Use continue_trace in sentry-rails

CHANGELOG.md

@@ -11,7 +11,8 @@
   config.trace_propagation_targets = [/example.com/, 'foobar.org/api/v2']
   ```
 - Tracing without Performance
-  - Implement `PropagationContext` on `Scope` and add `Sentry.get_trace_propagation_headers` API [#2084](https://github.com/getsentry/sentry-ruby/pull/2084)
+  - Implement `PropagationContext` on `Scope` and add new `Sentry.get_trace_propagation_headers` API [#2084](https://github.com/getsentry/sentry-ruby/pull/2084)
+  - Add new `Sentry.continue_trace` API [#2089](https://github.com/getsentry/sentry-ruby/pull/2089)
 
   The SDK now supports connecting arbitrary events (Errors / Transactions / Replays) across distributed services and not just Transactions.  
   To continue an incoming trace starting with this version of the SDK, use `Sentry.continue_trace` as follows.

sentry-rails/lib/sentry/rails/action_cable.rb

@@ -33,11 +33,8 @@ def capture(connection, transaction_name:, extra_context: nil, &block)
           end
 
           def start_transaction(env, scope)
-            sentry_trace = env["HTTP_SENTRY_TRACE"]
-            baggage = env["HTTP_BAGGAGE"]
-
             options = { name: scope.transaction_name, source: scope.transaction_source, op: OP_NAME }
-            transaction = Sentry::Transaction.from_sentry_trace(sentry_trace, baggage: baggage, **options) if sentry_trace
+            transaction = Sentry.continue_trace(env, **options)
             Sentry.start_transaction(transaction: transaction, **options)
           end
 

sentry-rails/lib/sentry/rails/capture_exceptions.rb

@@ -32,16 +32,13 @@ def capture_exception(exception, env)
       end
 
       def start_transaction(env, scope)
-        sentry_trace = env["HTTP_SENTRY_TRACE"]
-        baggage = env["HTTP_BAGGAGE"]
-
         options = { name: scope.transaction_name, source: scope.transaction_source, op: transaction_op }
 
         if @assets_regexp && scope.transaction_name.match?(@assets_regexp)
           options.merge!(sampled: false)
         end
 
-        transaction = Sentry::Transaction.from_sentry_trace(sentry_trace, baggage: baggage, **options) if sentry_trace
+        transaction = Sentry.continue_trace(env, **options)
         Sentry.start_transaction(transaction: transaction, custom_sampling_context: { env: env }, **options)
       end