A Node.js Lambda function bundled using esbuild.

NodejsFunction

The `AWS_NODEJS_CONNECTION_REUSE_ENABLED` environment variable does not exist in the AWS SDK for JavaScript v3.

This prop will be deprecated when the Lambda Node16 runtime is deprecated on June 12, 2024.
See https://docs.aws.amazon.com/lambda/latest/dg/lambda-runtimes.html#runtime-support-policy

Info for Node 16 runtimes / SDK v2 users:

Whether to automatically reuse TCP connections when working with the AWS
SDK for JavaScript v2.

This sets the `AWS_NODEJS_CONNECTION_REUSE_ENABLED` environment variable
to `1`.

awsSdkConnectionReuse

bundling

The code that will be deployed to the Lambda Handler.

If included, then properties related to
bundling of the code are ignored.

* If the `code` field is specified, then you must include the `handler` property.

code

The path to the dependencies lock file (`yarn.lock`, `pnpm-lock.yaml`, `bun.lockb`, `bun.lock` or `package-lock.json`).

This will be used as the source for the volume mounted in the Docker
container.

Modules specified in `nodeModules` will be installed using the right
installer (`yarn`, `pnpm`, `bun` or `npm`) along with this lock file.

depsLockFilePath

Path to the entry file (JavaScript or TypeScript).

If this is a relative path, it will be evaluated with respect to the
JavaScript/TypeScript source file that instantiates the `NodejsFunction`
construct. If the current project is not a Node project, relative paths are
not reliable and absolute paths should be used.

This file should be located underneath the `projectRoot` directory (by default,
the directory containing the package manager's lock file).

If omitted, the entry file will be derived from the TypeScript/JavaScript file
that instantiates the `NodejsFunction` construct, and the construct identifier
of the `NodejsFunction` construct, in the following way:

```
<filename>.<construct-id>.(ts|js)

// Example, if stack.ts contains the following:
new NodejsFunction(this, 'my-handler', { ... });

// Then the implicit entry point(s) will be
stack.my-handler.ts
stack.my-handler.js
```

Again: if the current project is not a Node project this is not reliable,
and instead explicit, absolute paths should be used.

entry

The name of the exported handler in the entry file.

* If the `code` property is supplied, then you must include the `handler` property. The handler should be the name of the file
that contains the exported handler and the function that should be called when the AWS Lambda is invoked. For example, if
you had a file called `myLambda.js` and the function to be invoked was `myHandler`, then you should input `handler` property as `myLambda.myHandler`.

* If the `code` property is not supplied and the handler input does not contain a `.`, then the handler is prefixed with `index.` (index period). Otherwise,
the handler property is not modified.

handler

The path to the directory containing project config files (`package.json` or `tsconfig.json`).

projectRoot

The runtime environment.

Only runtimes of the Node.js family are
supported.

runtime

Specify the configuration of AWS Distro for OpenTelemetry (ADOT) instrumentation.

adotInstrumentation

Whether to allow the Lambda to send all ipv6 network traffic.

If set to true, there will only be a single egress rule which allows all
outbound ipv6 traffic. If set to false, you must individually add traffic rules to allow the
Lambda to connect to network targets using ipv6.

Do not specify this property if the `securityGroups` or `securityGroup` property is set.
Instead, configure `allowAllIpv6Outbound` directly on the security group.

allowAllIpv6Outbound

Whether to allow the Lambda to send all network traffic (except ipv6).

If set to false, you must individually add traffic rules to allow the
Lambda to connect to network targets.

Do not specify this property if the `securityGroups` or `securityGroup` property is set.
Instead, configure `allowAllOutbound` directly on the security group.

allowAllOutbound

Lambda Functions in a public subnet can NOT access the internet.

Use this property to acknowledge this limitation and still place the function in a public subnet.

allowPublicSubnet

Sets the application log level for the function.

applicationLogLevel

applicationLogLevelV2

The system architectures compatible with this lambda function.

architecture

Code signing config associated with this function.

codeSigningConfig

Options for the `lambda.Version` resource automatically created by the `fn.currentVersion` method.

currentVersionOptions

The SQS queue to use if DLQ is enabled.

If SNS topic is desired, specify `deadLetterTopic` property instead.

deadLetterQueue

Enabled DLQ.

If `deadLetterQueue` is undefined,
an SQS queue with default options will be defined for your Function.

deadLetterQueueEnabled

The SNS topic to use as a DLQ.

Note that if `deadLetterQueueEnabled` is set to `true`, an SQS queue will be created
rather than an SNS topic. Using an SNS topic as a DLQ requires this property to be set explicitly.

deadLetterTopic

description

The durable configuration for the function.

If durability is added to an existing function, a resource replacement will be triggered.
See the 'durableConfig' section in the module README for more details.

durableConfig

Key-value pairs that Lambda caches and makes available for your Lambda functions.

Use environment variables to apply configuration changes, such
as test and production environment configurations, without changing your
Lambda function source code.

environment

The AWS KMS key that's used to encrypt your function's environment variables.

environmentEncryption

The size of the function’s /tmp directory in MiB.

ephemeralStorageSize

Event sources for this function.

You can also add event sources using `addEventSource`.

events

The filesystem configuration for the lambda function.

filesystem

functionName

Initial policy statements to add to the created Lambda Role.

You can call `addToRolePolicy` to the created lambda to add statements post creation.

initialPolicy

Specify the version of CloudWatch Lambda insights to use for monitoring.

insightsVersion

Allows outbound IPv6 traffic on VPC functions that are connected to dual-stack subnets.

Only used if 'vpc' is supplied.

ipv6AllowedForDualStack

A list of layers to add to the function's execution environment.

You can configure your Lambda function to pull in
additional code during initialization in the form of layers. Layers are packages of libraries or other dependencies
that can be used by multiple functions.

layers

logFormat

loggingFormat

The log group the function sends logs to.

By default, Lambda functions send logs to an automatically created default log group named /aws/lambda/\<function name\>.
However you cannot change the properties of this auto-created log group using the AWS CDK, e.g. you cannot set a different log retention.

Use the `logGroup` property to create a fully customizable LogGroup ahead of time, and instruct the Lambda function to send logs to it.

Providing a user-controlled log group was rolled out to commercial regions on 2023-11-16.
If you are deploying to another type of region, please check regional availability first.

logGroup

Determine the removal policy of the log group that is auto-created by this construct.

Normally you want to retain the log group so you can diagnose issues
from logs even after a deployment that no longer includes the log group.
In that case, use the normal date-based retention policy to age out your
logs.

logRemovalPolicy

The number of days log events are kept in CloudWatch Logs.

When updating
this property, unsetting it doesn't remove the log retention policy. To
remove the retention policy, set the value to `INFINITE`.

This is a legacy API and we strongly recommend you move away from it if you can.
Instead create a fully customizable log group with `logs.LogGroup` and use the `logGroup` property
to instruct the Lambda function to send logs to it.
Migrating from `logRetention` to `logGroup` will cause the name of the log group to change.
Users and code and referencing the name verbatim will have to adjust.

In AWS CDK code, you can access the log group name directly from the LogGroup construct:
```ts
import * as logs from 'aws-cdk-lib/aws-logs';

declare const myLogGroup: logs.LogGroup;
myLogGroup.logGroupName;
```

logRetention

When log retention is specified, a custom resource attempts to create the CloudWatch log group.

These options control the retry policy when interacting with CloudWatch APIs.

This is a legacy API and we strongly recommend you migrate to `logGroup` if you can.
`logGroup` allows you to create a fully customizable log group and instruct the Lambda function to send logs to it.

logRetentionRetryOptions

The IAM role for the Lambda function associated with the custom resource that sets the retention policy.

This is a legacy API and we strongly recommend you migrate to `logGroup` if you can.
`logGroup` allows you to create a fully customizable log group and instruct the Lambda function to send logs to it.

logRetentionRole

The amount of memory, in MB, that is allocated to your Lambda function.

Lambda uses this value to proportionally allocate the amount of CPU
power. For more information, see Resource Model in the AWS Lambda
Developer Guide.

memorySize

Specify the configuration of Parameters and Secrets Extension.

paramsAndSecrets

profiling

profilingGroup

Sets the Recursive Loop Protection for Lambda Function.

It lets Lambda detect and terminate unintended recursive loops.

recursiveLoop

The maximum of concurrent executions you want to reserve for the function.

reservedConcurrentExecutions

Lambda execution role.

This is the role that will be assumed by the function upon execution.
It controls the permissions that the function will have. The Role must
be assumable by the 'lambda.amazonaws.com' service principal.

The default Role automatically has permissions granted for Lambda execution. If you
provide a Role, you must add the relevant AWS managed policies yourself.

The relevant managed policies are "service-role/AWSLambdaBasicExecutionRole" and
"service-role/AWSLambdaVPCAccessExecutionRole".

role

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

runtimeManagementMode

The list of security groups to associate with the Lambda's network interfaces.

Only used if 'vpc' is supplied.

securityGroups

Enable SnapStart for Lambda Function.

SnapStart is currently supported for Java 11, Java 17, Python 3.12, Python 3.13, and .NET 8 runtime

snapStart

Sets the system log level for the function.

systemLogLevel

systemLogLevelV2

The tenancy configuration for the function.

tenancyConfig

The function execution time (in seconds) after which Lambda terminates the function.

Because the execution time affects cost, set this value
based on the function's expected execution time.

timeout

Enable AWS X-Ray Tracing for Lambda Function.

tracing

VPC network to place Lambda network interfaces.

Specify this if the Lambda function needs to access resources in a VPC.
This is required when `vpcSubnets` is specified.

Where to place the network interfaces within the VPC.

This requires `vpc` to be specified in order for interfaces to actually be
placed in the subnets. If `vpc` is not specify, this will raise an error.

Note: Internet access for Lambda Functions requires a NAT Gateway, so picking
public subnets is not allowed (unless `allowPublicSubnet` is set to `true`).

vpcSubnets

The maximum age of a request that Lambda sends to a function for processing.

Minimum: 60 seconds
Maximum: 6 hours

maxEventAge

onFailure

The destination for successful invocations.

onSuccess

The maximum number of times to retry when the function returns an error.

Minimum: 0
Maximum: 2

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