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| <h2 title="Interface BackOffStrategy" class="title">Interface BackOffStrategy</h2> |
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| <dt>All Known Implementing Classes:</dt> |
| <dd><a href="../../../../../../../org/apache/streams/util/api/requests/backoff/AbstractBackOffStrategy.html" title="class in org.apache.streams.util.api.requests.backoff">AbstractBackOffStrategy</a>, <a href="../../../../../../../org/apache/streams/util/api/requests/backoff/impl/ConstantTimeBackOffStrategy.html" title="class in org.apache.streams.util.api.requests.backoff.impl">ConstantTimeBackOffStrategy</a>, <a href="../../../../../../../org/apache/streams/util/api/requests/backoff/impl/ExponentialBackOffStrategy.html" title="class in org.apache.streams.util.api.requests.backoff.impl">ExponentialBackOffStrategy</a>, <a href="../../../../../../../org/apache/streams/util/api/requests/backoff/impl/LinearTimeBackOffStrategy.html" title="class in org.apache.streams.util.api.requests.backoff.impl">LinearTimeBackOffStrategy</a></dd> |
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| <pre>public interface <span class="typeNameLabel">BackOffStrategy</span></pre> |
| <div class="block">BackOffStrategy will cause the current thread to sleep for a specific amount of time. This is used to adhere to |
| api rate limits. |
| |
| <p/> |
| The example below illustrates using a BackOffStrategy to slow down requests when you hit a rate limit exception. |
| |
| <code> |
| public void pollApi(ApiClient apiClient, BackOffStrategy backOffStrategy) throws BackOffException { |
| while( apiClient.hasMoreData() ) { |
| try { |
| apiClient.pollData(); |
| } catch (RateLimitException rle) { |
| backOffStrategy.backOff(); |
| } |
| } |
| } |
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| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/streams/util/api/requests/backoff/BackOffStrategy.html#backOff--">backOff</a></span>()</code> |
| <div class="block">Cause the current thread to sleep for an amount of time based on the implemented strategy.</div> |
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| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/streams/util/api/requests/backoff/BackOffStrategy.html#reset--">reset</a></span>()</code> |
| <div class="block">Rests the back off strategy to its original state.</div> |
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| <h4>backOff</h4> |
| <pre>void backOff() |
| throws <a href="../../../../../../../org/apache/streams/util/api/requests/backoff/BackOffException.html" title="class in org.apache.streams.util.api.requests.backoff">BackOffException</a></pre> |
| <div class="block">Cause the current thread to sleep for an amount of time based on the implemented strategy. If limits are set |
| on the number of times the backOff can be called, an exception will be thrown.</div> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="../../../../../../../org/apache/streams/util/api/requests/backoff/BackOffException.html" title="class in org.apache.streams.util.api.requests.backoff">BackOffException</a></code> - BackOffException</dd> |
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| <h4>reset</h4> |
| <pre>void reset()</pre> |
| <div class="block">Rests the back off strategy to its original state. |
| After the call the strategy will act as if <a href="../../../../../../../org/apache/streams/util/api/requests/backoff/AbstractBackOffStrategy.html#backOff--"><code>AbstractBackOffStrategy.backOff()</code></a> |
| has never been called.</div> |
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