public Task Open(string json)
{
_logger.LogTrace("Open called on TelemetryHub");
var subscription = JsonConvert.DeserializeObject <SubscriptionInfo>(json);
if (_users.ContainsKey(Context.ConnectionId))
{
var actualUser = _users[Context.ConnectionId];
int maxConcurrentCalls = 5;
_logger.LogInformation("Subscription request received: {0}", JsonConvert.SerializeObject(subscription));
_messageProcessor.CreateServiceBusConnectionString(
subscription.CreationResponse.ConnectionUrl,
subscription.SubscriptionTopic,
subscription.CreationResponse.SasToken,
maxConcurrentCalls
);
var subscriptionId = Guid.NewGuid().ToString();
_messageProcessor.RegisterOnMessageHandlerAndReceiveMessages(_context, subscription.CreationResponse.SubscriptionId, Context.ConnectionId);
_connectionHandler.RegisterMessageProcessor(subscriptionId, _messageProcessor);
UserHubSubscription userHubSubscription = new UserHubSubscription
{
SubscriptionId = subscription.CreationResponse.SubscriptionId,
SubscriptionType = subscription.SubscriptionTopic,
MessageProcessorId = subscriptionId,
DataAccessUrl = subscription.DataAccessApiUrl,
OcpApimSubscriptionKey = subscription.OcpApimSubscriptionKey,
Token = subscription.Token
};
actualUser.UserHubSubscription.Add(userHubSubscription);
_users.AddOrUpdate(Context.ConnectionId, actualUser, (key, oldValue) =>
{
return(actualUser);
});
}
var args = new object[] { subscription.CreationResponse.SubscriptionId };
return(Clients.Caller.SendCoreAsync("opened", args));
}
private async Task RemoveSubscription(UserHubSubscription userHubSubscription)
{
_logger.LogInformation("Remove from DA: {0}", userHubSubscription.DataAccessUrl);
try
{
HttpClient httpClient = new HttpClient();
string path = $"{userHubSubscription.DataAccessUrl}/Subscriptions?subscriptionId={userHubSubscription.SubscriptionId}&messageType={userHubSubscription.SubscriptionType}";
httpClient.DefaultRequestHeaders.Add("Ocp-Apim-Subscription-Key", userHubSubscription.OcpApimSubscriptionKey);
httpClient.DefaultRequestHeaders.Add("Authorization", "Bearer " + userHubSubscription.Token);
HttpResponseMessage result = await httpClient.DeleteAsync(path);
this._logger.LogDebug("Remove from DA result: {0}", JsonConvert.SerializeObject(result));
}
catch (Exception e)
{
this._logger.LogError("Cannot remove subscription", e);
}
}