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NFDiscovery.go
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NFDiscovery.go
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package amf_consumer
import (
"context"
"fmt"
"free5gc/lib/Nnrf_NFDiscovery"
"free5gc/lib/openapi/models"
"free5gc/src/amf/amf_context"
"free5gc/src/amf/amf_util"
"free5gc/src/amf/logger"
"net/http"
)
func SendSearchNFInstances(nrfUri string, targetNfType, requestNfType models.NfType, param *Nnrf_NFDiscovery.SearchNFInstancesParamOpts) (result models.SearchResult, err error) {
// Set client and set url
configuration := Nnrf_NFDiscovery.NewConfiguration()
configuration.SetBasePath(nrfUri)
client := Nnrf_NFDiscovery.NewAPIClient(configuration)
var res *http.Response
result, res, err = client.NFInstancesStoreApi.SearchNFInstances(context.TODO(), targetNfType, requestNfType, param)
if res != nil && res.StatusCode == http.StatusTemporaryRedirect {
err = fmt.Errorf("Temporary Redirect For Non NRF Consumer")
}
return
}
func SearchUdmSdmInstance(ue *amf_context.AmfUe, nrfUri string, targetNfType, requestNfType models.NfType, param *Nnrf_NFDiscovery.SearchNFInstancesParamOpts) (err error) {
resp, localErr := SendSearchNFInstances(nrfUri, targetNfType, requestNfType, param)
if localErr != nil {
err = localErr
return
}
// select the first UDM_SDM, TODO: select base on other info
var sdmUri string
for _, nfProfile := range resp.NfInstances {
ue.UdmId = nfProfile.NfInstanceId
sdmUri = amf_util.SearchNFServiceUri(nfProfile, models.ServiceName_NUDM_SDM, models.NfServiceStatus_REGISTERED)
if sdmUri != "" {
break
}
}
ue.NudmSDMUri = sdmUri
if ue.NudmSDMUri == "" {
err = fmt.Errorf("AMF can not select an UDM by NRF")
logger.ConsumerLog.Errorf(err.Error())
}
return
}
func SearchNssfNSSelectionInstance(ue *amf_context.AmfUe, nrfUri string, targetNfType, requestNfType models.NfType, param *Nnrf_NFDiscovery.SearchNFInstancesParamOpts) (err error) {
resp, localErr := SendSearchNFInstances(nrfUri, targetNfType, requestNfType, param)
if localErr != nil {
err = localErr
return
}
// select the first NSSF, TODO: select base on other info
var nssfUri string
for _, nfProfile := range resp.NfInstances {
ue.NssfUri = nfProfile.NfInstanceId
nssfUri = amf_util.SearchNFServiceUri(nfProfile, models.ServiceName_NNSSF_NSSELECTION, models.NfServiceStatus_REGISTERED)
if nssfUri != "" {
break
}
}
ue.NssfUri = nssfUri
if ue.NssfUri == "" {
err = fmt.Errorf("AMF can not select an NSSF by NRF")
}
return
}