iac: add backend infrastructure terraform config

.envrc.sample

@@ -0,0 +1,15 @@
+export TF_WORKSPACE=production
+
+export TF_TOKEN_app_terraform_io=***
+export TF_CLOUD_ORGANIZATION=***
+export TF_CLOUD_PROJECT=***
+
+export AWS_PROFILE=***
+export AWS_ACCESS_KEY_ID=***
+export AWS_SECRET_ACCESS_KEY=***
+
+export WOODPECKER_SERVER=***
+export WOODPECKER_TOKEN=***
+
+export GITEA_BASE_URL=***
+export GITEA_TOKEN=***

.gitignore

@@ -0,0 +1,34 @@
+# Local .terraform directories
+**/.terraform/*
+
+# .tfstate files
+*.tfstate
+*.tfstate.*
+
+# Crash log files
+crash.log
+crash.*.log
+
+# Exclude all .tfvars files, which are likely to contain sensitive data, such as
+# password, private keys, and other secrets. These should not be part of version
+# control as they are data points which are potentially sensitive and subject
+# to change depending on the environment.
+*.tfvars
+*.tfvars.json
+
+# Ignore override files as they are usually used to override resources locally and so
+# are not checked in
+override.tf
+override.tf.json
+*_override.tf
+*_override.tf.json
+
+# Include override files you do wish to add to version control using negated pattern
+# !example_override.tf
+
+# Include tfplan files to ignore the plan output of command: terraform plan -out=tfplan
+# example: *tfplan*
+
+# Ignore CLI configuration files
+.terraformrc
+terraform.rc

.terraform-version

@@ -0,0 +1 @@
+1.8.3

.terraform.lock.hcl

@@ -0,0 +1,71 @@
+# This file is maintained automatically by "terraform init".
+# Manual edits may be lost in future updates.
+
+provider "registry.terraform.io/adduc/woodpecker" {
+  version     = "0.4.0"
+  constraints = "~> 0.4.0"
+  hashes = [
+    "h1:5eWAYuzqOvSRYBQd+PY6B6QehfVjCWVrmvGRZCuoy1g=",
+    "zh:05733feedb15dbe55fe0cd00524e0a2c711e702209165dd6e972cd03e01ab6c3",
+    "zh:10a992a8ae0ace49e3835dd5d351fe73bcab8c290cec4783df83a254bc989ee0",
+    "zh:234166ba5eef01fd57668849465bbee253520d40369304d94a02658681b6460b",
+    "zh:487d11f4bdcad15b5218beb458f4a8835bf4a4bf98c8061607b0bf04f9058201",
+    "zh:49a772c34b1f0ecc18601e61491ee39c4c626143858fa5f772f9bb1c8339ee2b",
+    "zh:7d1d8a1b7fdaf5611a6f3089ea223a64bf5ef7cda0083ff2d0c272800b016ae9",
+    "zh:856f411e63aadd802e795c931d1bd4ee3095554e45bfd7ee6899bdf3d8891256",
+    "zh:890df766e9b839623b1f0437355032a3c006226a6c200cd911e15ee1a9014e9f",
+    "zh:8fbf4c6dd5b9a51b4b001488d5dd33b7da0e290ae8c2bdef70eefab613ca4a48",
+    "zh:9cf22b558fe59ae410be1d4878a7baa590a69d1500ea2a587205b210b83230b7",
+    "zh:a02554c67cdac9feb0c041087933f05f5d24d6e473088647abdac61c13b92df3",
+    "zh:ad41ed2cec4b20e321021f49b18cf3fbf160f47ddf9a985190790e0a0a83ffb9",
+    "zh:afd606da5b9c458ad8b4bc675f1572e14f8e544bf524423213ff7796277eddf2",
+    "zh:b1eb152d035612001c0e0d4391c78a679cf71c8572d8f85323022c4f3eafadb6",
+    "zh:fd87c4332e4765025cb26275b05a5e2a7c74ae5cdabdc56ca88ebcaed06be75a",
+  ]
+}
+
+provider "registry.terraform.io/go-gitea/gitea" {
+  version     = "0.3.0"
+  constraints = "~> 0.3.0"
+  hashes = [
+    "h1:9kI/rtwDrBt0Km055WJswN+PeGegoEov+1ZmyQ3QxAA=",
+    "zh:37e9c35f76a5fa71b7864aa6af45c380463b5ea2afd162109f9960bf33f7b93e",
+    "zh:4496717687dea48de96db815def8b2144b46c5c8a885c139dd45d5ddc6d13f4e",
+    "zh:4875b3e9092d4f15678f7a605469c144bf298b05c8f8527bb27b1fdf6cb6fba0",
+    "zh:51f15e0ef905619eb7236bbbdebd81f70f5e024c025a347b0224ed95c5103668",
+    "zh:5779e9276a20c294710ec57397c06fb3afd9bffd28a5de8189fd7af1ed925ea9",
+    "zh:63c2ec086260a2e15c9e77ca49344a56e4b86d52b3f502941c9562aa12345887",
+    "zh:728fd15b2f3ec1c60ad45a996bac98022198078d0368507516f3a0526fd6c503",
+    "zh:7951a3bf904f836c73b00263d2f057f5ffc123c2946508a57ca2d2a1dc3874ab",
+    "zh:8495b9e6f6ae9f49b8e80fe3ccf47f1f942745c21fa30648e98aa6fe41a647d9",
+    "zh:862888963677516379a34c4dbb2396810e1a0ac2e644704d692e4f847d487f55",
+    "zh:8b1e1badf2ea6c4fcfdf71d98a68a8ba8f0850a4c5ec5f5a451a81cfd2c2b9e2",
+    "zh:936671c9700a8549b9a4540ecec167415db704e97744ca1fd5e3ad9d48020693",
+    "zh:9b12af85486a96aedd8d7984b0ff811a4b42e3d88dad1a3fb4c0b580d04fa425",
+    "zh:c134d5445ce56de7115ceb16d65ed2082b7987273a9d17626e9f6a4e6e8d4ce9",
+    "zh:fb6fc4d41737bf2e0bd4a2e40ae2d7bddcda7361968f6b74fad00b4fd55e9506",
+  ]
+}
+
+provider "registry.terraform.io/hashicorp/aws" {
+  version     = "5.49.0"
+  constraints = "~> 5.49.0"
+  hashes = [
+    "h1:Y3xvYjzBIwYSbcnZDcs6moiy30uxRoY5oT2ExQHKG5A=",
+    "zh:0979b07cdeffb868ea605e4bbc008adc7cccb5f3ba1d3a0b794ea3e8fff20932",
+    "zh:2121a0a048a1d9419df69f3561e524b7e8a6b74ba0f57bd8948799f12b6ad3a1",
+    "zh:573362042ba0bd18e98567a4f45d91b09eb0d223513518ba04f16a646a906403",
+    "zh:57be7a4d6c362be2fa586d270203f4eac1ee239816239a9503b86ebc8fa1fef0",
+    "zh:5c72ed211d9234edd70eac9d77c3cafc7bbf819d1c28332a6d77acf227c9a23c",
+    "zh:7786d1a9781f8e8c0079bf58f4ed4aeddec0caf54ad7ddcf43c47936d545a04f",
+    "zh:82133e7d39787ee91ed41988da71beecc2ecb900b5da94b3f3d77fbc4d4dc722",
+    "zh:8cdb1c154dead85be8352afd30eaf41c59249de9e7e0a8eb4ab8e625b90a4922",
+    "zh:9b12af85486a96aedd8d7984b0ff811a4b42e3d88dad1a3fb4c0b580d04fa425",
+    "zh:ac215fd1c3bd647ae38868940651b97a53197688daefcd70b3595c84560e5267",
+    "zh:c45db22356d20e431639061a72e07da5201f4937c1df6b9f03f32019facf3905",
+    "zh:c9ba90e62db9a4708ed1a4e094849f88ce9d44c52b49f613b30bb3f7523b8d97",
+    "zh:d2be3607be2209995c80dc1d66086d527de5d470f73509e813254067e8287106",
+    "zh:e3fa20090f3cebf3911fc7ef122bd8c0505e3330ab7d541fa945fea861205007",
+    "zh:ef1b9d5c0b6279323f2ecfc322db8083e141984cfe1bb2f33c0f4934fccb69e3",
+  ]
+}

provider.aws.acm.tf

@@ -0,0 +1,13 @@
+resource "aws_acm_certificate" "created" {
+  domain_name               = var.domain_name
+  validation_method         = "DNS"
+  subject_alternative_names = []
+  validation_option {
+    domain_name       = var.domain_name
+    validation_domain = var.domain_name
+  }
+}
+
+resource "aws_acm_certificate_validation" "created" {
+  certificate_arn = aws_acm_certificate.created.arn
+}

provider.aws.cloudfront.tf

@@ -0,0 +1,49 @@
+data "aws_cloudfront_cache_policy" "caching_optimized" {
+  name = "Managed-CachingOptimized"
+}
+
+locals {
+  cloudfront_s3_origin_id = "s3origin"
+}
+
+resource "aws_cloudfront_distribution" "created" {
+  enabled             = true
+  is_ipv6_enabled     = true
+  aliases             = [var.domain_name]
+  default_root_object = var.aws_cloudfront_default_root_object
+  price_class         = var.aws_cloudfront_price_class
+  http_version        = "http2and3"
+  origin {
+    domain_name              = aws_s3_bucket.created.bucket_regional_domain_name
+    origin_id                = local.cloudfront_s3_origin_id
+    origin_access_control_id = aws_cloudfront_origin_access_control.s3_access.id
+  }
+  default_cache_behavior {
+    allowed_methods        = ["GET", "HEAD", "OPTIONS"]
+    cached_methods         = ["GET", "HEAD"]
+    cache_policy_id        = data.aws_cloudfront_cache_policy.caching_optimized.id
+    target_origin_id       = local.cloudfront_s3_origin_id
+    viewer_protocol_policy = "redirect-to-https"
+    compress               = true
+  }
+  restrictions {
+    geo_restriction {
+      restriction_type = "none"
+      locations        = []
+    }
+  }
+  viewer_certificate {
+    acm_certificate_arn      = aws_acm_certificate.created.arn
+    minimum_protocol_version = var.aws_cloudfront_minimum_protocol_version
+    ssl_support_method       = "sni-only"
+  }
+
+  depends_on = [aws_acm_certificate_validation.created]
+}
+
+resource "aws_cloudfront_origin_access_control" "s3_access" {
+  name                              = "${var.domain_name}_s3"
+  origin_access_control_origin_type = "s3"
+  signing_behavior                  = "always"
+  signing_protocol                  = "sigv4"
+}

provider.aws.data.tf

@@ -0,0 +1,37 @@
+data "aws_caller_identity" "current" {}
+
+data "aws_iam_policy_document" "s3_cloudfront_access" {
+  statement {
+    principals {
+      type        = "Service"
+      identifiers = ["cloudfront.amazonaws.com"]
+    }
+    actions = [
+      "s3:GetObject",
+      "s3:ListBucket"
+    ]
+    resources = [
+      aws_s3_bucket.created.arn,
+      "${aws_s3_bucket.created.arn}/*"
+    ]
+    condition {
+      test     = "StringEquals"
+      variable = "AWS:SourceArn"
+      values   = [aws_cloudfront_distribution.created.arn]
+    }
+  }
+}
+
+data "aws_iam_policy_document" "pubilsher" {
+  statement {
+    actions = [
+      "s3:*",
+      "cloudfront:*"
+    ]
+    resources = [
+      aws_s3_bucket.created.arn,
+      "${aws_s3_bucket.created.arn}/*",
+      aws_cloudfront_distribution.created.arn
+    ]
+  }
+}

provider.aws.iam.tf

@@ -0,0 +1,19 @@
+resource "aws_iam_user" "publisher" {
+  name          = "${var.domain_name}_publisher"
+  path          = "/${var.aws_tag_iac_identifier}/${local.workspace_env}/"
+  force_destroy = true
+}
+
+resource "aws_iam_access_key" "publisher" {
+  user = aws_iam_user.publisher.name
+}
+
+resource "aws_iam_policy" "publisher" {
+  name_prefix = "${var.domain_name}_publisher"
+  policy      = data.aws_iam_policy_document.pubilsher.json
+}
+
+resource "aws_iam_user_policy_attachment" "publisher" {
+  policy_arn = aws_iam_policy.publisher.arn
+  user       = aws_iam_user.publisher.name
+}

provider.aws.s3.tf

@@ -0,0 +1,27 @@
+resource "aws_s3_bucket" "created" {
+  bucket_prefix = var.aws_s3_use_domain_prefix ? var.domain_name : var.aws_s3_bucket_prefix
+  force_destroy = var.aws_s3_force_destroy
+}
+
+resource "aws_s3_bucket_public_access_block" "created" {
+  bucket                  = aws_s3_bucket.created.id
+  block_public_acls       = true
+  block_public_policy     = true
+  ignore_public_acls      = true
+  restrict_public_buckets = true
+}
+
+resource "aws_s3_bucket_server_side_encryption_configuration" "created" {
+  bucket = aws_s3_bucket.created.id
+  rule {
+    apply_server_side_encryption_by_default {
+      kms_master_key_id = "aws/s3"
+      sse_algorithm     = "aws:kms"
+    }
+  }
+}
+
+resource "aws_s3_bucket_policy" "created" {
+  bucket = aws_s3_bucket.created.id
+  policy = data.aws_iam_policy_document.s3_cloudfront_access.json
+}

provider.gitea.tf

@@ -0,0 +1,6 @@
+data "gitea_user" "current" {}
+
+data "gitea_repo" "source" {
+  name     = var.gitea_repo
+  username = coalesce(var.gitea_user, data.gitea_user.current.username)
+}

provider.woodpecker.tf

@@ -0,0 +1,28 @@
+locals {
+  secrets_map = {
+    aws_region              = { value = var.aws_region }
+    aws_access_key_id       = { value = aws_iam_access_key.publisher.id }
+    aws_secret_access_key   = { value = aws_iam_access_key.publisher.secret }
+    cloudfront_distribution = { value = aws_cloudfront_distribution.created.id }
+    s3_bucket               = { value = aws_s3_bucket.created.id }
+  }
+}
+
+data "woodpecker_self" "current" {}
+
+resource "woodpecker_repository" "created" {
+  name = data.gitea_repo.source.name
+  # woodpecker username can come from associated gitea username
+  owner      = coalesce(var.woodpecker_user, var.gitea_user, data.woodpecker_self.current.login)
+  visibility = data.gitea_repo.source.private ? "Public" : "Private"
+}
+
+resource "woodpecker_repository_secret" "secrets" {
+  count = length(keys(local.secrets_map))
+
+  repo_owner = woodpecker_repository.created.owner
+  repo_name  = woodpecker_repository.created.name
+  name       = upper(keys(local.secrets_map)[count.index])
+  value      = values(local.secrets_map)[count.index].value
+  events     = try(values(local.secrets_map)[count.index].events, var.woodpecker_secrets_events, [])
+}

terraform.backend.remote.tfvars.sample

@@ -0,0 +1,2 @@
+organization = "bdeshi-space"
+workspaces { prefix = "resume-manpage-" }

terraform.outputs.tf

@@ -0,0 +1,40 @@
+output "aws_account_id" {
+  value       = data.aws_caller_identity.current.account_id
+  description = "ID of the AWS account."
+}
+
+output "s3_bucket" {
+  value       = aws_s3_bucket.created.id
+  description = "name of the created S3 bucket."
+}
+
+output "cloudfront_distribution" {
+  value       = aws_cloudfront_distribution.created.id
+  description = "ID of the created CloudFront distribution."
+}
+
+output "acm_certificate_arn" {
+  value       = aws_acm_certificate.created.arn
+  description = "ARN of the created ACM certificate."
+}
+
+output "acm_validation_options" {
+  value       = aws_acm_certificate.created.domain_validation_options
+  description = "ACM domain validation records."
+}
+
+output "iam_access_key_id" {
+  value       = aws_iam_access_key.publisher.id
+  description = "access key ID of the publisher IAM user."
+}
+
+output "iam_secret_access_key" {
+  value       = aws_iam_access_key.publisher.secret
+  sensitive   = true
+  description = "secret access key of the publisher IAM user."
+}
+
+output "domain_name" {
+  value       = var.domain_name
+  description = "target publishing domain name."
+}

terraform.tf

@@ -0,0 +1,51 @@
+terraform {
+  required_version = "~> 1.8.0"
+
+  required_providers {
+    aws = {
+      source  = "hashicorp/aws"
+      version = "~>5.49.0"
+    }
+    woodpecker = {
+      source  = "adduc/woodpecker"
+      version = "~> 0.4.0"
+    }
+    gitea = {
+      source  = "go-gitea/gitea"
+      version = "~>0.3.0"
+    }
+  }
+
+  backend "remote" {}
+
+  # cloud {
+  #   organization = collected from TF_CLOUD_ORGANIZATION env
+  #   workspaces {
+  #     project = collected from TF_CLOUD_PROJECT env
+  #   }
+  # }
+
+}
+
+provider "aws" {
+  # profile = collected from AWS_PROFILE env
+  region = var.aws_region
+  default_tags {
+    tags = {
+      "ManagedBy"       = var.aws_tag_iac_identifier
+      "iac/project"     = var.aws_tag_iac_project_name
+      "iac/source"      = "${data.gitea_repo.source.ssh_url}/${var.aws_tag_iac_project_subpath}"
+      "iac/environment" = local.workspace_env
+    }
+  }
+}
+
+provider "woodpecker" {
+  # server = collected from WOODPECKER_SERVER env
+  # token =  collected from WOODPECKER_TOKEN env
+}
+
+provider "gitea" {
+  # base_url = collected from GITEA_BASE_URL env
+  # token = collected from GITEA_TOKEN env
+}

terraform.tfvars.sample

@@ -0,0 +1,5 @@
+domain_name                 = "sammay.sarkar.website"
+aws_tag_iac_project_name    = "resume-manpage"
+aws_tag_iac_project_subpath = "/iac"
+gitea_repo                  = "resume-manpage"
+woodpecker_secrets_events   = ["push", "deployment", "manual"]

terraform.variables.tf

@@ -0,0 +1,103 @@
+####################
+####   commons  ####
+####################
+
+variable "domain_name" {
+  type        = string
+  description = "domain name where the built site is published."
+}
+
+
+################
+####   aws  ####
+################
+
+variable "aws_tag_iac_identifier" {
+  type        = string
+  default     = "iac/terraform"
+  description = "IaC tool name added as a tag to AWS resources, also used in iam user path."
+}
+
+variable "aws_tag_iac_project_name" {
+  type        = string
+  description = "IaC project name added as a tag to AWS resources."
+}
+
+variable "aws_tag_iac_project_subpath" {
+  type        = string
+  description = "IaC project source path added as a tag to AWS resources."
+}
+
+variable "aws_region" {
+  type        = string
+  default     = "us-east-1"
+  description = "AWS region passed to AWS provider."
+}
+
+variable "aws_s3_bucket_prefix" {
+  type        = string
+  default     = null
+  description = "AWS S3 bucket name prefix."
+}
+
+variable "aws_s3_use_domain_prefix" {
+  type        = bool
+  default     = true
+  description = "use var.domain_name as AWS S3 bucket name prefix."
+}
+
+variable "aws_s3_force_destroy" {
+  type        = bool
+  default     = true
+  description = "delete all bucket objects to allow clean bucket destroy operation."
+}
+
+variable "aws_cloudfront_default_root_object" {
+  type        = string
+  default     = "index.html"
+  description = "default root object name for the CloudFront distribution."
+}
+
+variable "aws_cloudfront_price_class" {
+  type        = string
+  default     = "PriceClass_200"
+  description = "price class for the CloudFront distribution: PriceClass_All|PriceClass_200|PriceClass_100."
+}
+
+variable "aws_cloudfront_minimum_protocol_version" {
+  type        = string
+  default     = "TLSv1.2_2021"
+  description = "name of the minimum SSL protocol version used by CloudFront for HTTPS requests."
+}
+
+################
+#### gitea  ####
+################
+
+variable "gitea_repo" {
+  type        = string
+  description = "name of source Gitea repository."
+}
+
+variable "gitea_user" {
+  type        = string
+  default     = null
+  description = "username of Gitea repo owner."
+}
+
+
+################
+#  woodpecker  #
+################
+
+variable "woodpecker_user" {
+  type        = string
+  default     = null
+  description = "username of Woodpecker server."
+}
+
+variable "woodpecker_secrets_events" {
+  type        = list(string)
+  default     = ["push"]
+  description = "default list of allowed events for Woodpecker secrets created."
+}

terraforn.locals.tf

@@ -0,0 +1,9 @@
+locals {
+  # terraform remote backend prefix key means local and remote
+  # wokspace names can differ.
+  # assuming workspace are named as `prefix+env`, this section
+  # extracts the env from both local or remote workspace names.
+  _workspace_name_segments       = split("-", terraform.workspace)
+  _workspace_name_segments_count = length(local._workspace_name_segments)
+  workspace_env                  = local._workspace_name_segments[local._workspace_name_segments_count - 1]
+}