content: package pl.allegro.tech.hermes.api;
  
  import static com.google.common.base.Preconditions.checkNotNull;
  import static java.util.Collections.emptySet;
  
  import com.fasterxml.jackson.annotation.JsonCreator;
  import com.fasterxml.jackson.annotation.JsonProperty;
  import com.google.common.collect.ImmutableSet;
  import java.util.Objects;
  import java.util.Set;
  
  public final class SubscriptionHealth {
    public static final SubscriptionHealth HEALTHY =
        new SubscriptionHealth(Status.HEALTHY, emptySet());
    public static final SubscriptionHealth NO_DATA =
        new SubscriptionHealth(Status.NO_DATA, emptySet());
  
    private final Status status;
    private final ImmutableSet<SubscriptionHealthProblem> problems;
  
    @JsonCreator
    private SubscriptionHealth(
        @JsonProperty("status") Status status,
        @JsonProperty("problems") Set<SubscriptionHealthProblem> problems) {
      this.status = status;
      this.problems = ImmutableSet.copyOf(problems);
    }
  
    public Status getStatus() {
      return status;
    }
  
    public Set<SubscriptionHealthProblem> getProblems() {
      return problems;
    }
  
    @Override
    public boolean equals(Object o) {
      if (this == o) {
        return true;
      }
      if (!(o instanceof SubscriptionHealth)) {
        return false;
      }
      SubscriptionHealth that = (SubscriptionHealth) o;
      return status == that.status && Objects.equals(problems, that.problems);
    }
  
    @Override
    public int hashCode() {
      return Objects.hash(status, problems);
    }
  
    @Override
    public String toString() {
      return "SubscriptionHealth{" + "status=" + status + ", problems=" + problems + '}';
    }
  
    public static SubscriptionHealth of(Set<SubscriptionHealthProblem> problems) {
      checkNotNull(problems, "Set of health problems cannot be null");
      if (problems.isEmpty()) {
        return HEALTHY;
      } else {
        return new SubscriptionHealth(Status.UNHEALTHY, problems);
      }
    }
  
    public enum Status {
      HEALTHY,
      UNHEALTHY,
      NO_DATA
    }
  }
  