public static IEnumerable <T> FilterExportables <T>(this IEnumerable <T> exportables, IServerDefinition serverDefinition = null)
where T : IExportable
{
if (exportables == null)
{
return(null);
}
//Get all the possible matches
IEnumerable <T> allMatched = serverDefinition != null?
exportables.Where(x => Match(x.Metadata, serverDefinition)).ToList() : exportables;
IList <T> list = allMatched.ToList();
//If specific server type requested and the list has any item with that server type remove the others.
//for instance is there's server for all server types and one specifically for sql and give metadata is asking for sql then
//we should return the sql one even if the other service has higher priority
IList <T> withSameServerType = list.Where(x => serverDefinition.HasSameServerName(x.Metadata)).ToList();
if (withSameServerType.Any())
{
list = withSameServerType;
}
IList <T> withSameCategory = list.Where(x => serverDefinition.HasSameCategory(x.Metadata)).ToList();
if (withSameCategory.Any())
{
list = withSameCategory;
}
return(list);
}
internal static bool EqualsServerDefinition(this IServerDefinition serverDefinition, IServerDefinition otherServerDefinition)
{
if (serverDefinition == null && otherServerDefinition == null)
{
return(true);
}
if (serverDefinition != null && otherServerDefinition != null)
{
return(((string.IsNullOrEmpty(serverDefinition.Category) && string.IsNullOrEmpty(otherServerDefinition.Category)) || serverDefinition.HasSameCategory(otherServerDefinition)) &&
((string.IsNullOrEmpty(serverDefinition.ServerType) && string.IsNullOrEmpty(otherServerDefinition.ServerType)) || serverDefinition.HasSameServerName(otherServerDefinition)));
}
return(false);
}
