private async Task DeleteVariablesOfWorker(HistoryDBWorker worker, VariableRef[] variables)
{
foreach (VariableRef variable in variables)
{
await worker.Delete(variable);
NotifyChange(variable, Timestamp.Empty, Timestamp.Max, HistoryChangeType.Delete);
}
}
public async Task <long> HistorianCount(VariableRef variable, Timestamp startInclusive, Timestamp endInclusive)
{
HistoryDBWorker worker = WorkerByVarRef(variable);
if (worker == null)
{
throw new Exception("Failed to find DB worker for variable " + variable);
}
CheckExistingVariable(variable);
return(await worker.Count(variable, startInclusive, endInclusive));
}
public async Task <IList <VTTQ> > HistorianReadRaw(VariableRef variable, Timestamp startInclusive, Timestamp endInclusive, int maxValues, BoundingMethod bounding)
{
HistoryDBWorker worker = WorkerByVarRef(variable);
if (worker == null)
{
throw new Exception("Failed to find DB worker for variable " + variable);
}
CheckExistingVariable(variable);
return(await worker.ReadRaw(variable, startInclusive, endInclusive, maxValues, bounding));
}
public async Task <long> HistorianDeleteInterval(VariableRef variable, Timestamp startInclusive, Timestamp endInclusive)
{
HistoryDBWorker worker = WorkerByVarRef(variable);
if (worker == null)
{
throw new Exception("Failed to find DB worker for variable " + variable);
}
CheckExistingVariable(variable);
long res = await worker.DeleteInterval(variable, startInclusive, endInclusive);
NotifyChange(variable, startInclusive, endInclusive, HistoryChangeType.Delete);
return(res);
}
public async Task HistorianModify(VariableRef variable, VTQ[] data, ModifyMode mode)
{
HistoryDBWorker worker = WorkerByVarRef(variable);
if (worker == null)
{
throw new Exception("Failed to find DB worker for variable " + variable);
}
Variable varDesc = CheckExistingVariable(variable);
await worker.Modify(variable, varDesc, data, mode);
if (data.Length > 0)
{
Timestamp start = data.Min(x => x.T);
Timestamp end = data.Max(x => x.T);
NotifyChange(variable, start, end, MapMode(mode));
}
}
public async Task DeleteVariables(IList <VariableRef> variables)
{
var groups = variables.Select(v => Tuple.Create(WorkerByVarRef(v), v)).GroupBy(x => x.Item1).ToArray();
Task[] tasks = groups.Select(group => {
HistoryDBWorker worker = group.Key;
VariableRef[] variablesForWorker = group.Select(tp => tp.Item2).ToArray();
if (worker == null)
{
if (variablesForWorker.Length == 1)
{
logger.Warn("Failed to find DB worker for variable: {0}", variablesForWorker[0]);
}
else
{
logger.Warn("Failed to find DB worker for {0} variables: {1}, ...", variablesForWorker.Length, variablesForWorker[0]);
}
return(Task.FromResult(true));
}
return(DeleteVariablesOfWorker(worker, variablesForWorker));
}).ToArray();
await Task.WhenAll(tasks);
}
public WorkerWithBuffer(HistoryDBWorker worker)
{
Worker = worker;
Buffer = new List <StoreValue>();
}
public async Task Start(Module[] modules, Func <VariableRef, Variable?> fVarResolver, Action <IList <HistoryChange> > fNotifyChanges, bool emptyDBs)
{
this.syncContext = SynchronizationContext.Current;
this.fVarResolver = fVarResolver;
this.fNotifyChanges = fNotifyChanges;
foreach (Module m in modules)
{
var workers = new List <WorkerWithBuffer>();
WorkerWithBuffer?defaultWorker = null;
var variable2Worker = new Dictionary <string, WorkerWithBuffer>();
foreach (HistoryDB db in m.HistoryDBs)
{
string dbt = db.Type.ToLowerInvariant();
if (dbt != "sqlite" && dbt != "postgres" && dbt != "postgresflat")
{
throw new Exception($"Unknown DB type '{db.Type}' in configuration of module " + m.ID);
}
Func <Timeseries.TimeSeriesDB> fCreateDB = () => throw new Exception($"Unknown DB type '{db.Type}' in configuration of module " + m.ID);
if (dbt == "sqlite")
{
fCreateDB = () => new Timeseries.SQLite.SQLiteTimeseriesDB();
}
else if (dbt == "postgres")
{
fCreateDB = () => new Timeseries.Postgres.PostgresTimeseriesDB();
}
else if (dbt == "postgresflat")
{
fCreateDB = () => new Timeseries.PostgresFlat.PostgresFlatTimeseriesDB();
}
if (emptyDBs)
{
var d = fCreateDB();
d.ClearDatabase(db.Name, db.ConnectionString, db.Settings);
}
var worker = new HistoryDBWorker(db.Name, db.ConnectionString, db.Settings, db.PrioritizeReadRequests, fCreateDB, Notify_Append);
var wb = new WorkerWithBuffer(worker);
workers.Add(wb);
if (db.Variables != null && db.Variables.Length > 0)
{
foreach (string varName in db.Variables)
{
variable2Worker[varName] = wb;
}
}
else
{
if (defaultWorker == null)
{
defaultWorker = wb;
}
else
{
logger.Warn("More than one default DB worker for module " + m.ID);
}
}
await worker.Start();
}
if (defaultWorker == null && m.HistoryDBs.Count > 0)
{
logger.Warn("No default DB worker for module " + m.ID);
}
dbs[m.ID] = new ModuleDBs(m.ID, workers.ToArray(), variable2Worker, defaultWorker);
}
}
