/// <summary>
/// Selects and returns the statistics for a certain user.
/// </summary>
/// <param name="ci">The <see cref="ClientInfo"/> of the client requesting the statistics.</param>
/// <param name="stats">The <see cref="UserStatistics"/> of the user.</param>
/// <returns>Null if the operation succeeds, or <see cref="SerializedException"/>
/// encapsulating the error that occured if the operation fails.</returns>
public SerializedException SelectUserStatistics(ClientInfo ci, ref UserStatistics stats)
{
SerializedException sx = null;
try
{
if (!ConnectToDatabase())
{
throw new CWDBConnectionFailedException();
}
SqlCommand cmd = new SqlCommand("cw_select_user_statistic", dbcon);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.Add("@user_id", SqlDbType.Int);
cmd.Parameters[0].Value = ci.UserID;
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataSet ds = new DataSet();
da.Fill(ds);
da.Dispose();
cmd.Dispose();
if (ds.Tables[0].Rows.Count > 0)
{
stats.RegistrationDate = (DateTime)ds.Tables[0].Rows[0][2];
stats.LastActive = (DateTime)ds.Tables[0].Rows[0][6];
foreach (DataRow dr in ds.Tables[0].Rows)
{
stats.NumClients++;
stats.UrlsAssigned += (long)dr[4];
stats.UrlsReturned += (long)dr[5];
DateTime la = (DateTime)dr[6];
if (la > stats.LastActive)
{
stats.LastActive = la;
}
}
}
ds.Dispose();
if (!DisconnectFromDatabase())
{
throw new CWDBConnectionFailedException("Disconnect from database failure.");
}
}
catch (Exception e)
{
sx = new SerializedException(e.GetType().ToString(), e.Message, e.ToString());
if (settings.LogLevel <= CWLogLevel.LogWarning)
{
settings.Log.LogWarning("SelectUserStatistics failed for user " + ci.UserID.ToString() + ":" + e.ToString());
}
}
finally
{
UpdateClientLastActive(ci);
LogClientAction(ci, CWClientActions.LogSendUserStatistics);
}
return sx;
}
/// <summary>
/// Attempts to retrieve the user's statistics from the server.
/// </summary>
/// <param name="stats">The statistics of the user.</param>
/// <returns>Null if the operation succeeds, or a <see cref="SerializedException"/>
/// encapsulating the error that occured if the operation fails.</returns>
public SerializedException GetUserStatistics(ref UserStatistics stats)
{
SerializedException sx = null;
try
{
//WebServiceProxy proxy = WebServiceProxy.Instance();
UserStatistics userstats = null;
sx = proxy.SendUserStatistics(globals.Client_Info, out userstats);
if(sx!=null)
{
log.LogError("An error occured while retrieving the statistics:" + sx.Message);
globals.FileLog.LogWarning("CrawlWave.Client: Failed to retrieve user's statistics: " + sx.Message);
stats = userstats;
}
}
catch(Exception e)
{
log.LogWarning("An error occured while retrieving the statistics: " + e.Message);
globals.FileLog.LogWarning("CrawlWave.Client: Failed to retrieve user's statistics: " + e.ToString());
sx = new SerializedException(e.GetType().ToString(), e.Message, e.StackTrace);
}
finally
{
GC.Collect();
}
return sx;
}
public SerializedException SendUserStatistics(ClientInfo ci, out UserStatistics stats)
{
stats = new UserStatistics();
engine.LogClientAction(ci, CWClientActions.LogSendUserStatistics);
return engine.SelectUserStatistics(ci, ref stats);
}