add upstream context to weasyprint html generation

app/controllers/administrateurs/attestation_template_v2s_controller.rb

@@ -20,9 +20,21 @@ module Administrateurs
         format.pdf do
           html = render_to_string('/administrateurs/attestation_template_v2s/show', layout: 'attestation', formats: [:html])
 
-          result = Typhoeus.post(WEASYPRINT_URL,
-                                 headers: { 'content-type': 'application/json' },
-                                 body: { html: html }.to_json)
+          headers = {
+            'Content-Type' => 'application/json',
+            'X-Request-Id' => Current.request_id
+          }
+
+          body = {
+            html: html,
+            upstream_context: {
+              procedure_id: @procedure.id,
+              path: request.path,
+              user_id: current_user.id
+            }
+          }.to_json
+
+          result = Typhoeus.post(WEASYPRINT_URL, headers:, body:)
 
           send_data(result.body, filename: 'attestation.pdf', type: 'application/pdf', disposition: 'inline')
         end