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main.tf
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main.tf
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locals {
origin_id = "web-app-bucket"
}
resource "aws_cloudfront_origin_access_control" "default" {
origin_access_control_origin_type = "s3"
name = var.origin_access_control_name
signing_behavior = "always"
signing_protocol = "sigv4"
}
resource "aws_cloudfront_distribution" "web_app" {
enabled = true
is_ipv6_enabled = true
default_root_object = "index.html"
price_class = "PriceClass_100"
comment = "CloudFront distribution for the S3-backed web app"
aliases = [var.distribution_domain_alias]
origin {
domain_name = var.web_app_bucket.bucket_regional_domain_name
origin_id = local.origin_id
origin_access_control_id = aws_cloudfront_origin_access_control.default.id
}
default_cache_behavior {
min_ttl = 0
default_ttl = 0
max_ttl = 0
viewer_protocol_policy = "redirect-to-https"
allowed_methods = ["GET", "HEAD", "OPTIONS"]
cached_methods = ["GET", "HEAD"]
target_origin_id = local.origin_id
forwarded_values {
query_string = false
cookies {
forward = "none"
}
}
}
restrictions {
geo_restriction {
locations = []
restriction_type = "none"
}
}
viewer_certificate {
acm_certificate_arn = var.tls_certificate.arn
ssl_support_method = "sni-only"
}
tags = {
Name = var.distribution_name
}
}
data "aws_iam_policy_document" "web_app_bucket" {
statement {
actions = ["s3:GetObject"]
resources = ["${var.web_app_bucket.arn}/*"]
principals {
type = "Service"
identifiers = ["cloudfront.amazonaws.com"]
}
condition {
test = "StringEquals"
variable = "aws:SourceArn"
values = [aws_cloudfront_distribution.web_app.arn]
}
}
}
resource "aws_s3_bucket_policy" "web_app_bucket_policy" {
bucket = var.web_app_bucket.id
policy = data.aws_iam_policy_document.web_app_bucket.json
}