Add [] to export domain lists to GCS

The ExportDomainListsAction [] has a cron entry that runs it twice per day.  It exports one flat text file per real (non-test) TLD to the "{project-id}-domain-lists" bucket in Google Cloud Storage, overwriting the existing ones in place.  Each file is a newline-delimited list of active (non-deleted) domains in that TLD.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=116767987

java/com/google/domain/registry/config/ConfigModule.java

@@ -82,6 +82,12 @@ public final class ConfigModule {
     return config.getCommitLogDatastoreRetention();
   }
 
+  @Provides
+  @Config("domainListsGcsBucket")
+  public static String provideDomainListsGcsBucket(RegistryConfig config) {
+    return config.getDomainListsBucket();
+  }
+
   /**
    * Maximum number of commit logs to delete per transaction.
    *

java/com/google/domain/registry/config/RegistryConfig.java

@@ -44,6 +44,13 @@ public interface RegistryConfig {
    */
   public String getSnapshotsBucket();
 
+  /**
+   * Returns the Google Cloud Storage bucket for storing exported domain lists.
+   *
+   * @see com.google.domain.registry.export.ExportDomainListsAction
+   */
+  public String getDomainListsBucket();
+
   /**
    * Returns the BigQuery dataset for storing directly imported datastore snapshots.
    *

java/com/google/domain/registry/config/TestRegistryConfig.java

@@ -52,6 +52,11 @@ public class TestRegistryConfig implements RegistryConfig {
     return getProjectId() + "-snapshots";
   }
 
+  @Override
+  public String getDomainListsBucket() {
+    return getProjectId() + "-domain-lists";
+  }
+
   @Override
   public String getSnapshotsDataset() {
     return "snapshots";

java/com/google/domain/registry/env/common/backend/WEB-INF/web.xml

@@ -364,6 +364,15 @@
     <url-pattern>/_dr/task/syncGroupMembers</url-pattern>
   </servlet-mapping>
 
+  <servlet>
+    <servlet-name>export-domain-lists</servlet-name>
+    <servlet-class>com.google.domain.registry.module.backend.BackendServlet</servlet-class>
+  </servlet>
+  <servlet-mapping>
+    <servlet-name>export-domain-lists</servlet-name>
+    <url-pattern>/_dr/task/exportDomainLists</url-pattern>
+  </servlet-mapping>
+
   <!--  Mapreduce to delete the specified contact resource if it is not referenced by any domains. -->
   <servlet>
     <description>

java/com/google/domain/registry/env/production/default/WEB-INF/cron.xml

@@ -124,6 +124,15 @@
     <target>backend</target>
   </cron>
 
+  <cron>
+    <url><![CDATA[/_dr/task/exportDomainLists]]></url>
+    <description>
+      This job exports lists of all active domain names to Google Cloud Storage.
+    </description>
+    <schedule>every 12 hours synchronized</schedule>
+    <target>backend</target>
+  </cron>
+
   <cron>
     <url><![CDATA[/_dr/cron/fanout?queue=export-snapshot&endpoint=/_dr/task/exportSnapshot&runInEmpty]]></url>
     <description>

java/com/google/domain/registry/export/BUILD

@@ -23,16 +23,16 @@ java_library(
         "//java/com/google/common/net",
         "//java/com/google/domain/registry/bigquery",
         "//java/com/google/domain/registry/config",
-        "//java/com/google/domain/registry/flows",
         "//java/com/google/domain/registry/gcs",
         "//java/com/google/domain/registry/groups",
+        "//java/com/google/domain/registry/mapreduce",
         "//java/com/google/domain/registry/model",
         "//java/com/google/domain/registry/request",
-        "//java/com/google/domain/registry/security:servlets",
         "//java/com/google/domain/registry/storage/drive",
         "//java/com/google/domain/registry/util",
         "//third_party/java/appengine:appengine-api",
         "//third_party/java/appengine_gcs_client",
+        "//third_party/java/appengine_mapreduce2:appengine_mapreduce",
         "//third_party/java/dagger",
         "//third_party/java/joda_time",
         "//third_party/java/json_simple",

java/com/google/domain/registry/export/ExportDomainListsAction.java

@@ -0,0 +1,135 @@
+// Copyright 2016 Google Inc. 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.export;
+
+import static com.google.appengine.tools.cloudstorage.GcsServiceFactory.createGcsService;
+import static com.google.domain.registry.mapreduce.EppResourceInputs.createEntityInput;
+import static com.google.domain.registry.model.EppResourceUtils.isActive;
+import static com.google.domain.registry.model.registry.Registries.getTldsOfType;
+import static com.google.domain.registry.util.PipelineUtils.createJobPath;
+import static java.nio.charset.StandardCharsets.UTF_8;
+import static org.joda.time.DateTimeZone.UTC;
+
+import com.google.appengine.tools.cloudstorage.GcsFilename;
+import com.google.appengine.tools.cloudstorage.RetryParams;
+import com.google.appengine.tools.mapreduce.Mapper;
+import com.google.appengine.tools.mapreduce.Reducer;
+import com.google.appengine.tools.mapreduce.ReducerInput;
+import com.google.common.collect.ImmutableList;
+import com.google.common.collect.ImmutableSet;
+import com.google.domain.registry.config.ConfigModule.Config;
+import com.google.domain.registry.gcs.GcsUtils;
+import com.google.domain.registry.mapreduce.MapreduceAction;
+import com.google.domain.registry.mapreduce.MapreduceRunner;
+import com.google.domain.registry.model.domain.DomainResource;
+import com.google.domain.registry.model.registry.Registry.TldType;
+import com.google.domain.registry.request.Action;
+import com.google.domain.registry.request.Response;
+import com.google.domain.registry.util.FormattingLogger;
+
+import org.joda.time.DateTime;
+
+import java.io.IOException;
+import java.io.OutputStream;
+import java.io.OutputStreamWriter;
+import java.io.PrintWriter;
+import java.io.Writer;
+
+import javax.inject.Inject;
+
+/**
+ * A mapreduce that exports the list of active domains on all real TLDs to Google Cloud Storage.
+ *
+ * Each TLD's active domain names are exported as a newline-delimited flat text file with the name
+ * TLD.txt into the domain-lists bucket.  Note that this overwrites the files in place.
+ */
+@Action(path = "/_dr/task/exportDomainLists")
+public class ExportDomainListsAction implements MapreduceAction {
+
+  private static final FormattingLogger logger = FormattingLogger.getLoggerForCallerClass();
+
+  @Inject MapreduceRunner mrRunner;
+  @Inject Response response;
+  @Inject @Config("domainListsGcsBucket") String gcsBucket;
+  @Inject @Config("gcsBufferSize") int gcsBufferSize;
+  @Inject ExportDomainListsAction() {}
+
+  @Override
+  public void run() {
+    ImmutableSet<String> realTlds = getTldsOfType(TldType.REAL);
+    logger.infofmt("Exporting domain lists for tlds %s", realTlds);
+    response.sendJavaScriptRedirect(createJobPath(mrRunner
+        .setJobName("Export domain lists")
+        .setModuleName("backend")
+        .runMapreduce(
+            new ExportDomainListsMapper(DateTime.now(UTC), realTlds),
+            new ExportDomainListsReducer(gcsBucket, gcsBufferSize),
+            ImmutableList.of(createEntityInput(DomainResource.class)))));
+  }
+
+  static class ExportDomainListsMapper extends Mapper<DomainResource, String, String> {
+
+    private static final long serialVersionUID = -7312206212434039854L;
+
+    private final DateTime exportTime;
+    private final ImmutableSet<String> realTlds;
+
+    ExportDomainListsMapper(DateTime exportTime, ImmutableSet<String> realTlds) {
+      this.exportTime = exportTime;
+      this.realTlds = realTlds;
+    }
+
+    @Override
+    public void map(DomainResource domain) {
+      if (realTlds.contains(domain.getTld()) && isActive(domain, exportTime)) {
+        emit(domain.getTld(), domain.getFullyQualifiedDomainName());
+        getContext().incrementCounter(String.format("domains in tld %s", domain.getTld()));
+      }
+    }
+  }
+
+  static class ExportDomainListsReducer extends Reducer<String, String, Void> {
+
+    private static final long serialVersionUID = 7035260977259119087L;
+
+    private final String gcsBucket;
+    private final int gcsBufferSize;
+
+    public ExportDomainListsReducer(String gcsBucket, int gcsBufferSize) {
+      this.gcsBucket = gcsBucket;
+      this.gcsBufferSize = gcsBufferSize;
+    }
+
+    @Override
+    public void reduce(String tld, ReducerInput<String> fqdns) {
+      GcsFilename filename = new GcsFilename(gcsBucket, tld + ".txt");
+      GcsUtils cloudStorage =
+          new GcsUtils(createGcsService(RetryParams.getDefaultInstance()), gcsBufferSize);
+      try (OutputStream gcsOutput = cloudStorage.openOutputStream(filename);
+          Writer osWriter = new OutputStreamWriter(gcsOutput, UTF_8);
+          PrintWriter writer = new PrintWriter(osWriter)) {
+        long count;
+        for (count = 0; fqdns.hasNext(); count++) {
+          writer.println(fqdns.next());
+        }
+        writer.flush();
+        getContext().incrementCounter("tld domain lists written out");
+        logger.infofmt("Wrote out %d domains for tld %s.", count, tld);
+      } catch (IOException e) {
+        throw new RuntimeException(e);
+      }
+    }
+  }
+}

java/com/google/domain/registry/model/domain/DomainBase.java

@@ -52,7 +52,7 @@ import javax.xml.bind.annotation.XmlTransient;
 public abstract class DomainBase extends EppResource {
 
   /**
-   * Fully qualified domain name, which serves as the foreign key for this domain.
+   * Fully qualified domain name (puny-coded), which serves as the foreign key for this domain.
    * <p>
    * This is only unique in the sense that for any given lifetime specified as the time range from
    * (creationTime, deletionTime) there can only be one domain in the datastore with this name.

java/com/google/domain/registry/module/backend/BackendRequestComponent.java

@@ -28,6 +28,7 @@ import com.google.domain.registry.dns.ReadDnsQueueAction;
 import com.google.domain.registry.dns.RefreshDns;
 import com.google.domain.registry.dns.WriteDnsTask;
 import com.google.domain.registry.export.BigqueryPollJobAction;
+import com.google.domain.registry.export.ExportDomainListsAction;
 import com.google.domain.registry.export.ExportRequestModule;
 import com.google.domain.registry.export.ExportReservedTermsTask;
 import com.google.domain.registry.export.SyncGroupMembersTask;
@@ -81,6 +82,7 @@ interface BackendRequestComponent {
   DeleteOldCommitLogsAction deleteOldCommitLogsAction();
   DnsRefreshForHostRenameAction dnsRefreshForHostRenameAction();
   ExportCommitLogDiffAction exportCommitLogDiffAction();
+  ExportDomainListsAction exportDomainListsAction();
   ExportReservedTermsTask exportReservedTermsTask();
   NordnUploadAction nordnUploadAction();
   NordnVerifyAction nordnVerifyAction();