Method failed

core/src/main/java/io/grpc/internal/Http2Ping.java:148–162

Completes this operation exceptionally. Registered callbacks are invoked and provided the given throwable as the cause of failure. @param failureCause the cause of failure

(Status failureCause)

   * @param failureCause the cause of failure
   */
  public void failed(Status failureCause) {
    Map<ClientTransport.PingCallback, Executor> callbacks;
    synchronized (this) {
      if (completed) {
        return;
      }
      completed = true;
      this.failureCause = failureCause;
      callbacks = this.callbacks;
      this.callbacks = null;
    }
    for (Map.Entry<ClientTransport.PingCallback, Executor> entry : callbacks.entrySet()) {
      notifyFailed(entry.getKey(), entry.getValue(), failureCause);
    }
  }

  /**
   * Notifies the given callback that the ping operation failed.