# Parsing of logs with multiline filter

**URL:** <https://discuss.elastic.co/t/parsing-of-logs-with-multiline-filter/67709>\
**Category:** Logstash\
**Created:** [December 1, 2016, 6:12am UTC](https://discuss.elastic.co/t/parsing-of-logs-with-multiline-filter/67709 "2016-12-01T06:12:31Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![Rajat\_Singh](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/rajat_singh/32/48128_2.png) [@Rajat\_Singh](https://discuss.elastic.co/u/Rajat_Singh)\
**Post date:** [December 1, 2016, 6:12am UTC](https://discuss.elastic.co/t/parsing-of-logs-with-multiline-filter/67709/1 "2016-12-01T06:12:31Z")

</div>

i am java stack trace need to parse i am not getting the pattern to do the same i had tried different patterns for the same  
Current Date : Tue Sep 06 05:56:51 EDT 2016 | Current user : admin  
Exception during logging :  
java.lang.NullPointerException  
at com.usb2c.core.interceptors.Usb2cProductValidateInterceptor.onValidate(Usb2cProductValidateInterceptor.java:53)  
at de.hybris.platform.servicelayer.internal.model.impl.wrapper.ModelWrapper.invokeValidateInterceptors(ModelWrapper.java:272)  
at de.hybris.platform.servicelayer.internal.model.impl.wrapper.ModelWrapper.validate(ModelWrapper.java:216)  
at de.hybris.platform.servicelayer.internal.model.extractor.impl.DefaultModelExtractor.process(DefaultModelExtractor.java:60)  
at de.hybris.platform.servicelayer.internal.model.impl.DefaultModelService.performPersistenceOperations(DefaultModelService.java:625)  
at de.hybris.platform.servicelayer.internal.model.impl.DefaultModelService.saveAllInternal(DefaultModelService.java:620)  
at de.hybris.platform.servicelayer.internal.model.impl.DefaultModelService.saveAll(DefaultModelService.java:600)  
at de.hybris.platform.servicelayer.internal.model.impl.DefaultModelService.save(DefaultModelService.java:548)  
at de.hybris.platform.servicelayer.impex.impl.SLImpexImportCUDHandler.doCreate(SLImpexImportCUDHandler.java:111)  
at de.hybris.platform.impex.jalo.imp.DefaultImpExImportCUDHandler.create(DefaultImpExImportCUDHandler.java:221)  
at de.hybris.platform.impex.jalo.imp.DefaultImportProcessor.processItemCreation(DefaultImportProcessor.java:746)  
at de.hybris.platform.impex.jalo.imp.DefaultImportProcessor.processInsertLine(DefaultImportProcessor.java:514)  
at de.hybris.platform.impex.jalo.imp.DefaultImportProcessor.processInsertUpdateLineInternal(DefaultImportProcessor.java:446)  
at de.hybris.platform.impex.jalo.imp.DefaultImportProcessor.access$0(DefaultImportProcessor.java:439)  
at de.hybris.platform.impex.jalo.imp.DefaultImportProcessor$3.execute(DefaultImportProcessor.java:428)  
at de.hybris.platform.impex.jalo.imp.DefaultImportProcessor$3.execute(DefaultImportProcessor.java:1)  
at de.hybris.platform.tx.Transaction.execute(Transaction.java:1195)  
at de.hybris.platform.tx.Transaction.execute(Transaction.java:1160)  
at de.hybris.platform.impex.jalo.imp.DefaultImportProcessor.processInsertUpdateLine(DefaultImportProcessor.java:423)  
at de.hybris.platform.impex.jalo.imp.DefaultImportProcessor.processItemData\_Impl(DefaultImportProcessor.java:250)  
at de.hybris.platform.impex.jalo.imp.DefaultImportProcessor.processItemData(DefaultImportProcessor.java:149)  
at de.hybris.platform.impex.jalo.imp.MultiThreadedImportProcessor.processItemData(MultiThreadedImportProcessor.java:102)  
at de.hybris.platform.impex.jalo.imp.MultiThreadedImpExImportReader.processValueLineFromWorker(MultiThreadedImpExImportReader.java:534)  
at de.hybris.platform.impex.jalo.imp.ImpExWorker.perform(ImpExWorker.java:154)  
at de.hybris.platform.impex.jalo.imp.ImpExWorker.run(ImpExWorker.java:87)  
at de.hybris.platform.util.threadpool.PoolableThread.run(PoolableThread.java:198)

Please help me in order to get the pattern for the above log

---

<div class="post-metadata">

**Author:** ![hartfordfive](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/hartfordfive/32/44794_2.png) [@hartfordfive](https://discuss.elastic.co/u/hartfordfive)\
**Post date:** [December 1, 2016, 1:32pm UTC](https://discuss.elastic.co/t/parsing-of-logs-with-multiline-filter/67709/2 "2016-12-01T13:32:03Z")

</div>

You should be able to use a pattern such as the one below (common for java stack traces) with the codec parameter in your file input:

```
file {
   path => "/your/file/path"
   codec => multiline {
      pattern => "^\s"
      what => "previous"
   }
}
```

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [December 29, 2016, 1:32pm UTC](https://discuss.elastic.co/t/parsing-of-logs-with-multiline-filter/67709/3 "2016-12-29T13:32:17Z")

</div>

This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.