/*
 * Copyright The OpenTelemetry Authors
 *
 * Licensed 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
 *
 *      https://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.
 */

/**
 * @since 1.0.0
 */
export enum SpanKind {
  /** Default value. Indicates that the span is used internally. */
  INTERNAL = 0,

  /**
   * Indicates that the span covers server-side handling of an RPC or other
   * remote request.
   */
  SERVER = 1,

  /**
   * Indicates that the span covers the client-side wrapper around an RPC or
   * other remote request.
   */
  CLIENT = 2,

  /**
   * Indicates that the span describes producer sending a message to a
   * broker. Unlike client and server, there is no direct critical path latency
   * relationship between producer and consumer spans.
   */
  PRODUCER = 3,

  /**
   * Indicates that the span describes consumer receiving a message from a
   * broker. Unlike client and server, there is no direct critical path latency
   * relationship between producer and consumer spans.
   */
  CONSUMER = 4,
}
