public async Task <bool> MountLU(string RegistrarDeviceId, string LUID)
{
var myDictionary = await this.StateManager.GetOrAddAsync <IReliableDictionary <string, string> >(RegistrarDeviceId);
bool fGotRegInfo = false;
using (var tx = this.StateManager.CreateTransaction())
{
// Get the current registration info
Microsoft.ServiceFabric.Data.ConditionalValue <string> registrationInfo = await myDictionary.TryGetValueAsync(tx, LUID);
fGotRegInfo = registrationInfo.HasValue;
if (fGotRegInfo)
{
string regInfo = registrationInfo.Value;
// Get the actual registration info
string[] arrData = regInfo.Split(new char[] { '_' });
string updatedRegInfo = String.Format("{0}_{1}_{2}", arrData[0], arrData[1], "1");
await myDictionary.SetAsync(tx, LUID, updatedRegInfo);
await tx.CommitAsync();
}
}
return(fGotRegInfo);
}
public async Task <bool> UnregisterLU(string RegistrarDeviceId, string LUID)
{
var myDictionary = await this.StateManager.GetOrAddAsync <IReliableDictionary <string, string> >(RegistrarDeviceId);
bool fUnregistered = false;
using (var tx = this.StateManager.CreateTransaction())
{
// First, delete the dictionary containing the disk blocks
Microsoft.ServiceFabric.Data.ConditionalValue <IReliableDictionary <string, byte[]> > dictDisk = await this.StateManager.TryGetAsync <IReliableDictionary <string, byte[]> >(LUID);
if (dictDisk.HasValue)
{
await this.StateManager.RemoveAsync(tx, LUID);
}
// Next, remove the entry from the registrar dictionary
Microsoft.ServiceFabric.Data.ConditionalValue <string> registrationInfo = await myDictionary.TryRemoveAsync(tx, LUID);
fUnregistered = registrationInfo.HasValue;
// Abort the transaction if we were unable to unregister the disk for some reason.
if (!fUnregistered)
{
tx.Abort();
}
else
{
// If an exception is thrown before calling CommitAsync, the transaction aborts, all changes are
// discarded, and nothing is saved to the secondary replicas.
await tx.CommitAsync();
}
}
return(fUnregistered);
}
