package com.atlassian.asap.api.exception;
   
   import com.atlassian.asap.core.validator.ValidatedKeyId;
   
   import javax.annotation.Nonnull;
   import javax.annotation.Nullable;
   import java.net.URI;
   import java.util.Optional;
   
  /**
   * Thrown when a cryptographic key is not available.
   */
  public class CannotRetrieveKeyException extends Exception {
      /**
       * The validated key ID used to try to retrieve the key. May be {@code null}
       */
      @Nullable
      private final transient ValidatedKeyId keyId;
  
      @Nullable
      private final URI keyUri;
  
      public CannotRetrieveKeyException(String reason) {
          this(reason, (URI) null);
      }
  
      public CannotRetrieveKeyException(String reason, URI keyUri) {
          this(reason, (ValidatedKeyId) null, keyUri);
      }
  
      public CannotRetrieveKeyException(String reason, ValidatedKeyId keyId, URI keyUri) {
          super(reason);
          this.keyId = keyId;
          this.keyUri = keyUri;
      }
  
      public CannotRetrieveKeyException(String message, Throwable cause) {
          this(message, cause, null);
      }
  
      public CannotRetrieveKeyException(String message, Throwable cause, URI keyUri) {
          this(message, cause, null, keyUri);
      }
  
      protected CannotRetrieveKeyException(String message, Throwable cause, ValidatedKeyId keyId, URI keyUri) {
          super(message, cause);
          this.keyId = keyId;
          this.keyUri = keyUri;
      }
  
      @Nonnull
      public final Optional<ValidatedKeyId> getKeyId() {
          return Optional.ofNullable(keyId);
      }
  
      @Nonnull
      public final Optional<URI> getKeyUri() {
          return Optional.ofNullable(keyUri);
      }
  }