Filter event reporter payloads during encoding #37
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zzak
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Jul 20, 2025
| private | ||
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| def self.transform_event(event) | ||
| parameter_filter = ActiveSupport::ParameterFilter.new(ActiveSupport.filter_parameters, mask: ActiveSupport::ParameterFilter::FILTERED) |
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We probably want to memoize this somewhere
Ref: rails#50452 This adds a Structured Event Reporter to Rails, accessible via `Rails.event`. It allows you to report events to a subscriber, and provides mechanisms for adding tags and context to events. Events encompass "structured logs", but also "business events", as well as telemetry events such as metrics and logs. The Event Reporter is designed to be a single interface for producing any kind of event in a Rails application. We separate the emission of events from how these events reach end consumers; applications are expected to define their own subscribers, and the Event Reporter is responsible for emitting events to these subscribers.
Add JSON and MessagePack encoders to ActiveSupport::EventReporter. This allows applications to serialize events to common formats without needing to implement their own serialization logic in subscribers.
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This is one option I came up with for filtering potentially sensitive payload data.
We filter the data as late as possible to be able to strip secrets from even custom objects.
/cc @adrianna-chang-shopify