fix record pre-processing

coredns_bridge.js

@@ -3,6 +3,7 @@ const client = new Etcd3({
     hosts: 'http://127.0.0.1:2379',
 });
 
+// Converts a FQDN to a path usable by CoreDNS
 function DomainToCoreDNS(domain) {
     const prefix = "/skydns/";
     const parts = domain.split(".");
@@ -11,14 +12,19 @@ function DomainToCoreDNS(domain) {
     return prefix + path;
 }
 
-async function GetAllRecords(domain) {
-    console.log(`GetAllRecords for ${domain}`);
+// Inverse of DomainToCoreDNS
+function CoreDNSToDomain(corednsDomain) {
+    corednsDomain = corednsDomain.substring(8);
+    const parts = domain.split("/");
+    if (parts.length < 2) return false;
+    const path = parts.reverse().join(".");
+    return path;
+}
 
+async function GetAllRecords(domain) {
     const prefix = DomainToCoreDNS(domain);
     if (!prefix) throw new Error("Invalid domain");
-    console.log(`Prefix is ${prefix}`);
     const kvs = await client.getAll().prefix(prefix).strings();
-    console.log(`KVs are ${JSON.stringify(kvs)}`);
     return kvs;
 }
 
@@ -33,6 +39,8 @@ async function RegisterNewDomain(domain) {
 }
 
 module.exports = {
+    CoreDNSToDomain,
+
     GetAllRecords,
     RegisterNewDomain
 }