mv com/google/domain/registry google/registry

This change renames directories in preparation for the great package
rename. The repository is now in a broken state because the code
itself hasn't been updated. However this should ensure that git
correctly preserves history for each file.

java/google/registry/whois/NameserverLookupByIpCommand.java

@@ -0,0 +1,67 @@
+// Copyright 2016 The Domain Registry Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package com.google.domain.registry.whois;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+import static com.google.domain.registry.model.EppResourceUtils.queryNotDeleted;
+import static javax.servlet.http.HttpServletResponse.SC_NOT_FOUND;
+
+import com.google.common.annotations.VisibleForTesting;
+import com.google.common.base.Predicate;
+import com.google.common.collect.FluentIterable;
+import com.google.common.collect.ImmutableList;
+import com.google.common.net.InternetDomainName;
+import com.google.domain.registry.model.host.HostResource;
+import com.google.domain.registry.model.registry.Registries;
+
+import org.joda.time.DateTime;
+
+import java.net.InetAddress;
+
+/**
+ * Represents a WHOIS lookup for a nameserver based on its IP.
+ *
+ * <p>Both IPv4 and IPv6 addresses are supported. Unlike other WHOIS commands, this is an eventually
+ * consistent query.
+ *
+ * <p><b>Note:</b> There may be multiple nameservers with the same IP.
+ */
+final class NameserverLookupByIpCommand implements WhoisCommand {
+
+  @VisibleForTesting
+  final InetAddress ipAddress;
+
+  NameserverLookupByIpCommand(InetAddress ipAddress) {
+    this.ipAddress = checkNotNull(ipAddress, "ipAddress");
+  }
+
+  @Override
+  public WhoisResponse executeQuery(DateTime now) throws WhoisException {
+    ImmutableList<HostResource> hosts = FluentIterable
+        .from(queryNotDeleted(HostResource.class, now, "inetAddresses", ipAddress))
+        .filter(new Predicate<HostResource>() {
+          @Override
+          public boolean apply(final HostResource host) {
+            return Registries
+                .findTldForName(InternetDomainName.from(host.getFullyQualifiedHostName()))
+                .isPresent();
+          }})
+        .toList();
+    if (hosts.isEmpty()) {
+      throw new WhoisException(now, SC_NOT_FOUND, "No nameservers found.");
+    }
+    return new NameserverWhoisResponse(hosts, now);
+  }
+}