Add domain_unlock nomulus command

This command is used by registry operators to apply registry locks to
domain names.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=176577240

java/google/registry/tools/UnlockDomainCommand.java

@@ -0,0 +1,78 @@
+// Copyright 2017 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.base.Preconditions.checkArgument;
+import static google.registry.model.EppResourceUtils.loadByForeignKey;
+import static google.registry.util.FormattingLogger.getLoggerForCallerClass;
+import static java.util.stream.Collectors.toList;
+import static org.joda.time.DateTimeZone.UTC;
+
+import com.beust.jcommander.Parameters;
+import com.google.common.collect.ImmutableList;
+import com.google.common.collect.ImmutableSet;
+import com.google.common.collect.Sets;
+import com.google.template.soy.data.SoyMapData;
+import google.registry.model.domain.DomainResource;
+import google.registry.model.eppcommon.StatusValue;
+import google.registry.tools.soy.DomainUpdateSoyInfo;
+import google.registry.util.FormattingLogger;
+import org.joda.time.DateTime;
+
+/**
+ * A command to registry unlock domain names via EPP.
+ *
+ * <p>A registry lock consists of server-side statuses preventing deletes, updates, and transfers.
+ */
+@Parameters(separators = " =", commandDescription = "Registry unlock a domain via EPP.")
+public class UnlockDomainCommand extends LockOrUnlockDomainCommand {
+
+  private static final FormattingLogger logger = getLoggerForCallerClass();
+
+  @Override
+  protected void initMutatingEppToolCommand() throws Exception {
+    // Project all domains as of the same time so that argument order doesn't affect behavior.
+    DateTime now = DateTime.now(UTC);
+    for (String domain : getDomains()) {
+      DomainResource domainResource = loadByForeignKey(DomainResource.class, domain, now);
+      checkArgument(domainResource != null, "Domain '%s' does not exist", domain);
+      ImmutableSet<StatusValue> statusesToRemove =
+          Sets.intersection(domainResource.getStatusValues(), REGISTRY_LOCK_STATUSES)
+              .immutableCopy();
+      if (statusesToRemove.isEmpty()) {
+        logger.infofmt("Domain '%s' is already unlocked and needs no updates.", domain);
+        continue;
+      }
+
+      setSoyTemplate(DomainUpdateSoyInfo.getInstance(), DomainUpdateSoyInfo.DOMAINUPDATE);
+      addSoyRecord(
+          clientId,
+          new SoyMapData(
+              "domain", domain,
+              "add", false,
+              "addNameservers", ImmutableList.of(),
+              "addAdmins", ImmutableList.of(),
+              "addTechs", ImmutableList.of(),
+              "addStatuses", ImmutableList.of(),
+              "remove", true,
+              "removeNameservers", ImmutableList.of(),
+              "removeAdmins", ImmutableList.of(),
+              "removeTechs", ImmutableList.of(),
+              "removeStatuses",
+                  statusesToRemove.stream().map(StatusValue::getXmlName).collect(toList()),
+              "change", false));
+    }
+  }
+}