Utility class for checking if a Throwableis a HttpException of a specific codes.

HttpExceptions.java

package com.nm.support.okhttp;

import retrofit2.HttpException;

import static java.net.HttpURLConnection.HTTP_INTERNAL_ERROR;
import static java.net.HttpURLConnection.HTTP_NOT_FOUND;
import static java.net.HttpURLConnection.HTTP_UNAUTHORIZED;

public final class HttpExceptions {
  private HttpExceptions() {
    // no instances
  }

  public static boolean isCode(Throwable throwable, int code) {
    return throwable instanceof HttpException && ((HttpException) throwable).code() == code;
  }

  public static boolean isNotFound(Throwable throwable) {
    return isCode(throwable, HTTP_NOT_FOUND);
  }

  public static boolean isUnauthorized(Throwable throwable) {
    return isCode(throwable, HTTP_UNAUTHORIZED);
  }

  public static boolean isInternalError(Throwable throwable) {
    if (throwable instanceof HttpException) {
      final int code = ((HttpException) throwable).code();
      if (code >= HTTP_INTERNAL_ERROR) return true;
    }
    return false;
  }
}