protected override void DoWaitForCompleteStop()
{
m_SubnetBST = null;
m_Locations = null;
}
protected override void DoStart()
{
if (m_Resolution != LookupResolution.Country && m_Resolution != LookupResolution.City)
{
throw new GeoException(StringConsts.GEO_LOOKUP_SVC_RESOLUTION_ERROR.Args(m_Resolution));
}
if (!Directory.Exists(m_DataPath))
{
throw new GeoException(StringConsts.GEO_LOOKUP_SVC_PATH_ERROR.Args(m_DataPath ?? StringConsts.UNKNOWN));
}
var fnBlocks = Path.Combine(m_DataPath, "GeoLite2-{0}-Blocks-IPv6.csv".Args(m_Resolution));
var fnBlocksV4 = Path.Combine(m_DataPath, "GeoLite2-{0}-Blocks-IPv4.csv".Args(m_Resolution));
var fnLocations = Path.Combine(m_DataPath, "GeoLite2-{0}-Locations-en.csv".Args(m_Resolution));
if (!File.Exists(fnBlocks))
{
throw new GeoException(StringConsts.GEO_LOOKUP_SVC_DATA_FILE_ERROR.Args(fnBlocks));
}
if (!File.Exists(fnBlocksV4))
{
throw new GeoException(StringConsts.GEO_LOOKUP_SVC_DATA_FILE_ERROR.Args(fnBlocksV4));
}
if (!File.Exists(fnLocations))
{
throw new GeoException(StringConsts.GEO_LOOKUP_SVC_DATA_FILE_ERROR.Args(fnLocations));
}
m_CancelStart = false;
m_Locations = new Dictionary <SealedString, Location>();
try
{
const int MAX_PARSE_ERRORS = 8;
var tree = new BinaryTree <Subnet, IPSubnetBlock>();
var scope = new SealedString.Scope();
foreach (var blocksFn in new[] { fnBlocks, fnBlocksV4 })
{
using (var stream = new FileStream(blocksFn, FileMode.Open, FileAccess.Read, FileShare.Read, 4 * 1024 * 1024))
{
int errors = 0;
try
{
foreach (var row in stream.AsCharEnumerable().ParseCSV(skipHeader: true, columns: 10))
{
if (m_CancelStart || !App.Active)
{
break;
}
var arr = row.ToArray();
var block = new IPSubnetBlock(
scope.Seal(arr[0]),
scope.Seal(arr[1]),
scope.Seal(arr[2]),
scope.Seal(arr[3]),
arr[4].AsBool(),
arr[5].AsBool(),
scope.Seal(arr[6]),
arr[7].AsFloat(),
arr[8].AsFloat());
tree[new Subnet(block.Subnet.Value, true)] = block;
}
}
catch (Exception error)
{
WriteLog(MessageType.Error, "DoStart('{0}')".Args(blocksFn), "Line: {0} {1}".Args(0 /*line*/, error.ToMessageWithType()), error);
errors++;
if (errors > MAX_PARSE_ERRORS)
{
WriteLog(MessageType.CatastrophicError, "DoStart('{0}')".Args(blocksFn), "Errors > {0}. Aborting file '{1}' import".Args(MAX_PARSE_ERRORS, blocksFn));
break;
}
}
}
}
m_SubnetBST = new SubnetTree <IPSubnetBlock>(tree.BuildIndex());
using (var stream = new FileStream(fnLocations, FileMode.Open, FileAccess.Read, FileShare.Read, 4 * 1024 * 1024))
{
try
{
foreach (var row in stream.AsCharEnumerable().ParseCSV(skipHeader: true, columns: 13))
{
if (m_CancelStart || !App.Active)
{
break;
}
var arr = row.ToArray();
var location = new Location(
scope.Seal(arr[0]),
scope.Seal(arr[1]),
scope.Seal(arr[2]),
scope.Seal(arr[3]),
scope.Seal(arr[4]),
scope.Seal(arr[5]),
scope.Seal(arr[6]),
scope.Seal(arr[7]),
scope.Seal(arr[8]),
scope.Seal(arr[9]),
scope.Seal(arr[10]),
scope.Seal(arr[11]),
scope.Seal(arr[12]));
m_Locations.Add(location.ID, location);
}
}
catch (CSVParserException error)
{
WriteLog(MessageType.Error, "DoStart('{0}')".Args(fnLocations), "Line: {0} Column: {1} {2}".Args(error.Line, error.Column, error.ToMessageWithType()), error);
}
catch (Exception error)
{
WriteLog(MessageType.Error, "DoStart('{0}')".Args(fnLocations), "{1}".Args(error.ToMessageWithType()), error);
}
}
}
catch
{
m_SubnetBST = null;
m_Locations = null;
m_SubnetBST = null;
throw;
}
if (m_CancelStart)
{
throw new GeoException(StringConsts.GEO_LOOKUP_SVC_CANCELED_ERROR);
}
}