Files
cgrates/ees/ees_test.go
ionutboangiu 49d6b8d565 Ensure CostDetails is of *EventCost type when parsing dynamicDP
CGREventWithEeIDs has also been optimized and properly tested. Comments
have been added explaining the process.

When sending a request to AttributeS from EEs, CostDetails from the reply
will now be overwritten by the original CostDetails to preserve its type.
The downside is that we are assuming that CostDetails was not altered by
AttributeS. We might consider adding a type check against *engine.EventCost
to at least stay backwards compatible with *gob and *internal connections.

general_tests/ees_it_test.go has been updated to ensure changes are working
properly.
2024-03-04 09:49:15 +01:00

565 lines
19 KiB
Go

/*
Real-time Online/Offline Charging System (OCS) for Telecom & ISP environments
Copyright (C) ITsysCOM GmbH
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>
*/
package ees
import (
"bytes"
"log"
"os"
"reflect"
"strings"
"testing"
"time"
"github.com/cgrates/birpc"
"github.com/cgrates/birpc/context"
"github.com/cgrates/cgrates/config"
"github.com/cgrates/cgrates/engine"
"github.com/cgrates/cgrates/utils"
"github.com/cgrates/ltcache"
"github.com/cgrates/rpcclient"
)
func TestListenAndServe(t *testing.T) {
cfg := config.NewDefaultCGRConfig()
cfg.EEsCfg().Cache = make(map[string]*config.CacheParamCfg)
cfg.EEsCfg().Cache = map[string]*config.CacheParamCfg{
utils.MetaFileCSV: {
Limit: -1,
TTL: 5 * time.Second,
},
utils.MetaNone: {
Limit: 0,
},
}
newIDb := engine.NewInternalDB(nil, nil, true, cfg.DataDbCfg().Items)
newDM := engine.NewDataManager(newIDb, cfg.CacheCfg(), nil)
filterS := engine.NewFilterS(cfg, nil, newDM)
eeS := NewEventExporterS(cfg, filterS, nil)
stopChan := make(chan struct{}, 1)
cfgRld := make(chan struct{}, 1)
cfgRld <- struct{}{}
go func() {
stopChan <- struct{}{}
}()
var err error
utils.Logger, err = utils.Newlogger(utils.MetaStdLog, utils.EmptyString)
if err != nil {
t.Error(err)
}
utils.Logger.SetLogLevel(6)
logBuf := new(bytes.Buffer)
log.SetOutput(logBuf)
eeS.ListenAndServe(stopChan, cfgRld)
logExpect := "[INFO] <EEs> reloading configuration internals."
if rcv := logBuf.String(); !strings.Contains(rcv, logExpect) {
t.Errorf("Expected %q but received %q", logExpect, rcv)
}
logBuf.Reset()
}
func TestCall(t *testing.T) {
cfg := config.NewDefaultCGRConfig()
newIDb := engine.NewInternalDB(nil, nil, true, cfg.DataDbCfg().Items)
newDM := engine.NewDataManager(newIDb, cfg.CacheCfg(), nil)
filterS := engine.NewFilterS(cfg, nil, newDM)
eeS := NewEventExporterS(cfg, filterS, nil)
errExpect := "UNSUPPORTED_SERVICE_METHOD"
if err := eeS.Call(context.Background(), "test", 24532, 43643); err == nil || err.Error() != errExpect {
t.Errorf("Expected %q but received %q", errExpect, err)
}
}
type testMockEvent struct {
calls map[string]func(args any, reply any) error
}
func (sT *testMockEvent) Call(_ *context.Context, method string, arg any, rply any) error {
if call, has := sT.calls[method]; !has {
return rpcclient.ErrUnsupporteServiceMethod
} else {
return call(arg, rply)
}
}
func TestAttrSProcessEvent(t *testing.T) {
testMock := &testMockEvent{
calls: map[string]func(args any, reply any) error{
utils.AttributeSv1ProcessEvent: func(args, reply any) error {
rplyEv := &engine.AttrSProcessEventReply{
AlteredFields: []string{"testcase"},
CGREvent: &utils.CGREvent{
Event: map[string]any{"testcase": 1},
},
}
*reply.(*engine.AttrSProcessEventReply) = *rplyEv
return nil
},
},
}
cgrEv := &utils.CGREvent{
APIOpts: map[string]any{
utils.OptsAttributesProcessRuns: "10",
},
}
cfg := config.NewDefaultCGRConfig()
cfg.EEsNoLksCfg().AttributeSConns = []string{utils.ConcatenatedKey(utils.MetaInternal, utils.MetaAttributes)}
newIDb := engine.NewInternalDB(nil, nil, true, cfg.DataDbCfg().Items)
newDM := engine.NewDataManager(newIDb, cfg.CacheCfg(), nil)
filterS := engine.NewFilterS(cfg, nil, newDM)
clientConn := make(chan birpc.ClientConnector, 1)
clientConn <- testMock
connMgr := engine.NewConnManager(cfg, map[string]chan birpc.ClientConnector{
utils.ConcatenatedKey(utils.MetaInternal, utils.MetaAttributes): clientConn,
})
eeS := NewEventExporterS(cfg, filterS, connMgr)
// cgrEv := &utils.CGREvent{}
exp := &utils.CGREvent{Event: map[string]any{"testcase": 1}}
if rplyEv, err := eeS.attrSProcessEvent(cgrEv, []string{}, utils.EmptyString); err != nil {
t.Error(err)
} else if !reflect.DeepEqual(exp, rplyEv) {
t.Errorf("Expected %v but received %v", utils.ToJSON(exp), utils.ToJSON(rplyEv))
}
}
func TestAttrSProcessEvent2(t *testing.T) {
engine.Cache.Clear(nil)
testMock := &testMockEvent{
calls: map[string]func(args any, reply any) error{
utils.AttributeSv1ProcessEvent: func(args, reply any) error {
return utils.ErrNotFound
},
},
}
cfg := config.NewDefaultCGRConfig()
cfg.EEsNoLksCfg().AttributeSConns = []string{utils.ConcatenatedKey(utils.MetaInternal, utils.MetaAttributes)}
newIDb := engine.NewInternalDB(nil, nil, true, cfg.DataDbCfg().Items)
newDM := engine.NewDataManager(newIDb, cfg.CacheCfg(), nil)
filterS := engine.NewFilterS(cfg, nil, newDM)
clientConn := make(chan birpc.ClientConnector, 1)
clientConn <- testMock
connMgr := engine.NewConnManager(cfg, map[string]chan birpc.ClientConnector{
utils.ConcatenatedKey(utils.MetaInternal, utils.MetaAttributes): clientConn,
})
eeS := NewEventExporterS(cfg, filterS, connMgr)
cgrEv := &utils.CGREvent{
APIOpts: make(map[string]any),
}
if _, err := eeS.attrSProcessEvent(cgrEv, []string{}, utils.EmptyString); err != nil {
t.Error(err)
}
}
func TestV1ProcessEvent(t *testing.T) {
filePath := "/tmp/TestV1ProcessEvent"
if err := os.MkdirAll(filePath, 0777); err != nil {
t.Error(err)
}
cfg := config.NewDefaultCGRConfig()
cfg.EEsCfg().Exporters[0].Type = "*file_csv"
cfg.EEsCfg().Exporters[0].ID = "SQLExporterFull"
cfg.EEsCfg().Exporters[0].ExportPath = filePath
newIDb := engine.NewInternalDB(nil, nil, true, cfg.DataDbCfg().Items)
newDM := engine.NewDataManager(newIDb, cfg.CacheCfg(), nil)
filterS := engine.NewFilterS(cfg, nil, newDM)
eeS := NewEventExporterS(cfg, filterS, nil)
cgrEv := &engine.CGREventWithEeIDs{
EeIDs: []string{"SQLExporterFull"},
CGREvent: &utils.CGREvent{
Tenant: "cgrates.org",
ID: "voiceEvent",
Time: utils.TimePointer(time.Now()),
Event: map[string]any{
utils.CGRID: utils.Sha1("dsafdsaf", time.Unix(1383813745, 0).UTC().String()),
utils.ToR: utils.MetaVoice,
utils.OriginID: "dsafdsaf",
utils.OriginHost: "192.168.1.1",
utils.RequestType: utils.MetaRated,
utils.Tenant: "cgrates.org",
utils.Category: "call",
utils.AccountField: "1001",
utils.Subject: "1001",
utils.Destination: "1002",
utils.SetupTime: time.Unix(1383813745, 0).UTC(),
utils.AnswerTime: time.Unix(1383813746, 0).UTC(),
utils.Usage: 10 * time.Second,
utils.RunID: utils.MetaDefault,
utils.Cost: 1.01,
"ExtraFields": map[string]string{"extra1": "val_extra1",
"extra2": "val_extra2", "extra3": "val_extra3"},
},
},
}
var rply map[string]map[string]any
rplyExpect := map[string]map[string]any{
"SQLExporterFull": {},
}
if err := eeS.V1ProcessEvent(context.Background(), cgrEv, &rply); err != nil {
t.Error(err)
} else if !reflect.DeepEqual(rply, rplyExpect) {
t.Errorf("Expected %q but received %q", rplyExpect, rply)
}
if err := os.RemoveAll(filePath); err != nil {
t.Error(err)
}
}
func TestV1ProcessEvent2(t *testing.T) {
cfg := config.NewDefaultCGRConfig()
cfg.EEsCfg().Exporters[0].Type = "*file_csv"
cfg.EEsCfg().Exporters[0].ID = "SQLExporterFull"
cfg.EEsCfg().Exporters[0].Filters = []string{"*prefix:~*req.Subject:20"}
newIDb := engine.NewInternalDB(nil, nil, true, cfg.DataDbCfg().Items)
newDM := engine.NewDataManager(newIDb, cfg.CacheCfg(), nil)
filterS := engine.NewFilterS(cfg, nil, newDM)
eeS := NewEventExporterS(cfg, filterS, nil)
cgrEv := &engine.CGREventWithEeIDs{
EeIDs: []string{"SQLExporterFull"},
CGREvent: &utils.CGREvent{
Tenant: "cgrates.org",
ID: "voiceEvent",
Time: utils.TimePointer(time.Now()),
Event: map[string]any{
utils.Subject: "1001",
"ExtraFields": map[string]string{"extra1": "val_extra1",
"extra2": "val_extra2", "extra3": "val_extra3"},
},
APIOpts: map[string]any{
utils.OptsAttributesProcessRuns: "10",
},
},
}
var rply map[string]map[string]any
errExpect := "NOT_FOUND"
if err := eeS.V1ProcessEvent(context.Background(), cgrEv, &rply); err == nil || err.Error() != errExpect {
t.Errorf("Expecting %q but received %q", errExpect, err)
}
errExpect = "NOT_FOUND:test"
eeS.cfg.EEsCfg().Exporters[0].Filters = []string{"test"}
if err := eeS.V1ProcessEvent(context.Background(), cgrEv, &rply); err == nil || err.Error() != errExpect {
t.Errorf("Expecting %q but received %q", errExpect, err)
}
}
func TestV1ProcessEvent3(t *testing.T) {
cfg := config.NewDefaultCGRConfig()
cfg.EEsCfg().Exporters[0].Type = "*file_csv"
cfg.EEsCfg().Exporters[0].ID = "SQLExporterFull"
cfg.EEsCfg().Exporters[0].Flags = utils.FlagsWithParams{
utils.MetaAttributes: utils.FlagParams{},
}
newIDb := engine.NewInternalDB(nil, nil, true, cfg.DataDbCfg().Items)
newDM := engine.NewDataManager(newIDb, cfg.CacheCfg(), nil)
filterS := engine.NewFilterS(cfg, nil, newDM)
eeS := NewEventExporterS(cfg, filterS, nil)
cgrEv := &engine.CGREventWithEeIDs{
EeIDs: []string{"SQLExporterFull"},
CGREvent: &utils.CGREvent{
Tenant: "cgrates.org",
ID: "voiceEvent",
Time: utils.TimePointer(time.Now()),
Event: map[string]any{},
},
}
var rply map[string]map[string]any
errExpect := "MANDATORY_IE_MISSING: [connIDs]"
if err := eeS.V1ProcessEvent(context.Background(), cgrEv, &rply); err == nil || err.Error() != errExpect {
t.Errorf("Expecting %q but received %q", errExpect, err)
}
}
func TestV1ProcessEvent4(t *testing.T) {
cfg := config.NewDefaultCGRConfig()
cfg.EEsCfg().Exporters[0].Type = utils.MetaHTTPPost
cfg.EEsCfg().Exporters[0].ID = "SQLExporterFull"
cfg.EEsCfg().Exporters[0].Synchronous = true
newIDb := engine.NewInternalDB(nil, nil, true, cfg.DataDbCfg().Items)
newDM := engine.NewDataManager(newIDb, cfg.CacheCfg(), nil)
filterS := engine.NewFilterS(cfg, nil, newDM)
eeS := NewEventExporterS(cfg, filterS, nil)
eeS.eesChs = map[string]*ltcache.Cache{
utils.MetaHTTPPost: ltcache.NewCache(1,
time.Second, false, onCacheEvicted),
}
newEeS, err := NewEventExporter(cfg.EEsCfg().Exporters[0], cfg, filterS, nil)
if err != nil {
t.Error(err)
}
eeS.eesChs[utils.MetaHTTPPost].Set("SQLExporterFull", newEeS, []string{"grp1"})
cgrEv := &engine.CGREventWithEeIDs{
EeIDs: []string{"SQLExporterFull"},
CGREvent: &utils.CGREvent{
Tenant: "cgrates.org",
ID: "voiceEvent",
Time: utils.TimePointer(time.Now()),
Event: map[string]any{},
APIOpts: map[string]any{
utils.OptsEEsVerbose: struct{}{},
},
},
}
var rply map[string]map[string]any
errExpect := "PARTIALLY_EXECUTED"
if err := eeS.V1ProcessEvent(context.Background(), cgrEv, &rply); err == nil || err.Error() != errExpect {
t.Errorf("Expecting %q but received %q", errExpect, err)
} else if len(rply) != 0 {
t.Error("Unexpected reply result")
}
}
func newMockEventExporter() *mockEventExporter {
return &mockEventExporter{dc: &utils.SafeMapStorage{
MapStorage: utils.MapStorage{
utils.NumberOfEvents: int64(0),
utils.PositiveExports: utils.StringSet{},
utils.NegativeExports: 5,
}}}
}
type mockEventExporter struct {
dc *utils.SafeMapStorage
bytePreparing
}
func (m mockEventExporter) GetMetrics() *utils.SafeMapStorage {
return m.dc
}
func (mockEventExporter) Cfg() *config.EventExporterCfg { return new(config.EventExporterCfg) }
func (mockEventExporter) Connect() error { return nil }
func (mockEventExporter) ExportEvent(any, string) error { return nil }
func (mockEventExporter) Close() error {
utils.Logger.Warning("NOT IMPLEMENTED")
return nil
}
func TestV1ProcessEventMockMetrics(t *testing.T) {
mEe := newMockEventExporter()
cfg := config.NewDefaultCGRConfig()
cfg.EEsCfg().Exporters[0].Type = utils.MetaHTTPPost
cfg.EEsCfg().Exporters[0].ID = "SQLExporterFull"
cfg.EEsCfg().Exporters[0].Synchronous = true
newIDb := engine.NewInternalDB(nil, nil, true, cfg.DataDbCfg().Items)
newDM := engine.NewDataManager(newIDb, cfg.CacheCfg(), nil)
filterS := engine.NewFilterS(cfg, nil, newDM)
eeS := NewEventExporterS(cfg, filterS, nil)
eeS.eesChs = map[string]*ltcache.Cache{
utils.MetaHTTPPost: ltcache.NewCache(1,
time.Second, false, onCacheEvicted),
}
eeS.eesChs[utils.MetaHTTPPost].Set("SQLExporterFull", mEe, []string{"grp1"})
cgrEv := &engine.CGREventWithEeIDs{
EeIDs: []string{"SQLExporterFull"},
CGREvent: &utils.CGREvent{
Tenant: "cgrates.org",
ID: "voiceEvent",
Time: utils.TimePointer(time.Now()),
Event: map[string]any{},
APIOpts: map[string]any{
utils.OptsEEsVerbose: struct{}{},
},
},
}
var rply map[string]map[string]any
errExpect := "cannot cast to map[string]any 5 for positive exports"
if err := eeS.V1ProcessEvent(context.Background(), cgrEv, &rply); err == nil || err.Error() != errExpect {
t.Errorf("Expecting %q but received %q", errExpect, err)
}
}
func TestV1ProcessEvent5(t *testing.T) {
cfg := config.NewDefaultCGRConfig()
cfg.EEsCfg().Exporters = []*config.EventExporterCfg{
{
Type: utils.MetaNone,
},
{
ID: "SQLExporterFull",
Type: "invalid_type",
},
}
cgrEv := &engine.CGREventWithEeIDs{
EeIDs: []string{"SQLExporterFull"},
CGREvent: &utils.CGREvent{
Tenant: "cgrates.org",
ID: "voiceEvent",
Time: utils.TimePointer(time.Now()),
Event: map[string]any{},
APIOpts: map[string]any{
utils.OptsEEsVerbose: struct{}{},
},
},
}
newIDb := engine.NewInternalDB(nil, nil, true, cfg.DataDbCfg().Items)
newDM := engine.NewDataManager(newIDb, cfg.CacheCfg(), nil)
filterS := engine.NewFilterS(cfg, nil, newDM)
eeS := NewEventExporterS(cfg, filterS, nil)
var rply map[string]map[string]any
errExpect := "unsupported exporter type: <invalid_type>"
if err := eeS.V1ProcessEvent(context.Background(), cgrEv, &rply); err == nil || err.Error() != errExpect {
t.Errorf("Expected %v but received %v", errExpect, err)
}
}
func TestV1ProcessEvent6(t *testing.T) {
cfg := config.NewDefaultCGRConfig()
cfg.EEsCfg().Exporters[0].Type = utils.MetaHTTPPost
cfg.EEsCfg().Exporters[0].ID = "SQLExporterFull"
newIDb := engine.NewInternalDB(nil, nil, true, cfg.DataDbCfg().Items)
newDM := engine.NewDataManager(newIDb, cfg.CacheCfg(), nil)
filterS := engine.NewFilterS(cfg, nil, newDM)
eeS := NewEventExporterS(cfg, filterS, nil)
cgrEv := &engine.CGREventWithEeIDs{
EeIDs: []string{"SQLExporterFull"},
CGREvent: &utils.CGREvent{
Tenant: "cgrates.org",
ID: "voiceEvent",
Time: utils.TimePointer(time.Now()),
Event: map[string]any{},
APIOpts: map[string]any{
utils.OptsEEsVerbose: struct{}{},
},
},
}
var rply map[string]map[string]any
if err := eeS.V1ProcessEvent(context.Background(), cgrEv, &rply); err != nil {
t.Error(err)
}
}
func TestOnCacheEvicted(t *testing.T) {
var err error
utils.Logger, err = utils.Newlogger(utils.MetaStdLog, utils.EmptyString)
if err != nil {
t.Error(err)
}
utils.Logger.SetLogLevel(7)
bufLog := new(bytes.Buffer)
log.SetOutput(bufLog)
ee := newMockEventExporter()
onCacheEvicted(utils.EmptyString, ee)
rcvExpect := "CGRateS <> [WARNING] NOT IMPLEMENTED"
if rcv := bufLog.String(); !strings.Contains(rcv, rcvExpect) {
t.Errorf("Expected %v but received %v", rcvExpect, rcv)
}
bufLog.Reset()
}
func TestShutdown(t *testing.T) {
cfg := config.NewDefaultCGRConfig()
newIDb := engine.NewInternalDB(nil, nil, true, cfg.DataDbCfg().Items)
newDM := engine.NewDataManager(newIDb, cfg.CacheCfg(), nil)
filterS := engine.NewFilterS(cfg, nil, newDM)
eeS := NewEventExporterS(cfg, filterS, nil)
logBuf := new(bytes.Buffer)
log.SetOutput(logBuf)
eeS.Shutdown()
logExpect := "[INFO] <CoreS> shutdown <EEs>"
if rcv := logBuf.String(); !strings.Contains(rcv, logExpect) {
t.Errorf("Expected %q but received %q", logExpect, rcv)
}
logBuf.Reset()
}
func TestUpdateEEMetrics(t *testing.T) {
dc, _ := newEEMetrics(utils.EmptyString)
tnow := time.Now()
ev := engine.MapEvent{
utils.AnswerTime: tnow,
utils.OrderID: 1,
utils.Cost: 5.5,
utils.ToR: utils.MetaVoice,
utils.Usage: time.Second,
}
exp, _ := newEEMetrics(utils.EmptyString)
exp.MapStorage[utils.FirstEventATime] = tnow
exp.MapStorage[utils.LastEventATime] = tnow
exp.MapStorage[utils.FirstExpOrderID] = int64(1)
exp.MapStorage[utils.LastExpOrderID] = int64(1)
exp.MapStorage[utils.TotalCost] = float64(5.5)
exp.MapStorage[utils.TotalDuration] = time.Second
exp.MapStorage[utils.TimeNow] = dc.MapStorage[utils.TimeNow]
exp.MapStorage[utils.PositiveExports] = utils.StringSet{"": {}}
if updateEEMetrics(dc, "", ev, false, utils.EmptyString); !reflect.DeepEqual(dc, exp) {
t.Errorf("Expected: %s,received: %s", utils.ToJSON(exp), utils.ToJSON(dc))
}
tnow = tnow.Add(24 * time.Hour)
ev = engine.MapEvent{
utils.AnswerTime: tnow,
utils.OrderID: 2,
utils.Cost: 5.5,
utils.ToR: utils.MetaSMS,
utils.Usage: time.Second,
}
exp.MapStorage[utils.LastEventATime] = tnow
exp.MapStorage[utils.LastExpOrderID] = int64(2)
exp.MapStorage[utils.TotalCost] = float64(11)
exp.MapStorage[utils.TotalSMSUsage] = time.Second
if updateEEMetrics(dc, "", ev, false, utils.EmptyString); !reflect.DeepEqual(dc, exp) {
t.Errorf("Expected: %s,received: %s", utils.ToJSON(exp), utils.ToJSON(dc))
}
tnow = tnow.Add(24 * time.Hour)
ev = engine.MapEvent{
utils.AnswerTime: tnow,
utils.OrderID: 3,
utils.Cost: 5.5,
utils.ToR: utils.MetaMMS,
utils.Usage: time.Second,
}
exp.MapStorage[utils.LastEventATime] = tnow
exp.MapStorage[utils.LastExpOrderID] = int64(3)
exp.MapStorage[utils.TotalCost] = float64(16.5)
exp.MapStorage[utils.TotalMMSUsage] = time.Second
if updateEEMetrics(dc, "", ev, false, utils.EmptyString); !reflect.DeepEqual(dc, exp) {
t.Errorf("Expected: %s,received: %s", utils.ToJSON(exp), utils.ToJSON(dc))
}
tnow = tnow.Add(24 * time.Hour)
ev = engine.MapEvent{
utils.AnswerTime: tnow,
utils.OrderID: 4,
utils.Cost: 5.5,
utils.ToR: utils.MetaGeneric,
utils.Usage: time.Second,
}
exp.MapStorage[utils.LastEventATime] = tnow
exp.MapStorage[utils.LastExpOrderID] = int64(4)
exp.MapStorage[utils.TotalCost] = float64(22)
exp.MapStorage[utils.TotalGenericUsage] = time.Second
if updateEEMetrics(dc, "", ev, false, utils.EmptyString); !reflect.DeepEqual(dc, exp) {
t.Errorf("Expected: %s,received: %s", utils.ToJSON(exp), utils.ToJSON(dc))
}
tnow = tnow.Add(24 * time.Hour)
ev = engine.MapEvent{
utils.AnswerTime: tnow,
utils.OrderID: 5,
utils.Cost: 5.5,
utils.ToR: utils.MetaData,
utils.Usage: time.Second,
}
exp.MapStorage[utils.LastEventATime] = tnow
exp.MapStorage[utils.LastExpOrderID] = int64(5)
exp.MapStorage[utils.TotalCost] = float64(27.5)
exp.MapStorage[utils.TotalDataUsage] = time.Second
if updateEEMetrics(dc, "", ev, false, utils.EmptyString); !reflect.DeepEqual(dc, exp) {
t.Errorf("Expected: %s,received: %s", utils.ToJSON(exp), utils.ToJSON(dc))
}
}