feat: enhance DoH profile management and resolver policy in modules

- Added `DohResolverPolicy` schema to OpenAPI documentation, defining policies for domain resolution.
- Updated module handling to support multiple DoH profiles via `doh_profile_ids` and introduced `doh_resolver_policy` in the API.
- Refactored related functions to accommodate the new DoH profile structure, ensuring backward compatibility with existing `doh_profile_id`.
- Enhanced UI components to allow selection and management of DoH profiles and policies in the web interface.
- Updated database interactions to handle new fields and ensure proper data normalization.

internal/pipeline/doh_resolve_test.go

@@ -0,0 +1,148 @@
+package pipeline
+
+import (
+	"context"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"evobgp/internal/store"
+)
+
+func TestResolveDomainIPsWithPolicy_Union(t *testing.T) {
+	srvRU := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		_, _ = w.Write([]byte(`{"Answer":[{"type":1,"data":"198.51.100.1"}]}`))
+	}))
+	defer srvRU.Close()
+	srvEU := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		_, _ = w.Write([]byte(`{"Answer":[{"type":1,"data":"203.0.113.1"}]}`))
+	}))
+	defer srvEU.Close()
+
+	profiles := []*store.DohProfile{
+		{URL: srvRU.URL},
+		{URL: srvEU.URL},
+	}
+	ips, err := resolveDomainIPsWithPolicy(context.Background(), srvRU.Client(), profiles, store.DohPolicyUnion, "example.com")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(ips) != 2 {
+		t.Fatalf("want 2 ips, got %v", ips)
+	}
+	seen := map[string]bool{ips[0].String(): true, ips[1].String(): true}
+	if !seen["198.51.100.1"] || !seen["203.0.113.1"] {
+		t.Fatalf("unexpected ips: %v", ips)
+	}
+}
+
+func TestResolveDomainIPsWithPolicy_Failover(t *testing.T) {
+	var calls int
+	srvBad := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		calls++
+		http.Error(w, "fail", http.StatusBadGateway)
+	}))
+	defer srvBad.Close()
+	srvOK := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		calls++
+		_, _ = w.Write([]byte(`{"Answer":[{"type":1,"data":"198.51.100.5"}]}`))
+	}))
+	defer srvOK.Close()
+
+	profiles := []*store.DohProfile{
+		{URL: srvBad.URL},
+		{URL: srvOK.URL},
+	}
+	ips, err := resolveDomainIPsWithPolicy(context.Background(), srvBad.Client(), profiles, store.DohPolicyFailover, "example.com")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(ips) != 1 || ips[0].String() != "198.51.100.5" {
+		t.Fatalf("unexpected ips: %v", ips)
+	}
+	if calls < 2 {
+		t.Fatalf("want at least 2 resolver calls, got %d", calls)
+	}
+}
+
+func TestResolveDomainIPsWithPolicy_PrimaryOnly(t *testing.T) {
+	var secondCalled bool
+	srv1 := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		_, _ = w.Write([]byte(`{"Answer":[{"type":1,"data":"198.51.100.9"}]}`))
+	}))
+	defer srv1.Close()
+	srv2 := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		secondCalled = true
+		_, _ = w.Write([]byte(`{"Answer":[{"type":1,"data":"203.0.113.9"}]}`))
+	}))
+	defer srv2.Close()
+
+	profiles := []*store.DohProfile{
+		{URL: srv1.URL},
+		{URL: srv2.URL},
+	}
+	ips, err := resolveDomainIPsWithPolicy(context.Background(), srv1.Client(), profiles, store.DohPolicyPrimaryOnly, "example.com")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(ips) != 1 || ips[0].String() != "198.51.100.9" {
+		t.Fatalf("unexpected ips: %v", ips)
+	}
+	if secondCalled {
+		t.Fatal("secondary resolver must not be queried in primary_only mode")
+	}
+}
+
+func TestCollectModulePrefixRows_DohUnion(t *testing.T) {
+	m := store.NewMemory()
+	m.SeedDemo()
+	tenant, _, _, _, _ := m.DemoIDs()
+
+	mod, err := m.CreateModule(tenant, &store.Module{
+		Type:              "DOMAINS",
+		Name:              "domains-union",
+		Enabled:           true,
+		DohResolverPolicy: store.DohPolicyUnion,
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	srvRU := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		_, _ = w.Write([]byte(`{"Answer":[{"type":1,"data":"198.51.100.2"}]}`))
+	}))
+	defer srvRU.Close()
+	srvEU := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		_, _ = w.Write([]byte(`{"Answer":[{"type":1,"data":"203.0.113.2"}]}`))
+	}))
+	defer srvEU.Close()
+
+	ru, err := m.CreateDohProfile(tenant, &store.DohProfile{Name: "ru", URL: srvRU.URL})
+	if err != nil {
+		t.Fatal(err)
+	}
+	eu, err := m.CreateDohProfile(tenant, &store.DohProfile{Name: "eu", URL: srvEU.URL})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if _, err := m.UpdateModule(tenant, mod.ID, &store.ModulePatch{
+		DohProfileIDs: &[]string{ru.ID, eu.ID},
+	}); err != nil {
+		t.Fatal(err)
+	}
+	mod, err = m.GetModule(tenant, mod.ID)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if _, err := m.CreateDomainEntry(tenant, mod.ID, &store.DomainEntry{FQDN: "svc.example.com"}); err != nil {
+		t.Fatal(err)
+	}
+
+	rows, err := collectModulePrefixRows(context.Background(), m, srvRU.Client(), tenant, mod, nil)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(rows) != 2 {
+		t.Fatalf("want 2 prefix rows, got %+v", rows)
+	}
+}