Support sending measurements via TransactionEvent

sentry-ruby/lib/sentry/client.rb

@@ -112,6 +112,10 @@ def event_from_transaction(transaction)
         event.start_timestamp = transaction.start_timestamp
         event.tags = transaction.tags
 
+        if configuration.experiments.custom_measurements
+          event.measurements = transaction.measurements
+        end
+
         finished_spans = transaction.span_recorder.spans.select { |span| span.timestamp && span != transaction }
         event.spans = finished_spans.map(&:to_hash)
       end

sentry-ruby/lib/sentry/transaction_event.rb

@@ -8,6 +8,9 @@ class TransactionEvent < Event
     # @return [<Array[Span]>]
     attr_accessor :spans
 
+    # @return [Hash]
+    attr_accessor :measurements
+
     # @return [Float, nil]
     attr_reader :start_timestamp
 
@@ -23,6 +26,7 @@ def to_hash
       data = super
       data[:spans] = @spans.map(&:to_hash) if @spans
       data[:start_timestamp] = @start_timestamp
+      data[:measurements] = @measurements
       data
     end
   end

sentry-ruby/spec/sentry/transaction_spec.rb

@@ -453,5 +453,31 @@
         expect(subject.name).to eq("<unlabeled transaction>")
       end
     end
+
+    context "config.experiments.custom_measurements = true" do
+      before do
+        Sentry.configuration.experiments.custom_measurements = true
+      end
+
+      it "adds measurements the event" do
+        subject.set_measurement("metric.foo", 0.5, "second")
+        subject.finish
+
+        transaction = events.last.to_hash
+        expect(transaction[:measurements]).to eq(
+          { "metric.foo" => { value: 0.5, unit: "second" } }
+        )
+      end
+    end
+
+    context "config.experiments.custom_measurements = false" do
+      it "adds measurements the event" do
+        subject.set_measurement("metric.foo", 0.5, "second")
+        subject.finish
+
+        transaction = events.last.to_hash
+        expect(transaction[:measurements]).to eq(nil)
+      end
+    end
   end
 end