Use GetFunction with an Amazon SDK or CLI - Amazon Lambda
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Use GetFunction with an Amazon SDK or CLI

The following code examples show how to use GetFunction.

Action examples are code excerpts from larger programs and must be run in context. You can see this action in context in the following code example:

.NET
Amazon SDK for .NET
Note

There's more on GitHub. Find the complete example and learn how to set up and run in the Amazon Code Examples Repository.

/// <summary> /// Gets information about a Lambda function. /// </summary> /// <param name="functionName">The name of the Lambda function for /// which to retrieve information.</param> /// <returns>Async Task.</returns> public async Task<FunctionConfiguration> GetFunctionAsync(string functionName) { var functionRequest = new GetFunctionRequest { FunctionName = functionName, }; var response = await _lambdaService.GetFunctionAsync(functionRequest); return response.Configuration; }
  • For API details, see GetFunction in Amazon SDK for .NET API Reference.

C++
SDK for C++
Note

There's more on GitHub. Find the complete example and learn how to set up and run in the Amazon Code Examples Repository.

Aws::Client::ClientConfiguration clientConfig; // Optional: Set to the AWS Region in which the bucket was created (overrides config file). // clientConfig.region = "us-east-1"; Aws::Lambda::LambdaClient client(clientConfig); Aws::Lambda::Model::GetFunctionRequest request; request.SetFunctionName(functionName); Aws::Lambda::Model::GetFunctionOutcome outcome = client.GetFunction(request); if (outcome.IsSuccess()) { std::cout << "Function retrieve.\n" << outcome.GetResult().GetConfiguration().Jsonize().View().WriteReadable() << std::endl; } else { std::cerr << "Error with Lambda::GetFunction. " << outcome.GetError().GetMessage() << std::endl; }
  • For API details, see GetFunction in Amazon SDK for C++ API Reference.

CLI
Amazon CLI

To retrieve information about a function

The following get-function example displays information about the my-function function.

aws lambda get-function \ --function-name my-function

Output:

{ "Concurrency": { "ReservedConcurrentExecutions": 100 }, "Code": { "RepositoryType": "S3", "Location": "https://awslambda-us-west-2-tasks.s3.us-west-2.amazonaws.com/snapshots/123456789012/my-function..." }, "Configuration": { "TracingConfig": { "Mode": "PassThrough" }, "Version": "$LATEST", "CodeSha256": "5tT2qgzYUHoqwR616pZ2dpkn/0J1FrzJmlKidWaaCgk=", "FunctionName": "my-function", "VpcConfig": { "SubnetIds": [], "VpcId": "", "SecurityGroupIds": [] }, "MemorySize": 128, "RevisionId": "28f0fb31-5c5c-43d3-8955-03e76c5c1075", "CodeSize": 304, "FunctionArn": "arn:aws:lambda:us-west-2:123456789012:function:my-function", "Handler": "index.handler", "Role": "arn:aws:iam::123456789012:role/service-role/helloWorldPython-role-uy3l9qyq", "Timeout": 3, "LastModified": "2019-09-24T18:20:35.054+0000", "Runtime": "nodejs10.x", "Description": "" } }

For more information, see Amazon Lambda Function Configuration in the Amazon Lambda Developer Guide.

  • For API details, see GetFunction in Amazon CLI Command Reference.

Go
SDK for Go V2
Note

There's more on GitHub. Find the complete example and learn how to set up and run in the Amazon Code Examples Repository.

// FunctionWrapper encapsulates function actions used in the examples. // It contains an AWS Lambda service client that is used to perform user actions. type FunctionWrapper struct { LambdaClient *lambda.Client } // GetFunction gets data about the Lambda function specified by functionName. func (wrapper FunctionWrapper) GetFunction(functionName string) types.State { var state types.State funcOutput, err := wrapper.LambdaClient.GetFunction(context.TODO(), &lambda.GetFunctionInput{ FunctionName: aws.String(functionName), }) if err != nil { log.Panicf("Couldn't get function %v. Here's why: %v\n", functionName, err) } else { state = funcOutput.Configuration.State } return state }
  • For API details, see GetFunction in Amazon SDK for Go API Reference.

JavaScript
SDK for JavaScript (v3)
Note

There's more on GitHub. Find the complete example and learn how to set up and run in the Amazon Code Examples Repository.

const getFunction = (funcName) => { const client = new LambdaClient({}); const command = new GetFunctionCommand({ FunctionName: funcName }); return client.send(command); };
  • For API details, see GetFunction in Amazon SDK for JavaScript API Reference.

PHP
SDK for PHP
Note

There's more on GitHub. Find the complete example and learn how to set up and run in the Amazon Code Examples Repository.

public function getFunction($functionName) { return $this->lambdaClient->getFunction([ 'FunctionName' => $functionName, ]); }
  • For API details, see GetFunction in Amazon SDK for PHP API Reference.

Python
SDK for Python (Boto3)
Note

There's more on GitHub. Find the complete example and learn how to set up and run in the Amazon Code Examples Repository.

class LambdaWrapper: def __init__(self, lambda_client, iam_resource): self.lambda_client = lambda_client self.iam_resource = iam_resource def get_function(self, function_name): """ Gets data about a Lambda function. :param function_name: The name of the function. :return: The function data. """ response = None try: response = self.lambda_client.get_function(FunctionName=function_name) except ClientError as err: if err.response["Error"]["Code"] == "ResourceNotFoundException": logger.info("Function %s does not exist.", function_name) else: logger.error( "Couldn't get function %s. Here's why: %s: %s", function_name, err.response["Error"]["Code"], err.response["Error"]["Message"], ) raise return response
  • For API details, see GetFunction in Amazon SDK for Python (Boto3) API Reference.

Ruby
SDK for Ruby
Note

There's more on GitHub. Find the complete example and learn how to set up and run in the Amazon Code Examples Repository.

class LambdaWrapper attr_accessor :lambda_client def initialize @lambda_client = Aws::Lambda::Client.new @logger = Logger.new($stdout) @logger.level = Logger::WARN end # Gets data about a Lambda function. # # @param function_name: The name of the function. # @return response: The function data, or nil if no such function exists. def get_function(function_name) @lambda_client.get_function( { function_name: function_name } ) rescue Aws::Lambda::Errors::ResourceNotFoundException => e @logger.debug("Could not find function: #{function_name}:\n #{e.message}") nil end
  • For API details, see GetFunction in Amazon SDK for Ruby API Reference.

Rust
SDK for Rust
Note

There's more on GitHub. Find the complete example and learn how to set up and run in the Amazon Code Examples Repository.

/** Get the Lambda function with this Manager's name. */ pub async fn get_function(&self) -> Result<GetFunctionOutput, anyhow::Error> { info!("Getting lambda function"); self.lambda_client .get_function() .function_name(self.lambda_name.clone()) .send() .await .map_err(anyhow::Error::from) }
  • For API details, see GetFunction in Amazon SDK for Rust API reference.

SAP ABAP
SDK for SAP ABAP
Note

There's more on GitHub. Find the complete example and learn how to set up and run in the Amazon Code Examples Repository.

TRY. oo_result = lo_lmd->getfunction( iv_functionname = iv_function_name ). " oo_result is returned for testing purposes. " MESSAGE 'Lambda function information retrieved.' TYPE 'I'. CATCH /aws1/cx_lmdinvparamvalueex. MESSAGE 'The request contains a non-valid parameter.' TYPE 'E'. CATCH /aws1/cx_lmdserviceexception. MESSAGE 'An internal problem was encountered by the AWS Lambda service.' TYPE 'E'. CATCH /aws1/cx_lmdtoomanyrequestsex. MESSAGE 'The maximum request throughput was reached.' TYPE 'E'. ENDTRY.
  • For API details, see GetFunction in Amazon SDK for SAP ABAP API reference.

For a complete list of Amazon SDK developer guides and code examples, see Using Lambda with an Amazon SDK. This topic also includes information about getting started and details about previous SDK versions.