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S3

What is Amazon S3?

  • Amazon Simple Storage Service (Amazon S3) is storage for the Internet. It is designed to make web-scale computing easier.
  • Amazon S3 has a simple web services interface that you can use to store and retrieve any amount of data, at any time, from anywhere on the web.

Advantages of using Amazon S3

  • Creating buckets : Create and name a bucket that stores data.
  • Storing data : Store an infinite amount of data in a bucket. Upload as many objects as you like into an Amazon S3 bucket.
  • Downloading data : Download your data or enable others to do so.
  • Permissions : Grant or deny access to others who want to upload or download data into your Amazon S3 bucket.
  • Standard interfaces – Use standards-based REST and SOAP interfaces designed to work with any internet-development toolkit.

Amazon S3 concepts Buckets if the object named photos/puppy.jpg is stored in the awsexamplebucket1 bucket in the US West (Oregon) Region, then it is addressable using the URL https://awsexamplebucket1.s3.us-west-2.amazonaws.com/photos/puppy.jpg.

Objects Objects are the fundamental entities stored in Amazon S3. Objects consist of object data and metadata. The data portion is opaque to Amazon S3.

Keys A key is the unique identifier for an object within a bucket. Every object in a bucket has exactly one key. The combination of a bucket, key, and version ID uniquely identify each object.

S3 with Amplify

To start provisioning storage resources in the backend, go to your project directory and execute the command: amplify add storage

Enter the following when prompted: ? Please select from one of the below mentioned services: Content (Images, audio, video, etc.) ? You need to add auth (Amazon Cognito) to your project in order to add storage for user files. Do you want to add auth now? Yes ? Do you want to use the default authentication and security configuration? Default configuration ? How do you want users to be able to sign in? Username ? Do you want to configure advanced settings? No, I am done. ? Please provide a friendly name for your resource that will be used to label this category in the project: S3friendlyName ? Please provide bucket name: storagebucketname ? Who should have access: Auth and guest users ? What kind of access do you want for Authenticated users? create/update, read, delete ? What kind of access do you want for Guest users? create/update, read, delete ? Do you want to add a Lambda Trigger for your S3 Bucket? No

To push your changes to the cloud, execute the command:
amplify push

Add these libraries into the dependencies block:

 dependencies {
 implementation 'com.amplifyframework:aws-storage-s3:1.24.0'
 implementation 'com.amplifyframework:aws-auth-cognito:1.24.0'
 }