Use telemetry.report for reporting route extraction errors

Author: y9v

lib/datadog/appsec/api_security/route_extractor.rb

@@ -64,6 +64,9 @@ def self.route_pattern(request)
             #       it does not have all the methods that ActionDispatch::Request has.
             #       Before trying to use the router to recognize the route, we need to
             #       create a new ActionDispatch::Request from the request env
+            #
+            # NOTE: Rails mutates HEAD request by changing the method to GET
+            #       and uses it for route recognition to check if the route is defined
             request = request.env[RAILS_ROUTES_KEY].request_class.new(request.env)
 
             pattern = request.env[RAILS_ROUTES_KEY].router
@@ -78,8 +81,8 @@ def self.route_pattern(request)
           else
             Tracing::Contrib::Rack::RouteInference.read_or_infer(request.env)
           end
-        rescue
-          AppSec.telemetry&.error('AppSec: Could not extract route pattern for APISecurity sampler')
+        rescue => e
+          AppSec.telemetry&.report(e, description: 'AppSec: Could not extract route pattern')
 
           nil
         end

spec/datadog/appsec/api_security/route_extractor_spec.rb

@@ -219,7 +219,8 @@
         it { expect(described_class.route_pattern(request)).to be_nil }
 
         it 'reports the error via telemetry' do
-          expect(telemetry).to receive(:error).with('AppSec: Could not extract route pattern for APISecurity sampler')
+          expect(telemetry).to receive(:report)
+            .with(an_instance_of(StandardError), description: 'AppSec: Could not extract route pattern')
 
           described_class.route_pattern(request)
         end