private static RegionEndpoint GetEndpoint(string systemName, string displayName)
{
RegionEndpoint regionEndpoint = null;
if (displayName == null)
{
lock (_hashBySystemName)
{
if (_hashBySystemName.TryGetValue(systemName, out regionEndpoint))
{
return(regionEndpoint);
}
}
// GetRegionEndpoint will always return a non-null value. If the the region(systemName) is unknown,
// the providers will create a fallback instance that will generate an endpoint to the best
// of its knowledge.
displayName = RegionEndpointProvider.GetRegionEndpoint(systemName).DisplayName;
}
lock (_hashBySystemName)
{
if (_hashBySystemName.TryGetValue(systemName, out regionEndpoint))
{
return(regionEndpoint);
}
regionEndpoint = new RegionEndpoint(systemName, displayName);
_hashBySystemName.Add(regionEndpoint.SystemName, regionEndpoint);
}
return(regionEndpoint);
}
public static RegionEndpoint GetBySystemName(string systemName)
{
RegionEndpoint value = null;
if (_hashBySystemName.TryGetValue(systemName, out value))
{
return(value);
}
IRegionEndpoint regionEndpoint = RegionEndpointProvider.GetRegionEndpoint(systemName);
return(NewEndpoint(systemName, regionEndpoint.DisplayName));
}
/// <summary>
/// Gets the region based on its system name like "us-west-1"
/// </summary>
/// <param name="systemName">The system name of the service like "us-west-1"</param>
/// <returns></returns>
public static RegionEndpoint GetBySystemName(string systemName)
{
RegionEndpoint region = null;
if (_hashBySystemName.TryGetValue(systemName, out region))
{
return(region);
}
IRegionEndpoint regionEndpointFromProvider = RegionEndpointProvider.GetRegionEndpoint(systemName);
// We received an instance of IRegionEndpoint from a provider,
// now we should wrap it in RegionEndpoint before returning the data back to the client code.
// GetRegionEndpoint will always return a non-null value. If the the region(systemName) is unknown,
// the providers will create a fallback instance that will generate an endpoint to the best
// of its knowledge.
return(NewEndpoint(systemName, regionEndpointFromProvider.DisplayName));
}
/// <summary>
/// Returns the DNS suffix for the given partition, or
/// an empty string if a matching partition was not found in endpoints.json
/// </summary>
/// <param name="partition">partition</param>
/// <returns>DNS suffix for the given partition, empty string if a matching partition was not found</returns>
public static string GetDnsSuffixForPartition(string partition)
{
return(RegionEndpointProvider.GetDnsSuffixForPartition(partition));
}
