Package software.amazon.awscdk.services.lambda

Interface CfnFunctionProps

All Superinterfaces:

software.amazon.jsii.JsiiSerializable

All Known Implementing Classes:

CfnFunctionProps.Jsii$Proxy

@Generated(value="jsii-pacmak/1.118.0 (build 02eec31)",
           date="2025-11-10T13:40:08.747Z")
@Stability(Stable)
public interface CfnFunctionProps
extends software.amazon.jsii.JsiiSerializable

Properties for defining a CfnFunction.

Example:

 // The code below shows an example of how to instantiate this type.
 // The values are placeholders you should change.
 import software.amazon.awscdk.services.lambda.*;
 CfnFunctionProps cfnFunctionProps = CfnFunctionProps.builder()
         .code(CodeProperty.builder()
                 .imageUri("imageUri")
                 .s3Bucket("s3Bucket")
                 .s3Key("s3Key")
                 .s3ObjectVersion("s3ObjectVersion")
                 .sourceKmsKeyArn("sourceKmsKeyArn")
                 .zipFile("zipFile")
                 .build())
         .role("role")
         // the properties below are optional
         .architectures(List.of("architectures"))
         .codeSigningConfigArn("codeSigningConfigArn")
         .deadLetterConfig(DeadLetterConfigProperty.builder()
                 .targetArn("targetArn")
                 .build())
         .description("description")
         .environment(EnvironmentProperty.builder()
                 .variables(Map.of(
                         "variablesKey", "variables"))
                 .build())
         .ephemeralStorage(EphemeralStorageProperty.builder()
                 .size(123)
                 .build())
         .fileSystemConfigs(List.of(FileSystemConfigProperty.builder()
                 .arn("arn")
                 .localMountPath("localMountPath")
                 .build()))
         .functionName("functionName")
         .handler("handler")
         .imageConfig(ImageConfigProperty.builder()
                 .command(List.of("command"))
                 .entryPoint(List.of("entryPoint"))
                 .workingDirectory("workingDirectory")
                 .build())
         .kmsKeyArn("kmsKeyArn")
         .layers(List.of("layers"))
         .loggingConfig(LoggingConfigProperty.builder()
                 .applicationLogLevel("applicationLogLevel")
                 .logFormat("logFormat")
                 .logGroup("logGroup")
                 .systemLogLevel("systemLogLevel")
                 .build())
         .memorySize(123)
         .packageType("packageType")
         .recursiveLoop("recursiveLoop")
         .reservedConcurrentExecutions(123)
         .runtime("runtime")
         .runtimeManagementConfig(RuntimeManagementConfigProperty.builder()
                 .updateRuntimeOn("updateRuntimeOn")
                 // the properties below are optional
                 .runtimeVersionArn("runtimeVersionArn")
                 .build())
         .snapStart(SnapStartProperty.builder()
                 .applyOn("applyOn")
                 .build())
         .tags(List.of(CfnTag.builder()
                 .key("key")
                 .value("value")
                 .build()))
         .timeout(123)
         .tracingConfig(TracingConfigProperty.builder()
                 .mode("mode")
                 .build())
         .vpcConfig(VpcConfigProperty.builder()
                 .ipv6AllowedForDualStack(false)
                 .securityGroupIds(List.of("securityGroupIds"))
                 .subnetIds(List.of("subnetIds"))
                 .build())
         .build();
 

See Also:

• http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-lambda-function.html

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static final class	CfnFunctionProps.Builder	A builder for CfnFunctionProps
static final class	CfnFunctionProps.Jsii$Proxy	An implementation for CfnFunctionProps

Method Summary

Modifier and Type	Method	Description
static CfnFunctionProps.Builder	builder()
default List<String>	getArchitectures()	The instruction set architecture that the function supports.
Object	getCode()	The code for the function.
default String	getCodeSigningConfigArn()	To enable code signing for this function, specify the ARN of a code-signing configuration.
default Object	getDeadLetterConfig()	A dead-letter queue configuration that specifies the queue or topic where Lambda sends asynchronous events when they fail processing.
default String	getDescription()	A description of the function.
default Object	getEnvironment()	Environment variables that are accessible from function code during execution.
default Object	getEphemeralStorage()	The size of the function's /tmp directory in MB.
default Object	getFileSystemConfigs()	Connection settings for an Amazon EFS file system.
default String	getFunctionName()	The name of the Lambda function, up to 64 characters in length.
default String	getHandler()	The name of the method within your code that Lambda calls to run your function.
default Object	getImageConfig()	Configuration values that override the container image Dockerfile settings.
default String	getKmsKeyArn()	The ARN of the AWS Key Management Service ( AWS KMS ) customer managed key that's used to encrypt the following resources:.
default List<String>	getLayers()	A list of function layers to add to the function's execution environment.
default Object	getLoggingConfig()	The function's Amazon CloudWatch Logs configuration settings.
default Number	getMemorySize()	The amount of memory available to the function at runtime.
default String	getPackageType()	The type of deployment package.
default String	getRecursiveLoop()	The status of your function's recursive loop detection configuration.
default Number	getReservedConcurrentExecutions()	The number of simultaneous executions to reserve for the function.
String	getRole()	The Amazon Resource Name (ARN) of the function's execution role.
default String	getRuntime()	The identifier of the function's runtime .
default Object	getRuntimeManagementConfig()	Sets the runtime management configuration for a function's version.
default Object	getSnapStart()	The function's AWS Lambda SnapStart setting.
default List<CfnTag>	getTags()	A list of tags to apply to the function.
default Number	getTimeout()	The amount of time (in seconds) that Lambda allows a function to run before stopping it.
default Object	getTracingConfig()	Set Mode to Active to sample and trace a subset of incoming requests with X-Ray .
default Object	getVpcConfig()	For network connectivity to AWS resources in a VPC, specify a list of security groups and subnets in the VPC.

Methods inherited from interface software.amazon.jsii.JsiiSerializable

$jsii$toJson

Method Details

getCode

@Stability(Stable)
@NotNull
Object getCode()

The code for the function. You can define your function code in multiple ways:.

• For .zip deployment packages, you can specify the Amazon S3 location of the .zip file in the S3Bucket , S3Key , and S3ObjectVersion properties.
• For .zip deployment packages, you can alternatively define the function code inline in the ZipFile property. This method works only for Node.js and Python functions.
• For container images, specify the URI of your container image in the Amazon ECR registry in the ImageUri property.

Returns union: either IResolvable or CfnFunction.CodeProperty

See Also:

• http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-lambda-function.html#cfn-lambda-function-code

getRole

@Stability(Stable)
@NotNull
String getRole()

The Amazon Resource Name (ARN) of the function's execution role.

See Also:

• http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-lambda-function.html#cfn-lambda-function-role

getArchitectures

@Stability(Stable)
@Nullable
default List<String> getArchitectures()

The instruction set architecture that the function supports.

Enter a string array with one of the valid values (arm64 or x86_64). The default value is x86_64 .

See Also:

• http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-lambda-function.html#cfn-lambda-function-architectures

getCodeSigningConfigArn

@Stability(Stable)
@Nullable
default String getCodeSigningConfigArn()

To enable code signing for this function, specify the ARN of a code-signing configuration.

A code-signing configuration includes a set of signing profiles, which define the trusted publishers for this function.

See Also:

• http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-lambda-function.html#cfn-lambda-function-codesigningconfigarn

getDeadLetterConfig

@Stability(Stable)
@Nullable
default Object getDeadLetterConfig()

A dead-letter queue configuration that specifies the queue or topic where Lambda sends asynchronous events when they fail processing.

For more information, see Dead-letter queues .

Returns union: either IResolvable or CfnFunction.DeadLetterConfigProperty

See Also:

• http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-lambda-function.html#cfn-lambda-function-deadletterconfig

getDescription

@Stability(Stable)
@Nullable
default String getDescription()

A description of the function.

See Also:

• http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-lambda-function.html#cfn-lambda-function-description

getEnvironment

@Stability(Stable)
@Nullable
default Object getEnvironment()

Environment variables that are accessible from function code during execution.

Returns union: either IResolvable or CfnFunction.EnvironmentProperty

See Also:

• http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-lambda-function.html#cfn-lambda-function-environment

getEphemeralStorage

@Stability(Stable)
@Nullable
default Object getEphemeralStorage()

The size of the function's /tmp directory in MB.

The default value is 512, but it can be any whole number between 512 and 10,240 MB.

Returns union: either IResolvable or CfnFunction.EphemeralStorageProperty

See Also:

• http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-lambda-function.html#cfn-lambda-function-ephemeralstorage

getFileSystemConfigs

@Stability(Stable)
@Nullable
default Object getFileSystemConfigs()

Connection settings for an Amazon EFS file system.

To connect a function to a file system, a mount target must be available in every Availability Zone that your function connects to. If your template contains an AWS::EFS::MountTarget resource, you must also specify a DependsOn attribute to ensure that the mount target is created or updated before the function.

For more information about using the DependsOn attribute, see DependsOn Attribute .

Returns union: either IResolvable or Listinvalid input: '<'either IResolvable or CfnFunction.FileSystemConfigProperty>

See Also:

• http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-lambda-function.html#cfn-lambda-function-filesystemconfigs

getFunctionName

@Stability(Stable)
@Nullable
default String getFunctionName()

The name of the Lambda function, up to 64 characters in length.

If you don't specify a name, AWS CloudFormation generates one.

If you specify a name, you cannot perform updates that require replacement of this resource. You can perform updates that require no or some interruption. If you must replace the resource, specify a new name.

See Also:

• http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-lambda-function.html#cfn-lambda-function-functionname

getHandler

@Stability(Stable)
@Nullable
default String getHandler()

The name of the method within your code that Lambda calls to run your function.

Handler is required if the deployment package is a .zip file archive. The format includes the file name. It can also include namespaces and other qualifiers, depending on the runtime. For more information, see Lambda programming model .

See Also:

• http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-lambda-function.html#cfn-lambda-function-handler

getImageConfig

@Stability(Stable)
@Nullable
default Object getImageConfig()

Configuration values that override the container image Dockerfile settings.

For more information, see Container image settings .

Returns union: either IResolvable or CfnFunction.ImageConfigProperty

See Also:

• http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-lambda-function.html#cfn-lambda-function-imageconfig

getKmsKeyArn

@Stability(Stable)
@Nullable
default String getKmsKeyArn()

The ARN of the AWS Key Management Service ( AWS KMS ) customer managed key that's used to encrypt the following resources:.

• The function's environment variables .
• The function's Lambda SnapStart snapshots.
• When used with SourceKMSKeyArn , the unzipped version of the .zip deployment package that's used for function invocations. For more information, see Specifying a customer managed key for Lambda .
• The optimized version of the container image that's used for function invocations. Note that this is not the same key that's used to protect your container image in the Amazon Elastic Container Registry (Amazon ECR). For more information, see Function lifecycle .

If you don't provide a customer managed key, Lambda uses an AWS owned key or an AWS managed key .

See Also:

• http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-lambda-function.html#cfn-lambda-function-kmskeyarn

getLayers

@Stability(Stable)
@Nullable
default List<String> getLayers()

A list of function layers to add to the function's execution environment. Specify each layer by its ARN, including the version.

See Also:

• http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-lambda-function.html#cfn-lambda-function-layers

getLoggingConfig

@Stability(Stable)
@Nullable
default Object getLoggingConfig()

The function's Amazon CloudWatch Logs configuration settings.

Returns union: either IResolvable or CfnFunction.LoggingConfigProperty

See Also:

• http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-lambda-function.html#cfn-lambda-function-loggingconfig

getMemorySize

@Stability(Stable)
@Nullable
default Number getMemorySize()

The amount of memory available to the function at runtime. Increasing the function memory also increases its CPU allocation. The default value is 128 MB. The value can be any multiple of 1 MB. Note that new AWS accounts have reduced concurrency and memory quotas. AWS raises these quotas automatically based on your usage. You can also request a quota increase.

See Also:

• http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-lambda-function.html#cfn-lambda-function-memorysize

getPackageType

@Stability(Stable)
@Nullable
default String getPackageType()

The type of deployment package.

Set to Image for container image and set Zip for .zip file archive.

See Also:

• http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-lambda-function.html#cfn-lambda-function-packagetype

getRecursiveLoop

@Stability(Stable)
@Nullable
default String getRecursiveLoop()

The status of your function's recursive loop detection configuration.

When this value is set to Allow and Lambda detects your function being invoked as part of a recursive loop, it doesn't take any action.

When this value is set to Terminate and Lambda detects your function being invoked as part of a recursive loop, it stops your function being invoked and notifies you.

See Also:

• http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-lambda-function.html#cfn-lambda-function-recursiveloop

getReservedConcurrentExecutions

@Stability(Stable)
@Nullable
default Number getReservedConcurrentExecutions()

The number of simultaneous executions to reserve for the function.

See Also:

• http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-lambda-function.html#cfn-lambda-function-reservedconcurrentexecutions

getRuntime

@Stability(Stable)
@Nullable
default String getRuntime()

The identifier of the function's runtime . Runtime is required if the deployment package is a .zip file archive. Specifying a runtime results in an error if you're deploying a function using a container image.

The following list includes deprecated runtimes. Lambda blocks creating new functions and updating existing functions shortly after each runtime is deprecated. For more information, see Runtime use after deprecation .

For a list of all currently supported runtimes, see Supported runtimes .

See Also:

• http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-lambda-function.html#cfn-lambda-function-runtime

getRuntimeManagementConfig

@Stability(Stable)
@Nullable
default Object getRuntimeManagementConfig()

Sets the runtime management configuration for a function's version.

For more information, see Runtime updates .

Returns union: either IResolvable or CfnFunction.RuntimeManagementConfigProperty

See Also:

• http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-lambda-function.html#cfn-lambda-function-runtimemanagementconfig

getSnapStart

@Stability(Stable)
@Nullable
default Object getSnapStart()

The function's AWS Lambda SnapStart setting.

Returns union: either IResolvable or CfnFunction.SnapStartProperty

See Also:

• http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-lambda-function.html#cfn-lambda-function-snapstart

getTags

@Stability(Stable)
@Nullable
default List<CfnTag> getTags()

A list of tags to apply to the function.

You must have the lambda:TagResource , lambda:UntagResource , and lambda:ListTags permissions for your IAM principal to manage the AWS CloudFormation stack. If you don't have these permissions, there might be unexpected behavior with stack-level tags propagating to the resource during resource creation and update.

See Also:

• http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-lambda-function.html#cfn-lambda-function-tags

getTimeout

@Stability(Stable)
@Nullable
default Number getTimeout()

The amount of time (in seconds) that Lambda allows a function to run before stopping it.

The default is 3 seconds. The maximum allowed value is 900 seconds. For more information, see Lambda execution environment .

See Also:

• http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-lambda-function.html#cfn-lambda-function-timeout

getTracingConfig

@Stability(Stable)
@Nullable
default Object getTracingConfig()

Set Mode to Active to sample and trace a subset of incoming requests with X-Ray .

Returns union: either IResolvable or CfnFunction.TracingConfigProperty

See Also:

• http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-lambda-function.html#cfn-lambda-function-tracingconfig

getVpcConfig

@Stability(Stable)
@Nullable
default Object getVpcConfig()

For network connectivity to AWS resources in a VPC, specify a list of security groups and subnets in the VPC.

When you connect a function to a VPC, it can access resources and the internet only through that VPC. For more information, see Configuring a Lambda function to access resources in a VPC .

Returns union: either IResolvable or CfnFunction.VpcConfigProperty

See Also:

• http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-lambda-function.html#cfn-lambda-function-vpcconfig

builder

@Stability(Stable)
static CfnFunctionProps.Builder builder()

Returns:

a CfnFunctionProps.Builder of CfnFunctionProps