Learn more about what Sentry uses to create a trail of events (breadcrumbs) that happened prior to an issue.

Sentry uses breadcrumbs to create a trail of events that happened prior to an issue. These events are very similar to traditional logs, but can record more rich structured data.

This page provides an overview of manual breadcrumb recording and customization. Learn more about the information that displays on the Issue Details page and how you can filter breadcrumbs to quickly resolve issues in Using Breadcrumbs.

You can manually add breadcrumbs whenever something interesting happens. For example, you might manually record a breadcrumb if the user authenticates or another state change occurs.

Manually record a breadcrumb:

USentrySubsystem* SentrySubsystem = GEngine->GetEngineSubsystem<USentrySubsystem>();

TMap<FString, FString> AdditionalData;
AdditionalData.Add("SomeKey", "SomeValue");

SentrySubsystem->AddBreadcrumb("Message", "Category", "Type", AdditionalData, ESentryLevel::Info);

The same result can be achieved by calling corresponding function in blueprint:

Add breadcrumb

The Unreal Engine SDK can capture certain types of breadcrumbs automatically. Those can be enabled using the Sentry configuration window at Project Settings > Plugins > Sentry.

Sentry automatic breadcrumbs

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