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| <div class="subTitle">org.apache.beam.sdk.extensions.gcp.util</div> |
| <h2 title="Class CustomHttpErrors" class="title">Class CustomHttpErrors</h2> |
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| <ul class="inheritance"> |
| <li>java.lang.Object</li> |
| <li> |
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| <li>org.apache.beam.sdk.extensions.gcp.util.CustomHttpErrors</li> |
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| <pre>public class <span class="typeNameLabel">CustomHttpErrors</span> |
| extends java.lang.Object</pre> |
| <div class="block">An optional component to use with the <code>RetryHttpRequestInitializer</code> in order to provide |
| custom errors for failing http calls. This class allows you to specify custom error messages |
| which match specific error codes and containing strings in the URL. The first matcher to match |
| the request and response will be used to provide the custom error. |
| |
| <p>The intended use case here is to examine one of the logs emitted by a failing call made by the |
| RetryHttpRequestInitializer, and then adding a custom error message which matches the URL and |
| code for it. |
| |
| <p>Usage: See more in CustomHttpErrorsTest. |
| |
| <pre><code> |
| CustomHttpErrors.Builder builder = new CustomHttpErrors.Builder(); |
| builder.addErrorForCodeAndUrlContains(403,"/tables?", "Custom Error Msg"); |
| CustomHttpErrors customErrors = builder.build(); |
| |
| |
| RetryHttpRequestInitializer initializer = ... |
| initializer.setCustomErrors(customErrors); |
| </code></pre> |
| |
| <p>Suggestions for future enhancements to anyone upgrading this file: |
| |
| <ul> |
| <li>This class is left open for extension, to allow different functions for HttpCallMatcher and |
| HttpCallCustomError to match and log errors. For example, new functionality may include |
| matching an error based on the HttpResponse body. Additionally, extracting and logging |
| strings from the HttpResponse body may make useful functionality. |
| <li>Add a methods to add custom errors based on inspecting the contents of the HttpRequest and |
| HttpResponse |
| <li>Be sure to update the HttpRequestWrapper and HttpResponseWrapper with any new getters that |
| you may use. The wrappers were introduced to add a layer of indirection which could be |
| mocked mocked out in tests. This was unfortunately needed because mockito cannot mock final |
| classes and its non trivial to just construct HttpRequest and HttpResponse objects. |
| <li>Making matchers composable with an AND operator may simplify enhancing this code, if |
| several different matchers are used. |
| </ul> |
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| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/beam/sdk/extensions/gcp/util/CustomHttpErrors.Builder.html" title="class in org.apache.beam.sdk.extensions.gcp.util">CustomHttpErrors.Builder</a></span></code> |
| <div class="block">A Builder which allows building immutable CustomHttpErrors object.</div> |
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| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/beam/sdk/extensions/gcp/util/CustomHttpErrors.MatcherAndError.html" title="class in org.apache.beam.sdk.extensions.gcp.util">CustomHttpErrors.MatcherAndError</a></span></code> |
| <div class="block">A simple Tuple class for creating a list of HttpResponseMatcher and HttpResponseCustomError to |
| print for the responses.</div> |
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| <td class="colFirst"><code>java.lang.String</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/beam/sdk/extensions/gcp/util/CustomHttpErrors.html#getCustomError-org.apache.beam.sdk.extensions.gcp.util.HttpRequestWrapper-org.apache.beam.sdk.extensions.gcp.util.HttpResponseWrapper-">getCustomError</a></span>(org.apache.beam.sdk.extensions.gcp.util.HttpRequestWrapper req, |
| org.apache.beam.sdk.extensions.gcp.util.HttpResponseWrapper res)</code> </td> |
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| <h4>getCustomError</h4> |
| <pre>public java.lang.String getCustomError(org.apache.beam.sdk.extensions.gcp.util.HttpRequestWrapper req, |
| org.apache.beam.sdk.extensions.gcp.util.HttpResponseWrapper res)</pre> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>The the first custom error for the failing request and response to match, or null.</dd> |
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