awss3deployment

README

AWS S3 Deployment Construct Library

This library allows populating an S3 bucket with the contents of .zip files from other S3 buckets or from local disk.

The following example defines a publicly accessible S3 bucket with web hosting enabled and populates it from a local directory on disk.

websiteBucket := s3.NewBucket(this, jsii.String("WebsiteBucket"), &bucketProps{
	websiteIndexDocument: jsii.String("index.html"),
	publicReadAccess: jsii.Boolean(true),
})

s3deploy.NewBucketDeployment(this, jsii.String("DeployWebsite"), &bucketDeploymentProps{
	sources: []iSource{
		s3deploy.source.asset(jsii.String("./website-dist")),
	},
	destinationBucket: websiteBucket,
	destinationKeyPrefix: jsii.String("web/static"),
})

This is what happens under the hood:

1. When this stack is deployed (either via cdk deploy or via CI/CD), the contents of the local website-dist directory will be archived and uploaded to an intermediary assets bucket. If there is more than one source, they will be individually uploaded.
2. The BucketDeployment construct synthesizes a custom CloudFormation resource of type Custom::CDKBucketDeployment into the template. The source bucket/key is set to point to the assets bucket.
3. The custom resource downloads the .zip archive, extracts it and issues aws s3 sync --delete against the destination bucket (in this case websiteBucket). If there is more than one source, the sources will be downloaded and merged pre-deployment at this step.

If you are referencing the filled bucket in another construct that depends on the files already be there, be sure to use deployment.deployedBucket. This will ensure the bucket deployment has finished before the resource that uses the bucket is created:

var websiteBucket bucket


deployment := s3deploy.NewBucketDeployment(this, jsii.String("DeployWebsite"), &bucketDeploymentProps{
	sources: []iSource{
		s3deploy.source.asset(path.join(__dirname, jsii.String("my-website"))),
	},
	destinationBucket: websiteBucket,
})

NewConstructThatReadsFromTheBucket(this, jsii.String("Consumer"), map[string]iBucket{
	// Use 'deployment.deployedBucket' instead of 'websiteBucket' here
	"bucket": deployment.deployedBucket,
})

Supported sources

The following source types are supported for bucket deployments:

• Local .zip file: s3deploy.Source.asset('/path/to/local/file.zip')
• Local directory: s3deploy.Source.asset('/path/to/local/directory')
• Another bucket: s3deploy.Source.bucket(bucket, zipObjectKey)
• String data: s3deploy.Source.data('object-key.txt', 'hello, world!') (supports deploy-time values)
• JSON data: s3deploy.Source.jsonData('object-key.json', { json: 'object' }) (supports deploy-time values)

To create a source from a single file, you can pass AssetOptions to exclude all but a single file:

• Single file: s3deploy.Source.asset('/path/to/local/directory', { exclude: ['**', '!onlyThisFile.txt'] })

IMPORTANT The aws-s3-deployment module is only intended to be used with zip files from trusted sources. Directories bundled by the CDK CLI (by using Source.asset() on a directory) are safe. If you are using Source.asset() or Source.bucket() to reference an existing zip file, make sure you trust the file you are referencing. Zips from untrusted sources might be able to execute arbitrary code in the Lambda Function used by this module, and use its permissions to read or write unexpected files in the S3 bucket.

Retain on Delete

By default, the contents of the destination bucket will not be deleted when the BucketDeployment resource is removed from the stack or when the destination is changed. You can use the option retainOnDelete: false to disable this behavior, in which case the contents will be deleted.

Configuring this has a few implications you should be aware of:

• Logical ID Changes

  Changing the logical ID of the BucketDeployment construct, without changing the destination (for example due to refactoring, or intentional ID change) will result in the deletion of the objects. This is because CloudFormation will first create the new resource, which will have no affect, followed by a deletion of the old resource, which will cause a deletion of the objects, since the destination hasn't changed, and retainOnDelete is false.

• Destination Changes

  When the destination bucket or prefix is changed, all files in the previous destination will first be deleted and then uploaded to the new destination location. This could have availability implications on your users.

General Recommendations

Shared Bucket

If the destination bucket is not dedicated to the specific BucketDeployment construct (i.e shared by other entities), we recommend to always configure the destinationKeyPrefix property. This will prevent the deployment from accidentally deleting data that wasn't uploaded by it.

Dedicated Bucket

If the destination bucket is dedicated, it might be reasonable to skip the prefix configuration, in which case, we recommend to remove retainOnDelete: false, and instead, configure the autoDeleteObjects property on the destination bucket. This will avoid the logical ID problem mentioned above.

Prune

By default, files in the destination bucket that don't exist in the source will be deleted when the BucketDeployment resource is created or updated. You can use the option prune: false to disable this behavior, in which case the files will not be deleted.

var destinationBucket bucket

s3deploy.NewBucketDeployment(this, jsii.String("DeployMeWithoutDeletingFilesOnDestination"), &bucketDeploymentProps{
	sources: []iSource{
		s3deploy.source.asset(path.join(__dirname, jsii.String("my-website"))),
	},
	destinationBucket: destinationBucket,
	prune: jsii.Boolean(false),
})

This option also enables you to multiple bucket deployments for the same destination bucket & prefix, each with its own characteristics. For example, you can set different cache-control headers based on file extensions:

var destinationBucket bucket

s3deploy.NewBucketDeployment(this, jsii.String("BucketDeployment"), &bucketDeploymentProps{
	sources: []iSource{
		s3deploy.source.asset(jsii.String("./website"), &assetOptions{
			exclude: []*string{
				jsii.String("index.html"),
			},
		}),
	},
	destinationBucket: destinationBucket,
	cacheControl: []cacheControl{
		s3deploy.*cacheControl.fromString(jsii.String("max-age=31536000,public,immutable")),
	},
	prune: jsii.Boolean(false),
})

s3deploy.NewBucketDeployment(this, jsii.String("HTMLBucketDeployment"), &bucketDeploymentProps{
	sources: []*iSource{
		s3deploy.*source.asset(jsii.String("./website"), &assetOptions{
			exclude: []*string{
				jsii.String("*"),
				jsii.String("!index.html"),
			},
		}),
	},
	destinationBucket: destinationBucket,
	cacheControl: []*cacheControl{
		s3deploy.*cacheControl.fromString(jsii.String("max-age=0,no-cache,no-store,must-revalidate")),
	},
	prune: jsii.Boolean(false),
})

Exclude and Include Filters

There are two points at which filters are evaluated in a deployment: asset bundling and the actual deployment. If you simply want to exclude files in the asset bundling process, you should leverage the exclude property of AssetOptions when defining your source:

var destinationBucket bucket

s3deploy.NewBucketDeployment(this, jsii.String("HTMLBucketDeployment"), &bucketDeploymentProps{
	sources: []iSource{
		s3deploy.source.asset(jsii.String("./website"), &assetOptions{
			exclude: []*string{
				jsii.String("*"),
				jsii.String("!index.html"),
			},
		}),
	},
	destinationBucket: destinationBucket,
})

If you want to specify filters to be used in the deployment process, you can use the exclude and include filters on BucketDeployment. If excluded, these files will not be deployed to the destination bucket. In addition, if the file already exists in the destination bucket, it will not be deleted if you are using the prune option:

var destinationBucket bucket

s3deploy.NewBucketDeployment(this, jsii.String("DeployButExcludeSpecificFiles"), &bucketDeploymentProps{
	sources: []iSource{
		s3deploy.source.asset(path.join(__dirname, jsii.String("my-website"))),
	},
	destinationBucket: destinationBucket,
	exclude: []*string{
		jsii.String("*.txt"),
	},
})

These filters follow the same format that is used for the AWS CLI. See the CLI documentation for information on Using Include and Exclude Filters.

Objects metadata

You can specify metadata to be set on all the objects in your deployment. There are 2 types of metadata in S3: system-defined metadata and user-defined metadata. System-defined metadata have a special purpose, for example cache-control defines how long to keep an object cached. User-defined metadata are not used by S3 and keys always begin with x-amz-meta- (this prefix is added automatically).

System defined metadata keys include the following:

• cache-control (--cache-control in aws s3 sync)
• content-disposition (--content-disposition in aws s3 sync)
• content-encoding (--content-encoding in aws s3 sync)
• content-language (--content-language in aws s3 sync)
• content-type (--content-type in aws s3 sync)
• expires (--expires in aws s3 sync)
• x-amz-storage-class (--storage-class in aws s3 sync)
• x-amz-website-redirect-location (--website-redirect in aws s3 sync)
• x-amz-server-side-encryption (--sse in aws s3 sync)
• x-amz-server-side-encryption-aws-kms-key-id (--sse-kms-key-id in aws s3 sync)
• x-amz-server-side-encryption-customer-algorithm (--sse-c-copy-source in aws s3 sync)
• x-amz-acl (--acl in aws s3 sync)

You can find more information about system defined metadata keys in S3 PutObject documentation and aws s3 sync documentation.

websiteBucket := s3.NewBucket(this, jsii.String("WebsiteBucket"), &bucketProps{
	websiteIndexDocument: jsii.String("index.html"),
	publicReadAccess: jsii.Boolean(true),
})

s3deploy.NewBucketDeployment(this, jsii.String("DeployWebsite"), &bucketDeploymentProps{
	sources: []iSource{
		s3deploy.source.asset(jsii.String("./website-dist")),
	},
	destinationBucket: websiteBucket,
	destinationKeyPrefix: jsii.String("web/static"),
	 // optional prefix in destination bucket
	metadata: &userDefinedObjectMetadata{
		a: jsii.String("1"),
		b: jsii.String("2"),
	},
	 // user-defined metadata

	// system-defined metadata
	contentType: jsii.String("text/html"),
	contentLanguage: jsii.String("en"),
	storageClass: s3deploy.storageClass_INTELLIGENT_TIERING,
	serverSideEncryption: s3deploy.serverSideEncryption_AES_256,
	cacheControl: []cacheControl{
		s3deploy.*cacheControl.setPublic(),
		s3deploy.*cacheControl.maxAge(awscdk.Duration.hours(jsii.Number(1))),
	},
	accessControl: s3.bucketAccessControl_BUCKET_OWNER_FULL_CONTROL,
})

CloudFront Invalidation

You can provide a CloudFront distribution and optional paths to invalidate after the bucket deployment finishes.

import cloudfront "github.com/aws/aws-cdk-go/awscdk"
import origins "github.com/aws/aws-cdk-go/awscdk"


bucket := s3.NewBucket(this, jsii.String("Destination"))

// Handles buckets whether or not they are configured for website hosting.
distribution := cloudfront.NewDistribution(this, jsii.String("Distribution"), &distributionProps{
	defaultBehavior: &behaviorOptions{
		origin: origins.NewS3Origin(bucket),
	},
})

s3deploy.NewBucketDeployment(this, jsii.String("DeployWithInvalidation"), &bucketDeploymentProps{
	sources: []iSource{
		s3deploy.source.asset(jsii.String("./website-dist")),
	},
	destinationBucket: bucket,
	distribution: distribution,
	distributionPaths: []*string{
		jsii.String("/images/*.png"),
	},
})

Size Limits

The default memory limit for the deployment resource is 128MiB. If you need to copy larger files, you can use the memoryLimit configuration to increase the size of the AWS Lambda resource handler.

The default ephemeral storage size for the deployment resource is 512MiB. If you need to upload larger files, you may hit this limit. You can use the ephemeralStorageSize configuration to increase the storage size of the AWS Lambda resource handler.

NOTE: a new AWS Lambda handler will be created in your stack for each combination of memory and storage size.

EFS Support

If your workflow needs more disk space than default (512 MB) disk space, you may attach an EFS storage to underlying lambda function. To Enable EFS support set efs and vpc props for BucketDeployment.

Check sample usage below. Please note that creating VPC inline may cause stack deletion failures. It is shown as below for simplicity. To avoid such condition, keep your network infra (VPC) in a separate stack and pass as props.

var destinationBucket bucket
var vpc vpc


s3deploy.NewBucketDeployment(this, jsii.String("DeployMeWithEfsStorage"), &bucketDeploymentProps{
	sources: []iSource{
		s3deploy.source.asset(path.join(__dirname, jsii.String("my-website"))),
	},
	destinationBucket: destinationBucket,
	destinationKeyPrefix: jsii.String("efs/"),
	useEfs: jsii.Boolean(true),
	vpc: vpc,
	retainOnDelete: jsii.Boolean(false),
})

Data with deploy-time values

The content passed to Source.data() or Source.jsonData() can include references that will get resolved only during deployment.

For example:

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

var destinationBucket bucket
var topic topic


appConfig := map[string]interface{}{
	"topic_arn": topic.topicArn,
	"base_url": jsii.String("https://my-endpoint"),
}

s3deploy.NewBucketDeployment(this, jsii.String("BucketDeployment"), &bucketDeploymentProps{
	sources: []iSource{
		s3deploy.source.jsonData(jsii.String("config.json"), appConfig),
	},
	destinationBucket: destinationBucket,
})

The value in topic.topicArn is a deploy-time value. It only gets resolved during deployment by placing a marker in the generated source file and substituting it when its deployed to the destination with the actual value.

Notes

• This library uses an AWS CloudFormation custom resource which is about 10MiB in size. The code of this resource is bundled with this library.

• AWS Lambda execution time is limited to 15min. This limits the amount of data which can be deployed into the bucket by this timeout.

• When the BucketDeployment is removed from the stack, the contents are retained in the destination bucket (#952).

• If you are using s3deploy.Source.bucket() to take the file source from another bucket: the deployed files will only be updated if the key (file name) of the file in the source bucket changes. Mutating the file in place will not be good enough: the custom resource will simply not run if the properties don't change.

  • If you use assets (s3deploy.Source.asset()) you don't need to worry about this: the asset system will make sure that if the files have changed, the file name is unique and the deployment will run.

Development

The custom resource is implemented in Python 3.7 in order to be able to leverage the AWS CLI for "aws s3 sync". The code is under lib/lambda and unit tests are under test/lambda.

This package requires Python 3.7 during build time in order to create the custom resource Lambda bundle and test it. It also relies on a few bash scripts, so might be tricky to build on Windows.

Roadmap

• Support "blue/green" deployments (#954)

Documentation

Index

• func BucketDeployment_IsConstruct(x interface{}) *bool
• func NewBucketDeployment_Override(b BucketDeployment, scope constructs.Construct, id *string, ...)
• type BucketDeployment
  • func NewBucketDeployment(scope constructs.Construct, id *string, props *BucketDeploymentProps) BucketDeployment
• type BucketDeploymentProps
• type CacheControl
  • func CacheControl_FromString(s *string) CacheControl
  • func CacheControl_MaxAge(t awscdk.Duration) CacheControl
  • func CacheControl_MustRevalidate() CacheControl
  • func CacheControl_NoCache() CacheControl
  • func CacheControl_NoTransform() CacheControl
  • func CacheControl_ProxyRevalidate() CacheControl
  • func CacheControl_SMaxAge(t awscdk.Duration) CacheControl
  • func CacheControl_SetPrivate() CacheControl
  • func CacheControl_SetPublic() CacheControl
• type DeploymentSourceContext
• type Expires
  • func Expires_After(t awscdk.Duration) Expires
  • func Expires_AtDate(d *time.Time) Expires
  • func Expires_AtTimestamp(t *float64) Expires
  • func Expires_FromString(s *string) Expires
• type ISource
  • func Source_Asset(path *string, options *awss3assets.AssetOptions) ISource
  • func Source_Bucket(bucket awss3.IBucket, zipObjectKey *string) ISource
  • func Source_Data(objectKey *string, data *string) ISource
  • func Source_JsonData(objectKey *string, obj interface{}) ISource
• type ServerSideEncryption
• type Source
• type SourceConfig
• type StorageClass
• type UserDefinedObjectMetadata

Functions

func BucketDeployment_IsConstruct

func BucketDeployment_IsConstruct(x interface{}) *bool

Return whether the given object is a Construct. Experimental.

func NewBucketDeployment_Override

func NewBucketDeployment_Override(b BucketDeployment, scope constructs.Construct, id *string, props *BucketDeploymentProps)

Experimental.

Types

type BucketDeployment

type BucketDeployment interface {
	awscdk.Construct
	// The bucket after the deployment.
	//
	// If you want to reference the destination bucket in another construct and make sure the
	// bucket deployment has happened before the next operation is started, pass the other construct
	// a reference to `deployment.deployedBucket`.
	//
	// Doing this replaces calling `otherResource.node.addDependency(deployment)`.
	// Experimental.
	DeployedBucket() awss3.IBucket
	// The construct tree node associated with this construct.
	// Experimental.
	Node() awscdk.ConstructNode
	// Perform final modifications before synthesis.
	//
	// This method can be implemented by derived constructs in order to perform
	// final changes before synthesis. prepare() will be called after child
	// constructs have been prepared.
	//
	// This is an advanced framework feature. Only use this if you
	// understand the implications.
	// Experimental.
	OnPrepare()
	// Allows this construct to emit artifacts into the cloud assembly during synthesis.
	//
	// This method is usually implemented by framework-level constructs such as `Stack` and `Asset`
	// as they participate in synthesizing the cloud assembly.
	// Experimental.
	OnSynthesize(session constructs.ISynthesisSession)
	// Validate the current construct.
	//
	// This method can be implemented by derived constructs in order to perform
	// validation logic. It is called on all constructs before synthesis.
	//
	// Returns: An array of validation error messages, or an empty array if the construct is valid.
	// Experimental.
	OnValidate() *[]*string
	// Perform final modifications before synthesis.
	//
	// This method can be implemented by derived constructs in order to perform
	// final changes before synthesis. prepare() will be called after child
	// constructs have been prepared.
	//
	// This is an advanced framework feature. Only use this if you
	// understand the implications.
	// Experimental.
	Prepare()
	// Allows this construct to emit artifacts into the cloud assembly during synthesis.
	//
	// This method is usually implemented by framework-level constructs such as `Stack` and `Asset`
	// as they participate in synthesizing the cloud assembly.
	// Experimental.
	Synthesize(session awscdk.ISynthesisSession)
	// Returns a string representation of this construct.
	// Experimental.
	ToString() *string
	// Validate the current construct.
	//
	// This method can be implemented by derived constructs in order to perform
	// validation logic. It is called on all constructs before synthesis.
	//
	// Returns: An array of validation error messages, or an empty array if the construct is valid.
	// Experimental.
	Validate() *[]*string
}

`BucketDeployment` populates an S3 bucket with the contents of .zip files from other S3 buckets or from local disk.

Example:

var websiteBucket bucket

deployment := s3deploy.NewBucketDeployment(this, jsii.String("DeployWebsite"), &bucketDeploymentProps{
	sources: []iSource{
		s3deploy.source.asset(path.join(__dirname, jsii.String("my-website"))),
	},
	destinationBucket: websiteBucket,
})

NewConstructThatReadsFromTheBucket(this, jsii.String("Consumer"), map[string]iBucket{
	// Use 'deployment.deployedBucket' instead of 'websiteBucket' here
	"bucket": deployment.deployedBucket,
})

Experimental.

func NewBucketDeployment

func NewBucketDeployment(scope constructs.Construct, id *string, props *BucketDeploymentProps) BucketDeployment

Experimental.

type BucketDeploymentProps

type BucketDeploymentProps struct {
	// The S3 bucket to sync the contents of the zip file to.
	// Experimental.
	DestinationBucket awss3.IBucket `field:"required" json:"destinationBucket" yaml:"destinationBucket"`
	// The sources from which to deploy the contents of this bucket.
	// Experimental.
	Sources *[]ISource `field:"required" json:"sources" yaml:"sources"`
	// System-defined x-amz-acl metadata to be set on all objects in the deployment.
	// See: https://docs.aws.amazon.com/AmazonS3/latest/userguide/acl-overview.html#canned-acl
	//
	// Experimental.
	AccessControl awss3.BucketAccessControl `field:"optional" json:"accessControl" yaml:"accessControl"`
	// System-defined cache-control metadata to be set on all objects in the deployment.
	// See: https://docs.aws.amazon.com/AmazonS3/latest/dev/UsingMetadata.html#SysMetadata
	//
	// Experimental.
	CacheControl *[]CacheControl `field:"optional" json:"cacheControl" yaml:"cacheControl"`
	// System-defined cache-disposition metadata to be set on all objects in the deployment.
	// See: https://docs.aws.amazon.com/AmazonS3/latest/dev/UsingMetadata.html#SysMetadata
	//
	// Experimental.
	ContentDisposition *string `field:"optional" json:"contentDisposition" yaml:"contentDisposition"`
	// System-defined content-encoding metadata to be set on all objects in the deployment.
	// See: https://docs.aws.amazon.com/AmazonS3/latest/dev/UsingMetadata.html#SysMetadata
	//
	// Experimental.
	ContentEncoding *string `field:"optional" json:"contentEncoding" yaml:"contentEncoding"`
	// System-defined content-language metadata to be set on all objects in the deployment.
	// See: https://docs.aws.amazon.com/AmazonS3/latest/dev/UsingMetadata.html#SysMetadata
	//
	// Experimental.
	ContentLanguage *string `field:"optional" json:"contentLanguage" yaml:"contentLanguage"`
	// System-defined content-type metadata to be set on all objects in the deployment.
	// See: https://docs.aws.amazon.com/AmazonS3/latest/dev/UsingMetadata.html#SysMetadata
	//
	// Experimental.
	ContentType *string `field:"optional" json:"contentType" yaml:"contentType"`
	// Key prefix in the destination bucket.
	//
	// Must be <=104 characters.
	// Experimental.
	DestinationKeyPrefix *string `field:"optional" json:"destinationKeyPrefix" yaml:"destinationKeyPrefix"`
	// The CloudFront distribution using the destination bucket as an origin.
	//
	// Files in the distribution's edge caches will be invalidated after
	// files are uploaded to the destination bucket.
	// Experimental.
	Distribution awscloudfront.IDistribution `field:"optional" json:"distribution" yaml:"distribution"`
	// The file paths to invalidate in the CloudFront distribution.
	// Experimental.
	DistributionPaths *[]*string `field:"optional" json:"distributionPaths" yaml:"distributionPaths"`
	// The size of the AWS Lambda function’s /tmp directory in MiB.
	// Experimental.
	EphemeralStorageSize awscdk.Size `field:"optional" json:"ephemeralStorageSize" yaml:"ephemeralStorageSize"`
	// If this is set, matching files or objects will be excluded from the deployment's sync command.
	//
	// This can be used to exclude a file from being pruned in the destination bucket.
	//
	// If you want to just exclude files from the deployment package (which excludes these files
	// evaluated when invalidating the asset), you should leverage the `exclude` property of
	// `AssetOptions` when defining your source.
	// See: https://docs.aws.amazon.com/cli/latest/reference/s3/index.html#use-of-exclude-and-include-filters
	//
	// Experimental.
	Exclude *[]*string `field:"optional" json:"exclude" yaml:"exclude"`
	// System-defined expires metadata to be set on all objects in the deployment.
	// See: https://docs.aws.amazon.com/AmazonS3/latest/dev/UsingMetadata.html#SysMetadata
	//
	// Experimental.
	Expires awscdk.Expiration `field:"optional" json:"expires" yaml:"expires"`
	// If this is set, matching files or objects will be included with the deployment's sync command.
	//
	// Since all files from the deployment package are included by default, this property
	// is usually leveraged alongside an `exclude` filter.
	// See: https://docs.aws.amazon.com/cli/latest/reference/s3/index.html#use-of-exclude-and-include-filters
	//
	// Experimental.
	Include *[]*string `field:"optional" json:"include" yaml:"include"`
	// The number of days that the lambda function's log events are kept in CloudWatch Logs.
	// Experimental.
	LogRetention awslogs.RetentionDays `field:"optional" json:"logRetention" yaml:"logRetention"`
	// The amount of memory (in MiB) to allocate to the AWS Lambda function which replicates the files from the CDK bucket to the destination bucket.
	//
	// If you are deploying large files, you will need to increase this number
	// accordingly.
	// Experimental.
	MemoryLimit *float64 `field:"optional" json:"memoryLimit" yaml:"memoryLimit"`
	// User-defined object metadata to be set on all objects in the deployment.
	// See: https://docs.aws.amazon.com/AmazonS3/latest/dev/UsingMetadata.html#UserMetadata
	//
	// Experimental.
	Metadata *UserDefinedObjectMetadata `field:"optional" json:"metadata" yaml:"metadata"`
	// If this is set to false, files in the destination bucket that do not exist in the asset, will NOT be deleted during deployment (create/update).
	// See: https://docs.aws.amazon.com/cli/latest/reference/s3/sync.html
	//
	// Experimental.
	Prune *bool `field:"optional" json:"prune" yaml:"prune"`
	// If this is set to "false", the destination files will be deleted when the resource is deleted or the destination is updated.
	//
	// NOTICE: Configuring this to "false" might have operational implications. Please
	// visit to the package documentation referred below to make sure you fully understand those implications.
	// See: https://github.com/aws/aws-cdk/tree/master/packages/%40aws-cdk/aws-s3-deployment#retain-on-delete
	//
	// Experimental.
	RetainOnDelete *bool `field:"optional" json:"retainOnDelete" yaml:"retainOnDelete"`
	// Execution role associated with this function.
	// Experimental.
	Role awsiam.IRole `field:"optional" json:"role" yaml:"role"`
	// System-defined x-amz-server-side-encryption metadata to be set on all objects in the deployment.
	// See: https://docs.aws.amazon.com/AmazonS3/latest/dev/UsingMetadata.html#SysMetadata
	//
	// Experimental.
	ServerSideEncryption ServerSideEncryption `field:"optional" json:"serverSideEncryption" yaml:"serverSideEncryption"`
	// System-defined x-amz-server-side-encryption-aws-kms-key-id metadata to be set on all objects in the deployment.
	// See: https://docs.aws.amazon.com/AmazonS3/latest/dev/UsingMetadata.html#SysMetadata
	//
	// Experimental.
	ServerSideEncryptionAwsKmsKeyId *string `field:"optional" json:"serverSideEncryptionAwsKmsKeyId" yaml:"serverSideEncryptionAwsKmsKeyId"`
	// System-defined x-amz-server-side-encryption-customer-algorithm metadata to be set on all objects in the deployment.
	//
	// Warning: This is not a useful parameter until this bug is fixed: https://github.com/aws/aws-cdk/issues/6080
	// See: https://docs.aws.amazon.com/AmazonS3/latest/dev/ServerSideEncryptionCustomerKeys.html#sse-c-how-to-programmatically-intro
	//
	// Experimental.
	ServerSideEncryptionCustomerAlgorithm *string `field:"optional" json:"serverSideEncryptionCustomerAlgorithm" yaml:"serverSideEncryptionCustomerAlgorithm"`
	// System-defined x-amz-storage-class metadata to be set on all objects in the deployment.
	// See: https://docs.aws.amazon.com/AmazonS3/latest/dev/UsingMetadata.html#SysMetadata
	//
	// Experimental.
	StorageClass StorageClass `field:"optional" json:"storageClass" yaml:"storageClass"`
	// Mount an EFS file system.
	//
	// Enable this if your assets are large and you encounter disk space errors.
	// Enabling this option will require a VPC to be specified.
	// Experimental.
	UseEfs *bool `field:"optional" json:"useEfs" yaml:"useEfs"`
	// The VPC network to place the deployment lambda handler in.
	//
	// This is required if `useEfs` is set.
	// Experimental.
	Vpc awsec2.IVpc `field:"optional" json:"vpc" yaml:"vpc"`
	// Where in the VPC to place the deployment lambda handler.
	//
	// Only used if 'vpc' is supplied.
	// Experimental.
	VpcSubnets *awsec2.SubnetSelection `field:"optional" json:"vpcSubnets" yaml:"vpcSubnets"`
	// System-defined x-amz-website-redirect-location metadata to be set on all objects in the deployment.
	// See: https://docs.aws.amazon.com/AmazonS3/latest/dev/UsingMetadata.html#SysMetadata
	//
	// Experimental.
	WebsiteRedirectLocation *string `field:"optional" json:"websiteRedirectLocation" yaml:"websiteRedirectLocation"`
}

Properties for `BucketDeployment`.

Example:

var websiteBucket bucket

deployment := s3deploy.NewBucketDeployment(this, jsii.String("DeployWebsite"), &bucketDeploymentProps{
	sources: []iSource{
		s3deploy.source.asset(path.join(__dirname, jsii.String("my-website"))),
	},
	destinationBucket: websiteBucket,
})

NewConstructThatReadsFromTheBucket(this, jsii.String("Consumer"), map[string]iBucket{
	// Use 'deployment.deployedBucket' instead of 'websiteBucket' here
	"bucket": deployment.deployedBucket,
})

Experimental.

type CacheControl

type CacheControl interface {
	// The raw cache control setting.
	// Experimental.
	Value() interface{}
}

Used for HTTP cache-control header, which influences downstream caches.

Example:

var destinationBucket bucket

s3deploy.NewBucketDeployment(this, jsii.String("BucketDeployment"), &bucketDeploymentProps{
	sources: []iSource{
		s3deploy.source.asset(jsii.String("./website"), &assetOptions{
			exclude: []*string{
				jsii.String("index.html"),
			},
		}),
	},
	destinationBucket: destinationBucket,
	cacheControl: []cacheControl{
		s3deploy.*cacheControl.fromString(jsii.String("max-age=31536000,public,immutable")),
	},
	prune: jsii.Boolean(false),
})

s3deploy.NewBucketDeployment(this, jsii.String("HTMLBucketDeployment"), &bucketDeploymentProps{
	sources: []*iSource{
		s3deploy.*source.asset(jsii.String("./website"), &assetOptions{
			exclude: []*string{
				jsii.String("*"),
				jsii.String("!index.html"),
			},
		}),
	},
	destinationBucket: destinationBucket,
	cacheControl: []*cacheControl{
		s3deploy.*cacheControl.fromString(jsii.String("max-age=0,no-cache,no-store,must-revalidate")),
	},
	prune: jsii.Boolean(false),
})

See: https://docs.aws.amazon.com/AmazonS3/latest/dev/UsingMetadata.html#SysMetadata

Experimental.

func CacheControl_FromString

func CacheControl_FromString(s *string) CacheControl

Constructs a custom cache control key from the literal value. Experimental.

func CacheControl_MaxAge

func CacheControl_MaxAge(t awscdk.Duration) CacheControl

Sets 'max-age=<duration-in-seconds>'. Experimental.

func CacheControl_MustRevalidate

func CacheControl_MustRevalidate() CacheControl

Sets 'must-revalidate'. Experimental.

func CacheControl_NoCache

func CacheControl_NoCache() CacheControl

Sets 'no-cache'. Experimental.

func CacheControl_NoTransform

func CacheControl_NoTransform() CacheControl

Sets 'no-transform'. Experimental.

func CacheControl_ProxyRevalidate

func CacheControl_ProxyRevalidate() CacheControl

Sets 'proxy-revalidate'. Experimental.

func CacheControl_SMaxAge

func CacheControl_SMaxAge(t awscdk.Duration) CacheControl

Sets 's-maxage=<duration-in-seconds>'. Experimental.

func CacheControl_SetPrivate

func CacheControl_SetPrivate() CacheControl

Sets 'private'. Experimental.

func CacheControl_SetPublic

func CacheControl_SetPublic() CacheControl

Sets 'public'. Experimental.

type DeploymentSourceContext

type DeploymentSourceContext struct {
	// The role for the handler.
	// Experimental.
	HandlerRole awsiam.IRole `field:"required" json:"handlerRole" yaml:"handlerRole"`
}

Bind context for ISources.

Example:

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

var role role

deploymentSourceContext := &deploymentSourceContext{
	handlerRole: role,
}

Experimental.

type Expires

type Expires interface {
	// The raw expiration date expression.
	// Deprecated: use core.Expiration
	Value() interface{}
}

Used for HTTP expires header, which influences downstream caches.

Does NOT influence deletion of the object.

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

expires := awscdk.Aws_s3_deployment.expires.after(duration)

See: https://docs.aws.amazon.com/AmazonS3/latest/dev/UsingMetadata.html#SysMetadata

Deprecated: use core.Expiration

func Expires_After

func Expires_After(t awscdk.Duration) Expires

Expire once the specified duration has passed since deployment time. Deprecated: use core.Expiration

func Expires_AtDate

func Expires_AtDate(d *time.Time) Expires

Expire at the specified date. Deprecated: use core.Expiration

func Expires_AtTimestamp

func Expires_AtTimestamp(t *float64) Expires

Expire at the specified timestamp. Deprecated: use core.Expiration

func Expires_FromString

func Expires_FromString(s *string) Expires

Create an expiration date from a raw date string. Deprecated: use core.Expiration

type ISource

type ISource interface {
	// Binds the source to a bucket deployment.
	// Experimental.
	Bind(scope awscdk.Construct, context *DeploymentSourceContext) *SourceConfig
}

Represents a source for bucket deployments. Experimental.

func Source_Asset

func Source_Asset(path *string, options *awss3assets.AssetOptions) ISource

Uses a local asset as the deployment source.

If the local asset is a .zip archive, make sure you trust the producer of the archive. Experimental.

func Source_Bucket

func Source_Bucket(bucket awss3.IBucket, zipObjectKey *string) ISource

Uses a .zip file stored in an S3 bucket as the source for the destination bucket contents.

Make sure you trust the producer of the archive. Experimental.

func Source_Data

func Source_Data(objectKey *string, data *string) ISource

Deploys an object with the specified string contents into the bucket.

The content can include deploy-time values (such as `snsTopic.topicArn`) that will get resolved only during deployment.

To store a JSON object use `Source.jsonData()`. Experimental.

func Source_JsonData

func Source_JsonData(objectKey *string, obj interface{}) ISource

Deploys an object with the specified JSON object into the bucket.

The object can include deploy-time values (such as `snsTopic.topicArn`) that will get resolved only during deployment. Experimental.

type ServerSideEncryption

type ServerSideEncryption string

Indicates whether server-side encryption is enabled for the object, and whether that encryption is from the AWS Key Management Service (AWS KMS) or from Amazon S3 managed encryption (SSE-S3).

Example:

websiteBucket := s3.NewBucket(this, jsii.String("WebsiteBucket"), &bucketProps{
	websiteIndexDocument: jsii.String("index.html"),
	publicReadAccess: jsii.Boolean(true),
})

s3deploy.NewBucketDeployment(this, jsii.String("DeployWebsite"), &bucketDeploymentProps{
	sources: []iSource{
		s3deploy.source.asset(jsii.String("./website-dist")),
	},
	destinationBucket: websiteBucket,
	destinationKeyPrefix: jsii.String("web/static"),
	 // optional prefix in destination bucket
	metadata: &userDefinedObjectMetadata{
		a: jsii.String("1"),
		b: jsii.String("2"),
	},
	 // user-defined metadata

	// system-defined metadata
	contentType: jsii.String("text/html"),
	contentLanguage: jsii.String("en"),
	storageClass: s3deploy.storageClass_INTELLIGENT_TIERING,
	serverSideEncryption: s3deploy.serverSideEncryption_AES_256,
	cacheControl: []cacheControl{
		s3deploy.*cacheControl.setPublic(),
		s3deploy.*cacheControl.maxAge(awscdk.Duration.hours(jsii.Number(1))),
	},
	accessControl: s3.bucketAccessControl_BUCKET_OWNER_FULL_CONTROL,
})

See: https://docs.aws.amazon.com/AmazonS3/latest/dev/UsingMetadata.html#SysMetadata

Experimental.

const (
	// 'AES256'.
	// Experimental.
	ServerSideEncryption_AES_256 ServerSideEncryption = "AES_256"
	// 'aws:kms'.
	// Experimental.
	ServerSideEncryption_AWS_KMS ServerSideEncryption = "AWS_KMS"
)

type Source

type Source interface {
}

Specifies bucket deployment source.

Usage:

Source.bucket(bucket, key)
Source.asset('/local/path/to/directory')
Source.asset('/local/path/to/a/file.zip')
Source.data('hello/world/file.txt', 'Hello, world!')
Source.data('config.json', { baz: topic.topicArn })

Example:

var websiteBucket bucket

deployment := s3deploy.NewBucketDeployment(this, jsii.String("DeployWebsite"), &bucketDeploymentProps{
	sources: []iSource{
		s3deploy.source.asset(path.join(__dirname, jsii.String("my-website"))),
	},
	destinationBucket: websiteBucket,
})

NewConstructThatReadsFromTheBucket(this, jsii.String("Consumer"), map[string]iBucket{
	// Use 'deployment.deployedBucket' instead of 'websiteBucket' here
	"bucket": deployment.deployedBucket,
})

Experimental.

type SourceConfig

type SourceConfig struct {
	// The source bucket to deploy from.
	// Experimental.
	Bucket awss3.IBucket `field:"required" json:"bucket" yaml:"bucket"`
	// An S3 object key in the source bucket that points to a zip file.
	// Experimental.
	ZipObjectKey *string `field:"required" json:"zipObjectKey" yaml:"zipObjectKey"`
	// A set of markers to substitute in the source content.
	// Experimental.
	Markers *map[string]interface{} `field:"optional" json:"markers" yaml:"markers"`
}

Source information.

Example:

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

var bucket bucket
var markers interface{}

sourceConfig := &sourceConfig{
	bucket: bucket,
	zipObjectKey: jsii.String("zipObjectKey"),

	// the properties below are optional
	markers: map[string]interface{}{
		"markersKey": markers,
	},
}

Experimental.

type StorageClass

type StorageClass string

Storage class used for storing the object.

Example:

websiteBucket := s3.NewBucket(this, jsii.String("WebsiteBucket"), &bucketProps{
	websiteIndexDocument: jsii.String("index.html"),
	publicReadAccess: jsii.Boolean(true),
})

s3deploy.NewBucketDeployment(this, jsii.String("DeployWebsite"), &bucketDeploymentProps{
	sources: []iSource{
		s3deploy.source.asset(jsii.String("./website-dist")),
	},
	destinationBucket: websiteBucket,
	destinationKeyPrefix: jsii.String("web/static"),
	 // optional prefix in destination bucket
	metadata: &userDefinedObjectMetadata{
		a: jsii.String("1"),
		b: jsii.String("2"),
	},
	 // user-defined metadata

	// system-defined metadata
	contentType: jsii.String("text/html"),
	contentLanguage: jsii.String("en"),
	storageClass: s3deploy.storageClass_INTELLIGENT_TIERING,
	serverSideEncryption: s3deploy.serverSideEncryption_AES_256,
	cacheControl: []cacheControl{
		s3deploy.*cacheControl.setPublic(),
		s3deploy.*cacheControl.maxAge(awscdk.Duration.hours(jsii.Number(1))),
	},
	accessControl: s3.bucketAccessControl_BUCKET_OWNER_FULL_CONTROL,
})

See: https://docs.aws.amazon.com/AmazonS3/latest/dev/UsingMetadata.html#SysMetadata

Experimental.

const (
	// 'STANDARD'.
	// Experimental.
	StorageClass_STANDARD StorageClass = "STANDARD"
	// 'REDUCED_REDUNDANCY'.
	// Experimental.
	StorageClass_REDUCED_REDUNDANCY StorageClass = "REDUCED_REDUNDANCY"
	// 'STANDARD_IA'.
	// Experimental.
	StorageClass_STANDARD_IA StorageClass = "STANDARD_IA"
	// 'ONEZONE_IA'.
	// Experimental.
	StorageClass_ONEZONE_IA StorageClass = "ONEZONE_IA"
	// 'INTELLIGENT_TIERING'.
	// Experimental.
	StorageClass_INTELLIGENT_TIERING StorageClass = "INTELLIGENT_TIERING"
	// 'GLACIER'.
	// Experimental.
	StorageClass_GLACIER StorageClass = "GLACIER"
	// 'DEEP_ARCHIVE'.
	// Experimental.
	StorageClass_DEEP_ARCHIVE StorageClass = "DEEP_ARCHIVE"
)

type UserDefinedObjectMetadata

type UserDefinedObjectMetadata struct {
}

Custom user defined metadata.

Example:

websiteBucket := s3.NewBucket(this, jsii.String("WebsiteBucket"), &bucketProps{
	websiteIndexDocument: jsii.String("index.html"),
	publicReadAccess: jsii.Boolean(true),
})

s3deploy.NewBucketDeployment(this, jsii.String("DeployWebsite"), &bucketDeploymentProps{
	sources: []iSource{
		s3deploy.source.asset(jsii.String("./website-dist")),
	},
	destinationBucket: websiteBucket,
	destinationKeyPrefix: jsii.String("web/static"),
	 // optional prefix in destination bucket
	metadata: &userDefinedObjectMetadata{
		a: jsii.String("1"),
		b: jsii.String("2"),
	},
	 // user-defined metadata

	// system-defined metadata
	contentType: jsii.String("text/html"),
	contentLanguage: jsii.String("en"),
	storageClass: s3deploy.storageClass_INTELLIGENT_TIERING,
	serverSideEncryption: s3deploy.serverSideEncryption_AES_256,
	cacheControl: []cacheControl{
		s3deploy.*cacheControl.setPublic(),
		s3deploy.*cacheControl.maxAge(awscdk.Duration.hours(jsii.Number(1))),
	},
	accessControl: s3.bucketAccessControl_BUCKET_OWNER_FULL_CONTROL,
})

Experimental.