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nssaiavailability_subscription.go
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nssaiavailability_subscription.go
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/*
* NSSF NSSAI Availability
*
* NSSF NSSAI Availability Service
*/
package nssf_producer
import (
"fmt"
"math"
"net/http"
"strconv"
"time"
. "free5gc/lib/openapi/models"
"free5gc/src/nssf/factory"
"free5gc/src/nssf/logger"
"free5gc/src/nssf/util"
)
// Get available subscription ID from configuration
// In this implementation, string converted from 32-bit integer is used as subscription ID
func getUnusedSubscriptionId() (string, error) {
var idx uint32 = 1
for _, subscription := range factory.NssfConfig.Subscriptions {
tempId, _ := strconv.Atoi(subscription.SubscriptionId)
if uint32(tempId) == idx {
if idx == math.MaxUint32 {
return "", fmt.Errorf("No available subscription ID")
}
idx = idx + 1
} else {
break
}
}
return strconv.Itoa(int(idx)), nil
}
// NSSAIAvailability subscription POST method
func subscriptionPost(n NssfEventSubscriptionCreateData, s *NssfEventSubscriptionCreatedData, d *ProblemDetails) (status int) {
var subscription factory.Subscription
tempId, err := getUnusedSubscriptionId()
if err != nil {
logger.Nssaiavailability.Warnf(err.Error())
*d = ProblemDetails{
Title: util.UNSUPPORTED_RESOURCE,
Status: http.StatusNotFound,
Detail: err.Error(),
}
status = http.StatusNotFound
return
}
subscription.SubscriptionId = tempId
subscription.SubscriptionData = new(NssfEventSubscriptionCreateData)
*subscription.SubscriptionData = n
factory.NssfConfig.Subscriptions = append(factory.NssfConfig.Subscriptions, subscription)
s.SubscriptionId = subscription.SubscriptionId
if !subscription.SubscriptionData.Expiry.IsZero() {
s.Expiry = new(time.Time)
*s.Expiry = *subscription.SubscriptionData.Expiry
}
s.AuthorizedNssaiAvailabilityData = util.AuthorizeOfTaListFromConfig(subscription.SubscriptionData.TaiList)
status = http.StatusCreated
return
}
func subscriptionDelete(subscriptionId string, d *ProblemDetails) (status int) {
for i, subscription := range factory.NssfConfig.Subscriptions {
if subscription.SubscriptionId == subscriptionId {
factory.NssfConfig.Subscriptions = append(factory.NssfConfig.Subscriptions[:i],
factory.NssfConfig.Subscriptions[i+1:]...)
status = http.StatusNoContent
return
}
}
// No specific subscription ID exists
problemDetail := fmt.Sprintf("Subscription ID '%s' is not available", subscriptionId)
*d = ProblemDetails{
Title: util.UNSUPPORTED_RESOURCE,
Status: http.StatusNotFound,
Detail: problemDetail,
}
status = http.StatusNotFound
return
}