001    /**
002     * Copyright (C) 2009-2011 the original author or authors.
003     * See the notice.md file distributed with this work for additional
004     * information regarding copyright ownership.
005     *
006     * Licensed under the Apache License, Version 2.0 (the "License");
007     * you may not use this file except in compliance with the License.
008     * You may obtain a copy of the License at
009     *
010     *     http://www.apache.org/licenses/LICENSE-2.0
011     *
012     * Unless required by applicable law or agreed to in writing, software
013     * distributed under the License is distributed on an "AS IS" BASIS,
014     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015     * See the License for the specific language governing permissions and
016     * limitations under the License.
017     */
018    
019    package org.fusesource.restygwt.client.callback;
020    
021    import org.fusesource.restygwt.client.Method;
022    
023    public class RetryingCallbackFactory implements CallbackFactory {
024    
025        private final CallbackFilter[] callbackFilters;
026    
027        private final int gracePeriodMillis;
028        private final int numberOfRetries;
029    
030        public RetryingCallbackFactory(int gracePeriodMillis, int numberOfRetries, CallbackFilter... callbackFilters) {
031            this.callbackFilters = callbackFilters;
032            this.gracePeriodMillis = gracePeriodMillis;
033            this.numberOfRetries = numberOfRetries;
034        }
035    
036        public RetryingCallbackFactory(CallbackFilter... callbackFilters) {
037            this.callbackFilters = callbackFilters;
038            this.gracePeriodMillis = 1000;
039            this.numberOfRetries = 5;
040        }
041    
042        /**
043         * helper method to create the callback with all configurations wanted
044         *
045         * @param method
046         * @return
047         */
048        public FilterawareRequestCallback createCallback(Method method) {
049            final FilterawareRequestCallback retryingCallback = new RetryingFilterawareRequestCallback(
050                    method, gracePeriodMillis, numberOfRetries);
051    
052            for(CallbackFilter filter: callbackFilters){
053                retryingCallback.addFilter(filter);
054            }
055            return retryingCallback;
056        }
057    }