Method fromThrowable

api/src/main/java/io/grpc/Status.java:396–408

Extract an error Status from the causal chain of a Throwable. If no status can be found, a status is created with Code#UNKNOWN as its code and t as its cause. @return non-null status

(Throwable t)

   * @return non-{@code null} status
   */
  public static Status fromThrowable(Throwable t) {
    Throwable cause = checkNotNull(t, "t");
    while (cause != null) {
      if (cause instanceof StatusException) {
        return ((StatusException) cause).getStatus();
      } else if (cause instanceof StatusRuntimeException) {
        return ((StatusRuntimeException) cause).getStatus();
      }
      cause = cause.getCause();
    }
    // Couldn't find a cause with a Status
    return UNKNOWN.withCause(t);
  }

  /**
   * Extract an error trailers from the causal chain of a {@link Throwable}.