/// <summary>
/// This constructor is responsible for instantiating the vlanMapInfo.
/// </summary>
/// <param name="txnMng">Transaction manager object.</param>
/// <param name="VtnHostName">Parent Folder name.</param>
/// <param name="mode">Write or Read mode in which file to be opened.</param>
public VLANIDMap(TransactionManager txnMng,
string VtnHostName,
TransactionManager.OpenMode mode)
{
var JavaScriptSerializer = new JavaScriptSerializer();
JavaScriptSerializer.MaxJsonLength = int.MaxValue;
StringBuilder json = new StringBuilder("\"vMNetworkName\":\"" + VtnHostName + "\"");
json.Append(" \"TransactionManager\":" + JavaScriptSerializer.Serialize(txnMng));
json.Append(" \"OpenMode\":\"" + mode + "\"");
ODLVSEMETW.EventWriteStartLibrary(
MethodBase.GetCurrentMethod().Name,
json.ToString());
if (txnMng == null)
{
throw new ArgumentException(
"Parameter 'txnMng' is null or invalid.");
}
if (string.IsNullOrWhiteSpace(VtnHostName))
{
VSEMConfig vsemConfig = new VSEMConfig();
txnMng.SetConfigManager(vsemConfig, TransactionManager.OpenMode.ReadMode);
VtnHostName = vsemConfig.Info.ServerName;
}
if (string.IsNullOrWhiteSpace(VtnHostName))
{
throw new ArgumentException(
"Parameter 'VTNCoordinatorHostName' is null or invalid.");
}
try {
VLANIDMappingConfig vLANIDMappingConfig = new VLANIDMappingConfig(VtnHostName);
txnMng.SetConfigManager(vLANIDMappingConfig, mode);
this.vlanMapInfo = vLANIDMappingConfig.VLANIDMapping;
} catch (System.IO.IOException) {
ODLVSEMETW.EventWriteConfigManagerFileIOError(MethodBase.GetCurrentMethod().Name,
configFileIOErrorValidationMessage);
throw new InvalidOperationException(
configFileIOErrorValidationMessage);
}
}
/// <summary>
/// Initialize of ConfigManager.
/// </summary>
/// <param name="mode">Open mode of config file.</param>
public void Initialize(TransactionManager.OpenMode mode)
{
ConfigManagerBase config = null;
if (mode == TransactionManager.OpenMode.WriteMode)
{
FileInfo info = new FileInfo(this.Path);
if (info.Directory.Exists == false)
{
info.Directory.Create();
}
}
// Open the config file.
// (Retry max RETRY_COUNT times at RETRY_INTERVAL msec intervals)
for (var cnt = 1; cnt <= RETRY_COUNT; cnt++)
{
try {
if (mode == TransactionManager.OpenMode.WriteMode)
{
// Open the config file by WriteMode.
this.FileStreamInfo = new FileStream(this.Path,
FileMode.OpenOrCreate,
FileAccess.ReadWrite,
FileShare.None);
}
else if (mode == TransactionManager.OpenMode.ReadMode)
{
// Open the config file by ReadMode.
this.FileStreamInfo = new FileStream(this.Path,
FileMode.Open,
FileAccess.Read,
FileShare.Read);
}
ODLVSEMETW.EventWriteConfigManagerFileOpen(this.Path, (uint)mode);
break;
} catch (Exception e) {
// If the config file is locked, retry the open.
if (e.HResult != unchecked ((int)FILE_LOCK_FAILED_CODE) || cnt == RETRY_COUNT)
{
ODLVSEMETW.EventWriteConfigManagerFileIOError(MethodBase.GetCurrentMethod().Name, e.Message);
throw;
}
Thread.Sleep(RETRY_INTERVAL);
}
}
try {
// If the config file is not empty, get the config info.
if (this.FileStreamInfo.Length != 0)
{
var dcs = new DataContractSerializer(this.GetType());
config = (ConfigManagerBase)dcs.ReadObject(this.FileStreamInfo);
}
this.SetEntity(config);
} catch (Exception e) {
// The config file closed because failed to get the config info.
ODLVSEMETW.EventWriteConfigManagerFileIOError(MethodBase.GetCurrentMethod().Name, e.Message);
this.FileStreamInfo.Close();
throw;
}
}
