/// <summary>
/// Returns EventMetadata object populated from config file
/// </summary>
/// <param name="eventId">ID of the EventMetadata in config file.</param>
/// <returns>Populated EventMetadata object if the ID is valid. Otherwise the properties are populated with defaults, and the Text telling that the EventMetadata could not be found</returns>
internal static EventMetadata Event(int eventId) {//Can't use indexers in static classes
try {
return _dicEvents[eventId];
}
catch(KeyNotFoundException) {
//This is a serious misconfiguration, but we are not going to fail.
Logging.LogMessage("EventMetadata eventId="+eventId.ToString()+" is not configured! Most likely, your "+EVENTS_CODES_FILE+" file is not up-to date.",true,LogLevels.Fatal);
EventMetadata msg=new EventMetadata();
msg.Id=eventId;
msg.Category.Id=1;
msg.Type=System.Diagnostics.EventLogEntryType.Warning;
msg.Text="EventMetadata eventId="+eventId.ToString()+" is not configured! Most likely, your "+EVENTS_CODES_FILE+" file is not up-to date.";
return msg;
}
}
/// <summary>
/// Deserializes the Events from file and keeps them in RAM
/// </summary>
private static void Deserialize() {
const string CATEGORY_NODE="Category";
const string EVENT_NODE="Event";
string strAction="";
DataSet ds=new DataSet();
DataTable dt;
string strConfigFile=Logging.GetAssemblyDirectory()+"\\"+EVENTS_CODES_FILE;
try {
strAction="Reading config file.";
ds.ReadXml(strConfigFile);
#region Read Categories
strAction="Attempting to read ["+CATEGORY_NODE+"] Table.number of tables="+ds.Tables.Count.ToString();
dt=ds.Tables[CATEGORY_NODE];
if(dt==null) { throw new Exception("Could not find ["+CATEGORY_NODE+"] elements."); }
//We do not clear the dictionary beforehand. If it is not clean, the cause must be fixed. We do not expect to deserialize more than once.
int intCounter=0;
foreach(DataRow dr in dt.Rows) {
intCounter++;
strAction="Reading "+CATEGORY_NODE+" element #"+intCounter.ToString();
EventCategory Cat=new EventCategory();
Cat.Id=byte.Parse(dr["Id"].ToString());
Cat.Type=dr["Type"].ToString();
_EventCategories.Add(Cat);
}
#endregion
#region Read Events
strAction="Attempting to read ["+EVENT_NODE+"] Table.";
dt=ds.Tables[EVENT_NODE];
if(dt==null) { throw new Exception("Could not find ["+EVENT_NODE+"] elements."); }
//We do not clear the dictionary beforehand. If it is not clean, the cause must be fixed. We do not expect to deserialize more than once.
intCounter=0;
foreach(DataRow dr in dt.Rows) {
intCounter++;
strAction="Reading "+EVENT_NODE+" element #"+intCounter.ToString();
EventMetadata Evt=new EventMetadata();
Evt.Id=int.Parse(dr["Id"].ToString());
strAction+=", Id="+Evt.Id.ToString();
Evt.Category.Id=byte.Parse(dr["Category"].ToString());
Evt.Type=(System.Diagnostics.EventLogEntryType)int.Parse(dr["Type"].ToString());
Evt.Text=dr["Text"].ToString();
_dicEvents.Add(Evt.Id,Evt);
}
#endregion
}
catch(Exception e) {
Logging.RelayException("Configuration File ["+strConfigFile+"]: "+strAction,e);
}
finally {
if(ds!=null) { ds.Dispose(); }
}
}