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Filter Sentry gtag errors #4968

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merged 2 commits into from
Jun 25, 2024
Merged

Filter Sentry gtag errors #4968

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c75c155
Filter gtag and fetch JS errors from Sentry
steventux Jun 19, 2024
8560424
Filter out cookie banner JS errors from Sentry
steventux Jun 19, 2024
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21 changes: 20 additions & 1 deletion config/initializers/sentry.rb
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Original file line number Diff line number Diff line change
@@ -1,13 +1,32 @@
# frozen_string_literal: true

FILTERABLE_JS_ERRORS = [
"Failed to fetch",
"NetworkError when attempting to fetch resource.",
].freeze

def cookie_banner_js_event?(event, hint)
hint[:exception].is_a?(Error) &&
event.tags["mechanism"] == "onunhandledrejection" &&
event.exception.values.any? { |ex| ex.value.include?("[object Response]") }
end

def filterable_js_event?(event, hint)
hint[:exception].is_a?(TypeError) && event.exception.values.any? do |exception|
FILTERABLE_JS_ERRORS.include?(exception.value)
end
end

Sentry.init do |config|
config.enabled_environments = %w[production sandbox staging review]
config.dsn = config.enabled_environments.include?(Rails.env) ? Rails.application.credentials.SENTRY_DSN : "disabled"
config.breadcrumbs_logger = %i[active_support_logger http_logger]
config.release = "#{ENV['RELEASE_VERSION']}-#{ENV['SHA']}"

filter = ActiveSupport::ParameterFilter.new(Rails.application.config.filter_parameters)
config.before_send = lambda do |event, _hint|
config.before_send = lambda do |event, hint|
return nil if filterable_js_event?(event, hint) || cookie_banner_js_event?(event, hint)

# use Rails' parameter filter to sanitize the event
filter.filter(event.to_hash)
end
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