Add support for *value_exponent in AgentRequest

agents/agentreq.go

@@ -20,6 +20,7 @@ package agents
 
 import (
 	"fmt"
+	"math"
 	"net"
 	"strconv"
 	"strings"
@@ -258,6 +259,30 @@ func (aReq *AgentRequest) ParseField(
 			iFaceVals[i] = utils.StringToInterface(strVal)
 		}
 		out, err = utils.Sum(iFaceVals...)
+	case utils.MetaValueExponent:
+		if len(cfgFld.Value) != 2 {
+			return nil, fmt.Errorf("invalid arguments <%s> to %s",
+				utils.ToJSON(cfgFld.Value), utils.MetaValueExponent)
+		}
+		strVal1, err := cfgFld.Value[0].ParseDataProvider(aReq, utils.NestingSep) // String Value
+		if err != nil {
+			return "", err
+		}
+		val, err := strconv.ParseFloat(strVal1, 64)
+		if err != nil {
+			return "", fmt.Errorf("invalid value <%s> to %s",
+				strVal1, utils.MetaValueExponent)
+		}
+		strVal2, err := cfgFld.Value[1].ParseDataProvider(aReq, utils.NestingSep) // String Exponent
+		if err != nil {
+			return "", err
+		}
+		exp, err := strconv.Atoi(strVal2)
+		if err != nil {
+			return "", err
+		}
+		out = strconv.FormatFloat(utils.Round(val*math.Pow10(exp),
+			config.CgrConfig().GeneralCfg().RoundingDecimals, utils.ROUNDING_MIDDLE), 'f', -1, 64)
 	}
 
 	if err != nil &&

agents/agentreq_test.go

@@ -408,3 +408,29 @@ func TestAgReqEmptyFilter(t *testing.T) {
 		t.Errorf("expecting: %+v, received: %+v", eMp, mpOut)
 	}
 }
+
+func TestAgReqMetaExponent(t *testing.T) {
+	data, _ := engine.NewMapStorage()
+	dm := engine.NewDataManager(data)
+	cfg, _ := config.NewDefaultCGRConfig()
+	filterS := engine.NewFilterS(cfg, nil, dm)
+	agReq := newAgentRequest(nil, nil, nil, nil, "cgrates.org", "", filterS)
+	agReq.CGRRequest.Set([]string{"Value"}, "2", false, false)
+	agReq.CGRRequest.Set([]string{"Exponent"}, "2", false, false)
+
+	tplFlds := []*config.FCTemplate{
+		&config.FCTemplate{Tag: "TestExpo", Filters: []string{},
+			FieldId: "TestExpo", Type: utils.MetaValueExponent,
+			Value: config.NewRSRParsersMustCompile("~*cgreq.Value;~*cgreq.Exponent", true, utils.INFIELD_SEP)},
+	}
+	eMp := config.NewNavigableMap(nil)
+	eMp.Set([]string{"TestExpo"}, []*config.NMItem{
+		&config.NMItem{Data: "200", Path: []string{"TestExpo"},
+			Config: tplFlds[0]}}, false, true)
+
+	if mpOut, err := agReq.AsNavigableMap(tplFlds); err != nil {
+		t.Error(err)
+	} else if !reflect.DeepEqual(eMp, mpOut) {
+		t.Errorf("expecting: %+v, \n received: %+v", eMp, mpOut)
+	}
+}

utils/consts.go

@@ -318,6 +318,7 @@ const (
 	META_USAGE_DIFFERENCE        = "*usage_difference"
 	MetaVariable                 = "*variable"
 	MetaCCUsage                  = "*cc_usage"
+	MetaValueExponent            = "*value_exponent"
 	MetaString                   = "*string"
 	NegativePrefix               = "!"
 	MatchStartPrefix             = "^"