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Provides a Lambda Function resource. Lambda allows you to trigger execution of code in response to events in AWS, enabling serverless backend solutions. The Lambda Function itself includes source code and runtime configuration.

For information about Lambda and how to use it, see What is AWS Lambda?

NOTE: Due to AWS Lambda improved VPC networking changes that began deploying in September 2019, EC2 subnets and security groups associated with Lambda Functions can take up to 45 minutes to successfully delete.

NOTE: If you get a KMSAccessDeniedException: Lambda was unable to decrypt the environment variables because KMS access was denied error when invoking an aws.lambda.Function with environment variables, the IAM role associated with the function may have been deleted and recreated after the function was created. You can fix the problem two ways: 1) updating the function's role to another role and then updating it back again to the recreated role, or 2) by using Pulumi to taint the function and apply your configuration again to recreate the function. (When you create a function, Lambda grants permissions on the KMS key to the function's IAM role. If the IAM role is recreated, the grant is no longer valid. Changing the function's role or recreating the function causes Lambda to update the grant.)

To give an external source (like an EventBridge Rule, SNS, or S3) permission to access the Lambda function, use the aws.lambda.Permission resource. See Lambda Permission Model for more details. On the other hand, the role argument of this resource is the function's execution role for identity and access to AWS services and resources.

Example Usage

Basic Example

import * as pulumi from "@pulumi/pulumi";
import * as archive from "@pulumi/archive";
import * as aws from "@pulumi/aws";

const assumeRole = aws.iam.getPolicyDocument({
    statements: [{
        effect: "Allow",
        principals: [{
            type: "Service",
            identifiers: ["lambda.amazonaws.com"],
        }],
        actions: ["sts:AssumeRole"],
    }],
});
const iamForLambda = new aws.iam.Role("iamForLambda", {assumeRolePolicy: assumeRole.then(assumeRole => assumeRole.json)});
const lambda = archive.getFile({
    type: "zip",
    sourceFile: "lambda.js",
    outputPath: "lambda_function_payload.zip",
});
const testLambda = new aws.lambda.Function("testLambda", {
    code: new pulumi.asset.FileArchive("lambda_function_payload.zip"),
    role: iamForLambda.arn,
    handler: "index.test",
    runtime: "nodejs18.x",
    environment: {
        variables: {
            foo: "bar",
        },
    },
});

import pulumi
import pulumi_archive as archive
import pulumi_aws as aws

assume_role = aws.iam.get_policy_document(statements=[aws.iam.GetPolicyDocumentStatementArgs(
    effect="Allow",
    principals=[aws.iam.GetPolicyDocumentStatementPrincipalArgs(
        type="Service",
        identifiers=["lambda.amazonaws.com"],
    )],
    actions=["sts:AssumeRole"],
)])
iam_for_lambda = aws.iam.Role("iamForLambda", assume_role_policy=assume_role.json)
lambda_ = archive.get_file(type="zip",
    source_file="lambda.js",
    output_path="lambda_function_payload.zip")
test_lambda = aws.lambda_.Function("testLambda",
    code=pulumi.FileArchive("lambda_function_payload.zip"),
    role=iam_for_lambda.arn,
    handler="index.test",
    runtime="nodejs18.x",
    environment=aws.lambda_.FunctionEnvironmentArgs(
        variables={
            "foo": "bar",
        },
    ))

using System.Collections.Generic;
using System.Linq;
using Pulumi;
using Archive = Pulumi.Archive;
using Aws = Pulumi.Aws;

return await Deployment.RunAsync(() => 
{
    var assumeRole = Aws.Iam.GetPolicyDocument.Invoke(new()
    {
        Statements = new[]
        {
            new Aws.Iam.Inputs.GetPolicyDocumentStatementInputArgs
            {
                Effect = "Allow",
                Principals = new[]
                {
                    new Aws.Iam.Inputs.GetPolicyDocumentStatementPrincipalInputArgs
                    {
                        Type = "Service",
                        Identifiers = new[]
                        {
                            "lambda.amazonaws.com",
                        },
                    },
                },
                Actions = new[]
                {
                    "sts:AssumeRole",
                },
            },
        },
    });

    var iamForLambda = new Aws.Iam.Role("iamForLambda", new()
    {
        AssumeRolePolicy = assumeRole.Apply(getPolicyDocumentResult => getPolicyDocumentResult.Json),
    });

    var lambda = Archive.GetFile.Invoke(new()
    {
        Type = "zip",
        SourceFile = "lambda.js",
        OutputPath = "lambda_function_payload.zip",
    });

    var testLambda = new Aws.Lambda.Function("testLambda", new()
    {
        Code = new FileArchive("lambda_function_payload.zip"),
        Role = iamForLambda.Arn,
        Handler = "index.test",
        Runtime = "nodejs18.x",
        Environment = new Aws.Lambda.Inputs.FunctionEnvironmentArgs
        {
            Variables = 
            {
                { "foo", "bar" },
            },
        },
    });

});

package main

import (
	"github.com/pulumi/pulumi-archive/sdk/go/archive"
	"github.com/pulumi/pulumi-aws/sdk/v6/go/aws/iam"
	"github.com/pulumi/pulumi-aws/sdk/v6/go/aws/lambda"
	"github.com/pulumi/pulumi/sdk/v3/go/pulumi"
)

func main() {
	pulumi.Run(func(ctx *pulumi.Context) error {
		assumeRole, err := iam.GetPolicyDocument(ctx, &iam.GetPolicyDocumentArgs{
			Statements: []iam.GetPolicyDocumentStatement{
				{
					Effect: pulumi.StringRef("Allow"),
					Principals: []iam.GetPolicyDocumentStatementPrincipal{
						{
							Type: "Service",
							Identifiers: []string{
								"lambda.amazonaws.com",
							},
						},
					},
					Actions: []string{
						"sts:AssumeRole",
					},
				},
			},
		}, nil)
		if err != nil {
			return err
		}
		iamForLambda, err := iam.NewRole(ctx, "iamForLambda", &iam.RoleArgs{
			AssumeRolePolicy: *pulumi.String(assumeRole.Json),
		})
		if err != nil {
			return err
		}
		_, err = archive.LookupFile(ctx, &archive.LookupFileArgs{
			Type:       "zip",
			SourceFile: pulumi.StringRef("lambda.js"),
			OutputPath: "lambda_function_payload.zip",
		}, nil)
		if err != nil {
			return err
		}
		_, err = lambda.NewFunction(ctx, "testLambda", &lambda.FunctionArgs{
			Code:    pulumi.NewFileArchive("lambda_function_payload.zip"),
			Role:    iamForLambda.Arn,
			Handler: pulumi.String("index.test"),
			Runtime: pulumi.String("nodejs18.x"),
			Environment: &lambda.FunctionEnvironmentArgs{
				Variables: pulumi.StringMap{
					"foo": pulumi.String("bar"),
				},
			},
		})
		if err != nil {
			return err
		}
		return nil
	})
}

package generated_program;

import com.pulumi.Context;
import com.pulumi.Pulumi;
import com.pulumi.core.Output;
import com.pulumi.aws.iam.IamFunctions;
import com.pulumi.aws.iam.inputs.GetPolicyDocumentArgs;
import com.pulumi.aws.iam.Role;
import com.pulumi.aws.iam.RoleArgs;
import com.pulumi.archive.ArchiveFunctions;
import com.pulumi.archive.inputs.GetFileArgs;
import com.pulumi.aws.lambda.Function;
import com.pulumi.aws.lambda.FunctionArgs;
import com.pulumi.aws.lambda.inputs.FunctionEnvironmentArgs;
import com.pulumi.asset.FileArchive;
import java.util.List;
import java.util.ArrayList;
import java.util.Map;
import java.io.File;
import java.nio.file.Files;
import java.nio.file.Paths;

public class App {
    public static void main(String[] args) {
        Pulumi.run(App::stack);
    }

    public static void stack(Context ctx) {
        final var assumeRole = IamFunctions.getPolicyDocument(GetPolicyDocumentArgs.builder()
            .statements(GetPolicyDocumentStatementArgs.builder()
                .effect("Allow")
                .principals(GetPolicyDocumentStatementPrincipalArgs.builder()
                    .type("Service")
                    .identifiers("lambda.amazonaws.com")
                    .build())
                .actions("sts:AssumeRole")
                .build())
            .build());

        var iamForLambda = new Role("iamForLambda", RoleArgs.builder()        
            .assumeRolePolicy(assumeRole.applyValue(getPolicyDocumentResult -> getPolicyDocumentResult.json()))
            .build());

        final var lambda = ArchiveFunctions.getFile(GetFileArgs.builder()
            .type("zip")
            .sourceFile("lambda.js")
            .outputPath("lambda_function_payload.zip")
            .build());

        var testLambda = new Function("testLambda", FunctionArgs.builder()        
            .code(new FileArchive("lambda_function_payload.zip"))
            .role(iamForLambda.arn())
            .handler("index.test")
            .runtime("nodejs18.x")
            .environment(FunctionEnvironmentArgs.builder()
                .variables(Map.of("foo", "bar"))
                .build())
            .build());

    }
}

resources:
  iamForLambda:
    type: aws:iam:Role
    properties:
      assumeRolePolicy: ${assumeRole.json}
  testLambda:
    type: aws:lambda:Function
    properties:
      # If the file is not in the current working directory you will need to include a
      #   # path.module in the filename.
      code:
        fn::FileArchive: lambda_function_payload.zip
      role: ${iamForLambda.arn}
      handler: index.test
      runtime: nodejs18.x
      environment:
        variables:
          foo: bar
variables:
  assumeRole:
    fn::invoke:
      Function: aws:iam:getPolicyDocument
      Arguments:
        statements:
          - effect: Allow
            principals:
              - type: Service
                identifiers:
                  - lambda.amazonaws.com
            actions:
              - sts:AssumeRole
  lambda:
    fn::invoke:
      Function: archive:getFile
      Arguments:
        type: zip
        sourceFile: lambda.js
        outputPath: lambda_function_payload.zip

Lambda Layers

import * as pulumi from "@pulumi/pulumi";
import * as aws from "@pulumi/aws";

const exampleLayerVersion = new aws.lambda.LayerVersion("exampleLayerVersion", {});
// ... other configuration ...
const exampleFunction = new aws.lambda.Function("exampleFunction", {layers: [exampleLayerVersion.arn]});

import pulumi
import pulumi_aws as aws

example_layer_version = aws.lambda_.LayerVersion("exampleLayerVersion")
# ... other configuration ...
example_function = aws.lambda_.Function("exampleFunction", layers=[example_layer_version.arn])

using System.Collections.Generic;
using System.Linq;
using Pulumi;
using Aws = Pulumi.Aws;

return await Deployment.RunAsync(() => 
{
    var exampleLayerVersion = new Aws.Lambda.LayerVersion("exampleLayerVersion");

    // ... other configuration ...
    var exampleFunction = new Aws.Lambda.Function("exampleFunction", new()
    {
        Layers = new[]
        {
            exampleLayerVersion.Arn,
        },
    });

});

package main

import (
	"github.com/pulumi/pulumi-aws/sdk/v6/go/aws/lambda"
	"github.com/pulumi/pulumi/sdk/v3/go/pulumi"
)

func main() {
	pulumi.Run(func(ctx *pulumi.Context) error {
		exampleLayerVersion, err := lambda.NewLayerVersion(ctx, "exampleLayerVersion", nil)
		if err != nil {
			return err
		}
		_, err = lambda.NewFunction(ctx, "exampleFunction", &lambda.FunctionArgs{
			Layers: pulumi.StringArray{
				exampleLayerVersion.Arn,
			},
		})
		if err != nil {
			return err
		}
		return nil
	})
}

package generated_program;

import com.pulumi.Context;
import com.pulumi.Pulumi;
import com.pulumi.core.Output;
import com.pulumi.aws.lambda.LayerVersion;
import com.pulumi.aws.lambda.Function;
import com.pulumi.aws.lambda.FunctionArgs;
import java.util.List;
import java.util.ArrayList;
import java.util.Map;
import java.io.File;
import java.nio.file.Files;
import java.nio.file.Paths;

public class App {
    public static void main(String[] args) {
        Pulumi.run(App::stack);
    }

    public static void stack(Context ctx) {
        var exampleLayerVersion = new LayerVersion("exampleLayerVersion");

        var exampleFunction = new Function("exampleFunction", FunctionArgs.builder()        
            .layers(exampleLayerVersion.arn())
            .build());

    }
}

resources:
  exampleLayerVersion:
    type: aws:lambda:LayerVersion
  exampleFunction:
    type: aws:lambda:Function
    properties:
      # ... other configuration ...
      layers:
        - ${exampleLayerVersion.arn}

Lambda Ephemeral Storage

Lambda Function Ephemeral Storage(/tmp) allows you to configure the storage upto 10 GB. The default value set to 512 MB.

import * as pulumi from "@pulumi/pulumi";
import * as aws from "@pulumi/aws";

const assumeRole = aws.iam.getPolicyDocument({
    statements: [{
        effect: "Allow",
        principals: [{
            type: "Service",
            identifiers: ["lambda.amazonaws.com"],
        }],
        actions: ["sts:AssumeRole"],
    }],
});
const iamForLambda = new aws.iam.Role("iamForLambda", {assumeRolePolicy: assumeRole.then(assumeRole => assumeRole.json)});
const testLambda = new aws.lambda.Function("testLambda", {
    code: new pulumi.asset.FileArchive("lambda_function_payload.zip"),
    role: iamForLambda.arn,
    handler: "index.test",
    runtime: "nodejs18.x",
    ephemeralStorage: {
        size: 10240,
    },
});

import pulumi
import pulumi_aws as aws

assume_role = aws.iam.get_policy_document(statements=[aws.iam.GetPolicyDocumentStatementArgs(
    effect="Allow",
    principals=[aws.iam.GetPolicyDocumentStatementPrincipalArgs(
        type="Service",
        identifiers=["lambda.amazonaws.com"],
    )],
    actions=["sts:AssumeRole"],
)])
iam_for_lambda = aws.iam.Role("iamForLambda", assume_role_policy=assume_role.json)
test_lambda = aws.lambda_.Function("testLambda",
    code=pulumi.FileArchive("lambda_function_payload.zip"),
    role=iam_for_lambda.arn,
    handler="index.test",
    runtime="nodejs18.x",
    ephemeral_storage=aws.lambda_.FunctionEphemeralStorageArgs(
        size=10240,
    ))

using System.Collections.Generic;
using System.Linq;
using Pulumi;
using Aws = Pulumi.Aws;

return await Deployment.RunAsync(() => 
{
    var assumeRole = Aws.Iam.GetPolicyDocument.Invoke(new()
    {
        Statements = new[]
        {
            new Aws.Iam.Inputs.GetPolicyDocumentStatementInputArgs
            {
                Effect = "Allow",
                Principals = new[]
                {
                    new Aws.Iam.Inputs.GetPolicyDocumentStatementPrincipalInputArgs
                    {
                        Type = "Service",
                        Identifiers = new[]
                        {
                            "lambda.amazonaws.com",
                        },
                    },
                },
                Actions = new[]
                {
                    "sts:AssumeRole",
                },
            },
        },
    });

    var iamForLambda = new Aws.Iam.Role("iamForLambda", new()
    {
        AssumeRolePolicy = assumeRole.Apply(getPolicyDocumentResult => getPolicyDocumentResult.Json),
    });

    var testLambda = new Aws.Lambda.Function("testLambda", new()
    {
        Code = new FileArchive("lambda_function_payload.zip"),
        Role = iamForLambda.Arn,
        Handler = "index.test",
        Runtime = "nodejs18.x",
        EphemeralStorage = new Aws.Lambda.Inputs.FunctionEphemeralStorageArgs
        {
            Size = 10240,
        },
    });

});

package main

import (
	"github.com/pulumi/pulumi-aws/sdk/v6/go/aws/iam"
	"github.com/pulumi/pulumi-aws/sdk/v6/go/aws/lambda"
	"github.com/pulumi/pulumi/sdk/v3/go/pulumi"
)

func main() {
	pulumi.Run(func(ctx *pulumi.Context) error {
		assumeRole, err := iam.GetPolicyDocument(ctx, &iam.GetPolicyDocumentArgs{
			Statements: []iam.GetPolicyDocumentStatement{
				{
					Effect: pulumi.StringRef("Allow"),
					Principals: []iam.GetPolicyDocumentStatementPrincipal{
						{
							Type: "Service",
							Identifiers: []string{
								"lambda.amazonaws.com",
							},
						},
					},
					Actions: []string{
						"sts:AssumeRole",
					},
				},
			},
		}, nil)
		if err != nil {
			return err
		}
		iamForLambda, err := iam.NewRole(ctx, "iamForLambda", &iam.RoleArgs{
			AssumeRolePolicy: *pulumi.String(assumeRole.Json),
		})
		if err != nil {
			return err
		}
		_, err = lambda.NewFunction(ctx, "testLambda", &lambda.FunctionArgs{
			Code:    pulumi.NewFileArchive("lambda_function_payload.zip"),
			Role:    iamForLambda.Arn,
			Handler: pulumi.String("index.test"),
			Runtime: pulumi.String("nodejs18.x"),
			EphemeralStorage: &lambda.FunctionEphemeralStorageArgs{
				Size: pulumi.Int(10240),
			},
		})
		if err != nil {
			return err
		}
		return nil
	})
}

package generated_program;

import com.pulumi.Context;
import com.pulumi.Pulumi;
import com.pulumi.core.Output;
import com.pulumi.aws.iam.IamFunctions;
import com.pulumi.aws.iam.inputs.GetPolicyDocumentArgs;
import com.pulumi.aws.iam.Role;
import com.pulumi.aws.iam.RoleArgs;
import com.pulumi.aws.lambda.Function;
import com.pulumi.aws.lambda.FunctionArgs;
import com.pulumi.aws.lambda.inputs.FunctionEphemeralStorageArgs;
import com.pulumi.asset.FileArchive;
import java.util.List;
import java.util.ArrayList;
import java.util.Map;
import java.io.File;
import java.nio.file.Files;
import java.nio.file.Paths;

public class App {
    public static void main(String[] args) {
        Pulumi.run(App::stack);
    }

    public static void stack(Context ctx) {
        final var assumeRole = IamFunctions.getPolicyDocument(GetPolicyDocumentArgs.builder()
            .statements(GetPolicyDocumentStatementArgs.builder()
                .effect("Allow")
                .principals(GetPolicyDocumentStatementPrincipalArgs.builder()
                    .type("Service")
                    .identifiers("lambda.amazonaws.com")
                    .build())
                .actions("sts:AssumeRole")
                .build())
            .build());

        var iamForLambda = new Role("iamForLambda", RoleArgs.builder()        
            .assumeRolePolicy(assumeRole.applyValue(getPolicyDocumentResult -> getPolicyDocumentResult.json()))
            .build());

        var testLambda = new Function("testLambda", FunctionArgs.builder()        
            .code(new FileArchive("lambda_function_payload.zip"))
            .role(iamForLambda.arn())
            .handler("index.test")
            .runtime("nodejs18.x")
            .ephemeralStorage(FunctionEphemeralStorageArgs.builder()
                .size(10240)
                .build())
            .build());

    }
}

resources:
  iamForLambda:
    type: aws:iam:Role
    properties:
      assumeRolePolicy: ${assumeRole.json}
  testLambda:
    type: aws:lambda:Function
    properties:
      code:
        fn::FileArchive: lambda_function_payload.zip
      role: ${iamForLambda.arn}
      handler: index.test
      runtime: nodejs18.x
      ephemeralStorage:
        size: 10240
variables:
  assumeRole:
    fn::invoke:
      Function: aws:iam:getPolicyDocument
      Arguments:
        statements:
          - effect: Allow
            principals:
              - type: Service
                identifiers:
                  - lambda.amazonaws.com
            actions:
              - sts:AssumeRole

Lambda File Systems

Lambda File Systems allow you to connect an Amazon Elastic File System (EFS) file system to a Lambda function to share data across function invocations, access existing data including large files, and save function state.

import * as pulumi from "@pulumi/pulumi";
import * as aws from "@pulumi/aws";

// EFS file system
const efsForLambda = new aws.efs.FileSystem("efsForLambda", {tags: {
    Name: "efs_for_lambda",
}});
// Mount target connects the file system to the subnet
const alpha = new aws.efs.MountTarget("alpha", {
    fileSystemId: efsForLambda.id,
    subnetId: aws_subnet.subnet_for_lambda.id,
    securityGroups: [aws_security_group.sg_for_lambda.id],
});
// EFS access point used by lambda file system
const accessPointForLambda = new aws.efs.AccessPoint("accessPointForLambda", {
    fileSystemId: efsForLambda.id,
    rootDirectory: {
        path: "/lambda",
        creationInfo: {
            ownerGid: 1000,
            ownerUid: 1000,
            permissions: "777",
        },
    },
    posixUser: {
        gid: 1000,
        uid: 1000,
    },
});
// A lambda function connected to an EFS file system
// ... other configuration ...
const example = new aws.lambda.Function("example", {
    fileSystemConfig: {
        arn: accessPointForLambda.arn,
        localMountPath: "/mnt/efs",
    },
    vpcConfig: {
        subnetIds: [aws_subnet.subnet_for_lambda.id],
        securityGroupIds: [aws_security_group.sg_for_lambda.id],
    },
}, {
    dependsOn: [alpha],
});

import pulumi
import pulumi_aws as aws

# EFS file system
efs_for_lambda = aws.efs.FileSystem("efsForLambda", tags={
    "Name": "efs_for_lambda",
})
# Mount target connects the file system to the subnet
alpha = aws.efs.MountTarget("alpha",
    file_system_id=efs_for_lambda.id,
    subnet_id=aws_subnet["subnet_for_lambda"]["id"],
    security_groups=[aws_security_group["sg_for_lambda"]["id"]])
# EFS access point used by lambda file system
access_point_for_lambda = aws.efs.AccessPoint("accessPointForLambda",
    file_system_id=efs_for_lambda.id,
    root_directory=aws.efs.AccessPointRootDirectoryArgs(
        path="/lambda",
        creation_info=aws.efs.AccessPointRootDirectoryCreationInfoArgs(
            owner_gid=1000,
            owner_uid=1000,
            permissions="777",
        ),
    ),
    posix_user=aws.efs.AccessPointPosixUserArgs(
        gid=1000,
        uid=1000,
    ))
# A lambda function connected to an EFS file system
# ... other configuration ...
example = aws.lambda_.Function("example",
    file_system_config=aws.lambda_.FunctionFileSystemConfigArgs(
        arn=access_point_for_lambda.arn,
        local_mount_path="/mnt/efs",
    ),
    vpc_config=aws.lambda_.FunctionVpcConfigArgs(
        subnet_ids=[aws_subnet["subnet_for_lambda"]["id"]],
        security_group_ids=[aws_security_group["sg_for_lambda"]["id"]],
    ),
    opts=pulumi.ResourceOptions(depends_on=[alpha]))

using System.Collections.Generic;
using System.Linq;
using Pulumi;
using Aws = Pulumi.Aws;

return await Deployment.RunAsync(() => 
{
    // EFS file system
    var efsForLambda = new Aws.Efs.FileSystem("efsForLambda", new()
    {
        Tags = 
        {
            { "Name", "efs_for_lambda" },
        },
    });

    // Mount target connects the file system to the subnet
    var alpha = new Aws.Efs.MountTarget("alpha", new()
    {
        FileSystemId = efsForLambda.Id,
        SubnetId = aws_subnet.Subnet_for_lambda.Id,
        SecurityGroups = new[]
        {
            aws_security_group.Sg_for_lambda.Id,
        },
    });

    // EFS access point used by lambda file system
    var accessPointForLambda = new Aws.Efs.AccessPoint("accessPointForLambda", new()
    {
        FileSystemId = efsForLambda.Id,
        RootDirectory = new Aws.Efs.Inputs.AccessPointRootDirectoryArgs
        {
            Path = "/lambda",
            CreationInfo = new Aws.Efs.Inputs.AccessPointRootDirectoryCreationInfoArgs
            {
                OwnerGid = 1000,
                OwnerUid = 1000,
                Permissions = "777",
            },
        },
        PosixUser = new Aws.Efs.Inputs.AccessPointPosixUserArgs
        {
            Gid = 1000,
            Uid = 1000,
        },
    });

    // A lambda function connected to an EFS file system
    // ... other configuration ...
    var example = new Aws.Lambda.Function("example", new()
    {
        FileSystemConfig = new Aws.Lambda.Inputs.FunctionFileSystemConfigArgs
        {
            Arn = accessPointForLambda.Arn,
            LocalMountPath = "/mnt/efs",
        },
        VpcConfig = new Aws.Lambda.Inputs.FunctionVpcConfigArgs
        {
            SubnetIds = new[]
            {
                aws_subnet.Subnet_for_lambda.Id,
            },
            SecurityGroupIds = new[]
            {
                aws_security_group.Sg_for_lambda.Id,
            },
        },
    }, new CustomResourceOptions
    {
        DependsOn = new[]
        {
            alpha,
        },
    });

});

package main

import (
	"github.com/pulumi/pulumi-aws/sdk/v6/go/aws/efs"
	"github.com/pulumi/pulumi-aws/sdk/v6/go/aws/lambda"
	"github.com/pulumi/pulumi/sdk/v3/go/pulumi"
)

func main() {
	pulumi.Run(func(ctx *pulumi.Context) error {
		efsForLambda, err := efs.NewFileSystem(ctx, "efsForLambda", &efs.FileSystemArgs{
			Tags: pulumi.StringMap{
				"Name": pulumi.String("efs_for_lambda"),
			},
		})
		if err != nil {
			return err
		}
		alpha, err := efs.NewMountTarget(ctx, "alpha", &efs.MountTargetArgs{
			FileSystemId: efsForLambda.ID(),
			SubnetId:     pulumi.Any(aws_subnet.Subnet_for_lambda.Id),
			SecurityGroups: pulumi.StringArray{
				aws_security_group.Sg_for_lambda.Id,
			},
		})
		if err != nil {
			return err
		}
		accessPointForLambda, err := efs.NewAccessPoint(ctx, "accessPointForLambda", &efs.AccessPointArgs{
			FileSystemId: efsForLambda.ID(),
			RootDirectory: &efs.AccessPointRootDirectoryArgs{
				Path: pulumi.String("/lambda"),
				CreationInfo: &efs.AccessPointRootDirectoryCreationInfoArgs{
					OwnerGid:    pulumi.Int(1000),
					OwnerUid:    pulumi.Int(1000),
					Permissions: pulumi.String("777"),
				},
			},
			PosixUser: &efs.AccessPointPosixUserArgs{
				Gid: pulumi.Int(1000),
				Uid: pulumi.Int(1000),
			},
		})
		if err != nil {
			return err
		}
		_, err = lambda.NewFunction(ctx, "example", &lambda.FunctionArgs{
			FileSystemConfig: &lambda.FunctionFileSystemConfigArgs{
				Arn:            accessPointForLambda.Arn,
				LocalMountPath: pulumi.String("/mnt/efs"),
			},
			VpcConfig: &lambda.FunctionVpcConfigArgs{
				SubnetIds: pulumi.StringArray{
					aws_subnet.Subnet_for_lambda.Id,
				},
				SecurityGroupIds: pulumi.StringArray{
					aws_security_group.Sg_for_lambda.Id,
				},
			},
		}, pulumi.DependsOn([]pulumi.Resource{
			alpha,
		}))
		if err != nil {
			return err
		}
		return nil
	})
}

package generated_program;

import com.pulumi.Context;
import com.pulumi.Pulumi;
import com.pulumi.core.Output;
import com.pulumi.aws.efs.FileSystem;
import com.pulumi.aws.efs.FileSystemArgs;
import com.pulumi.aws.efs.MountTarget;
import com.pulumi.aws.efs.MountTargetArgs;
import com.pulumi.aws.efs.AccessPoint;
import com.pulumi.aws.efs.AccessPointArgs;
import com.pulumi.aws.efs.inputs.AccessPointRootDirectoryArgs;
import com.pulumi.aws.efs.inputs.AccessPointRootDirectoryCreationInfoArgs;
import com.pulumi.aws.efs.inputs.AccessPointPosixUserArgs;
import com.pulumi.aws.lambda.Function;
import com.pulumi.aws.lambda.FunctionArgs;
import com.pulumi.aws.lambda.inputs.FunctionFileSystemConfigArgs;
import com.pulumi.aws.lambda.inputs.FunctionVpcConfigArgs;
import com.pulumi.resources.CustomResourceOptions;
import java.util.List;
import java.util.ArrayList;
import java.util.Map;
import java.io.File;
import java.nio.file.Files;
import java.nio.file.Paths;

public class App {
    public static void main(String[] args) {
        Pulumi.run(App::stack);
    }

    public static void stack(Context ctx) {
        var efsForLambda = new FileSystem("efsForLambda", FileSystemArgs.builder()        
            .tags(Map.of("Name", "efs_for_lambda"))
            .build());

        var alpha = new MountTarget("alpha", MountTargetArgs.builder()        
            .fileSystemId(efsForLambda.id())
            .subnetId(aws_subnet.subnet_for_lambda().id())
            .securityGroups(aws_security_group.sg_for_lambda().id())
            .build());

        var accessPointForLambda = new AccessPoint("accessPointForLambda", AccessPointArgs.builder()        
            .fileSystemId(efsForLambda.id())
            .rootDirectory(AccessPointRootDirectoryArgs.builder()
                .path("/lambda")
                .creationInfo(AccessPointRootDirectoryCreationInfoArgs.builder()
                    .ownerGid(1000)
                    .ownerUid(1000)
                    .permissions("777")
                    .build())
                .build())
            .posixUser(AccessPointPosixUserArgs.builder()
                .gid(1000)
                .uid(1000)
                .build())
            .build());

        var example = new Function("example", FunctionArgs.builder()        
            .fileSystemConfig(FunctionFileSystemConfigArgs.builder()
                .arn(accessPointForLambda.arn())
                .localMountPath("/mnt/efs")
                .build())
            .vpcConfig(FunctionVpcConfigArgs.builder()
                .subnetIds(aws_subnet.subnet_for_lambda().id())
                .securityGroupIds(aws_security_group.sg_for_lambda().id())
                .build())
            .build(), CustomResourceOptions.builder()
                .dependsOn(alpha)
                .build());

    }
}

resources:
  # A lambda function connected to an EFS file system
  example:
    type: aws:lambda:Function
    properties:
      fileSystemConfig:
        arn: ${accessPointForLambda.arn}
        localMountPath: /mnt/efs
      vpcConfig:
        subnetIds:
          - ${aws_subnet.subnet_for_lambda.id}
        securityGroupIds:
          - ${aws_security_group.sg_for_lambda.id}
    options:
      dependson:
        - ${alpha}
  # EFS file system
  efsForLambda:
    type: aws:efs:FileSystem
    properties:
      tags:
        Name: efs_for_lambda
  # Mount target connects the file system to the subnet
  alpha:
    type: aws:efs:MountTarget
    properties:
      fileSystemId: ${efsForLambda.id}
      subnetId: ${aws_subnet.subnet_for_lambda.id}
      securityGroups:
        - ${aws_security_group.sg_for_lambda.id}
  # EFS access point used by lambda file system
  accessPointForLambda:
    type: aws:efs:AccessPoint
    properties:
      fileSystemId: ${efsForLambda.id}
      rootDirectory:
        path: /lambda
        creationInfo:
          ownerGid: 1000
          ownerUid: 1000
          permissions: '777'
      posixUser:
        gid: 1000
        uid: 1000

Lambda retries

Lambda Functions allow you to configure error handling for asynchronous invocation. The settings that it supports are Maximum age of event and Retry attempts as stated in Lambda documentation for Configuring error handling for asynchronous invocation. To configure these settings, refer to the aws.lambda.FunctionEventInvokeConfig resource.

CloudWatch Logging and Permissions

For more information about CloudWatch Logs for Lambda, see the Lambda User Guide.

import * as pulumi from "@pulumi/pulumi";
import * as aws from "@pulumi/aws";

const config = new pulumi.Config();
const lambdaFunctionName = config.get("lambdaFunctionName") || "lambda_function_name";
// This is to optionally manage the CloudWatch Log Group for the Lambda Function.
// If skipping this resource configuration, also add "logs:CreateLogGroup" to the IAM policy below.
const example = new aws.cloudwatch.LogGroup("example", {retentionInDays: 14});
const lambdaLoggingPolicyDocument = aws.iam.getPolicyDocument({
    statements: [{
        effect: "Allow",
        actions: [
            "logs:CreateLogGroup",
            "logs:CreateLogStream",
            "logs:PutLogEvents",
        ],
        resources: ["arn:aws:logs:*:*:*"],
    }],
});
const lambdaLoggingPolicy = new aws.iam.Policy("lambdaLoggingPolicy", {
    path: "/",
    description: "IAM policy for logging from a lambda",
    policy: lambdaLoggingPolicyDocument.then(lambdaLoggingPolicyDocument => lambdaLoggingPolicyDocument.json),
});
const lambdaLogs = new aws.iam.RolePolicyAttachment("lambdaLogs", {
    role: aws_iam_role.iam_for_lambda.name,
    policyArn: lambdaLoggingPolicy.arn,
});
const testLambda = new aws.lambda.Function("testLambda", {loggingConfig: {
    logFormat: "Text",
}}, {
    dependsOn: [
        lambdaLogs,
        example,
    ],
});

import pulumi
import pulumi_aws as aws

config = pulumi.Config()
lambda_function_name = config.get("lambdaFunctionName")
if lambda_function_name is None:
    lambda_function_name = "lambda_function_name"
# This is to optionally manage the CloudWatch Log Group for the Lambda Function.
# If skipping this resource configuration, also add "logs:CreateLogGroup" to the IAM policy below.
example = aws.cloudwatch.LogGroup("example", retention_in_days=14)
lambda_logging_policy_document = aws.iam.get_policy_document(statements=[aws.iam.GetPolicyDocumentStatementArgs(
    effect="Allow",
    actions=[
        "logs:CreateLogGroup",
        "logs:CreateLogStream",
        "logs:PutLogEvents",
    ],
    resources=["arn:aws:logs:*:*:*"],
)])
lambda_logging_policy = aws.iam.Policy("lambdaLoggingPolicy",
    path="/",
    description="IAM policy for logging from a lambda",
    policy=lambda_logging_policy_document.json)
lambda_logs = aws.iam.RolePolicyAttachment("lambdaLogs",
    role=aws_iam_role["iam_for_lambda"]["name"],
    policy_arn=lambda_logging_policy.arn)
test_lambda = aws.lambda_.Function("testLambda", logging_config=aws.lambda_.FunctionLoggingConfigArgs(
    log_format="Text",
),
opts=pulumi.ResourceOptions(depends_on=[
        lambda_logs,
        example,
    ]))

using System.Collections.Generic;
using System.Linq;
using Pulumi;
using Aws = Pulumi.Aws;

return await Deployment.RunAsync(() => 
{
    var config = new Config();
    var lambdaFunctionName = config.Get("lambdaFunctionName") ?? "lambda_function_name";
    // This is to optionally manage the CloudWatch Log Group for the Lambda Function.
    // If skipping this resource configuration, also add "logs:CreateLogGroup" to the IAM policy below.
    var example = new Aws.CloudWatch.LogGroup("example", new()
    {
        RetentionInDays = 14,
    });

    var lambdaLoggingPolicyDocument = Aws.Iam.GetPolicyDocument.Invoke(new()
    {
        Statements = new[]
        {
            new Aws.Iam.Inputs.GetPolicyDocumentStatementInputArgs
            {
                Effect = "Allow",
                Actions = new[]
                {
                    "logs:CreateLogGroup",
                    "logs:CreateLogStream",
                    "logs:PutLogEvents",
                },
                Resources = new[]
                {
                    "arn:aws:logs:*:*:*",
                },
            },
        },
    });

    var lambdaLoggingPolicy = new Aws.Iam.Policy("lambdaLoggingPolicy", new()
    {
        Path = "/",
        Description = "IAM policy for logging from a lambda",
        PolicyDocument = lambdaLoggingPolicyDocument.Apply(getPolicyDocumentResult => getPolicyDocumentResult.Json),
    });

    var lambdaLogs = new Aws.Iam.RolePolicyAttachment("lambdaLogs", new()
    {
        Role = aws_iam_role.Iam_for_lambda.Name,
        PolicyArn = lambdaLoggingPolicy.Arn,
    });

    var testLambda = new Aws.Lambda.Function("testLambda", new()
    {
        LoggingConfig = new Aws.Lambda.Inputs.FunctionLoggingConfigArgs
        {
            LogFormat = "Text",
        },
    }, new CustomResourceOptions
    {
        DependsOn = new[]
        {
            lambdaLogs,
            example,
        },
    });

});

package main

import (
	"github.com/pulumi/pulumi-aws/sdk/v6/go/aws/cloudwatch"
	"github.com/pulumi/pulumi-aws/sdk/v6/go/aws/iam"
	"github.com/pulumi/pulumi-aws/sdk/v6/go/aws/lambda"
	"github.com/pulumi/pulumi/sdk/v3/go/pulumi"
	"github.com/pulumi/pulumi/sdk/v3/go/pulumi/config"
)

func main() {
	pulumi.Run(func(ctx *pulumi.Context) error {
		cfg := config.New(ctx, "")
		lambdaFunctionName := "lambda_function_name"
		if param := cfg.Get("lambdaFunctionName"); param != "" {
			lambdaFunctionName = param
		}
		example, err := cloudwatch.NewLogGroup(ctx, "example", &cloudwatch.LogGroupArgs{
			RetentionInDays: pulumi.Int(14),
		})
		if err != nil {
			return err
		}
		lambdaLoggingPolicyDocument, err := iam.GetPolicyDocument(ctx, &iam.GetPolicyDocumentArgs{
			Statements: []iam.GetPolicyDocumentStatement{
				{
					Effect: pulumi.StringRef("Allow"),
					Actions: []string{
						"logs:CreateLogGroup",
						"logs:CreateLogStream",
						"logs:PutLogEvents",
					},
					Resources: []string{
						"arn:aws:logs:*:*:*",
					},
				},
			},
		}, nil)
		if err != nil {
			return err
		}
		lambdaLoggingPolicy, err := iam.NewPolicy(ctx, "lambdaLoggingPolicy", &iam.PolicyArgs{
			Path:        pulumi.String("/"),
			Description: pulumi.String("IAM policy for logging from a lambda"),
			Policy:      *pulumi.String(lambdaLoggingPolicyDocument.Json),
		})
		if err != nil {
			return err
		}
		lambdaLogs, err := iam.NewRolePolicyAttachment(ctx, "lambdaLogs", &iam.RolePolicyAttachmentArgs{
			Role:      pulumi.Any(aws_iam_role.Iam_for_lambda.Name),
			PolicyArn: lambdaLoggingPolicy.Arn,
		})
		if err != nil {
			return err
		}
		_, err = lambda.NewFunction(ctx, "testLambda", &lambda.FunctionArgs{
			LoggingConfig: &lambda.FunctionLoggingConfigArgs{
				LogFormat: pulumi.String("Text"),
			},
		}, pulumi.DependsOn([]pulumi.Resource{
			lambdaLogs,
			example,
		}))
		if err != nil {
			return err
		}
		return nil
	})
}

package generated_program;

import com.pulumi.Context;
import com.pulumi.Pulumi;
import com.pulumi.core.Output;
import com.pulumi.aws.cloudwatch.LogGroup;
import com.pulumi.aws.cloudwatch.LogGroupArgs;
import com.pulumi.aws.iam.IamFunctions;
import com.pulumi.aws.iam.inputs.GetPolicyDocumentArgs;
import com.pulumi.aws.iam.Policy;
import com.pulumi.aws.iam.PolicyArgs;
import com.pulumi.aws.iam.RolePolicyAttachment;
import com.pulumi.aws.iam.RolePolicyAttachmentArgs;
import com.pulumi.aws.lambda.Function;
import com.pulumi.aws.lambda.FunctionArgs;
import com.pulumi.aws.lambda.inputs.FunctionLoggingConfigArgs;
import com.pulumi.resources.CustomResourceOptions;
import java.util.List;
import java.util.ArrayList;
import java.util.Map;
import java.io.File;
import java.nio.file.Files;
import java.nio.file.Paths;

public class App {
    public static void main(String[] args) {
        Pulumi.run(App::stack);
    }

    public static void stack(Context ctx) {
        final var config = ctx.config();
        final var lambdaFunctionName = config.get("lambdaFunctionName").orElse("lambda_function_name");
        var example = new LogGroup("example", LogGroupArgs.builder()        
            .retentionInDays(14)
            .build());

        final var lambdaLoggingPolicyDocument = IamFunctions.getPolicyDocument(GetPolicyDocumentArgs.builder()
            .statements(GetPolicyDocumentStatementArgs.builder()
                .effect("Allow")
                .actions(                
                    "logs:CreateLogGroup",
                    "logs:CreateLogStream",
                    "logs:PutLogEvents")
                .resources("arn:aws:logs:*:*:*")
                .build())
            .build());

        var lambdaLoggingPolicy = new Policy("lambdaLoggingPolicy", PolicyArgs.builder()        
            .path("/")
            .description("IAM policy for logging from a lambda")
            .policy(lambdaLoggingPolicyDocument.applyValue(getPolicyDocumentResult -> getPolicyDocumentResult.json()))
            .build());

        var lambdaLogs = new RolePolicyAttachment("lambdaLogs", RolePolicyAttachmentArgs.builder()        
            .role(aws_iam_role.iam_for_lambda().name())
            .policyArn(lambdaLoggingPolicy.arn())
            .build());

        var testLambda = new Function("testLambda", FunctionArgs.builder()        
            .loggingConfig(FunctionLoggingConfigArgs.builder()
                .logFormat("Text")
                .build())
            .build(), CustomResourceOptions.builder()
                .dependsOn(                
                    lambdaLogs,
                    example)
                .build());

    }
}

configuration:
  lambdaFunctionName:
    type: string
    default: lambda_function_name
resources:
  testLambda:
    type: aws:lambda:Function
    properties:
      loggingConfig:
        logFormat: Text
    options:
      dependson:
        - ${lambdaLogs}
        - ${example}
  # This is to optionally manage the CloudWatch Log Group for the Lambda Function.
  # If skipping this resource configuration, also add "logs:CreateLogGroup" to the IAM policy below.
  example:
    type: aws:cloudwatch:LogGroup
    properties:
      retentionInDays: 14
  lambdaLoggingPolicy:
    type: aws:iam:Policy
    properties:
      path: /
      description: IAM policy for logging from a lambda
      policy: ${lambdaLoggingPolicyDocument.json}
  lambdaLogs:
    type: aws:iam:RolePolicyAttachment
    properties:
      role: ${aws_iam_role.iam_for_lambda.name}
      policyArn: ${lambdaLoggingPolicy.arn}
variables:
  lambdaLoggingPolicyDocument:
    fn::invoke:
      Function: aws:iam:getPolicyDocument
      Arguments:
        statements:
          - effect: Allow
            actions:
              - logs:CreateLogGroup
              - logs:CreateLogStream
              - logs:PutLogEvents
            resources:
              - arn:aws:logs:*:*:*

Specifying the Deployment Package

AWS Lambda expects source code to be provided as a deployment package whose structure varies depending on which runtime is in use. See Runtimes for the valid values of runtime. The expected structure of the deployment package can be found in the AWS Lambda documentation for each runtime.

Once you have created your deployment package you can specify it either directly as a local file (using the filename argument) or indirectly via Amazon S3 (using the s3_bucket, s3_key and s3_object_version arguments). When providing the deployment package via S3 it may be useful to use the aws.s3.BucketObjectv2 resource to upload it.

For larger deployment packages it is recommended by Amazon to upload via S3, since the S3 API has better support for uploading large files efficiently.

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