Bucket

Reference doc for the `sst.aws.Bucket` component.

The Bucket component lets you add an AWS S3 Bucket to your app.

Minimal example

const bucket = new sst.aws.Bucket("MyBucket");

Public read access

Enable public read access for all the files in the bucket. Useful for hosting public files.

new sst.aws.Bucket("MyBucket", {
  access: "public"
});

Add a subscriber

bucket.subscribe("src/subscriber.handler");

Link the bucket to a resource

You can link the bucket to other resources, like a function or your Next.js app.

new sst.aws.Nextjs("MyWeb", {
  link: [bucket]
});

Once linked, you can generate a pre-signed URL to upload files in your app.

import { Resource } from "sst";
import { getSignedUrl } from "@aws-sdk/s3-request-presigner";
import { S3Client, PutObjectCommand } from "@aws-sdk/client-s3";

const command = new PutObjectCommand({
   Key: "file.txt",
   Bucket: Resource.MyBucket.name
 });
 await getSignedUrl(new S3Client({}), command);

Constructor

new Bucket(name, args?, opts?)

Parameters

name string
args? BucketArgs
opts? ComponentResourceOptions

BucketArgs

access?

Type Input<“public” | “cloudfront”>

Enable public read access for all the files in the bucket. By default, no access is granted.

This adds a statement to the bucket policy that either allows public access or just cloudfront access.

{
  access: "public"
}

cors?

Type Input<false | Object>

allowHeaders?
allowMethods?
allowOrigins?
exposeHeaders?
maxAge?

Default true

The CORS configuration for the bucket. Defaults to true, which is the same as:

{
  cors: {
    allowHeaders: ["*"],
    allowOrigins: ["*"],
    allowMethods: ["DELETE", "GET", "HEAD", "POST", "PUT"],
    exposeHeaders: [],
    maxAge: "0 seconds"
  }
}

cors.allowHeaders?

Type Input<Input<string>[]>

Default [”*”]

The HTTP headers that origins can include in requests to the bucket.

{
  cors: {
    allowHeaders: ["date", "keep-alive", "x-custom-header"]
  }
}

cors.allowMethods?

Type Input<Input<“GET” | “POST” | “PUT” | “DELETE” | “HEAD”>[]>

Default [“DELETE” | “GET” | “HEAD” | “POST” | “PUT”]

The HTTP methods that are allowed when calling the bucket.

{
  cors: {
    allowMethods: ["GET", "POST", "DELETE"]
  }
}

cors.allowOrigins?

Type Input<Input<string>[]>

Default [”*”]

The origins that can access the bucket.

{
  cors: {
    allowOrigins: ["https://www.example.com", "http://localhost:60905"]
  }
}

Or the wildcard for all origins.

{
  cors: {
    allowOrigins: ["*"]
  }
}

cors.exposeHeaders?

Type Input<Input<string>[]>

Default []

The HTTP headers you want to expose to an origin that calls the bucket.

{
  cors: {
    exposeHeaders: ["date", "keep-alive", "x-custom-header"]
  }
}

Type Input<“${number} minute” | “${number} minutes” | “${number} hour” | “${number} hours” | “${number} second” | “${number} seconds” | “${number} day” | “${number} days”>

Default “0 seconds”

The maximum amount of time the browser can cache results of a preflight request. By default the browser doesn’t cache the results. The maximum value is 86400 seconds or 1 day.

{
  cors: {
    maxAge: "1 day"
  }
}

transform?

Type Object

bucket?
cors?
policy?
publicAccessBlock?
versioning?

Transform how this component creates its underlying resources.

transform.bucket?

Type BucketV2Args | (args: BucketV2Args, opts: ComponentResourceOptions, name: string) => void

Transform the S3 Bucket resource.

transform.cors?

Type BucketCorsConfigurationV2Args | (args: BucketCorsConfigurationV2Args, opts: ComponentResourceOptions, name: string) => void

Transform the S3 Bucket CORS configuration resource.

transform.policy?

Type BucketPolicyArgs | (args: BucketPolicyArgs, opts: ComponentResourceOptions, name: string) => void

Transform the S3 Bucket Policy resource.

transform.publicAccessBlock?

Type false | BucketPublicAccessBlockArgs | (args: BucketPublicAccessBlockArgs, opts: ComponentResourceOptions, name: string) => void

Transform the public access block resource that’s attached to the Bucket.

Returns false if the public access block resource should not be created.

transform.versioning?

Type BucketVersioningV2Args | (args: BucketVersioningV2Args, opts: ComponentResourceOptions, name: string) => void

Transform the S3 Bucket versioning resource.

versioning?

Type Input<boolean>

Default false

Enable versioning for the bucket.

Bucket versioning enables you to store multiple versions of an object, protecting against accidental deletion or overwriting.

{
  versioning: true
}

Properties

arn

Type Output<string>

The ARN of the S3 Bucket.

domain

Type Output<string>

The domain name of the bucket. Has the format ${bucketName}.s3.amazonaws.com.

name

Type Output<string>

The generated name of the S3 Bucket.

nodes

Type Object

bucket

The underlying resources this component creates.

nodes.bucket

Type Output<BucketV2>

The Amazon S3 bucket.

SDK

Use the SDK in your runtime to interact with your infrastructure.

Methods

notify

notify(args)

Parameters

args BucketNotificationsArgs
The configuration for the event notifications.

Returns BucketNotificationsOutput

Subscribe to event notifications from this bucket.

Notify a function.

bucket.notify({
  notifications: [
    {
      name: "MySubscriber",
      function: "src/subscriber.handler",
    }
  ]
});

Notify on specific S3 events.

bucket.notify({
  notifications: [
    {
      name: "MySubscriber",
      function: "src/subscriber.handler",
      events: ["s3:ObjectCreated:*", "s3:ObjectRemoved:*"],
    }
  ]
});

Notify on specific S3 events from a specific folder.

bucket.notify({
  notifications: [
    {
      name: "MySubscriber",
      function: "src/subscriber.handler",
      events: ["s3:ObjectCreated:*", "s3:ObjectRemoved:*"],
      filterPrefix: "images/",
    }
  ]
});

Notify a queue. For example, let’s say you have a queue.

const myQueue = sst.aws.Queue("MyQueue");

You can notify it by passing in the queue.

bucket.notify({
  notifications: [
    {
      name: "MySubscriber",
      queue: myQueue,
    }
  ]
});

Notify a SNS topic. For example, let’s say you have a topic.

const myTopic = sst.aws.SnsTopic("MyTopic");

You can notify it by passing in the topic.

bucket.notify({
  notifications: [
    {
      name: "MySubscriber",
      topic: myTopic,
    }
  ]
});

static get

Bucket.get(name, bucketName, opts?)

Parameters

name string
The name of the component.
bucketName string
The name of the existing S3 Bucket.
opts? ComponentResourceOptions

Returns Bucket

Reference an existing bucket with the given bucket name. This is useful when you create a bucket in one stage and want to share it in another stage. It avoids having to create a new bucket in the other stage.

Imagine you create a bucket in the dev stage. And in your personal stage frank, instead of creating a new bucket, you want to share the bucket from dev.

const bucket = $app.stage === "frank"
  ? sst.aws.Bucket.get("MyBucket", "app-dev-mybucket-12345678")
  : new sst.aws.Bucket("MyBucket");

Here app-dev-mybucket-12345678 is the auto-generated bucket name for the bucket created in the dev stage. You can find this by outputting the bucket name in the dev stage.

return {
  bucket: bucket.name
};

BucketNotificationsArgs

notifications

Type Input<Input<Object>[]>

events?
filterPrefix?
filterSuffix?
function?
name
queue?
topic?

A list of subscribers that’ll be notified when events happen in the bucket.

notifications[].events?

Default All S3 events

A list of S3 event types that’ll trigger the notification.

{
  events: ["s3:ObjectCreated:*", "s3:ObjectRemoved:*"]
}

notifications[].filterPrefix?

Type Input<string>

An S3 object key prefix that will trigger the notification.

To filter for all the objects in the images/ folder.

{
  filterPrefix: "images/"
}

notifications[].filterSuffix?

Type Input<string>

An S3 object key suffix that will trigger the notification.

To filter for all the objects with the .jpg suffix.

{
 filterSuffix: ".jpg"
}

notifications[].function?

Type Input<string | FunctionArgs | “arn:aws:lambda:${string}”>

The function that’ll be notified.

{
  name: "MySubscriber",
  function: "src/subscriber.handler",
}

Customize the subscriber function. The link ensures the subscriber can access the bucket.

{
  name: "MySubscriber",
  function: {
    handler: "src/subscriber.handler",
    timeout: "60 seconds",
    link: [bucket]
  }
}

Or pass in the ARN of an existing Lambda function.

{
  name: "MySubscriber",
  function: "arn:aws:lambda:us-east-1:123456789012:function:my-function",
}

notifications[].name

Type Input<string>

The name of the subscriber.

notifications[].queue?

Type Input<string | Queue>

The queue that’ll be notified.

For example, let’s say you have a queue.

const myQueue = sst.aws.Queue("MyQueue");

You can subscribe to this bucket with it.

{
  name: "MySubscriber",
  queue: myQueue,
}

Or pass in the ARN of an existing SQS queue.

{
  name: "MySubscriber",
  queue: "arn:aws:sqs:us-east-1:123456789012:my-queue",
}

notifications[].topic?

Type Input<string | SnsTopic>

The topic that’ll be notified.

For example, let’s say you have a topic.

const myTopic = sst.aws.SnsTopic("MyTopic");

You can subscribe to this bucket with it.

{
  name: "MySubscriber",
  topic: myTopic,
}

Or pass in the ARN of an existing SNS topic.

{
  name: "MySubscriber",
  topic: "arn:aws:sns:us-east-1:123456789012:my-topic",
}

transform?

Type Object

notification?

Transform how this notification creates its underlying resources.

functions
notification

The underlying resources this function creates.

nodes.functions

Type Output<Function[]>

The functions that will be notified.

nodes.notification

Type BucketNotification

The notification resource that’s created.