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81 lines
2.9 KiB
Java
81 lines
2.9 KiB
Java
/*
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* ====================================================================
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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* ====================================================================
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*
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* This software consists of voluntary contributions made by many
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* individuals on behalf of the Apache Software Foundation. For more
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* information on the Apache Software Foundation, please see
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* <http://www.apache.org/>.
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*
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*/
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package ch.boye.httpclientandroidlib.impl.client;
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import ch.boye.httpclientandroidlib.HttpResponse;
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import ch.boye.httpclientandroidlib.HttpStatus;
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import ch.boye.httpclientandroidlib.annotation.Immutable;
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import ch.boye.httpclientandroidlib.client.ServiceUnavailableRetryStrategy;
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import ch.boye.httpclientandroidlib.protocol.HttpContext;
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import ch.boye.httpclientandroidlib.util.Args;
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/**
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* Default implementation of the {@link ServiceUnavailableRetryStrategy} interface.
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* that retries <code>503</code> (Service Unavailable) responses for a fixed number of times
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* at a fixed interval.
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*
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* @since 4.2
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*/
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@Immutable
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public class DefaultServiceUnavailableRetryStrategy implements ServiceUnavailableRetryStrategy {
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/**
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* Maximum number of allowed retries if the server responds with a HTTP code
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* in our retry code list. Default value is 1.
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*/
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private final int maxRetries;
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/**
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* Retry interval between subsequent requests, in milliseconds. Default
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* value is 1 second.
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*/
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private final long retryInterval;
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public DefaultServiceUnavailableRetryStrategy(final int maxRetries, final int retryInterval) {
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super();
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Args.positive(maxRetries, "Max retries");
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Args.positive(retryInterval, "Retry interval");
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this.maxRetries = maxRetries;
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this.retryInterval = retryInterval;
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}
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public DefaultServiceUnavailableRetryStrategy() {
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this(1, 1000);
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}
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public boolean retryRequest(final HttpResponse response, final int executionCount, final HttpContext context) {
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return executionCount <= maxRetries &&
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response.getStatusLine().getStatusCode() == HttpStatus.SC_SERVICE_UNAVAILABLE;
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}
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public long getRetryInterval() {
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return retryInterval;
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}
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}
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