private bool CheckIfEtagHasChanged(DirectDocumentManipulator db)
{
this.Logger?.Trace(this.GetType().Name, $"Check if etag has changed - {this.GetContextDescription()}");
foreach (KeyValuePair <string, TrackedObject> obj in this.TrackingDictionary)
{
Type docType = obj.Value.DocumentType;
string etag = obj.Value.ETag;
string id = obj.Key;
Type subtype = obj.Value.Document.GetType();
string invokeMethod = "GetEtag";
object[] argument = { id, false };
string existingEtag = CallStorageMethod <string>(subtype, docType, db, obj.Value.DocumentName, invokeMethod, argument);
if (existingEtag != etag)
{
this.Logger?.Trace(this.GetType().Name, $"Etag has changed for {id} {docType?.Name} {subtype?.Name} from {etag} to {existingEtag} - {this.GetContextDescription()}");
return(false);
}
else
{
this.Logger?.Trace(this.GetType().Name, $"Etag {etag} has not changed for {id} {docType?.Name} {subtype?.Name} - {this.GetContextDescription()}");
}
}
return(true);
}
private void SaveModelChangesAndTryUpdateEtag(bool saveWithEtag, DirectDocumentManipulator db)
{
this.Logger?.Trace(this.GetType().Name, $"save model. use direct db manipulator. Try update with etag {saveWithEtag} - {this.GetContextDescription()}");
foreach (KeyValuePair <string, TrackedObject> obj in this.TrackingDictionary)
{
object d = obj.Value.Document;
Type docType = obj.Value.DocumentType;
string etag = obj.Value.ETag;
Type subtype = d.GetType();
string existingEtag;
if (saveWithEtag)
{
this.Logger?.Trace(this.GetType().Name, $"Saving {d} type {docType?.Name} {subtype?.Name} with etag {etag} use direct db manipulator. Try update with etag {saveWithEtag} - {this.GetContextDescription()}");
existingEtag = CallStorageMethod <string>(subtype, docType, db, obj.Value.DocumentName, "Update", new[] { d, etag });
}
else
{
this.Logger?.Trace(this.GetType().Name, $"Saving {d} type {docType?.Name} {subtype?.Name} with NO etag {etag} use direct db manipulator. Try update with etag {saveWithEtag} - {this.GetContextDescription()}");
existingEtag = CallStorageMethod <string>(subtype, docType, db, obj.Value.DocumentName, "Update", new[] { d, null });
}
obj.Value.ETag = existingEtag;
this.Logger?.Trace(this.GetType().Name, $"Successfully Saved {d} type {docType?.Name} with new etag {existingEtag} use direct db manipulator. Try update with etag {saveWithEtag} - {this.GetContextDescription()}");
}
}
private static T CallStorageMethod <T>(Type documentWithObjectType, Type objectOnlyType, DirectDocumentManipulator db, string documentName, string invokeMethod, object[] argument)
{
MethodInfo method = typeof(DirectDocumentManipulator).GetMethod("GetDBRef")
.MakeGenericMethod(documentWithObjectType, objectOnlyType);
object dbref = method.Invoke(db, new object[] { documentName });
MethodInfo method2 = dbref.GetType().GetMethod(invokeMethod);
var result = (T)method2.Invoke(dbref, argument);
return(result);
}
