krebs: move hosts to dedeicated file

1 files changed, 36 insertions, 0 deletions

diff --git a/krebs/3modules/hosts.nix b/krebs/3modules/hosts.nix
new file mode 100644
index 000000000..a95557b3d
--- /dev/null
+++ b/krebs/3modules/hosts.nix
@@ -0,0 +1,36 @@
+with import <stockholm/lib>;
+{ config, ... }: let
+  # TODO dedup functions with ./retiolum-hosts.nix
+  check = hostname: any (domain: hasSuffix ".${domain}" hostname) domains;
+  domains = attrNames (filterAttrs (_: eq "hosts") config.krebs.dns.providers);
+in {
+
+  options = {
+    krebs.hosts = mkOption {
+      default = {};
+      type = types.attrsOf types.host;
+    };
+  };
+
+  config = {
+    networking.extraHosts =
+      concatStringsSep
+        "\n"
+        (flatten
+          (mapAttrsToList
+            (hostname: host:
+              mapAttrsToList
+                (netname: net: let
+                  aliases = longs ++ shorts;
+                  longs = filter check net.aliases;
+                  shorts = let s = ".${config.krebs.dns.search-domain}"; in
+                    map (removeSuffix s) (filter (hasSuffix s) longs);
+                in
+                  optionals
+                    (aliases != [])
+                    (map (addr: "${addr} ${toString aliases}") net.addrs))
+                (filterAttrs (name: host: host.aliases != []) host.nets))
+            config.krebs.hosts));
+  };
+
+}