lambda-execution-role.	string	Required.
Handler	Function entry point. For example, index.lambda_handler for Python, index.handler for Node.js, or com.example.Handler::handleRequest for Java.	string	Required.
Zip File Base 64	Function code as a base64-encoded ZIP file. Create a ZIP of your code, then run base64 -i function.zip | tr -d '\n' (Mac/Linux) or [Convert]::ToBase64String([IO.File]::ReadAllBytes("function.zip")) (Windows PowerShell) to get the encoded string.	string	Required.
Description	A description of the function's purpose.	string	Optional.
Memory Size	Memory allocated in MB (128–10240). Defaults to 128.	integer	Optional.
Timeout	Maximum execution time in seconds (1–900). Defaults to 3.	integer	Optional.
Environment Variables	Key-value pairs injected as environment variables, as a JSON string. For example, {"KEY":"value"}.	string	Optional.

Output Parameters

Returns the function's status, functionName, functionArn, runtime, role, handler, codeSize, description, timeout, memorySize, lastModified, codeSha256, version, and state.

Get Function Details

Retrieves full configuration and code details of a specific Lambda function.

Input Parameters

Parameter	Description	Type	Required/Optional
Function Name	Name of the Lambda function to retrieve.	string	Required.

Output Parameters

Returns the function's status, functionName, functionArn, runtime, role, handler, codeSize, description, timeout, memorySize, lastModified, codeSha256, version, state, stateReason, lastUpdateStatus, packageType, code.location, and code.repositoryType.

Update Function Configuration

Updates the configuration of an existing Lambda function without redeploying code.

Input Parameters

Parameter	Description	Type	Required/Optional
Function Name	Name of the Lambda function to update.	string	Required.
Memory Size	Updated memory allocated in MB (128–10240).	integer	Optional.
Timeout	Updated maximum execution time in seconds (1–900).	integer	Optional.
Description	Updated description of the function's purpose.	string	Optional.
Environment Variables	Updated key-value pairs injected as environment variables, as a JSON string. For example, {"KEY":"value"}.	string	Optional.

Output Parameters

Returns the function's updated functionName, functionArn, memorySize, timeout, description, and lastModified.

Invoke Function

Invokes a Lambda function synchronously or asynchronously with a JSON payload.

Input Parameters

Parameter	Description	Type	Required/Optional
Function Name	Name of the Lambda function to invoke.	string	Required.
Payload	Input payload as a JSON string. For example, {"message": "Hello from Lambda!"}.	string	Required.
Invocation Type	The invocation type for the request. Supported values: RequestResponse for synchronous (waits for response) Event for asynchronous (returns immediately) Defaults to RequestResponse.	string	Optional.

Output Parameters

Returns the function's statusCode, requestId, response, functionError, and error.

Delete Function

Permanently deletes an existing Lambda function.

Input Parameters

Parameter	Description	Type	Required/Optional
Function Name	Name of the Lambda function to delete.	string	Required.

Output Parameters

Returns the status, functionName, and message confirming deletion.