awscloudfrontorigins

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 Go to latest Published: May 10, 2023 License: Apache-2.0 Imports: 10 Imported by: 0

README

CloudFront Origins for the CDK CloudFront Library

This library contains convenience methods for defining origins for a CloudFront distribution. You can use this library to create origins from S3 buckets, Elastic Load Balancing v2 load balancers, or any other domain name.

S3 Bucket

An S3 bucket can be added as an origin. If the bucket is configured as a website endpoint, the distribution can use S3 redirects and S3 custom error documents.

myBucket := s3.NewBucket(this, jsii.String("myBucket"))
cloudfront.NewDistribution(this, jsii.String("myDist"), &DistributionProps{
	DefaultBehavior: &BehaviorOptions{
		Origin: origins.NewS3Origin(myBucket),
	},
})

The above will treat the bucket differently based on if IBucket.isWebsite is set or not. If the bucket is configured as a website, the bucket is treated as an HTTP origin, and the built-in S3 redirects and error pages can be used. Otherwise, the bucket is handled as a bucket origin and CloudFront's redirect and error handling will be used. In the latter case, the Origin will create an origin access identity and grant it access to the underlying bucket. This can be used in conjunction with a bucket that is not public to require that your users access your content using CloudFront URLs and not S3 URLs directly. Alternatively, a custom origin access identity can be passed to the S3 origin in the properties.

Adding Custom Headers

You can configure CloudFront to add custom headers to the requests that it sends to your origin. These custom headers enable you to send and gather information from your origin that you don’t get with typical viewer requests. These headers can even be customized for each origin. CloudFront supports custom headers for both for custom and Amazon S3 origins.

myBucket := s3.NewBucket(this, jsii.String("myBucket"))
cloudfront.NewDistribution(this, jsii.String("myDist"), &DistributionProps{
	DefaultBehavior: &BehaviorOptions{
		Origin: origins.NewS3Origin(myBucket, &S3OriginProps{
			CustomHeaders: map[string]*string{
				"Foo": jsii.String("bar"),
			},
		}),
	},
})

ELBv2 Load Balancer

An Elastic Load Balancing (ELB) v2 load balancer may be used as an origin. In order for a load balancer to serve as an origin, it must be publicly accessible (internetFacing is true). Both Application and Network load balancers are supported.

import ec2 "github.com/aws/aws-cdk-go/awscdk"
import elbv2 "github.com/aws/aws-cdk-go/awscdk"

var vpc vpc

// Create an application load balancer in a VPC. 'internetFacing' must be 'true'
// for CloudFront to access the load balancer and use it as an origin.
lb := elbv2.NewApplicationLoadBalancer(this, jsii.String("LB"), &ApplicationLoadBalancerProps{
	Vpc: Vpc,
	InternetFacing: jsii.Boolean(true),
})
cloudfront.NewDistribution(this, jsii.String("myDist"), &DistributionProps{
	DefaultBehavior: &BehaviorOptions{
		Origin: origins.NewLoadBalancerV2Origin(lb),
	},
})

The origin can also be customized to respond on different ports, have different connection properties, etc.

import elbv2 "github.com/aws/aws-cdk-go/awscdk"

var loadBalancer applicationLoadBalancer

origin := origins.NewLoadBalancerV2Origin(loadBalancer, &LoadBalancerV2OriginProps{
	ConnectionAttempts: jsii.Number(3),
	ConnectionTimeout: awscdk.Duration_Seconds(jsii.Number(5)),
	ReadTimeout: awscdk.Duration_*Seconds(jsii.Number(45)),
	KeepaliveTimeout: awscdk.Duration_*Seconds(jsii.Number(45)),
	ProtocolPolicy: cloudfront.OriginProtocolPolicy_MATCH_VIEWER,
})

Note that the readTimeout and keepaliveTimeout properties can extend their values over 60 seconds only if a limit increase request for CloudFront origin response timeout quota has been approved in the target account; otherwise, values over 60 seconds will produce an error at deploy time. Consider that this value is still limited to a maximum value of 180 seconds, which is a hard limit for that quota.

From an HTTP endpoint

Origins can also be created from any other HTTP endpoint, given the domain name, and optionally, other origin properties.

cloudfront.NewDistribution(this, jsii.String("myDist"), &DistributionProps{
	DefaultBehavior: &BehaviorOptions{
		Origin: origins.NewHttpOrigin(jsii.String("www.example.com")),
	},
})

See the documentation of @aws-cdk/aws-cloudfront for more information.

Failover Origins (Origin Groups)

You can set up CloudFront with origin failover for scenarios that require high availability. To get started, you create an origin group with two origins: a primary and a secondary. If the primary origin is unavailable, or returns specific HTTP response status codes that indicate a failure, CloudFront automatically switches to the secondary origin. You achieve that behavior in the CDK using the OriginGroup class:

myBucket := s3.NewBucket(this, jsii.String("myBucket"))
cloudfront.NewDistribution(this, jsii.String("myDist"), &DistributionProps{
	DefaultBehavior: &BehaviorOptions{
		Origin: origins.NewOriginGroup(&OriginGroupProps{
			PrimaryOrigin: origins.NewS3Origin(myBucket),
			FallbackOrigin: origins.NewHttpOrigin(jsii.String("www.example.com")),
			// optional, defaults to: 500, 502, 503 and 504
			FallbackStatusCodes: []*f64{
				jsii.Number(404),
			},
		}),
	},
})

From an API Gateway REST API

Origins can be created from an API Gateway REST API. It is recommended to use a regional API in this case.

var api restApi

cloudfront.NewDistribution(this, jsii.String("Distribution"), &DistributionProps{
	DefaultBehavior: &BehaviorOptions{
		Origin: origins.NewRestApiOrigin(api),
	},
})

The origin path will automatically be set as the stage name.

Documentation

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func NewHttpOrigin_Override 

func NewHttpOrigin_Override(h HttpOrigin, domainName *string, props *HttpOriginProps)

Experimental.

func NewLoadBalancerV2Origin_Override 

func NewLoadBalancerV2Origin_Override(l LoadBalancerV2Origin, loadBalancer awselasticloadbalancingv2.ILoadBalancerV2, props *LoadBalancerV2OriginProps)

Experimental.

func NewOriginGroup_Override 

func NewOriginGroup_Override(o OriginGroup, props *OriginGroupProps)

Experimental.

func NewRestApiOrigin_Override 

func NewRestApiOrigin_Override(r RestApiOrigin, restApi awsapigateway.RestApi, props *RestApiOriginProps)

Experimental.

func NewS3Origin_Override 

func NewS3Origin_Override(s S3Origin, bucket awss3.IBucket, props *S3OriginProps)

Experimental.

Types

type HttpOrigin 

type HttpOrigin interface {
	awscloudfront.OriginBase
	// Binds the origin to the associated Distribution.
	//
	// Can be used to grant permissions, create dependent resources, etc.
	// Experimental.
	Bind(_scope awscdk.Construct, options *awscloudfront.OriginBindOptions) *awscloudfront.OriginBindConfig
	// Experimental.
	RenderCustomOriginConfig() *awscloudfront.CfnDistribution_CustomOriginConfigProperty
	// Experimental.
	RenderS3OriginConfig() *awscloudfront.CfnDistribution_S3OriginConfigProperty
}

An Origin for an HTTP server or S3 bucket configured for website hosting.

Example: 

myBucket := s3.NewBucket(this, jsii.String("myBucket"))
cloudfront.NewDistribution(this, jsii.String("myDist"), &DistributionProps{
	DefaultBehavior: &BehaviorOptions{
		Origin: origins.NewOriginGroup(&OriginGroupProps{
			PrimaryOrigin: origins.NewS3Origin(myBucket),
			FallbackOrigin: origins.NewHttpOrigin(jsii.String("www.example.com")),
			// optional, defaults to: 500, 502, 503 and 504
			FallbackStatusCodes: []*f64{
				jsii.Number(404),
			},
		}),
	},
})

Experimental.

func NewHttpOrigin 

func NewHttpOrigin(domainName *string, props *HttpOriginProps) HttpOrigin

Experimental.

type HttpOriginProps 

type HttpOriginProps struct {
	// The number of times that CloudFront attempts to connect to the origin;
	//
	// valid values are 1, 2, or 3 attempts.
	// Experimental.
	ConnectionAttempts *float64 `field:"optional" json:"connectionAttempts" yaml:"connectionAttempts"`
	// The number of seconds that CloudFront waits when trying to establish a connection to the origin.
	//
	// Valid values are 1-10 seconds, inclusive.
	// Experimental.
	ConnectionTimeout awscdk.Duration `field:"optional" json:"connectionTimeout" yaml:"connectionTimeout"`
	// A list of HTTP header names and values that CloudFront adds to requests it sends to the origin.
	// Experimental.
	CustomHeaders *map[string]*string `field:"optional" json:"customHeaders" yaml:"customHeaders"`
	// When you enable Origin Shield in the AWS Region that has the lowest latency to your origin, you can get better network performance.
	// See: https://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/origin-shield.html
	//
	// Experimental.
	OriginShieldRegion *string `field:"optional" json:"originShieldRegion" yaml:"originShieldRegion"`
	// An optional path that CloudFront appends to the origin domain name when CloudFront requests content from the origin.
	//
	// Must begin, but not end, with '/' (e.g., '/production/images').
	// Experimental.
	OriginPath *string `field:"optional" json:"originPath" yaml:"originPath"`
	// The HTTP port that CloudFront uses to connect to the origin.
	// Experimental.
	HttpPort *float64 `field:"optional" json:"httpPort" yaml:"httpPort"`
	// The HTTPS port that CloudFront uses to connect to the origin.
	// Experimental.
	HttpsPort *float64 `field:"optional" json:"httpsPort" yaml:"httpsPort"`
	// Specifies how long, in seconds, CloudFront persists its connection to the origin.
	//
	// The valid range is from 1 to 180 seconds, inclusive.
	//
	// Note that values over 60 seconds are possible only after a limit increase request for the origin response timeout quota
	// has been approved in the target account; otherwise, values over 60 seconds will produce an error at deploy time.
	// Experimental.
	KeepaliveTimeout awscdk.Duration `field:"optional" json:"keepaliveTimeout" yaml:"keepaliveTimeout"`
	// The SSL versions to use when interacting with the origin.
	// Experimental.
	OriginSslProtocols *[]awscloudfront.OriginSslPolicy `field:"optional" json:"originSslProtocols" yaml:"originSslProtocols"`
	// Specifies the protocol (HTTP or HTTPS) that CloudFront uses to connect to the origin.
	// Experimental.
	ProtocolPolicy awscloudfront.OriginProtocolPolicy `field:"optional" json:"protocolPolicy" yaml:"protocolPolicy"`
	// Specifies how long, in seconds, CloudFront waits for a response from the origin, also known as the origin response timeout.
	//
	// The valid range is from 1 to 180 seconds, inclusive.
	//
	// Note that values over 60 seconds are possible only after a limit increase request for the origin response timeout quota
	// has been approved in the target account; otherwise, values over 60 seconds will produce an error at deploy time.
	// Experimental.
	ReadTimeout awscdk.Duration `field:"optional" json:"readTimeout" yaml:"readTimeout"`
}

Properties for an Origin backed by an S3 website-configured bucket, load balancer, or custom HTTP server.

Example: 

// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import monocdk "github.com/aws/aws-cdk-go/awscdk"
import "github.com/aws/aws-cdk-go/awscdk"
import "github.com/aws/aws-cdk-go/awscdk"

var duration duration

httpOriginProps := &HttpOriginProps{
	ConnectionAttempts: jsii.Number(123),
	ConnectionTimeout: duration,
	CustomHeaders: map[string]*string{
		"customHeadersKey": jsii.String("customHeaders"),
	},
	HttpPort: jsii.Number(123),
	HttpsPort: jsii.Number(123),
	KeepaliveTimeout: duration,
	OriginPath: jsii.String("originPath"),
	OriginShieldRegion: jsii.String("originShieldRegion"),
	OriginSslProtocols: []originSslPolicy{
		awscdk.Aws_cloudfront.*originSslPolicy_SSL_V3,
	},
	ProtocolPolicy: awscdk.*Aws_cloudfront.OriginProtocolPolicy_HTTP_ONLY,
	ReadTimeout: duration,
}

Experimental.

type LoadBalancerV2Origin 

type LoadBalancerV2Origin interface {
	HttpOrigin
	// Binds the origin to the associated Distribution.
	//
	// Can be used to grant permissions, create dependent resources, etc.
	// Experimental.
	Bind(_scope awscdk.Construct, options *awscloudfront.OriginBindOptions) *awscloudfront.OriginBindConfig
	// Experimental.
	RenderCustomOriginConfig() *awscloudfront.CfnDistribution_CustomOriginConfigProperty
	// Experimental.
	RenderS3OriginConfig() *awscloudfront.CfnDistribution_S3OriginConfigProperty
}

An Origin for a v2 load balancer.

Example: 

import ec2 "github.com/aws/aws-cdk-go/awscdk"
import elbv2 "github.com/aws/aws-cdk-go/awscdk"

var vpc vpc

// Create an application load balancer in a VPC. 'internetFacing' must be 'true'
// for CloudFront to access the load balancer and use it as an origin.
lb := elbv2.NewApplicationLoadBalancer(this, jsii.String("LB"), &ApplicationLoadBalancerProps{
	Vpc: Vpc,
	InternetFacing: jsii.Boolean(true),
})
cloudfront.NewDistribution(this, jsii.String("myDist"), &DistributionProps{
	DefaultBehavior: &BehaviorOptions{
		Origin: origins.NewLoadBalancerV2Origin(lb),
	},
})

Experimental.

func NewLoadBalancerV2Origin 

func NewLoadBalancerV2Origin(loadBalancer awselasticloadbalancingv2.ILoadBalancerV2, props *LoadBalancerV2OriginProps) LoadBalancerV2Origin

Experimental.

type LoadBalancerV2OriginProps 

type LoadBalancerV2OriginProps struct {
	// The number of times that CloudFront attempts to connect to the origin;
	//
	// valid values are 1, 2, or 3 attempts.
	// Experimental.
	ConnectionAttempts *float64 `field:"optional" json:"connectionAttempts" yaml:"connectionAttempts"`
	// The number of seconds that CloudFront waits when trying to establish a connection to the origin.
	//
	// Valid values are 1-10 seconds, inclusive.
	// Experimental.
	ConnectionTimeout awscdk.Duration `field:"optional" json:"connectionTimeout" yaml:"connectionTimeout"`
	// A list of HTTP header names and values that CloudFront adds to requests it sends to the origin.
	// Experimental.
	CustomHeaders *map[string]*string `field:"optional" json:"customHeaders" yaml:"customHeaders"`
	// When you enable Origin Shield in the AWS Region that has the lowest latency to your origin, you can get better network performance.
	// See: https://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/origin-shield.html
	//
	// Experimental.
	OriginShieldRegion *string `field:"optional" json:"originShieldRegion" yaml:"originShieldRegion"`
	// An optional path that CloudFront appends to the origin domain name when CloudFront requests content from the origin.
	//
	// Must begin, but not end, with '/' (e.g., '/production/images').
	// Experimental.
	OriginPath *string `field:"optional" json:"originPath" yaml:"originPath"`
	// The HTTP port that CloudFront uses to connect to the origin.
	// Experimental.
	HttpPort *float64 `field:"optional" json:"httpPort" yaml:"httpPort"`
	// The HTTPS port that CloudFront uses to connect to the origin.
	// Experimental.
	HttpsPort *float64 `field:"optional" json:"httpsPort" yaml:"httpsPort"`
	// Specifies how long, in seconds, CloudFront persists its connection to the origin.
	//
	// The valid range is from 1 to 180 seconds, inclusive.
	//
	// Note that values over 60 seconds are possible only after a limit increase request for the origin response timeout quota
	// has been approved in the target account; otherwise, values over 60 seconds will produce an error at deploy time.
	// Experimental.
	KeepaliveTimeout awscdk.Duration `field:"optional" json:"keepaliveTimeout" yaml:"keepaliveTimeout"`
	// The SSL versions to use when interacting with the origin.
	// Experimental.
	OriginSslProtocols *[]awscloudfront.OriginSslPolicy `field:"optional" json:"originSslProtocols" yaml:"originSslProtocols"`
	// Specifies the protocol (HTTP or HTTPS) that CloudFront uses to connect to the origin.
	// Experimental.
	ProtocolPolicy awscloudfront.OriginProtocolPolicy `field:"optional" json:"protocolPolicy" yaml:"protocolPolicy"`
	// Specifies how long, in seconds, CloudFront waits for a response from the origin, also known as the origin response timeout.
	//
	// The valid range is from 1 to 180 seconds, inclusive.
	//
	// Note that values over 60 seconds are possible only after a limit increase request for the origin response timeout quota
	// has been approved in the target account; otherwise, values over 60 seconds will produce an error at deploy time.
	// Experimental.
	ReadTimeout awscdk.Duration `field:"optional" json:"readTimeout" yaml:"readTimeout"`
}

Properties for an Origin backed by a v2 load balancer.

Example: 

import elbv2 "github.com/aws/aws-cdk-go/awscdk"

var loadBalancer applicationLoadBalancer

origin := origins.NewLoadBalancerV2Origin(loadBalancer, &LoadBalancerV2OriginProps{
	ConnectionAttempts: jsii.Number(3),
	ConnectionTimeout: awscdk.Duration_Seconds(jsii.Number(5)),
	ReadTimeout: awscdk.Duration_*Seconds(jsii.Number(45)),
	KeepaliveTimeout: awscdk.Duration_*Seconds(jsii.Number(45)),
	ProtocolPolicy: cloudfront.OriginProtocolPolicy_MATCH_VIEWER,
})

Experimental.

type OriginGroup 

type OriginGroup interface {
	awscloudfront.IOrigin
	// The method called when a given Origin is added (for the first time) to a Distribution.
	// Experimental.
	Bind(scope awscdk.Construct, options *awscloudfront.OriginBindOptions) *awscloudfront.OriginBindConfig
}

An Origin that represents a group.

Consists of a primary Origin, and a fallback Origin called when the primary returns one of the provided HTTP status codes.

Example: 

myBucket := s3.NewBucket(this, jsii.String("myBucket"))
cloudfront.NewDistribution(this, jsii.String("myDist"), &DistributionProps{
	DefaultBehavior: &BehaviorOptions{
		Origin: origins.NewOriginGroup(&OriginGroupProps{
			PrimaryOrigin: origins.NewS3Origin(myBucket),
			FallbackOrigin: origins.NewHttpOrigin(jsii.String("www.example.com")),
			// optional, defaults to: 500, 502, 503 and 504
			FallbackStatusCodes: []*f64{
				jsii.Number(404),
			},
		}),
	},
})

Experimental.

func NewOriginGroup 

func NewOriginGroup(props *OriginGroupProps) OriginGroup

Experimental.

type OriginGroupProps 

type OriginGroupProps struct {
	// The fallback origin that should serve requests when the primary fails.
	// Experimental.
	FallbackOrigin awscloudfront.IOrigin `field:"required" json:"fallbackOrigin" yaml:"fallbackOrigin"`
	// The primary origin that should serve requests for this group.
	// Experimental.
	PrimaryOrigin awscloudfront.IOrigin `field:"required" json:"primaryOrigin" yaml:"primaryOrigin"`
	// The list of HTTP status codes that, when returned from the primary origin, would cause querying the fallback origin.
	// Experimental.
	FallbackStatusCodes *[]*float64 `field:"optional" json:"fallbackStatusCodes" yaml:"fallbackStatusCodes"`
}

Construction properties for {@link OriginGroup}.

Example: 

myBucket := s3.NewBucket(this, jsii.String("myBucket"))
cloudfront.NewDistribution(this, jsii.String("myDist"), &DistributionProps{
	DefaultBehavior: &BehaviorOptions{
		Origin: origins.NewOriginGroup(&OriginGroupProps{
			PrimaryOrigin: origins.NewS3Origin(myBucket),
			FallbackOrigin: origins.NewHttpOrigin(jsii.String("www.example.com")),
			// optional, defaults to: 500, 502, 503 and 504
			FallbackStatusCodes: []*f64{
				jsii.Number(404),
			},
		}),
	},
})

Experimental.

type RestApiOrigin 

type RestApiOrigin interface {
	awscloudfront.OriginBase
	// Binds the origin to the associated Distribution.
	//
	// Can be used to grant permissions, create dependent resources, etc.
	// Experimental.
	Bind(_scope awscdk.Construct, options *awscloudfront.OriginBindOptions) *awscloudfront.OriginBindConfig
	// Experimental.
	RenderCustomOriginConfig() *awscloudfront.CfnDistribution_CustomOriginConfigProperty
	// Experimental.
	RenderS3OriginConfig() *awscloudfront.CfnDistribution_S3OriginConfigProperty
}

An Origin for an API Gateway REST API.

Example: 

var api restApi

cloudfront.NewDistribution(this, jsii.String("Distribution"), &DistributionProps{
	DefaultBehavior: &BehaviorOptions{
		Origin: origins.NewRestApiOrigin(api),
	},
})

Experimental.

func NewRestApiOrigin 

func NewRestApiOrigin(restApi awsapigateway.RestApi, props *RestApiOriginProps) RestApiOrigin

Experimental.

type RestApiOriginProps 

type RestApiOriginProps struct {
	// The number of times that CloudFront attempts to connect to the origin;
	//
	// valid values are 1, 2, or 3 attempts.
	// Experimental.
	ConnectionAttempts *float64 `field:"optional" json:"connectionAttempts" yaml:"connectionAttempts"`
	// The number of seconds that CloudFront waits when trying to establish a connection to the origin.
	//
	// Valid values are 1-10 seconds, inclusive.
	// Experimental.
	ConnectionTimeout awscdk.Duration `field:"optional" json:"connectionTimeout" yaml:"connectionTimeout"`
	// A list of HTTP header names and values that CloudFront adds to requests it sends to the origin.
	// Experimental.
	CustomHeaders *map[string]*string `field:"optional" json:"customHeaders" yaml:"customHeaders"`
	// When you enable Origin Shield in the AWS Region that has the lowest latency to your origin, you can get better network performance.
	// See: https://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/origin-shield.html
	//
	// Experimental.
	OriginShieldRegion *string `field:"optional" json:"originShieldRegion" yaml:"originShieldRegion"`
	// Specifies how long, in seconds, CloudFront persists its connection to the origin.
	//
	// The valid range is from 1 to 180 seconds, inclusive.
	//
	// Note that values over 60 seconds are possible only after a limit increase request for the origin response timeout quota
	// has been approved in the target account; otherwise, values over 60 seconds will produce an error at deploy time.
	// Experimental.
	KeepaliveTimeout awscdk.Duration `field:"optional" json:"keepaliveTimeout" yaml:"keepaliveTimeout"`
	// Specifies how long, in seconds, CloudFront waits for a response from the origin, also known as the origin response timeout.
	//
	// The valid range is from 1 to 180 seconds, inclusive.
	//
	// Note that values over 60 seconds are possible only after a limit increase request for the origin response timeout quota
	// has been approved in the target account; otherwise, values over 60 seconds will produce an error at deploy time.
	// Experimental.
	ReadTimeout awscdk.Duration `field:"optional" json:"readTimeout" yaml:"readTimeout"`
}

Properties for an Origin for an API Gateway REST API.

Example: 

// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import monocdk "github.com/aws/aws-cdk-go/awscdk"
import "github.com/aws/aws-cdk-go/awscdk"

var duration duration

restApiOriginProps := &RestApiOriginProps{
	ConnectionAttempts: jsii.Number(123),
	ConnectionTimeout: duration,
	CustomHeaders: map[string]*string{
		"customHeadersKey": jsii.String("customHeaders"),
	},
	KeepaliveTimeout: duration,
	OriginShieldRegion: jsii.String("originShieldRegion"),
	ReadTimeout: duration,
}

Experimental.

type S3Origin 

type S3Origin interface {
	awscloudfront.IOrigin
	// The method called when a given Origin is added (for the first time) to a Distribution.
	// Experimental.
	Bind(scope awscdk.Construct, options *awscloudfront.OriginBindOptions) *awscloudfront.OriginBindConfig
}

An Origin that is backed by an S3 bucket.

If the bucket is configured for website hosting, this origin will be configured to use the bucket as an HTTP server origin and will use the bucket's configured website redirects and error handling. Otherwise, the origin is created as a bucket origin and will use CloudFront's redirect and error handling.

Example: 

// Adding an existing Lambda@Edge function created in a different stack
// to a CloudFront distribution.
var s3Bucket bucket

functionVersion := lambda.Version_FromVersionArn(this, jsii.String("Version"), jsii.String("arn:aws:lambda:us-east-1:123456789012:function:functionName:1"))

cloudfront.NewDistribution(this, jsii.String("distro"), &DistributionProps{
	DefaultBehavior: &BehaviorOptions{
		Origin: origins.NewS3Origin(s3Bucket),
		EdgeLambdas: []edgeLambda{
			&edgeLambda{
				FunctionVersion: *FunctionVersion,
				EventType: cloudfront.LambdaEdgeEventType_VIEWER_REQUEST,
			},
		},
	},
})

Experimental.

func NewS3Origin 

func NewS3Origin(bucket awss3.IBucket, props *S3OriginProps) S3Origin

Experimental.

type S3OriginProps 

type S3OriginProps struct {
	// The number of times that CloudFront attempts to connect to the origin;
	//
	// valid values are 1, 2, or 3 attempts.
	// Experimental.
	ConnectionAttempts *float64 `field:"optional" json:"connectionAttempts" yaml:"connectionAttempts"`
	// The number of seconds that CloudFront waits when trying to establish a connection to the origin.
	//
	// Valid values are 1-10 seconds, inclusive.
	// Experimental.
	ConnectionTimeout awscdk.Duration `field:"optional" json:"connectionTimeout" yaml:"connectionTimeout"`
	// A list of HTTP header names and values that CloudFront adds to requests it sends to the origin.
	// Experimental.
	CustomHeaders *map[string]*string `field:"optional" json:"customHeaders" yaml:"customHeaders"`
	// When you enable Origin Shield in the AWS Region that has the lowest latency to your origin, you can get better network performance.
	// See: https://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/origin-shield.html
	//
	// Experimental.
	OriginShieldRegion *string `field:"optional" json:"originShieldRegion" yaml:"originShieldRegion"`
	// An optional path that CloudFront appends to the origin domain name when CloudFront requests content from the origin.
	//
	// Must begin, but not end, with '/' (e.g., '/production/images').
	// Experimental.
	OriginPath *string `field:"optional" json:"originPath" yaml:"originPath"`
	// An optional Origin Access Identity of the origin identity cloudfront will use when calling your s3 bucket.
	// Experimental.
	OriginAccessIdentity awscloudfront.IOriginAccessIdentity `field:"optional" json:"originAccessIdentity" yaml:"originAccessIdentity"`
}

Properties to use to customize an S3 Origin.

Example: 

myBucket := s3.NewBucket(this, jsii.String("myBucket"))
cloudfront.NewDistribution(this, jsii.String("myDist"), &DistributionProps{
	DefaultBehavior: &BehaviorOptions{
		Origin: origins.NewS3Origin(myBucket, &S3OriginProps{
			CustomHeaders: map[string]*string{
				"Foo": jsii.String("bar"),
			},
		}),
	},
})

Experimental.

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