content: package pl.allegro.tech.hermes.api;
  
  import com.fasterxml.jackson.annotation.JsonCreator;
  import com.fasterxml.jackson.annotation.JsonValue;
  import java.util.Objects;
  
  public class MetricLongValue {
    private static final String UNAVAILABLE_STRING = "unavailable";
    private static final MetricLongValue UNAVAILABLE = new MetricLongValue(false, -1);
  
    private final boolean available;
    private final long value;
  
    private MetricLongValue(boolean available, long value) {
      this.available = available;
      this.value = value;
    }
  
    public static MetricLongValue unavailable() {
      return UNAVAILABLE;
    }
  
    public static MetricLongValue of(long value) {
      return new MetricLongValue(true, value);
    }
  
    @JsonCreator
    public static MetricLongValue deserialize(String value) {
      if (UNAVAILABLE_STRING.equals(value)) {
        return unavailable();
      }
      return of(Long.valueOf(value));
    }
  
    @JsonValue
    public String asString() {
      return available ? String.valueOf(value) : UNAVAILABLE_STRING;
    }
  
    public long toLong() {
      return value;
    }
  
    public boolean isAvailable() {
      return available;
    }
  
    @Override
    public boolean equals(Object o) {
      if (this == o) {
        return true;
      }
      if (o == null || getClass() != o.getClass()) {
        return false;
      }
      MetricLongValue that = (MetricLongValue) o;
      return available == that.available && value == that.value;
    }
  
    @Override
    public int hashCode() {
      return Objects.hash(available, value);
    }
  }
  