Java 기능은 어떻게 IoT 및 클라우드 컴퓨팅을 위한 짧은 지연 통신을 제공합니까?

import com.google.cloud.functions.Context;
import com.google.cloud.functions.RawBackgroundFunction;
import com.google.cloud.spanner.DatabaseClient;
import com.google.cloud.spanner.DatabaseId;
import com.google.cloud.spanner.Spanner;
import com.google.cloud.spanner.SpannerOptions;
import com.google.cloud.spanner.Statement;
import functions.eventpojos.SensorData;
import java.util.logging.Logger;

public class SensorDataProcessor implements RawBackgroundFunction {
  private static final Logger logger = Logger.getLogger(SensorDataProcessor.class.getName());

  private static final String PROJECT_ID = System.getenv("GCP_PROJECT");
  private static final String INSTANCE_ID = System.getenv("SPANNER_INSTANCE");
  private static final String DATABASE_ID = System.getenv("SPANNER_DATABASE");

  private static final Spanner spanner =
      SpannerOptions.newBuilder().setProjectId(PROJECT_ID).build().getService();

  @Override
  public void accept(String json, Context context) {
    SensorData sensorData = SensorData.fromJson(json);

    DatabaseClient client =
        spanner.getDatabaseClient(DatabaseId.of(PROJECT_ID, INSTANCE_ID, DATABASE_ID));

    Statement statement =
        Statement.of(
            "INSERT INTO SensorData (sensorId, timestamp, temperature, humidity) VALUES"
                + " (@sensorId, @timestamp, @temperature, @humidity)");
    client.executeUpdate(statement, sensorData.toSpannerParams());

    logger.info("Sensor data processed successfully.");
  }
}