Issue Description

(Similar to #1911)

Hello,

I got the error Transaction sending failed: "\xD9" from ASCII-8BIT to UTF-8 that's raised from this method:

Here is the log:

We're using MessagePack to serialize data before storing them into Redis. The encoding of the string returned by MessagePack is ASCII_8BIT. This string is captured in a Sentry span description, and the serialization into JSON fails due to the invalid encoding:

We try to fix this issue using the before_send hook, but unfortunately we've not been able to find spans in the event object.

We finally fixed this issue by monkey patching the set_description method of the Sentry::Span class:

Is this a known issue that should be fixed in Sentry SDK directly? If not, is there a way to deal with non UTF-8 string using the before_send hook?

Reproduction Steps

In a Rails project with Sentry and MessagePack installed:

Sentry.capture_message(MessagePack.pack('test message'))

Expected Behavior

Event is sent to Sentry.

Actual Behavior

Event isn't sent to Sentry.

Ruby Version

2.7.4

SDK Version

5.7.0

Integration and Its Version

rails (6.0.5.1), sentry-rails (5.7.0), sidekiq (5.2.2), sentry-sidekiq (5.7.0)

Sentry Config

# frozen_string_literal: true

Sentry.init do |config|
  config.dsn = ENV['SENTRY_DSN']
  config.breadcrumbs_logger = [:active_support_logger, :http_logger]

  # Tracing Options
  config.traces_sample_rate = 1.0
end