terraform-aws-static-site/cloudfront.tf at master · labd/terraform-aws-static-site · GitHub

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resource "aws_cloudfront_origin_access_identity" "cloudfront_identity" {
  count   = var.enabled ? 1 : 0
  comment = "${var.description} CloudFront"
}

resource "aws_cloudfront_distribution" "cloudfront_basicauth" {
  count               = length(var.authentication) > 0 ? var.enabled ? 1 : 0 : 0
  enabled             = true
  comment             = var.description
  default_root_object = "index.html"
  aliases             = var.domains
  price_class         = "PriceClass_100" # Run in EU and USA (no ASIA)
  wait_for_deployment = false
  web_acl_id          = length(var.aws_waf_rule_id) > 0 ? aws_waf_web_acl.main.0.id : ""

  origin {
    domain_name = aws_s3_bucket.website.0.bucket_domain_name
    origin_id   = "s3-public"

    s3_origin_config {
      origin_access_identity = aws_cloudfront_origin_access_identity.cloudfront_identity.0.cloudfront_access_identity_path
    }
  }

  /* DEFAULT */
  default_cache_behavior {
    target_origin_id       = "s3-public"
    viewer_protocol_policy = "redirect-to-https"
    allowed_methods        = ["DELETE", "GET", "HEAD", "OPTIONS", "PATCH", "POST", "PUT"]
    compress               = true
    cached_methods         = ["GET", "HEAD"]

    forwarded_values {
      query_string = false

      headers = [
        "Access-Control-Request-Headers",
        "Access-Control-Request-Method",
        "Authorization",
        "Origin",
      ]

      cookies {
        forward = "none"
      }
    }

    lambda_function_association {
      event_type = "viewer-request"
      lambda_arn = aws_lambda_function.basicauth.0.qualified_arn
    }
  }

  custom_error_response {
    error_code         = 404
    response_code      = 200
    response_page_path = "/${var.index_document}"
  }

  custom_error_response {
    error_code            = 500
    error_caching_min_ttl = 5
  }

  custom_error_response {
    error_code            = 502
    error_caching_min_ttl = 5
  }

  custom_error_response {
    error_code            = 503
    error_caching_min_ttl = 5
  }

  custom_error_response {
    error_code            = 504
    error_caching_min_ttl = 10
  }

  restrictions {
    geo_restriction {
      restriction_type = "none"
    }
  }

  viewer_certificate {
    cloudfront_default_certificate = false
    acm_certificate_arn            = var.ssl_certificate_arn
    minimum_protocol_version       = "TLSv1.2_2018"
    ssl_support_method             = "sni-only"
  }

  depends_on = [aws_waf_web_acl.main]
}

resource "aws_cloudfront_distribution" "cloudfront" {
  count               = length(var.authentication) > 0 ? 0 : var.enabled ? 1 : 0
  enabled             = true
  comment             = var.description
  default_root_object = "index.html"
  aliases             = var.domains
  price_class         = "PriceClass_100" # Run in EU and USA (no ASIA)
  wait_for_deployment = false
  web_acl_id          = length(var.aws_waf_rule_id) > 0 ? aws_waf_web_acl.main.0.id : ""

  origin {
    domain_name = aws_s3_bucket.website.0.bucket_domain_name
    origin_id   = "s3-public"

    s3_origin_config {
      origin_access_identity = aws_cloudfront_origin_access_identity.cloudfront_identity.0.cloudfront_access_identity_path
    }
  }

  /* DEFAULT */
  default_cache_behavior {
    target_origin_id       = "s3-public"
    viewer_protocol_policy = "redirect-to-https"

    allowed_methods = ["DELETE", "GET", "HEAD", "OPTIONS", "PATCH", "POST", "PUT"]
    compress        = true

    cached_methods = ["GET", "HEAD"]
    min_ttl        = 0
    default_ttl    = 3600
    max_ttl        = 86400

    forwarded_values {
      query_string = false

      headers = [
        "Access-Control-Request-Headers",
        "Access-Control-Request-Method",
        "Origin",
      ]

      cookies {
        forward = "none"
      }
    }
  }

  custom_error_response {
    error_code         = 404
    response_code      = 200
    response_page_path = "/${var.index_document}"
  }

  custom_error_response {
    error_code            = 500
    error_caching_min_ttl = 5
  }

  custom_error_response {
    error_code            = 502
    error_caching_min_ttl = 5
  }

  custom_error_response {
    error_code            = 503
    error_caching_min_ttl = 5
  }

  custom_error_response {
    error_code            = 504
    error_caching_min_ttl = 10
  }

  restrictions {
    geo_restriction {
      restriction_type = "none"
    }
  }

  viewer_certificate {
    cloudfront_default_certificate = false
    acm_certificate_arn            = var.ssl_certificate_arn
    minimum_protocol_version       = "TLSv1.2_2018"
    ssl_support_method             = "sni-only"
  }

  depends_on = [aws_waf_web_acl.main]
}