Convert subdomains to HTTP redirect

GitHub pages only supports a single custom domain, so CNAMEs for
www.rust-embedded.com, embedonomicon.rust-embedded.com, and
www.areweembeddedyet.com were not properly redirecting. Create S3
buckets to perform HTTP redirects instead.

Signed-off-by: Nick Stevens <[email protected]>

Author: nastevens

route53.tf

@@ -79,12 +79,23 @@ resource "aws_route53_record" "rust_embedded_com_a" {
   }
 }
 
+resource "aws_s3_bucket" "www_rust_embedded_com_redirect" {
+  bucket = "www.rust-embedded.com"
+  acl = "public-read"
+  website {
+    redirect_all_requests_to = "rust-embedded.org"
+  }
+}
+
 resource "aws_route53_record" "rust_embedded_com_www" {
-  zone_id = "${aws_route53_zone.rust_embedded_com.zone_id}"
-  name = "www.rust-embedded.com."
-  type = "CNAME"
-  ttl = "300"
-  records = [ "rust-embedded.org" ]
+  zone_id   = "${aws_route53_zone.rust_embedded_com.zone_id}"
+  name      = "www.rust-embedded.com."
+  type      = "A"
+  alias {
+    name    = "${aws_s3_bucket.www_rust_embedded_com_redirect.website_domain}"
+    zone_id = "${aws_s3_bucket.www_rust_embedded_com_redirect.hosted_zone_id}"
+    evaluate_target_health = false
+  }
 }
 
 resource "aws_route53_record" "rust_embedded_com_book" {
@@ -95,12 +106,23 @@ resource "aws_route53_record" "rust_embedded_com_book" {
   records = [ "book.rust-embedded.org" ]
 }
 
+resource "aws_s3_bucket" "embedonomicon_rust_embedded_com_redirect" {
+  bucket = "embedonomicon.rust-embedded.com"
+  acl = "public-read"
+  website {
+    redirect_all_requests_to = "embedonomicon.rust-embedded.org"
+  }
+}
+
 resource "aws_route53_record" "rust_embedded_com_embedonomicon" {
-  zone_id = "${aws_route53_zone.rust_embedded_com.zone_id}"
-  name = "embedonomicon.rust-embedded.com."
-  type = "CNAME"
-  ttl = "300"
-  records = [ "embedonomicon.rust-embedded.org" ]
+  zone_id   = "${aws_route53_zone.rust_embedded_com.zone_id}"
+  name      = "embedonomicon.rust-embedded.com."
+  type      = "A"
+  alias {
+    name    = "${aws_s3_bucket.embedonomicon_rust_embedded_com_redirect.website_domain}"
+    zone_id = "${aws_s3_bucket.embedonomicon_rust_embedded_com_redirect.hosted_zone_id}"
+    evaluate_target_health = false
+  }
 }
 
 // areweembeddedyet.com
@@ -128,10 +150,21 @@ resource "aws_route53_record" "areweembeddedyet_com_a" {
   }
 }
 
+resource "aws_s3_bucket" "www_areweembeddedyet_com_redirect" {
+  bucket = "www.areweembeddedyet.com"
+  acl = "public-read"
+  website {
+    redirect_all_requests_to = "rust-embedded.org"
+  }
+}
+
 resource "aws_route53_record" "areweembeddedyet_com_www" {
   zone_id = "${aws_route53_zone.areweembeddedyet_com.zone_id}"
   name = "www.areweembeddedyet.com."
-  type = "CNAME"
-  ttl = "300"
-  records = [ "rust-embedded.org" ]
+  type = "A"
+  alias {
+    name    = "${aws_s3_bucket.www_areweembeddedyet_com_redirect.website_domain}"
+    zone_id = "${aws_s3_bucket.www_areweembeddedyet_com_redirect.hosted_zone_id}"
+    evaluate_target_health = false
+  }
 }