Allow longer timeout for config apply

internal/api/handlers_test.go

@@ -12,6 +12,7 @@ import (
 	"strconv"
 	"strings"
 	"testing"
+	"time"
 
 	"github.com/go-chi/chi/v5"
 )
@@ -225,3 +226,45 @@ func TestHandler_ProxyAgentMapsConfigCandidateApply(t *testing.T) {
 		t.Fatalf("expected candidate apply response, got %s", rr.Body.String())
 	}
 }
+
+func TestHandler_ProxyAgentMapsLongRunningConfigCandidateApply(t *testing.T) {
+	agentServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if r.Method != http.MethodPost {
+			t.Fatalf("expected POST, got %s", r.Method)
+		}
+		if r.URL.Path != "/v1/config/candidate/apply" {
+			t.Fatalf("expected /v1/config/candidate/apply, got %s", r.URL.Path)
+		}
+		time.Sleep(3500 * time.Millisecond)
+		w.Header().Set("Content-Type", "application/json")
+		_, _ = w.Write([]byte(`{"ok":true,"status":{"metadata":{"config_id":"candidate"}}}`))
+	}))
+	defer agentServer.Close()
+
+	host, portText, err := net.SplitHostPort(strings.TrimPrefix(agentServer.URL, "http://"))
+	if err != nil {
+		t.Fatalf("parse test server address: %v", err)
+	}
+	port, err := strconv.Atoi(portText)
+	if err != nil {
+		t.Fatalf("parse test server port: %v", err)
+	}
+
+	cfg := &config.Config{}
+	agent := service.NewAgentClient(cfg)
+	reg := service.NewRegistryService(cfg, agent)
+	reg.UpdateDevice(&models.Device{DeviceID: "edge-01", IP: host, AgentPort: port})
+	h := NewHandler(nil, reg, agent, nil, nil)
+
+	r := chi.NewRouter()
+	r.Post("/api/devices/{id}/config/candidate/apply", h.ProxyAgent)
+	rr := httptest.NewRecorder()
+	r.ServeHTTP(rr, httptest.NewRequest(http.MethodPost, "/api/devices/edge-01/config/candidate/apply", nil))
+
+	if rr.Code != http.StatusOK {
+		t.Fatalf("expected status 200, got %d: %s", rr.Code, rr.Body.String())
+	}
+	if !strings.Contains(rr.Body.String(), "candidate") {
+		t.Fatalf("expected candidate apply response, got %s", rr.Body.String())
+	}
+}

internal/service/agent_client.go

@@ -101,6 +101,9 @@ func isLongOp(method, path string) bool {
 	if method == http.MethodPut && path == "/v1/config" {
 		return true
 	}
+	if method == http.MethodPost && path == "/v1/config/candidate/apply" {
+		return true
+	}
 	if strings.HasPrefix(path, "/v1/config/ui/") {
 		return true
 	}