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507 lines
20 KiB
Go
507 lines
20 KiB
Go
/*
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Real-time Online/Offline Charging System (OCS) for Telecom & ISP environments
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Copyright (C) ITsysCOM GmbH
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>
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*/
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package agents
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import (
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"errors"
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"fmt"
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"strings"
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"time"
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"github.com/cgrates/birpc"
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"github.com/cgrates/birpc/context"
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"github.com/cgrates/cgrates/config"
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"github.com/cgrates/cgrates/engine"
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"github.com/cgrates/cgrates/sessions"
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"github.com/cgrates/cgrates/utils"
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"github.com/cgrates/fsock"
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)
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func NewFSsessions(fsAgentConfig *config.FsAgentCfg,
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timezone string, connMgr *engine.ConnManager) (*FSsessions, error) {
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fsa := &FSsessions{
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cfg: fsAgentConfig,
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conns: make([]*fsock.FSock, len(fsAgentConfig.EventSocketConns)),
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senderPools: make([]*fsock.FSockPool, len(fsAgentConfig.EventSocketConns)),
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timezone: timezone,
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connMgr: connMgr,
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}
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srv, err := birpc.NewServiceWithMethodsRename(fsa, utils.AgentV1, true, func(oldFn string) (newFn string) {
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return strings.TrimPrefix(oldFn, "V1")
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})
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if err != nil {
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return nil, err
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}
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fsa.ctx = context.WithClient(context.TODO(), srv)
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return fsa, nil
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}
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// FSsessions is the freeswitch session manager
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// it holds a buffer for the network connection
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// and the active sessions
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type FSsessions struct {
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cfg *config.FsAgentCfg
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conns []*fsock.FSock // Keep the list here for connection management purposes
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senderPools []*fsock.FSockPool // Keep sender pools here
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timezone string
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connMgr *engine.ConnManager
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ctx *context.Context
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}
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func (fsa *FSsessions) createHandlers() map[string][]func(string, int) {
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ca := func(body string, connIdx int) {
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fsa.onChannelAnswer(
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NewFSEvent(body), connIdx)
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}
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ch := func(body string, connIdx int) {
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fsa.onChannelHangupComplete(
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NewFSEvent(body), connIdx)
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}
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handlers := map[string][]func(string, int){
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"CHANNEL_ANSWER": {ca},
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"CHANNEL_HANGUP_COMPLETE": {ch},
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}
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if fsa.cfg.SubscribePark {
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cp := func(body string, connIdx int) {
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fsa.onChannelPark(
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NewFSEvent(body), connIdx)
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}
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handlers["CHANNEL_PARK"] = []func(string, int){cp}
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}
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return handlers
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}
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// Sets the call timeout valid of starting of the call
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func (fsa *FSsessions) setMaxCallDuration(uuid string, connIdx int,
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maxDur time.Duration, destNr string) (err error) {
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// set variable_cgr_max_usage to the fs channel
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if _, err = fsa.conns[connIdx].SendApiCmd(
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fmt.Sprintf("uuid_setvar %s %s %d \n\n",
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uuid, VarCGRMaxUsage, int(maxDur.Seconds()))); err != nil {
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utils.Logger.Err(
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fmt.Sprintf("<%s> Could not set %s variable to freeswitch channel, error: <%s>, connIdx: %v",
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utils.FreeSWITCHAgent, VarCGRMaxUsage, err.Error(), connIdx))
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return
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}
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if len(fsa.cfg.EmptyBalanceContext) != 0 {
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_, err = fsa.conns[connIdx].SendApiCmd(
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fmt.Sprintf("uuid_setvar %s execute_on_answer sched_transfer +%d %s XML %s\n\n",
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uuid, int(maxDur.Seconds()), destNr, fsa.cfg.EmptyBalanceContext))
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if err != nil {
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utils.Logger.Err(
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fmt.Sprintf("<%s> Could not transfer the call to empty balance context, error: <%s>, connIdx: %v",
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utils.FreeSWITCHAgent, err.Error(), connIdx))
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}
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return
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}
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if len(fsa.cfg.EmptyBalanceAnnFile) != 0 {
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if _, err = fsa.conns[connIdx].SendApiCmd(
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fmt.Sprintf("sched_broadcast +%d %s playback!manager_request::%s aleg\n\n",
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int(maxDur.Seconds()), uuid, fsa.cfg.EmptyBalanceAnnFile)); err != nil {
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utils.Logger.Err(
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fmt.Sprintf("<%s> Could not send uuid_broadcast to freeswitch, error: <%s>, connIdx: %v",
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utils.FreeSWITCHAgent, err.Error(), connIdx))
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}
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return
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}
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if _, err = fsa.conns[connIdx].SendApiCmd(
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fmt.Sprintf("uuid_setvar %s execute_on_answer sched_hangup +%d alloted_timeout\n\n",
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uuid, int(maxDur.Seconds()))); err != nil {
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utils.Logger.Err(
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fmt.Sprintf("<%s> Could not send sched_hangup command to freeswitch, error: <%s>, connIdx: %v",
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utils.FreeSWITCHAgent, err.Error(), connIdx))
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}
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return
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}
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// Sends the transfer command to unpark the call to freeswitch
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func (fsa *FSsessions) unparkCall(uuid string, connIdx int, callDestNb, notify string) (err error) {
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_, err = fsa.conns[connIdx].SendApiCmd(
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fmt.Sprintf("uuid_setvar %s cgr_notify %s\n\n", uuid, notify))
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if err != nil {
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utils.Logger.Err(
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fmt.Sprintf("<%s> Could not send unpark api notification to freeswitch, error: <%s>, connIdx: %v",
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utils.FreeSWITCHAgent, err.Error(), connIdx))
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return
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}
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if _, err = fsa.conns[connIdx].SendApiCmd(
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fmt.Sprintf("uuid_transfer %s %s\n\n", uuid, callDestNb)); err != nil {
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utils.Logger.Err(
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fmt.Sprintf("<%s> Could not send unpark api call to freeswitch, error: <%s>, connIdx: %v",
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utils.FreeSWITCHAgent, err.Error(), connIdx))
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}
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return
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}
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func (fsa *FSsessions) onChannelPark(fsev FSEvent, connIdx int) {
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if fsev.GetReqType(utils.MetaDefault) == utils.MetaNone { // Not for us
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return
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}
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if connIdx >= len(fsa.conns) { // protection against index out of range panic
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err := fmt.Errorf("Index out of range[0,%v): %v ", len(fsa.conns), connIdx)
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utils.Logger.Err(fmt.Sprintf("<%s> %s", utils.FreeSWITCHAgent, err.Error()))
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return
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}
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fsev[VarCGROriginHost] = utils.FirstNonEmpty(fsev[VarCGROriginHost], fsa.cfg.EventSocketConns[connIdx].Alias) // rewrite the OriginHost variable if it is empty
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authArgs := fsev.V1AuthorizeArgs()
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authArgs.CGREvent.Event[FsConnID] = connIdx // Attach the connection ID
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var authReply sessions.V1AuthorizeReply
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if err := fsa.connMgr.Call(fsa.ctx, fsa.cfg.SessionSConns,
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utils.SessionSv1AuthorizeEvent,
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authArgs, &authReply); err != nil {
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utils.Logger.Err(
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fmt.Sprintf("<%s> Could not authorize event %s, error: %s",
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utils.FreeSWITCHAgent, fsev.GetUUID(), err.Error()))
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fsa.unparkCall(fsev.GetUUID(), connIdx,
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fsev.GetCallDestNr(utils.MetaDefault), err.Error())
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return
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}
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if authReply.Attributes != nil {
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for _, fldName := range authReply.Attributes.AlteredFields {
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fldName = strings.TrimPrefix(fldName, utils.MetaReq+utils.NestingSep)
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if _, has := authReply.Attributes.CGREvent.Event[fldName]; !has {
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continue //maybe removed
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}
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if _, err := fsa.conns[connIdx].SendApiCmd(
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fmt.Sprintf("uuid_setvar %s %s %s\n\n", fsev.GetUUID(), fldName,
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authReply.Attributes.CGREvent.Event[fldName])); err != nil {
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utils.Logger.Info(
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fmt.Sprintf("<%s> error %s setting channel variabile: %s",
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utils.FreeSWITCHAgent, err.Error(), fldName))
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fsa.unparkCall(fsev.GetUUID(), connIdx,
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fsev.GetCallDestNr(utils.MetaDefault), err.Error())
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return
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}
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}
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}
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if authArgs.GetMaxUsage {
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if authReply.MaxUsage == nil || *authReply.MaxUsage == 0 {
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fsa.unparkCall(fsev.GetUUID(), connIdx,
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fsev.GetCallDestNr(utils.MetaDefault), utils.ErrInsufficientCredit.Error())
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return
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}
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fsa.setMaxCallDuration(fsev.GetUUID(), connIdx,
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*authReply.MaxUsage, fsev.GetCallDestNr(utils.MetaDefault))
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}
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if authReply.ResourceAllocation != nil {
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if _, err := fsa.conns[connIdx].SendApiCmd(fmt.Sprintf("uuid_setvar %s %s %s\n\n",
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fsev.GetUUID(), CGRResourceAllocation, *authReply.ResourceAllocation)); err != nil {
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utils.Logger.Info(
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fmt.Sprintf("<%s> error %s setting channel variabile: %s",
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utils.FreeSWITCHAgent, err.Error(), CGRResourceAllocation))
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fsa.unparkCall(fsev.GetUUID(), connIdx,
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fsev.GetCallDestNr(utils.MetaDefault), err.Error())
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return
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}
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}
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if authReply.RouteProfiles != nil {
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fsArray := SliceAsFsArray(authReply.RouteProfiles.RoutesWithParams(
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config.CgrConfig().FsAgentCfg().RouteProfile))
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if _, err := fsa.conns[connIdx].SendApiCmd(fmt.Sprintf("uuid_setvar %s %s %s\n\n",
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fsev.GetUUID(), utils.CGRRoutes, fsArray)); err != nil {
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utils.Logger.Info(fmt.Sprintf("<%s> error setting routes: %s",
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utils.FreeSWITCHAgent, err.Error()))
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fsa.unparkCall(fsev.GetUUID(), connIdx, fsev.GetCallDestNr(utils.MetaDefault), err.Error())
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return
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}
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}
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fsa.unparkCall(fsev.GetUUID(), connIdx,
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fsev.GetCallDestNr(utils.MetaDefault), AUTH_OK)
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}
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func (fsa *FSsessions) onChannelAnswer(fsev FSEvent, connIdx int) {
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if fsev.GetReqType(utils.MetaDefault) == utils.MetaNone { // Do not process this request
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return
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}
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if connIdx >= len(fsa.conns) { // protection against index out of range panic
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err := fmt.Errorf("Index out of range[0,%v): %v ", len(fsa.conns), connIdx)
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utils.Logger.Err(fmt.Sprintf("<%s> %s", utils.FreeSWITCHAgent, err.Error()))
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return
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}
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_, err := fsa.conns[connIdx].SendApiCmd(
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fmt.Sprintf("uuid_setvar %s %s %s\n\n", fsev.GetUUID(),
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utils.CGROriginHost, utils.FirstNonEmpty(fsa.cfg.EventSocketConns[connIdx].Alias,
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fsa.cfg.EventSocketConns[connIdx].Address)))
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if err != nil {
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utils.Logger.Err(
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fmt.Sprintf("<%s> error %s setting channel variabile: %s",
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utils.FreeSWITCHAgent, err.Error(), VarCGROriginHost))
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return
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}
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fsev[VarCGROriginHost] = utils.FirstNonEmpty(fsev[VarCGROriginHost], fsa.cfg.EventSocketConns[connIdx].Alias) // rewrite the OriginHost variable if it is empty
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chanUUID := fsev.GetUUID()
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if missing := fsev.MissingParameter(fsa.timezone); missing != "" {
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fsa.disconnectSession(connIdx, chanUUID, "",
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utils.NewErrMandatoryIeMissing(missing).Error())
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return
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}
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initSessionArgs := fsev.V1InitSessionArgs()
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initSessionArgs.CGREvent.Event[FsConnID] = connIdx // Attach the connection ID so we can properly disconnect later
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var initReply sessions.V1InitSessionReply
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if err := fsa.connMgr.Call(fsa.ctx, fsa.cfg.SessionSConns,
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utils.SessionSv1InitiateSession,
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initSessionArgs, &initReply); err != nil {
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utils.Logger.Err(
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fmt.Sprintf("<%s> could not process answer for event %s, error: %s",
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utils.FreeSWITCHAgent, chanUUID, err.Error()))
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fsa.disconnectSession(connIdx, chanUUID, "", err.Error())
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return
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}
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}
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func (fsa *FSsessions) onChannelHangupComplete(fsev FSEvent, connIdx int) {
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if fsev.GetReqType(utils.MetaDefault) == utils.MetaNone { // Do not process this request
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return
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}
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if connIdx >= len(fsa.conns) { // protection against index out of range panic
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err := fmt.Errorf("Index out of range[0,%v): %v ", len(fsa.conns), connIdx)
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utils.Logger.Err(fmt.Sprintf("<%s> %s", utils.FreeSWITCHAgent, err.Error()))
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return
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}
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var reply string
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fsev[VarCGROriginHost] = utils.FirstNonEmpty(fsev[VarCGROriginHost], fsa.cfg.EventSocketConns[connIdx].Alias) // rewrite the OriginHost variable if it is empty
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if fsev[VarAnswerEpoch] != "0" { // call was answered
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terminateSessionArgs := fsev.V1TerminateSessionArgs()
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terminateSessionArgs.CGREvent.Event[FsConnID] = connIdx // Attach the connection ID in case we need to create a session and disconnect it
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if err := fsa.connMgr.Call(fsa.ctx, fsa.cfg.SessionSConns,
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utils.SessionSv1TerminateSession,
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terminateSessionArgs, &reply); err != nil {
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utils.Logger.Err(
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fmt.Sprintf("<%s> Could not terminate session with event %s, error: %s",
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utils.FreeSWITCHAgent, fsev.GetUUID(), err.Error()))
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}
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}
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if fsa.cfg.CreateCDR {
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cgrEv, err := fsev.AsCGREvent(fsa.timezone)
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if err != nil {
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return
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}
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if err := fsa.connMgr.Call(fsa.ctx, fsa.cfg.SessionSConns,
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utils.SessionSv1ProcessCDR,
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cgrEv, &reply); err != nil {
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utils.Logger.Err(fmt.Sprintf("<%s> Failed processing CGREvent: %s, error: <%s>",
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utils.FreeSWITCHAgent, utils.ToJSON(cgrEv), err.Error()))
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}
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}
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}
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// Connect connects to the freeswitch mod_event_socket server and starts
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// listening for events.
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func (fsa *FSsessions) Connect() error {
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eventFilters := map[string][]string{"Call-Direction": {"inbound"}}
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connErr := make(chan error)
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var reply string
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// make a call fs -> sessions_conns to create an active client needed for syncSessions when restoring sessions, since prior clients are lost when engine shuts down
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if err := fsa.connMgr.Call(fsa.ctx, fsa.cfg.SessionSConns, utils.SessionSv1Ping, &utils.CGREvent{}, &reply); err != nil {
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return err
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}
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for connIdx, connCfg := range fsa.cfg.EventSocketConns {
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fSock, err := fsock.NewFSock(
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connCfg.Address, connCfg.Password,
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connCfg.Reconnects, connCfg.MaxReconnectInterval,
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connCfg.ReplyTimeout, utils.FibDuration,
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fsa.createHandlers(), eventFilters,
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utils.Logger, connIdx, true, connErr)
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if err != nil {
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return err
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}
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if !fSock.Connected() {
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return errors.New("Could not connect to FreeSWITCH")
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}
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fsa.conns[connIdx] = fSock
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utils.Logger.Info(fmt.Sprintf("<%s> successfully connected to FreeSWITCH at: <%s>", utils.FreeSWITCHAgent, connCfg.Address))
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fsSenderPool := fsock.NewFSockPool(5, connCfg.Address, connCfg.Password, 1, fsa.cfg.MaxWaitConnection,
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0, connCfg.ReplyTimeout, utils.FibDuration,
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make(map[string][]func(string, int)), make(map[string][]string),
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utils.Logger, connIdx, true, nil)
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if fsSenderPool == nil {
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return errors.New("Cannot connect FreeSWITCH senders pool")
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}
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fsa.senderPools[connIdx] = fsSenderPool
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}
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err := <-connErr // Will keep the Connect locked until the first error in one of the connections
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return err
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}
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// fsev.GetCallDestNr(utils.MetaDefault)
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// Disconnects a session by sending hangup command to freeswitch
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func (fsa *FSsessions) disconnectSession(connIdx int, uuid, redirectNr, notify string) error {
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if _, err := fsa.conns[connIdx].SendApiCmd(
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fmt.Sprintf("uuid_setvar %s cgr_notify %s\n\n", uuid, notify)); err != nil {
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utils.Logger.Err(
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fmt.Sprintf("<%s> error: %s when attempting to disconnect channelID: %s over connIdx: %v",
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utils.FreeSWITCHAgent, err.Error(), uuid, connIdx))
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return err
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}
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if notify == utils.ErrInsufficientCredit.Error() {
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if len(fsa.cfg.EmptyBalanceContext) != 0 {
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if _, err := fsa.conns[connIdx].SendApiCmd(fmt.Sprintf("uuid_transfer %s %s XML %s\n\n",
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uuid, redirectNr, fsa.cfg.EmptyBalanceContext)); err != nil {
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utils.Logger.Err(fmt.Sprintf("<%s> Could not transfer the call to empty balance context, error: <%s>, connIdx: %v",
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utils.FreeSWITCHAgent, err.Error(), connIdx))
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return err
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}
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return nil
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}
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if len(fsa.cfg.EmptyBalanceAnnFile) != 0 {
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if _, err := fsa.conns[connIdx].SendApiCmd(fmt.Sprintf("uuid_broadcast %s playback!manager_request::%s aleg\n\n",
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uuid, fsa.cfg.EmptyBalanceAnnFile)); err != nil {
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utils.Logger.Err(fmt.Sprintf("<%s> Could not send uuid_broadcast to freeswitch, error: <%s>, connIdx: %v",
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utils.FreeSWITCHAgent, err.Error(), connIdx))
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return err
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}
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return nil
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}
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}
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if err := fsa.conns[connIdx].SendMsgCmd(uuid,
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map[string]string{"call-command": "hangup", "hangup-cause": "MANAGER_REQUEST"}); err != nil {
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utils.Logger.Err(
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fmt.Sprintf("<%s> Could not send disconnect msg to freeswitch, error: <%s>, connIdx: %v",
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utils.FreeSWITCHAgent, err.Error(), connIdx))
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return err
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}
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return nil
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}
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// Shutdown stops all connected fsock connections
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func (fsa *FSsessions) Shutdown() (err error) {
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for connIdx, fSock := range fsa.conns {
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if fSock == nil ||
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!fSock.Connected() {
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utils.Logger.Err(fmt.Sprintf("<%s> Cannot shutdown sessions, fsock not connected for connection index: %v", utils.FreeSWITCHAgent, connIdx))
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continue
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}
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if err = fSock.Disconnect(); err != nil {
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utils.Logger.Err(fmt.Sprintf("<%s> Error on disconnect: %s, connection index: %v", utils.FreeSWITCHAgent, err.Error(), connIdx))
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}
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}
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return
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}
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|
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// V1DisconnectSession internal method to disconnect session in FreeSWITCH
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func (fsa *FSsessions) V1DisconnectSession(ctx *context.Context, cgrEv utils.CGREvent, reply *string) (err error) {
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ev := engine.NewMapEvent(cgrEv.Event)
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channelID := ev.GetStringIgnoreErrors(utils.OriginID)
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disconnectCause := ev.GetStringIgnoreErrors(utils.DisconnectCause)
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|
connIdx, err := ev.GetTInt64(FsConnID)
|
|
if err != nil {
|
|
utils.Logger.Err(
|
|
fmt.Sprintf("<%s> error: <%s:%s> when attempting to disconnect channelID: <%s>",
|
|
utils.FreeSWITCHAgent, err.Error(), FsConnID, channelID))
|
|
return
|
|
}
|
|
if int(connIdx) >= len(fsa.conns) { // protection against index out of range panic
|
|
err := fmt.Errorf("Index out of range[0,%v): %v ", len(fsa.conns), connIdx)
|
|
utils.Logger.Err(fmt.Sprintf("<%s> %s", utils.FreeSWITCHAgent, err.Error()))
|
|
return err
|
|
}
|
|
if err = fsa.disconnectSession(int(connIdx), channelID,
|
|
utils.FirstNonEmpty(ev.GetStringIgnoreErrors(CALL_DEST_NR), ev.GetStringIgnoreErrors(SIP_REQ_USER)),
|
|
disconnectCause); err != nil {
|
|
return
|
|
}
|
|
*reply = utils.OK
|
|
return
|
|
}
|
|
|
|
// V1GetActiveSessionIDs used to return all active sessions
|
|
func (fsa *FSsessions) V1GetActiveSessionIDs(ctx *context.Context, _ string,
|
|
sessionIDs *[]*sessions.SessionID) (err error) {
|
|
var sIDs []*sessions.SessionID
|
|
for connIdx, senderPool := range fsa.senderPools {
|
|
fsConn, err := senderPool.PopFSock()
|
|
if err != nil {
|
|
utils.Logger.Err(fmt.Sprintf("<%s> Error on pop FSock: %s, connection index: %v",
|
|
utils.FreeSWITCHAgent, err.Error(), connIdx))
|
|
continue
|
|
}
|
|
apiCmd := "show channels"
|
|
if fsa.cfg.ActiveSessionDelimiter != "," { // ',' delimiter is used by default
|
|
apiCmd += " as delim " + fsa.cfg.ActiveSessionDelimiter
|
|
}
|
|
activeChanStr, err := fsConn.SendApiCmd(apiCmd)
|
|
senderPool.PushFSock(fsConn)
|
|
if err != nil {
|
|
utils.Logger.Err(
|
|
fmt.Sprintf("<%s> Error on push FSock: %v, connection index: %v",
|
|
utils.FreeSWITCHAgent, err, connIdx))
|
|
continue
|
|
}
|
|
for _, fsAChan := range fsock.MapChanData(activeChanStr, fsa.cfg.ActiveSessionDelimiter) {
|
|
sIDs = append(sIDs, &sessions.SessionID{
|
|
OriginHost: fsa.cfg.EventSocketConns[connIdx].Alias,
|
|
OriginID: fsAChan["uuid"],
|
|
})
|
|
}
|
|
}
|
|
if len(sIDs) == 0 {
|
|
return utils.ErrNoActiveSession
|
|
}
|
|
*sessionIDs = sIDs
|
|
return
|
|
}
|
|
|
|
// Reload recreates the connection buffers
|
|
// only used on reload
|
|
func (fsa *FSsessions) Reload() {
|
|
fsa.conns = make([]*fsock.FSock, len(fsa.cfg.EventSocketConns))
|
|
fsa.senderPools = make([]*fsock.FSockPool, len(fsa.cfg.EventSocketConns))
|
|
}
|
|
|
|
// V1WarnDisconnect is called when call goes under the minimum duration threshold, so FreeSWITCH can play an announcement message
|
|
func (fsa *FSsessions) V1WarnDisconnect(ctx *context.Context, args map[string]any, reply *string) (err error) {
|
|
if fsa.cfg.LowBalanceAnnFile == utils.EmptyString {
|
|
*reply = utils.OK
|
|
return
|
|
}
|
|
ev := engine.NewMapEvent(args)
|
|
channelID := ev.GetStringIgnoreErrors(utils.OriginID)
|
|
var connIdx int64
|
|
if connIdx, err = ev.GetTInt64(FsConnID); err != nil {
|
|
utils.Logger.Err(
|
|
fmt.Sprintf("<%s> error: <%s:%s> when attempting to disconnect channelID: <%s>",
|
|
utils.FreeSWITCHAgent, err.Error(), FsConnID, channelID))
|
|
return
|
|
}
|
|
if int(connIdx) >= len(fsa.conns) { // protection against index out of range panic
|
|
err = fmt.Errorf("Index out of range[0,%v): %v ", len(fsa.conns), connIdx)
|
|
utils.Logger.Err(fmt.Sprintf("<%s> %s", utils.FreeSWITCHAgent, err.Error()))
|
|
return
|
|
}
|
|
if _, err = fsa.conns[connIdx].SendApiCmd(fmt.Sprintf("uuid_broadcast %s playback!manager_request::%s aleg\n\n", channelID, fsa.cfg.LowBalanceAnnFile)); err != nil {
|
|
utils.Logger.Err(fmt.Sprintf("<%s> Could not send uuid_broadcast to freeswitch, error: %s, connection id: %v",
|
|
utils.FreeSWITCHAgent, err.Error(), connIdx))
|
|
return
|
|
}
|
|
*reply = utils.OK
|
|
return
|
|
}
|
|
|
|
// V1AlterSession is used to implement the sessions.BiRPClient interface
|
|
func (*FSsessions) V1AlterSession(*context.Context, utils.CGREvent, *string) error {
|
|
return utils.ErrNotImplemented
|
|
}
|
|
|
|
// V1DisconnectPeer is used to implement the sessions.BiRPClient interface
|
|
func (*FSsessions) V1DisconnectPeer(*context.Context, *utils.DPRArgs, *string) error {
|
|
return utils.ErrNotImplemented
|
|
}
|