public async Task <JObject> ReadGlobalPersistentVariables(AdsClient client, IInstanceCollection <ISymbol> symbols)
{
var jobj = new JObject();
try
{
if (client.IsConnected)
{
var iterator = new SymbolIterator(symbols,
s => s.IsPersistent && s.InstancePath.Split('.').Length >= 2 &&
!s.InstancePath.Contains("["))
;
var persistentSymbols = iterator.Where(s => s.Parent != null ? !iterator.Contains(s.Parent) : true);
var variables = new Dictionary <string, List <JObject> >();
foreach (var symbol in persistentSymbols)
{
var splitPath = symbol.InstancePath.Split('.');
var localName = splitPath.Last();
var globalName = symbol.InstancePath.Replace($".{localName}", string.Empty);
if (!variables.ContainsKey(globalName))
{
variables.Add(globalName, new List <JObject>());
}
try
{
logger.Debug($"reading symbol '{symbol.InstancePath}' in json format...");
currentTaskSubject.OnNext($"Reading {symbol.InstancePath}...");
var json = await client.ReadJson(symbol.InstancePath, force : true);
if (json.ContainsKey(localName))
{
variables[globalName].Add(json);
}
else
{
var innerObject = new JObject();
innerObject.Add(localName, json);
variables[globalName].Add(innerObject);
}
}
catch (Exception e)
{
logger.Error(string.Format(Resources.ErrorDuringReadingVariable0InJsonFormat, symbol.InstancePath), e);
}
}
foreach (var element in variables.OrderBy(pair => pair.Key.Length))
{
var uo = new JObject();
foreach (var p in element.Value)
{
foreach (var up in p.Properties())
{
uo.Add(up);
}
}
var path = element.Key.Split(".");
if (path.Count() == 1)
{
jobj.Add(element.Key, uo);
}
else
{
for (var i = 0; i < path.Length - 1; i++)
{
if ((jobj.SelectToken(string.Join(".", path.Take(i + 1))) as JObject) == null)
{
if (i > 0)
{
(jobj.SelectToken(string.Join(".", path.Take(i))) as JObject).Add(path[i], new JObject());
}
else
{
jobj.Add(path[i], new JObject());
}
}
}
try
{
(jobj.SelectToken(string.Join(".", path.Take(path.Length - 1))) as JObject).Add(path.Last(), uo);
}
catch (ArgumentException)
{
var token = (jobj.SelectToken(string.Join(".", path)) as JObject);
if (token != null)
{
foreach (var prop in uo.Properties())
{
token.Add(prop.Name, prop.Value);
}
}
}
}
}
}
}
catch (Exception e)
{
logger.Error(Resources.ErrorWhileReadingPersistentVariables, e);
}
currentTaskSubject.OnNext(string.Empty);
logger.Debug($"Persistent variable successfully downloaded!");
return(jobj);
}