public bool IsOperationAllowed(OperationType operation)
{
return(allowedOperations.HasFlag(operation));
}
private ReadOnlyCollection <Uri> GetPreferredAvailableEndpoints(ReadOnlyDictionary <string, Uri> endpointsByLocation, ReadOnlyCollection <string> orderedLocations, OperationType expectedAvailableOperation, Uri fallbackEndpoint)
{
List <Uri> endpoints = new List <Uri>();
DatabaseAccountLocationsInfo currentLocationInfo = this.locationInfo;
// if enableEndpointDiscovery is false, we always use the defaultEndpoint that user passed in during documentClient init
if (this.enableEndpointDiscovery)
{
if (this.CanUseMultipleWriteLocations() || expectedAvailableOperation.HasFlag(OperationType.Read))
{
List <Uri> unavailableEndpoints = new List <Uri>();
// When client can not use multiple write locations, preferred locations list should only be used
// determining read endpoints order.
// If client can use multiple write locations, preferred locations list should be used for determining
// both read and write endpoints order.
foreach (string location in currentLocationInfo.PreferredLocations)
{
Uri endpoint;
if (endpointsByLocation.TryGetValue(location, out endpoint))
{
if (this.IsEndpointUnavailable(endpoint, expectedAvailableOperation))
{
unavailableEndpoints.Add(endpoint);
}
else
{
endpoints.Add(endpoint);
}
}
}
if (endpoints.Count == 0)
{
endpoints.Add(fallbackEndpoint);
}
endpoints.AddRange(unavailableEndpoints);
}
else
{
foreach (string location in orderedLocations)
{
Uri endpoint;
if (!string.IsNullOrEmpty(location) && // location is empty during manual failover
endpointsByLocation.TryGetValue(location, out endpoint))
{
endpoints.Add(endpoint);
}
}
}
}
if (endpoints.Count == 0)
{
endpoints.Add(fallbackEndpoint);
}
return(endpoints.AsReadOnly());
}