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491 lines
18 KiB
Go
491 lines
18 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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"fmt"
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"slices"
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"strconv"
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"strings"
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"time"
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"github.com/cgrates/cgrates/config"
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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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// ToDo: Introduce support for RSRFields
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const (
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varPrefix = "variable_"
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// Freswitch event proprities names
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SUBJECT = varPrefix + utils.CGRSubject
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ACCOUNT = varPrefix + utils.CGRAccount
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DESTINATION = varPrefix + utils.CGRDestination
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REQTYPE = varPrefix + utils.CGRReqType //prepaid or postpaid
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CATEGORY = varPrefix + utils.CGRCategory
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VAR_CGR_ROUTE = varPrefix + utils.CGRRoute
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UUID = "Unique-ID" // -Unique ID for this call leg
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CSTMID = varPrefix + utils.CGRTenant
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CALL_DEST_NR = "Caller-Destination-Number"
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SIP_REQ_USER = "variable_sip_req_user"
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PARK_TIME = "Caller-Profile-Created-Time"
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SETUP_TIME = "Caller-Channel-Created-Time"
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ANSWER_TIME = "Caller-Channel-Answered-Time"
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END_TIME = "Caller-Channel-Hangup-Time"
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DURATION = "variable_billsec"
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NAME = "Event-Name"
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HEARTBEAT = "HEARTBEAT"
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ANSWER = "CHANNEL_ANSWER"
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HANGUP = "CHANNEL_HANGUP_COMPLETE"
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PARK = "CHANNEL_PARK"
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AUTH_OK = "AUTH_OK"
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DISCONNECT = "SWITCH DISCONNECT"
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MANAGER_REQUEST = "MANAGER_REQUEST"
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USERNAME = "Caller-Username"
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FS_IPv4 = "FreeSWITCH-IPv4"
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HANGUP_CAUSE = "Hangup-Cause"
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PDD_MEDIA_MS = "variable_progress_mediamsec"
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PDD_NOMEDIA_MS = "variable_progressmsec"
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IGNOREPARK = "variable_cgr_ignorepark"
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FS_VARPREFIX = "variable_"
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VarCGRFlags = varPrefix + utils.CGRFlags
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VarCGROpts = varPrefix + utils.CGROpts
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CGRResourceAllocation = "cgr_resource_allocation"
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VAR_CGR_DISCONNECT_CAUSE = varPrefix + utils.CGRDisconnectCause
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VAR_CGR_CMPUTELCR = varPrefix + utils.CGRComputeLCR
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FsConnID = "FsConnID" // used to share connID info in event for remote disconnects
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VarAnswerEpoch = "variable_answer_epoch"
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VarCGRACD = varPrefix + utils.CgrAcd
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VarCGROriginHost = varPrefix + utils.CGROriginHost
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VarCGRMaxUsage = "cgr_max_usage"
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)
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func NewFSEvent(strEv string) (fsev FSEvent) {
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return fsock.FSEventStrToMap(strEv, nil)
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}
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// Event type holding a mapping of all event's proprieties
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type FSEvent map[string]string
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// Nice printing for the event object.
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func (fsev FSEvent) String() (result string) {
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for k, v := range fsev {
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result += fmt.Sprintf("%s = %s\n", k, v)
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}
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result += "=============================================================="
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return
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}
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func (fsev FSEvent) GetName() string {
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return fsev[NAME]
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}
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// Account calling
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func (fsev FSEvent) GetAccount(fieldName string) string {
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if strings.HasPrefix(fieldName, utils.StaticValuePrefix) { // Static value
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return fieldName[len(utils.StaticValuePrefix):]
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}
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return utils.FirstNonEmpty(fsev[fieldName], fsev[ACCOUNT], fsev[USERNAME])
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}
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// Rating subject being charged
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func (fsev FSEvent) GetSubject(fieldName string) string {
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if strings.HasPrefix(fieldName, utils.StaticValuePrefix) { // Static value
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return fieldName[len(utils.StaticValuePrefix):]
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}
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return utils.FirstNonEmpty(fsev[fieldName], fsev[SUBJECT], fsev.GetAccount(fieldName))
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}
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// Charging destination number
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func (fsev FSEvent) GetDestination(fieldName string) string {
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if strings.HasPrefix(fieldName, utils.StaticValuePrefix) { // Static value
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return fieldName[len(utils.StaticValuePrefix):]
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}
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return utils.FirstNonEmpty(fsev[fieldName], fsev[DESTINATION],
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fsev[CALL_DEST_NR], fsev[SIP_REQ_USER])
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}
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// Original dialed destination number, useful in case of unpark
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func (fsev FSEvent) GetCallDestNr(fieldName string) string {
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if strings.HasPrefix(fieldName, utils.StaticValuePrefix) { // Static value
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return fieldName[len(utils.StaticValuePrefix):]
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}
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return utils.FirstNonEmpty(fsev[fieldName], fsev[CALL_DEST_NR], fsev[SIP_REQ_USER])
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}
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func (fsev FSEvent) GetCategory(fieldName string) string {
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if strings.HasPrefix(fieldName, utils.StaticValuePrefix) { // Static value
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return fieldName[len(utils.StaticValuePrefix):]
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}
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return utils.FirstNonEmpty(fsev[fieldName], fsev[CATEGORY],
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config.CgrConfig().GeneralCfg().DefaultCategory)
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}
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func (fsev FSEvent) GetUUID() string {
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return fsev[UUID]
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}
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func (fsev FSEvent) GetSessionIds() []string {
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return []string{fsev.GetUUID()}
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}
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func (fsev FSEvent) GetTenant(fieldName string) string {
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if strings.HasPrefix(fieldName, utils.StaticValuePrefix) { // Static value
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return fieldName[len(utils.StaticValuePrefix):]
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}
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return utils.FirstNonEmpty(fsev[fieldName], fsev[CSTMID],
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config.CgrConfig().GeneralCfg().DefaultTenant)
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}
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func (fsev FSEvent) GetReqType(fieldName string) string {
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var reqTypeDetected = "" // Used to automatically disable processing of the request
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if fsev["variable_process_cdr"] == "false" { // FS will not generated CDR here
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reqTypeDetected = utils.MetaNone
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} else if fsev["Caller-Dialplan"] == "inline" { // Used for internally generated dialplan, eg refer coming from another box, not in our control
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reqTypeDetected = utils.MetaNone
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}
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if strings.HasPrefix(fieldName, utils.StaticValuePrefix) { // Static value
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return fieldName[len(utils.StaticValuePrefix):]
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}
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return utils.FirstNonEmpty(fsev[fieldName], fsev[REQTYPE],
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reqTypeDetected, config.CgrConfig().GeneralCfg().DefaultReqType)
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}
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func (fsev FSEvent) MissingParameter(timezone string) string {
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if strings.TrimSpace(fsev.GetAccount(utils.MetaDefault)) == "" {
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return utils.AccountField
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}
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if strings.TrimSpace(fsev.GetSubject(utils.MetaDefault)) == "" {
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return utils.Subject
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}
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if strings.TrimSpace(fsev.GetDestination(utils.MetaDefault)) == "" {
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return utils.Destination
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}
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if strings.TrimSpace(fsev.GetCategory(utils.MetaDefault)) == "" {
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return utils.Category
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}
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if strings.TrimSpace(fsev.GetUUID()) == "" {
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return utils.OriginID
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}
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if strings.TrimSpace(fsev.GetTenant(utils.MetaDefault)) == "" {
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return utils.Tenant
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}
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if strings.TrimSpace(fsev.GetCallDestNr(utils.MetaDefault)) == "" {
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return CALL_DEST_NR
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}
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return ""
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}
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func (fsev FSEvent) GetSetupTime(fieldName, timezone string) (t time.Time, err error) {
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fsSTimeStr, hasKey := fsev[SETUP_TIME]
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if hasKey && fsSTimeStr != "0" {
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// Discard the nanoseconds information since MySQL cannot store them in early versions and csv uses default seconds so CGRID will not corelate
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fsSTimeStr = fsSTimeStr[:len(fsSTimeStr)-6]
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}
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sTimeStr := utils.FirstNonEmpty(fsev[fieldName], fsSTimeStr)
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if strings.HasPrefix(fieldName, utils.StaticValuePrefix) { // Static value
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sTimeStr = fieldName[len(utils.StaticValuePrefix):]
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}
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return utils.ParseTimeDetectLayout(sTimeStr, timezone)
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}
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func (fsev FSEvent) GetAnswerTime(fieldName, timezone string) (t time.Time, err error) {
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fsATimeStr, hasKey := fsev[ANSWER_TIME]
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if hasKey && fsATimeStr != "0" {
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// Discard the nanoseconds information since MySQL cannot store them in early versions and csv uses default seconds so CGRID will not corelate
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fsATimeStr = fsATimeStr[:len(fsATimeStr)-6]
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}
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aTimeStr := utils.FirstNonEmpty(fsev[fieldName], fsATimeStr)
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if strings.HasPrefix(fieldName, utils.StaticValuePrefix) { // Static value
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aTimeStr = fieldName[len(utils.StaticValuePrefix):]
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}
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return utils.ParseTimeDetectLayout(aTimeStr, timezone)
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}
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func (fsev FSEvent) GetEndTime(fieldName, timezone string) (t time.Time, err error) {
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return utils.ParseTimeDetectLayout(fsev[END_TIME], timezone)
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}
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func (fsev FSEvent) GetDuration(fieldName string) (time.Duration, error) {
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durStr := utils.FirstNonEmpty(fsev[fieldName], fsev[DURATION])
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if strings.HasPrefix(fieldName, utils.StaticValuePrefix) { // Static value
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durStr = fieldName[len(utils.StaticValuePrefix):]
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}
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return utils.ParseDurationWithSecs(durStr)
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}
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func (fsev FSEvent) GetPdd(fieldName string) (time.Duration, error) {
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var PDDStr string
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if slices.Contains([]string{utils.MetaDefault, utils.PDD}, fieldName) {
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PDDStr = utils.FirstNonEmpty(fsev[PDD_MEDIA_MS], fsev[PDD_NOMEDIA_MS])
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if len(PDDStr) != 0 {
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PDDStr = PDDStr + "ms" // PDD is in milliseconds and CGR expects it in seconds
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}
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} else if strings.HasPrefix(fieldName, utils.StaticValuePrefix) { // Static value
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PDDStr = fieldName[len(utils.StaticValuePrefix):]
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} else {
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PDDStr = fsev[fieldName]
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}
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return utils.ParseDurationWithSecs(PDDStr)
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}
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func (fsev FSEvent) GetADC(fieldName string) (time.Duration, error) {
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var ACDStr string
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if slices.Contains([]string{utils.MetaDefault, utils.ACD}, fieldName) {
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ACDStr = utils.FirstNonEmpty(fsev[VarCGRACD])
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if len(ACDStr) != 0 {
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ACDStr = ACDStr + "s" // ACD is in seconds and CGR expects it in seconds
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}
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} else if strings.HasPrefix(fieldName, utils.StaticValuePrefix) { // Static value
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ACDStr = fieldName[len(utils.StaticValuePrefix):]
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} else {
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ACDStr = fsev[fieldName]
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}
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return utils.ParseDurationWithSecs(ACDStr)
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}
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func (fsev FSEvent) GetRoute(fieldName string) string {
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if strings.HasPrefix(fieldName, utils.StaticValuePrefix) { // Static value
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return fieldName[len(utils.StaticValuePrefix):]
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}
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return utils.FirstNonEmpty(fsev[fieldName], fsev[VAR_CGR_ROUTE])
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}
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func (fsev FSEvent) GetDisconnectCause(fieldName string) string {
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if strings.HasPrefix(fieldName, utils.StaticValuePrefix) { // Static value
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return fieldName[len(utils.StaticValuePrefix):]
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}
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return utils.FirstNonEmpty(fsev[fieldName], fsev[VAR_CGR_DISCONNECT_CAUSE], fsev[HANGUP_CAUSE])
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}
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func (fsev FSEvent) GetOriginatorIP(fieldName string) string {
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if strings.HasPrefix(fieldName, utils.StaticValuePrefix) { // Static value
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return fieldName[len(utils.StaticValuePrefix):]
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}
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return utils.FirstNonEmpty(fsev[fieldName], fsev[VarCGROriginHost], fsev[FS_IPv4])
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}
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// GetOriginHost returns the first non empty between: fsev[VarCGROriginHost], conns[connId].cfg.Alias and fsev[FS_IPv4]
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func (fsev FSEvent) GetOriginHost() string {
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return utils.FirstNonEmpty(fsev[VarCGROriginHost], fsev[FS_IPv4])
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}
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func (fsev FSEvent) GetExtraFields() map[string]string {
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extraFields := make(map[string]string)
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const dynprefix string = utils.MetaDynReq + utils.NestingSep
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for _, fldRule := range config.CgrConfig().FsAgentCfg().ExtraFields {
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if !strings.HasPrefix(fldRule.Rules, dynprefix) {
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continue
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}
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attrName := fldRule.AttrName()[5:]
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if parsed, err := fsev.ParseEventValue(attrName, fldRule,
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config.CgrConfig().GeneralCfg().DefaultTimezone); err != nil {
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utils.Logger.Warning(fmt.Sprintf("<%s> error: %s parsing event rule: %+v", utils.FreeSWITCHAgent, err.Error(), fldRule))
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} else {
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extraFields[attrName] = parsed
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}
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}
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return extraFields
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}
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// Used in derived charging and sittuations when we need to run regexp on fields
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func (fsev FSEvent) ParseEventValue(attrName string, rsrFld *config.RSRParser, timezone string) (parsed string, err error) {
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switch attrName {
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case utils.ToR:
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return rsrFld.ParseValue(utils.MetaVoice)
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case utils.OriginID:
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return rsrFld.ParseValue(fsev.GetUUID())
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case utils.OriginHost:
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return rsrFld.ParseValue(fsev.GetOriginHost())
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case utils.Source:
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return rsrFld.ParseValue("FS_EVENT")
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case utils.RequestType:
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return rsrFld.ParseValue(fsev.GetReqType(""))
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case utils.Tenant:
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return rsrFld.ParseValue(fsev.GetTenant(""))
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case utils.Category:
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return rsrFld.ParseValue(fsev.GetCategory(""))
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case utils.AccountField:
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return rsrFld.ParseValue(fsev.GetAccount(""))
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case utils.Subject:
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return rsrFld.ParseValue(fsev.GetSubject(""))
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case utils.Destination:
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return rsrFld.ParseValue(fsev.GetDestination(""))
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case utils.SetupTime:
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st, _ := fsev.GetSetupTime("", timezone)
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return rsrFld.ParseValue(st.String())
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case utils.AnswerTime:
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at, _ := fsev.GetAnswerTime("", timezone)
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return rsrFld.ParseValue(at.String())
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case utils.Usage:
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dur, _ := fsev.GetDuration("")
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return rsrFld.ParseValue(strconv.FormatInt(dur.Nanoseconds(), 10))
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case utils.PDD:
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PDD, _ := fsev.GetPdd(utils.MetaDefault)
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return rsrFld.ParseValue(strconv.FormatFloat(PDD.Seconds(), 'f', -1, 64))
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case utils.Route:
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return rsrFld.ParseValue(fsev.GetRoute(""))
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case utils.DisconnectCause:
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return rsrFld.ParseValue(fsev.GetDisconnectCause(""))
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case utils.RunID:
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return rsrFld.ParseValue(utils.MetaDefault)
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case utils.Cost:
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return rsrFld.ParseValue(strconv.FormatFloat(-1, 'f', -1, 64)) // Recommended to use FormatCost
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default:
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if parsed, err = rsrFld.ParseValue(fsev[attrName]); err != nil {
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parsed, err = rsrFld.ParseValue(fsev[FS_VARPREFIX+attrName])
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}
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return
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}
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}
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// AsCGREvent converts FSEvent into CGREvent
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func (fsev FSEvent) AsCGREvent(timezone string) (cgrEv *utils.CGREvent, err error) {
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sTime, err := fsev.GetSetupTime(utils.MetaDefault, timezone)
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if err != nil {
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return nil, err
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}
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cgrEv = &utils.CGREvent{
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Tenant: fsev.GetTenant(utils.MetaDefault),
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ID: utils.UUIDSha1Prefix(),
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Time: &sTime,
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Event: fsev.AsMapStringInterface(timezone),
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APIOpts: fsev.GetOptions(),
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}
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return cgrEv, nil
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}
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// Used with RLs
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func (fsev FSEvent) AsMapStringInterface(timezone string) map[string]any {
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mp := make(map[string]any)
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for fld, val := range fsev.GetExtraFields() {
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mp[fld] = val
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}
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mp[utils.ToR] = utils.MetaVoice
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mp[utils.OriginID] = fsev.GetUUID()
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mp[utils.OriginHost] = fsev.GetOriginHost()
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mp[utils.Source] = "FS_" + fsev.GetName()
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mp[utils.RequestType] = fsev.GetReqType(utils.MetaDefault)
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mp[utils.Tenant] = fsev.GetTenant(utils.MetaDefault)
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mp[utils.Category] = fsev.GetCategory(utils.MetaDefault)
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mp[utils.AccountField] = fsev.GetAccount(utils.MetaDefault)
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mp[utils.Subject] = fsev.GetSubject(utils.MetaDefault)
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mp[utils.Destination] = fsev.GetDestination(utils.MetaDefault)
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mp[utils.SetupTime], _ = fsev.GetSetupTime(utils.MetaDefault, timezone)
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mp[utils.AnswerTime], _ = fsev.GetAnswerTime(utils.MetaDefault, timezone)
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mp[utils.Usage], _ = fsev.GetDuration(utils.MetaDefault)
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mp[utils.PDD], _ = fsev.GetPdd(utils.MetaDefault)
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mp[utils.ACD], _ = fsev.GetADC(utils.MetaDefault)
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mp[utils.Cost] = -1.0
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mp[utils.Route] = fsev.GetRoute(utils.MetaDefault)
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mp[utils.DisconnectCause] = fsev.GetDisconnectCause(utils.MetaDefault)
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return mp
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}
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// V1AuthorizeArgs returns the arguments used in SMGv1.Authorize
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func (fsev FSEvent) V1AuthorizeArgs() (args *sessions.V1AuthorizeArgs) {
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cgrEv, err := fsev.AsCGREvent(config.CgrConfig().GeneralCfg().DefaultTimezone)
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if err != nil {
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return
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}
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cgrEv.Event[utils.Usage] = config.CgrConfig().SessionSCfg().GetDefaultUsage(utils.IfaceAsString(cgrEv.Event[utils.ToR])) // no billsec available in auth
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args = &sessions.V1AuthorizeArgs{ // defaults
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CGREvent: cgrEv,
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}
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subsystems, has := fsev[VarCGRFlags]
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if !has {
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utils.Logger.Warning(fmt.Sprintf("<%s> cgr_flags variable is not set, using defaults",
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utils.FreeSWITCHAgent))
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args.GetMaxUsage = true
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return
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}
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args.ParseFlags(subsystems, utils.InfieldSep)
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return
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}
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// V1InitSessionArgs returns the arguments used in SessionSv1.InitSession
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func (fsev FSEvent) V1InitSessionArgs() (args *sessions.V1InitSessionArgs) {
|
|
cgrEv, err := fsev.AsCGREvent(config.CgrConfig().GeneralCfg().DefaultTimezone)
|
|
if err != nil {
|
|
return
|
|
}
|
|
args = &sessions.V1InitSessionArgs{ // defaults
|
|
CGREvent: cgrEv,
|
|
}
|
|
subsystems, has := fsev[VarCGRFlags]
|
|
if !has {
|
|
utils.Logger.Warning(fmt.Sprintf("<%s> cgr_flags variable is not set, using defaults",
|
|
utils.FreeSWITCHAgent))
|
|
args.InitSession = true
|
|
return
|
|
}
|
|
args.ParseFlags(subsystems, utils.InfieldSep)
|
|
return
|
|
}
|
|
|
|
// V1TerminateSessionArgs returns the arguments used in SMGv1.TerminateSession
|
|
func (fsev FSEvent) V1TerminateSessionArgs() (args *sessions.V1TerminateSessionArgs) {
|
|
cgrEv, err := fsev.AsCGREvent(config.CgrConfig().GeneralCfg().DefaultTimezone)
|
|
if err != nil {
|
|
return
|
|
}
|
|
args = &sessions.V1TerminateSessionArgs{ // defaults
|
|
CGREvent: cgrEv,
|
|
}
|
|
subsystems, has := fsev[VarCGRFlags]
|
|
if !has {
|
|
utils.Logger.Warning(fmt.Sprintf("<%s> cgr_flags variable is not set, using defaults",
|
|
utils.FreeSWITCHAgent))
|
|
args.TerminateSession = true
|
|
return
|
|
}
|
|
args.ParseFlags(subsystems, utils.InfieldSep)
|
|
return
|
|
}
|
|
|
|
// SliceAsFsArray Converts a slice of strings into a FS array string, contains len(array) at first index since FS does not support len(ARRAY::) for now
|
|
func SliceAsFsArray(slc []string) (arry string) {
|
|
if len(slc) == 0 {
|
|
return
|
|
}
|
|
arry = fmt.Sprintf("ARRAY::%d", len(slc))
|
|
for _, itm := range slc {
|
|
arry += "|:" + itm
|
|
}
|
|
return
|
|
}
|
|
|
|
// GetOptions returns the possible options
|
|
func (fsev FSEvent) GetOptions() (mp map[string]any) {
|
|
mp = make(map[string]any)
|
|
opts, has := fsev[VarCGROpts]
|
|
if !has {
|
|
return
|
|
}
|
|
for _, opt := range strings.Split(opts, utils.FieldsSep) {
|
|
spltOpt := strings.SplitN(opt, utils.InInFieldSep, 2)
|
|
if len(spltOpt) != 2 {
|
|
continue
|
|
}
|
|
mp[spltOpt[0]] = spltOpt[1]
|
|
}
|
|
return
|
|
}
|