private void GetSubscriptionInternal(SubscriptionGeneralDataAndStats subscriptionData, bool history)
{
if (_subscriptionConnectionStates.TryGetValue(subscriptionData.SubscriptionId, out SubscriptionConnectionState subscriptionConnectionState))
{
subscriptionData.Connection = subscriptionConnectionState.Connection;
if (history)//Only valid if this is my subscription
{
SetSubscriptionHistory(subscriptionConnectionState, subscriptionData);
}
}
}
public SubscriptionGeneralDataAndStats GetSubscriptionFromServerStore(TransactionOperationContext context, string name)
{
var subscriptionBlittable = _serverStore.Cluster.Read(context, SubscriptionState.GenerateSubscriptionItemKeyName(_db.Name, name));
if (subscriptionBlittable == null)
{
throw new SubscriptionDoesNotExistException($"Subscription with name {name} was not found in server store");
}
var subscriptionState = JsonDeserializationClient.SubscriptionState(subscriptionBlittable);
var subscriptionJsonValue = new SubscriptionGeneralDataAndStats(subscriptionState);
return(subscriptionJsonValue);
}
public IEnumerable <SubscriptionGeneralDataAndStats> GetAllSubscriptions(TransactionOperationContext serverStoreContext, bool history, int start, int take)
{
foreach (var keyValue in ClusterStateMachine.ReadValuesStartingWith(serverStoreContext, SubscriptionState.SubscriptionPrefix(_db.Name)))
{
if (start > 0)
{
start--;
continue;
}
if (take-- <= 0)
{
yield break;
}
var subscriptionState = JsonDeserializationClient.SubscriptionState(keyValue.Value);
var subscriptionGeneralData = new SubscriptionGeneralDataAndStats(subscriptionState);
GetSubscriptionInternal(subscriptionGeneralData, history);
yield return(subscriptionGeneralData);
}
}
static void FillNodesAvailabilityReportForState(SubscriptionGeneralDataAndStats subscription, DatabaseTopology topology, Dictionary <string, string> databaseTopologyAvailabilityExplenation, List <string> stateGroup, string stateName)
{
foreach (var nodeInGroup in stateGroup)
{
var rehabMessage = string.Empty;
if (subscription.MentorNode == nodeInGroup)
{
rehabMessage = $"Although this node is a mentor, it's state is {stateName} and can't run the subscription";
}
else
{
rehabMessage = $"Node's state is {stateName}, can't run subscription";
}
if (topology.DemotionReasons.TryGetValue(nodeInGroup, out var demotionReason))
{
rehabMessage = rehabMessage + ". Reason:" + demotionReason;
}
databaseTopologyAvailabilityExplenation[nodeInGroup] = rehabMessage;
}
}
private static void SetSubscriptionHistory(SubscriptionConnectionState subscriptionConnectionState, SubscriptionGeneralDataAndStats subscriptionData)
{
subscriptionData.RecentConnections = subscriptionConnectionState.RecentConnections;
subscriptionData.RecentRejectedConnections = subscriptionConnectionState.RecentRejectedConnections;
}
