added trend dynamicDP in filters and GetTrendSummary API

engine/dynamicdp.go

@@ -29,12 +29,13 @@ import (
 	"github.com/cgrates/cgrates/utils"
 )
 
-func newDynamicDP(resConns, stsConns, apiConns []string,
+func newDynamicDP(resConns, stsConns, apiConns, trdConns []string,
 	tenant string, initialDP utils.DataProvider) *dynamicDP {
 	return &dynamicDP{
 		resConns:  resConns,
 		stsConns:  stsConns,
 		apiConns:  apiConns,
+		trdConns:  trdConns,
 		tenant:    tenant,
 		initialDP: initialDP,
 		cache:     utils.MapStorage{},
@@ -45,6 +46,7 @@ type dynamicDP struct {
 	resConns  []string
 	stsConns  []string
 	apiConns  []string
+	trdConns  []string
 	tenant    string
 	initialDP utils.DataProvider
 
@@ -142,6 +144,15 @@ func (dDP *dynamicDP) fieldAsInterface(fldPath []string) (val any, err error) {
 			dDP.cache.Set([]string{utils.MetaStats, fldPath[1], k}, v)
 		}
 		return dDP.cache.FieldAsInterface(fldPath)
+	case utils.MetaTrends:
+		//sample of fieldName : ~*trends.TrendID.*acd.Value
+		var trendSum TrendSummary
+		if err := connMgr.Call(context.TODO(), dDP.trdConns, utils.TrendSv1GetTrendSummary, &utils.TenantIDWithAPIOpts{TenantID: &utils.TenantID{Tenant: dDP.tenant, ID: fldPath[1]}}, &trendSum); err != nil {
+			return nil, err
+		}
+		dp := config.NewObjectDP(trendSum)
+		dDP.cache.Set(fldPath[:2], dp)
+		return dp.FieldAsInterface(fldPath[2:])
 	case utils.MetaLibPhoneNumber:
 		// sample of fieldName ~*libphonenumber.<~*req.Destination>
 		// or ~*libphonenumber.<~*req.Destination>.Carrier