Add TTL configs to Registry object (#1968)

* Add TTL configs to Registry object

* Change A and AAAA records TTL field name

core/src/main/java/google/registry/model/tld/Registry.java

@@ -275,6 +275,26 @@ public class Registry extends ImmutableObject implements Buildable, UnsafeSerial
     }
   }
 
+  /**
+   * The time to live for DNS A and AAAA records.
+   *
+   * <p>When this field is null, the "dnsDefaultATtl" value from the config file will be used.
+   */
+  Duration dnsAPlusAaaaTtl;
+
+  /**
+   * The time to live for DNS NS records.
+   *
+   * <p>When this field is null, the "dnsDefaultNsTtl" value from the config file will be used.
+   */
+  Duration dnsNsTtl;
+
+  /**
+   * The time to live for DNS DS records.
+   *
+   * <p>When this field is null, the "dnsDefaultDsTtl" value from the config file will be used.
+   */
+  Duration dnsDsTtl;
   /**
    * The unicode-aware representation of the TLD associated with this {@link Registry}.
    *
@@ -647,6 +667,21 @@ public class Registry extends ImmutableObject implements Buildable, UnsafeSerial
     return numDnsPublishLocks;
   }
 
+  /** Returns the time to live for A and AAAA records. */
+  public Duration getDnsAPlusAaaaTtl() {
+    return dnsAPlusAaaaTtl;
+  }
+
+  /** Returns the time to live for NS records. */
+  public Duration getDnsNsTtl() {
+    return dnsNsTtl;
+  }
+
+  /** Returns the time to live for DS records. */
+  public Duration getDnsDsTtl() {
+    return dnsDsTtl;
+  }
+
   public ImmutableSet<String> getAllowedRegistrantContactIds() {
     return nullToEmptyImmutableCopy(allowedRegistrantContactIds);
   }
@@ -737,6 +772,21 @@ public class Registry extends ImmutableObject implements Buildable, UnsafeSerial
       return this;
     }
 
+    public Builder setDnsAPlusAaaaTtl(Duration dnsAPlusAaaaTtl) {
+      getInstance().dnsAPlusAaaaTtl = dnsAPlusAaaaTtl;
+      return this;
+    }
+
+    public Builder setDnsNsAtl(Duration dnsNsAtl) {
+      getInstance().dnsNsTtl = dnsNsAtl;
+      return this;
+    }
+
+    public Builder setDnsDsAtl(Duration dnsDsAtl) {
+      getInstance().dnsDsTtl = dnsDsAtl;
+      return this;
+    }
+
     public Builder setAddGracePeriodLength(Duration addGracePeriodLength) {
       checkArgument(
           addGracePeriodLength.isLongerThan(Duration.ZERO),

db/src/main/resources/sql/schema/db-schema.sql.generated

@@ -716,6 +716,9 @@
         creation_time timestamptz not null,
         currency text not null,
         default_promo_tokens text[],
+        dns_a_plus_aaaa_ttl interval,
+        dns_ds_ttl interval,
+        dns_ns_ttl interval,
         dns_paused boolean not null,
         dns_writers text[] not null,
         drive_folder_id text,