Import code from internal repository to git

java/com/google/domain/registry/model/export/LogsExportCursor.java

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+// 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.model.export;
+
+import static com.google.domain.registry.util.CollectionUtils.nullToEmptyImmutableCopy;
+
+import com.google.common.collect.ImmutableList;
+import com.google.common.collect.ImmutableSet;
+import com.google.domain.registry.model.Buildable;
+import com.google.domain.registry.model.common.CrossTldSingleton;
+import com.google.domain.registry.model.common.PersistedRangeLong;
+
+import com.googlecode.objectify.annotation.Entity;
+
+import java.util.List;
+import java.util.Set;
+
+/** A saved cursor of exported log records so far. */
+@Entity
+public class LogsExportCursor extends CrossTldSingleton implements Buildable {
+
+  /**
+   * A set of timestamp ranges (expressesd in microseconds since the epoch) that have been exported
+   * to GCS.
+   */
+  Set<PersistedRangeLong> exportedRanges;
+
+  /**
+   * A list of filenames that are pending import into bigquery. Files may not have been imported
+   * into bigquery on previous iterations if there are gaps in the exported ranges.
+   */
+  List<String> filesPendingImport;
+
+  public ImmutableSet<PersistedRangeLong> getExportedRanges() {
+    return nullToEmptyImmutableCopy(exportedRanges);
+  }
+
+  public ImmutableList<String> getFilesPendingImport() {
+    return nullToEmptyImmutableCopy(filesPendingImport);
+  }
+
+  @Override
+  public Builder asBuilder() {
+    return new Builder(clone(this));
+  }
+
+  /** A builder for constructing {@link LogsExportCursor} objects, since they are immutable. */
+  public static class Builder extends Buildable.Builder<LogsExportCursor> {
+    public Builder() {}
+
+    private Builder(LogsExportCursor instance) {
+      super(instance);
+    }
+
+    public Builder setExportedRanges(ImmutableSet<PersistedRangeLong> exportedRanges) {
+      getInstance().exportedRanges = exportedRanges;
+      return this;
+    }
+
+    public Builder setFilesPendingImport(ImmutableList<String> filesPendingImport) {
+      getInstance().filesPendingImport = filesPendingImport;
+      return this;
+    }
+
+    @Override
+    public LogsExportCursor build() {
+      return super.build();
+    }
+  }
+}