Add a CompareReservedListCommand (#1054)

* Add a CompareReservedListCommand

* compare maps

* output format fixes

* Clean up loops

* Inline Sets.difference()

* Remove ImmutableCopy()

core/src/main/java/google/registry/tools/CompareReservedListsCommand.java

@@ -0,0 +1,82 @@
+// Copyright 2021 The Nomulus 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 google.registry.tools;
+
+import static com.google.common.collect.ImmutableSet.toImmutableSet;
+import static google.registry.model.common.EntityGroupRoot.getCrossTldKey;
+import static google.registry.model.ofy.ObjectifyService.ofy;
+import static google.registry.persistence.transaction.TransactionManagerFactory.jpaTm;
+
+import com.beust.jcommander.Parameters;
+import com.google.common.collect.ImmutableMap;
+import com.google.common.collect.ImmutableSet;
+import com.google.common.collect.Sets;
+import google.registry.model.registry.label.ReservedList;
+import google.registry.model.registry.label.ReservedList.ReservedListEntry;
+import google.registry.model.registry.label.ReservedListDatastoreDao;
+import google.registry.model.registry.label.ReservedListSqlDao;
+
+/** Command to compare all ReservedLists in Datastore to all ReservedLists in Cloud SQL. */
+@Parameters(
+    separators = " =",
+    commandDescription = "Compare all the ReservedLists in Datastore to those in Cloud SQL.")
+final class CompareReservedListsCommand implements CommandWithRemoteApi {
+
+  @Override
+  public void run() {
+    ImmutableSet<String> datastoreLists =
+        ofy().load().type(ReservedList.class).ancestor(getCrossTldKey()).list().stream()
+            .map(ReservedList::getName)
+            .collect(toImmutableSet());
+
+    ImmutableSet<String> cloudSqlLists =
+        jpaTm()
+            .transact(
+                () ->
+                    jpaTm().loadAllOf(ReservedList.class).stream()
+                        .map(ReservedList::getName)
+                        .collect(toImmutableSet()));
+
+    int listsWithDiffs = 0;
+
+    for (String listName : Sets.difference(datastoreLists, cloudSqlLists)) {
+      listsWithDiffs++;
+      System.out.printf(
+          "ReservedList '%s' is present in Datastore, but not in Cloud SQL.%n", listName);
+    }
+    for (String listName : Sets.difference(cloudSqlLists, datastoreLists)) {
+      listsWithDiffs++;
+      System.out.printf(
+          "ReservedList '%s' is present in Cloud SQL, but not in Datastore.%n", listName);
+    }
+
+    for (String listName : Sets.intersection(datastoreLists, cloudSqlLists)) {
+      ImmutableMap<String, ReservedListEntry> namesInSql =
+          ReservedListSqlDao.getLatestRevision(listName).get().getReservedListEntries();
+
+      ImmutableMap<String, ReservedListEntry> namesInDatastore =
+          ReservedListDatastoreDao.getLatestRevision(listName).get().getReservedListEntries();
+
+      // This will only print out the name of the unequal list. GetReservedListCommand should be
+      // used to determine what the actual differences are.
+      if (!namesInDatastore.equals(namesInSql)) {
+        listsWithDiffs++;
+        System.out.printf("ReservedList '%s' has different entries in each database.%n", listName);
+      }
+    }
+
+    System.out.printf("Found %d unequal list(s).%n", listsWithDiffs);
+  }
+}

core/src/main/java/google/registry/tools/RegistryTool.java

@@ -37,6 +37,7 @@ public final class RegistryTool {
           .put("canonicalize_labels", CanonicalizeLabelsCommand.class)
           .put("check_domain", CheckDomainCommand.class)
           .put("check_domain_claims", CheckDomainClaimsCommand.class)
+          .put("compare_reserved_lists", CompareReservedListsCommand.class)
           .put("convert_idn", ConvertIdnCommand.class)
           .put("count_domains", CountDomainsCommand.class)
           .put("create_anchor_tenant", CreateAnchorTenantCommand.class)