fix: inject provider, agent id and generation to get_user_print_info to ensure correct metadata

src/slic3r/GUI/DeviceCore/DevManager.cpp

@@ -847,7 +847,23 @@ namespace Slic3r
         try
         {
             json j = json::parse(body);
-            const std::string provider = GUI::wxGetApp().get_printer_cloud_provider();
+
+            const bool has_request_context = j.contains("provider") && j.contains("agent_id") && j.contains("generation");
+            const std::string provider = j.contains("provider") ? j["provider"].get<std::string>()
+                                                                   : GUI::wxGetApp().get_printer_cloud_provider();
+            const std::string agent_id = j.contains("agent_id") ? j["agent_id"].get<std::string>()
+                                                                  : get_current_printer_agent_id();
+            const std::uint64_t generation = j.value("generation", std::uint64_t(0));
+
+            if (has_request_context &&
+                (provider != GUI::wxGetApp().get_printer_cloud_provider() ||
+                 agent_id != get_current_printer_agent_id() ||
+                 generation != (m_agent ? m_agent->get_user_machine_list_generation() : 0))) {
+                BOOST_LOG_TRIVIAL(debug) << __FUNCTION__ << ": ignoring stale response provider="
+                                         << provider << " agent_id=" << agent_id
+                                         << " generation=" << generation;
+                return;
+            }
 
 #if !BBL_RELEASE_TO_PUBLIC
             BOOST_LOG_TRIVIAL(info) << __FUNCTION__ << ": " << j;
@@ -872,12 +888,12 @@ namespace Slic3r
                         obj->set_dev_id(dev_id);
                         // A device can be rediscovered by a different agent after a preset
                         // switch while retaining the same MachineObject instance.
-                        obj->printer_agent_id = get_current_printer_agent_id();
+                        obj->printer_agent_id = agent_id;
                     }
                     else
                     {
                         obj = new MachineObject(this, m_agent, "", "", "");
-                        obj->printer_agent_id = get_current_printer_agent_id();
+                        obj->printer_agent_id = agent_id;
                         if (m_agent)
                         {
                             obj->set_bind_status(m_agent->get_user_name(provider));

src/slic3r/Utils/NetworkAgent.cpp

@@ -4,6 +4,7 @@
 #include <algorithm>
 
 #include <boost/log/trivial.hpp>
+#include <nlohmann/json.hpp>
 #include "IPrinterAgent.hpp"
 #include "libslic3r/Utils.hpp"
 #include "NetworkAgent.hpp"
@@ -116,6 +117,8 @@ void NetworkAgent::add_cloud_agent(const std::string& provider, std::shared_ptr<
 
 void NetworkAgent::set_printer_agent(std::shared_ptr<IPrinterAgent> printer_agent)
 {
+    m_user_machine_list_generation.fetch_add(1);
+
     // Disconnect all callbacks from the old agent
     auto old_printer_agent = m_printer_agent;
 
@@ -433,10 +436,26 @@ int NetworkAgent::check_user_task_report(int* task_id, bool* printable, const st
 
 int NetworkAgent::get_user_print_info(unsigned int* http_code, std::string* http_body, const std::string& provider)
 {
+    const std::string request_agent_id = m_printer_agent_id;
+    const std::uint64_t request_generation = m_user_machine_list_generation.fetch_add(1) + 1;
     const auto cloud_agent = get_cloud_agent(provider);
-    if (cloud_agent)
-        return cloud_agent->get_user_print_info(http_code, http_body);
-    return -1;
+    if (!cloud_agent)
+        return -1;
+
+    const int result = cloud_agent->get_user_print_info(http_code, http_body);
+    if (result == 0 && http_body) {
+        try {
+            nlohmann::json response = nlohmann::json::parse(*http_body);
+            response["provider"] = provider;
+            response["agent_id"] = request_agent_id;
+            response["generation"] = request_generation;
+            *http_body = response.dump();
+        }
+        catch (const std::exception& e) {
+            BOOST_LOG_TRIVIAL(error) << __FUNCTION__ << " metadata injection exception=" << e.what();
+        }
+    }
+    return result;
 }
 
 int NetworkAgent::get_user_tasks(TaskQueryParams params, std::string* http_body, const std::string& provider)

src/slic3r/Utils/NetworkAgent.hpp

@@ -8,6 +8,8 @@
 #include "IPrinterAgent.hpp"
 
 #include <map>
+#include <atomic>
+#include <cstdint>
 #include <memory>
 #include <string>
 #include <vector>
@@ -54,6 +56,7 @@ public:
     // Sub-agent accessors
     std::shared_ptr<ICloudServiceAgent> get_cloud_agent(const std::string& provider = ORCA_CLOUD_PROVIDER) const;
     std::shared_ptr<IPrinterAgent> get_printer_agent() const { return m_printer_agent; }
+    std::uint64_t get_user_machine_list_generation() const { return m_user_machine_list_generation.load(); }
 
     // Shared agent management
     void add_cloud_agent(const std::string& provider, std::shared_ptr<ICloudServiceAgent> agent);
@@ -214,6 +217,7 @@ private:
     std::map<std::string, std::shared_ptr<ICloudServiceAgent>> m_cloud_agents;
     std::shared_ptr<IPrinterAgent> m_printer_agent;
     std::string m_printer_agent_id;
+    std::atomic<std::uint64_t> m_user_machine_list_generation{0};
 };
 
 }