private static async Task <HttpResponseMessage> Subscribe(HttpRequestMessage req, CloudTable table,
string eventName)
{
var jsonContent = await req.Content.ReadAsStringAsync();
dynamic data = JsonConvert.DeserializeObject(jsonContent);
string callbackUrl = data?.CallbackUrl;
// create subscription record
var subscription = new WebHookSubscription()
{
Id = Guid.NewGuid().ToString(),
PartitionKey = eventName,
CallbackUrl = callbackUrl
};
// save in table
var insert = TableOperation.Insert(subscription);
await table.ExecuteAsync(insert);
// return url in "Location" header
var response = req.CreateResponse(HttpStatusCode.Created, "Web hook subscription successfully created");
response.Headers.Add("Location",
Environment.GetEnvironmentVariable("FUNCTION_APP_DOMAIN", EnvironmentVariableTarget.Process)
+ "/api/Subscription/DELETE?code="
+ Environment.GetEnvironmentVariable("SUBSCRIPTION_ROUTE_CODE", EnvironmentVariableTarget.Process)
+ "&id="
+ subscription.Id
+ "&event="
+ eventName);
return(response);
}
private static async Task <HttpResponseMessage> Unsubscribe(HttpRequestMessage req, CloudTable table)
{
var id = req.GetQueryNameValuePairs()
.FirstOrDefault(q => string.Compare(q.Key, "id", StringComparison.OrdinalIgnoreCase) == 0)
.Value;
var eventName = req.GetQueryNameValuePairs()
.FirstOrDefault(q => string.Compare(q.Key, "event", StringComparison.OrdinalIgnoreCase) == 0)
.Value;
var toDelete = new WebHookSubscription()
{
Id = id,
PartitionKey = eventName,
ETag = "*"
};
var delete = TableOperation.Delete(toDelete);
await table.ExecuteAsync(delete);
return(req.CreateResponse(HttpStatusCode.OK, "Web hook subscription successfully deleted"));
}
