zipkin2.storage.cassandra.v1.AccumulateTraceIdTsLong Maven / Gradle / Ivy

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/*
 * Copyright 2015-2020 The OpenZipkin Authors
 *
 * 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 zipkin2.storage.cassandra.v1;

import com.datastax.oss.driver.api.core.cql.Row;
import java.util.LinkedHashSet;
import java.util.Set;
import java.util.function.BiConsumer;
import java.util.function.Supplier;
import zipkin2.storage.cassandra.internal.call.AccumulateAllResults;

final class AccumulateTraceIdTsLong extends AccumulateAllResults> {
  static final AccumulateAllResults> INSTANCE = new AccumulateTraceIdTsLong();

  static AccumulateAllResults> get() {
    return INSTANCE;
  }

  @Override protected Supplier> supplier() {
    return LinkedHashSet::new; // because results are not distinct
  }

  @Override protected BiConsumer> accumulator() {
    return (row, result) ->
      result.add(new Pair(row.getLong(0), TimestampCodec.deserialize(row, 1)));
  }

  @Override public String toString() {
    return "AccumulateTraceIdTsLong{}";
  }

  private AccumulateTraceIdTsLong() {
  }
}