content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements. See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership. The ASF licenses this file
   * to you 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 org.apache.flink.streaming.connectors.influxdb.sink;
  
  import com.influxdb.client.write.Point;
  import org.apache.flink.api.connector.sink.Committer;
  import org.apache.flink.api.connector.sink.GlobalCommitter;
  import org.apache.flink.api.connector.sink.Sink;
  import org.apache.flink.api.connector.sink.SinkWriter;
  import org.apache.flink.configuration.Configuration;
  import org.apache.flink.core.io.SimpleVersionedSerializer;
  import org.apache.flink.streaming.connectors.influxdb.sink.commiter.InfluxDBCommittableSerializer;
  import org.apache.flink.streaming.connectors.influxdb.sink.commiter.InfluxDBCommitter;
  import org.apache.flink.streaming.connectors.influxdb.sink.writer.InfluxDBPointSerializer;
  import org.apache.flink.streaming.connectors.influxdb.sink.writer.InfluxDBSchemaSerializer;
  import org.apache.flink.streaming.connectors.influxdb.sink.writer.InfluxDBWriter;
  
  import java.util.List;
  import java.util.Optional;
  
  /**
   * This Sink implementation of InfluxDB/Line Protocol. Please use a {@link InfluxDBSinkBuilder} to
   * construct a {@link InfluxDBSink}. The following example shows how to create an InfluxDBSink
   * having records of <code>Long</code> as input type.
   *
   * <pre>{@code
   * InfluxDBSink<Long> influxDBSink = InfluxDBSink.builder()
   * .setInfluxDBSchemaSerializer(new InfluxDBSerializer())
   * .setInfluxDBUrl(getUrl())
   * .setInfluxDBUsername(getUsername())
   * .setInfluxDBPassword(getPassword())
   * .setInfluxDBBucket(getBucket())
   * .setInfluxDBOrganization(getOrg())
   * .build();
   * }</pre>
   *
   * <p>See {@link InfluxDBSinkBuilder} for more details.
   *
   * @param <IN> type of the input of the sink.
   */
  public final class InfluxDBSink<IN> implements Sink<IN, Long, Point, Void> {
  
      private final InfluxDBSchemaSerializer<IN> influxDBSchemaSerializer;
      private final Configuration configuration;
  
      InfluxDBSink(
              final InfluxDBSchemaSerializer<IN> influxDBSchemaSerializer,
              final Configuration configuration) {
          this.influxDBSchemaSerializer = influxDBSchemaSerializer;
          this.configuration = configuration;
      }
  
      /**
       * Get a influxDBSinkBuilder to build a {@link InfluxDBSink}.
       *
       * @return a InfluxDB sink builder.
       */
      public static <IN> InfluxDBSinkBuilder<IN> builder() {
          return new InfluxDBSinkBuilder<>();
      }
  
      @Override
      public SinkWriter<IN, Long, Point> createWriter(
              final InitContext initContext, final List<Point> list) {
          final InfluxDBWriter<IN> writer =
                  new InfluxDBWriter<>(this.influxDBSchemaSerializer, this.configuration);
          writer.setProcessingTimerService(initContext.getProcessingTimeService());
          return writer;
      }
  
      @Override
      public Optional<Committer<Long>> createCommitter() {
          return Optional.of(new InfluxDBCommitter(this.configuration));
      }
  
      @Override
      public Optional<SimpleVersionedSerializer<Long>> getCommittableSerializer() {
          return Optional.of(new InfluxDBCommittableSerializer());
      }
  
      @Override
      public Optional<SimpleVersionedSerializer<Point>> getWriterStateSerializer() {
          return Optional.of(new InfluxDBPointSerializer());
      }
  
      @Override
      public Optional<GlobalCommitter<Long, Void>> createGlobalCommitter() {
          return Optional.empty();
      }
  
      @Override
      public Optional<SimpleVersionedSerializer<Void>> getGlobalCommittableSerializer() {
          return Optional.empty();
      }
  
      public Configuration getConfiguration() {
          return this.configuration;
      }
  }
  