public async Task <HistoryRoot> GetHistDataCollection(string sn, string startTime, string endTime)
{
Dictionary <string, string> keyValuePairs = new Dictionary <string, string>();
keyValuePairs.Add("key", key);
keyValuePairs.Add("sn", sn);
keyValuePairs.Add("startTime", startTime);
keyValuePairs.Add("endTime", endTime);
return(await Task.Run(() =>
{
string err;
var result = this.Post(URLEnum.FindPastRecordsData, keyValuePairs, out err);
if (result == null)
{
return null;
}
HistoryRoot model = JsonConvert.DeserializeObject <HistoryRoot>(result);
model.message = err;
return model;
}));
}
public async Task Add(IEnumerable <ElementState> elements)
{
using (var context = new HistoryContext())
{
foreach (var result in elements.GroupBy(t => t.Id))
{
var root = await context.Roots.SingleOrDefaultAsync(r => r.Name == result.Key);
if (root == null)
{
root = new HistoryRoot()
{
Name = result.Key
};
context.Roots.Add(root);
}
foreach (var t in result)
{
foreach (var r in t.Output)
{
root.History.Add(new History()
{
Name = r.Name,
Value = r.Value ?? "",
TimestampUtc = t.Timestamp
});
}
}
}
await context.SaveChangesAsync();
}
}
