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      1 /*
      2  * Copyright (C) 2011 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.volley;
     18 
     19 /**
     20  * Retry policy for a request.
     21  */
     22 public interface RetryPolicy {
     23 
     24     /**
     25      * Returns the current timeout (used for logging).
     26      */
     27     public int getCurrentTimeout();
     28 
     29     /**
     30      * Returns the current retry count (used for logging).
     31      */
     32     public int getCurrentRetryCount();
     33 
     34     /**
     35      * Prepares for the next retry by applying a backoff to the timeout.
     36      * @param error The error code of the last attempt.
     37      * @throws VolleyError In the event that the retry could not be performed (for example if we
     38      * ran out of attempts), the passed in error is thrown.
     39      */
     40     public void retry(VolleyError error) throws VolleyError;
     41 }
     42