int IComparable.CompareTo(object obj)
{
//W3C_Extended_Log tempLog = obj is W3C_Extended_Log ? (W3C_Extended_Log)obj : null;
W3C_Extended_Log tempLog = (W3C_Extended_Log)obj;
if (tempLog == null)
{
throw new InvalidCastException();
}
//if less than zero then this instance is earlier than value, if zero its the same, and if greater then later
return(this.Date.CompareTo(tempLog.Date));
}
public IEnumerable<W3C_Extended_Log> ParseW3CFormat()
{
//Use the findFields method to get only the supported columns from the log file
if(!FoundFields)
{
FindFields();
}
//for parsing the time, the timezone for W3C extended is Greenwhich Standard Time
TimeZoneInfo gmtZone = TimeZoneInfo.FindSystemTimeZoneById("Greenwich Standard Time");
TimeZoneInfo pstZone = TimeZoneInfo.FindSystemTimeZoneById("Pacific Standard Time");
string line;
//int count = 0;
while ((line = _reader.ReadLine()) != null)
{
//count = 0;
//if the line is not a directive line then its one of the HTTP log data
bool isDirectiveLine = line.StartsWith("#", StringComparison.OrdinalIgnoreCase);
if (!isDirectiveLine)
{
_log = new W3C_Extended_Log();
//get the data and follow the Grammar
string[] data = line.Split(default(Char[]), StringSplitOptions.RemoveEmptyEntries);
//using a foreach loop and follow through the grammar
for (int i = 0; i < _fields.Count(); i++)
{
//check that the text fits the grammar
bool isValid = CheckGrammer(data[i], _fields[i].ToLower());
if (isValid)
{
switch (_fields[i].ToLower())
{
case W3C_ExtendedConstants.DATE:
_log.Date = DateTime.Parse(data[i]);
break;
case W3C_ExtendedConstants.TIME:
_log.Time = DateTime.Parse(data[i]);
break;
case W3C_ExtendedConstants.TIME_TAKEN:
_log.TimeTaken = Convert.ToInt32(data[i]);
break;
case W3C_ExtendedConstants.BYTES:
_log.BytesSent = Convert.ToInt32(data[i]);
break;
case W3C_ExtendedConstants.CACHED:
//nothing
break;
case W3C_ExtendedConstants.CLIENT_IP:
try
{
_log.ClientIP = System.Net.IPAddress.Parse(data[i]);
}
catch (FormatException)
{
_log.ClientIP = System.Net.IPAddress.Parse("0");
}
break;
case W3C_ExtendedConstants.USER_NAME:
_log.UserName = data[i];
break;
case W3C_ExtendedConstants.SERVICE_NAME:
_log.ServerSiteName = data[i];
break;
case W3C_ExtendedConstants.SERVER_IP:
try
{
_log.ServerIP = System.Net.IPAddress.Parse(data[i]);
}
catch (FormatException)
{
_log.ServerIP = System.Net.IPAddress.Parse("0");
}
break;
case W3C_ExtendedConstants.SERVER_PORT:
_log.ServerPort = Convert.ToInt16(data[i]);
break;
case W3C_ExtendedConstants.DNS:
//nothing
break;
case W3C_ExtendedConstants.STATUS:
_log.StatusCode = Convert.ToInt16(data[i]);
break;
case W3C_ExtendedConstants.WIN32_STATUS:
_log.Win32_Status = Convert.ToUInt32(data[i]);
break;
case W3C_ExtendedConstants.COMMENT:
//nothing
break;
case W3C_ExtendedConstants.METHOD:
_log.TypeRequest = data[i];
break;
case W3C_ExtendedConstants.URI:
//nothing
break;
case W3C_ExtendedConstants.URI_STEM:
_log.UriStem = data[i];
break;
case W3C_ExtendedConstants.URI_QUERY:
_log.UriQuery = data[i];
break;
case W3C_ExtendedConstants.BYTES_SENT:
_log.BytesSent = Convert.ToInt32(data[i]);
break;
case W3C_ExtendedConstants.BYTES_RECEIVED:
_log.BytesSent = Convert.ToInt32(data[i]);
break;
case W3C_ExtendedConstants.PROTOCOL_VERSION:
_log.ProtocolVersion = data[i];
break;
case W3C_ExtendedConstants.HOST:
_log.Host = data[i];
break;
case W3C_ExtendedConstants.USER_AGENT:
_log.UserAgent = data[i];
break;
case W3C_ExtendedConstants.COOKIE:
CookieParser cookieParser = new CookieParser();
_log.Cookies = cookieParser.ExtractServerHeaderResponseCookies(data[i]);
break;
case W3C_ExtendedConstants.REFERRER:
_log.Referrer = new Uri(data[i]);
break;
}
}//end of if statement
}
string date = _log.Date.ToLongDateString();
string time = _log.Time.ToLongTimeString();
//we had earlier the time and date of a log as seperate instances of the date time object, to make querying of logs simple, merged the date and time
//into a single instance of DateTime.
_log.UTCLogDateTime = DateTime.Parse(date + " " + time);
//Trace.WriteLine(_log.UTCLogDateTime.ToString());
yield return _log;
}
}
//After reading this file, set this back to false for the next file
FoundFields = false;
_reader.Close();
}
/// <summary>
/// Used this function to perform metric computations between a start time and intermediate time
/// </summary>
/// <param name="start"></param>
/// <param name="end">The intermediate time</param>
/// <param name="log">HttpLog that these metrics will use to compute data</param>
private void HelperFunction(DateTime start, DateTime end, W3C_Extended_Log log)
{
if (log.UTCLogDateTime >= start && log.UTCLogDateTime < end)
{
foreach (IMetric job in _metricCollection)
{
job.ProcessEntry(log);
}
}
}