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Manage an S3 Bucket Lifecycle

In this example you are going to create an AWS S3 bucket and then report its information to Port as an S3 bucket entity.

Prerequisites​

You will need to create a developer environment blueprint to follow this example:

{
  "identifier": "s3Bucket",
  "description": "",
  "title": "S3 Bucket",
  "icon": "Bucket",
  "schema": {
    "properties": {
      "isPrivate": {
        "type": "boolean",
        "title": "Is private?"
      }
    },
    "required": []
  },
  "mirrorProperties": {},
  "calculationProperties": {},
  "relations": {}
}

Here is the complete main.tf file:

Complete Terraform definition file
terraform {
  required_providers {
    port = {
      source  = "port-labs/port-labs"
      version = "~> 2.0.3"
    }
  }
}

provider "aws" {
  access_key = "YOUR_ACCESS_KEY_ID"
  secret_key = "YOUR_SECRET_ACCESS_KEY"
  region     = "eu-west-1"
}

provider "port" {
  client_id = "YOUR_CLIENT_ID"     # or set the environment variable PORT_CLIENT_ID
  secret    = "YOUR_CLIENT_SECRET" # or set the environment variable PORT_CLIENT_SECRET
  base_url  = "https://api.getport.io"
}

resource "aws_s3_bucket" "port-terraform-example-bucket" {
  bucket = "my-port-terraform-example-bucket"
}

resource "aws_s3_bucket_acl" "port-terraform-example-bucket-acl" {
  bucket = aws_s3_bucket.port-terraform-example-bucket.id
  acl    = "private"
}

resource "port_entity" "s3_bucket" {
  depends_on = [
    aws_s3_bucket.port-terraform-example-bucket
  ]

  identifier = aws_s3_bucket.port-terraform-example-bucket.bucket
  title      = aws_s3_bucket.port-terraform-example-bucket.bucket
  blueprint  = "s3Bucket"

  properties = {
    string_props = {
      "isPrivate" = aws_s3_bucket_acl.port-terraform-example-bucket-acl.acl == "private" ? true : false
    }
  }
}
Selecting a Port API URL by account region

The port_region, port.baseUrl, portBaseUrl, port_base_url and OCEAN__PORT__BASE_URL parameters are used to select which instance of Port API will be used.

Port exposes two API instances, one for the EU region of Port, and one for the US region of Port.

To use this example yourself, simply replace the placeholders for access_key, secret_key, client_id and secret and then run the following commands to setup your new backend, create the new infrastructure and update the software catalog:

# install modules and create an initial state
terraform init
# To view Terraform's planned changes based on your .tf definition file:
terraform plan
# To apply the changes and update the catalog
terraform apply

Let's break down the definition file and understand the different parts:

Module imports​

This part includes importing and setting up the required Terraform providers and modules:

terraform {
  required_providers {
    port = {
      source  = "port-labs/port-labs"
      version = "~> 2.0.3"
    }
  }
}

provider "aws" {
  access_key = "YOUR_ACCESS_KEY_ID"
  secret_key = "YOUR_SECRET_ACCESS_KEY"
  region     = "eu-west-1"
}

provider "port" {
  client_id = "YOUR_CLIENT_ID"     # or set the environment variable PORT_CLIENT_ID
  secret    = "YOUR_CLIENT_SECRET" # or set the environment variable PORT_CLIENT_SECRET
  base_url  = "https://api.getport.io"
}
Selecting a Port API URL by account region

The port_region, port.baseUrl, portBaseUrl, port_base_url and OCEAN__PORT__BASE_URL parameters are used to select which instance of Port API will be used.

Port exposes two API instances, one for the EU region of Port, and one for the US region of Port.

Defining the S3 bucket and bucket ACLs​

This part includes defining the S3 bucket and attaching an ACL policy:

resource "aws_s3_bucket" "port-terraform-example-bucket" {
  bucket = "my-port-terraform-example-bucket"
}

resource "aws_s3_bucket_acl" "port-terraform-example-bucket-acl" {
  bucket = aws_s3_bucket.port-terraform-example-bucket.id
  acl    = "public-read"
}

Creating the S3 bucket entity matching the new bucket​

This part includes configuring the s3Bucket blueprint and creating an entity for our new bucket:

resource "port_entity" "s3_bucket" {
  depends_on = [
    aws_s3_bucket.port-terraform-example-bucket
  ]

  identifier = aws_s3_bucket.port-terraform-example-bucket.bucket
  title      = aws_s3_bucket.port-terraform-example-bucket.bucket
  blueprint  = "s3Bucket"

  properties = {
    string_props = {
      "isPrivate" = aws_s3_bucket_acl.port-terraform-example-bucket-acl.acl == "private" ? true : false
    }
  }
}
Terraform dependencies

Note how we use a depends_on block on the new s3 entity because the entity relies on values that will only be available after the S3 bucket is created.

Result​

After running terraform apply you will see the new S3 bucket in AWS, and the matching s3Bucket entity in Port.

Continue reading to learn how to make updates and how to cleanup.

Updating the S3 bucket and the matching entity​

Notice how we defined the isPrivate property of the bucket entity:

properties = {
    string_props = {
      "isPrivate" = aws_s3_bucket_acl.port-terraform-example-bucket-acl.acl == "private" ? true : false
    }
}

Since the initial bucket we created was configured as private, the value of the property is true.

Let's modify the bucket policy:

resource "aws_s3_bucket_acl" "port-terraform-example-bucket-acl" {
  bucket = aws_s3_bucket.port-terraform-example-bucket.id
  acl    = "public-read" # Changed from "private"
}

And now by running terraform apply, both the bucket policy will change, as well as the isPrivate property of the matching entity.

Cleanup​

To cleanup your environment, you can run the command terraform destroy, which will delete all of the resources you created in this example (including the S3 bucket and matching Port entity).