Hi,
Am trying to implement a case where a client sends a POST request to
subscribe to some service to a server.
The server have to responds with the subscription data, however after some
time if there is a change in the subscritpion
information in the server, the server have to send notification to the
client about the changes using the "nfStatusNotificationUri" in the request
body ("nfStatusNotificationUri" in the JSON
data below).
I currently do not have an idea how to do this. I have implemented the POST
subscription part but ave no idea how to implent the notification part.
Can anyone help me or give me some quide about how to do this.
Am new and now learning golang.
This what i have done so far:
// server
// functions
func (m *NfInstanceDataAccess) Insertsub(nfinstancesub Subscriptions) error
{
err := db.C(COLLECTION).Insert(&nfinstancesub)
return err
}
func CreateNewSubscriptionPost(w http.ResponseWriter, r *http.Request) {
var nfinstancesub Subscriptions
id := uuid.New()
subscriptionID := id.String()
if r.Header.Get("Accept") != "application/json" {
WriteError(w, ErrNotAcceptable)
return
}
if err := json.NewDecoder(r.Body).Decode(&nfinstancesub); err != nil {
respondWithError(w, http.StatusBadRequest, "Invalid request payload")
return
}
nfinstancesub.ID = bson.NewObjectId()
nfinstancesub.SubscriptionID = subscriptionID
if err := da.Insertsub(nfinstancesub); err != nil {
respondWithError(w, http.StatusInternalServerError, err.Error())
return
}
w.Header().Set("Response-Code", "201")
w.Header().Set("Response-Desc", "Success")
w.Header().Set("Cache-Control", "max-age=2592000") // 30 days
respondWithJson(w, http.StatusCreated, nfinstancesub)
}
// Main function
func main() {
http.HandleFunc("/nnrf-nfm/v1/subscriptions, CreateNewSubscriptionPost)
log.Fatal(http.ListenAndServe(":8080", nil))
}
The JSON data to request subscription including the notification
uri "nfStatusNotificationUri".
Am using mongodb to store this json data request is sent.
{
"nfStatusNotificationUri": "string",
"subscriptionID": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
"validityTime": "2019-02-11T09:45:52.015Z",
"reqNotifEvents": [
"NF_REGISTERED",
"string"
],
"plmnId": {
"mcc": "string",
"mnc": "string"
},
"notifCondition": {
"monitoredAttributes": [
"string"
],
"unmonitoredAttributes": [
"string"
]
},
"reqNfFqdn": "string"
}
Thanks in advance.
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