private CompareExchangeValue <string>?GetEmailReservation(string email)
{
var key = Conventions.CompareExchangeKeyFor(email);
var getReservation = new GetCompareExchangeValueOperation <string>(key);
return(docStore.Operations.Send(getReservation));
}
/// <inheritdoc />
public async Task <TUser> FindByEmailAsync(string normalizedEmail, CancellationToken cancellationToken)
{
var getReq = new GetCompareExchangeValueOperation <string>(GetCompareExchangeKeyFromEmail(normalizedEmail));
var idResult = await DbSession.Advanced.DocumentStore.Operations.SendAsync(getReq, token: cancellationToken);
if (idResult == null)
{
#pragma warning disable 8603
return(null);
#pragma warning restore 8603
}
return(await DbSession.LoadAsync <TUser>(idResult.Value, cancellationToken));
}
public IActionResult Run(RunParams runParams)
{
string cmpXchgKey = runParams.CmpXchgKey ?? "*****@*****.**";
string cmpXchgValue = runParams.CmpXchgValue ?? "employee/1-A";
string result = null;
#region Demo
#region Step_1
var putCmpXchgOperation =
new PutCompareExchangeValueOperation <string>(cmpXchgKey, cmpXchgValue, 0);
CompareExchangeResult <string> putCmpXchgResult =
DocumentStoreHolder.Store.Operations.Send(putCmpXchgOperation);
#endregion
#region Step_2
var success = putCmpXchgResult.Successful;
var putValue = putCmpXchgResult.Value;
var putVersion = putCmpXchgResult.Index;
if (success == false)
{
result = "Key already exists";
}
#endregion
#region Step_3
var getCmpXchgOperation =
new GetCompareExchangeValueOperation <string>(cmpXchgKey);
CompareExchangeValue <string> getCmpXchgResult =
DocumentStoreHolder.Store.Operations.Send(getCmpXchgOperation);
#endregion
#region Step_4
var key = getCmpXchgResult.Key;
var currentValue = getCmpXchgResult.Value;
var currentValueVersion = getCmpXchgResult.Index;
var currentMetadata = getCmpXchgResult.Metadata;
#endregion
#endregion
result = result ?? $"Created a new Compare-Exchange Key: {key}, Value: {currentValue}, Value Version: {currentValueVersion}";
return(Ok(result));
}
/// <inheritdoc />
public async Task <TUser> FindByNameAsync(string normalizedUserName, CancellationToken cancellationToken)
{
ThrowIfDisposedOrCancelled(cancellationToken);
if (string.IsNullOrEmpty(normalizedUserName))
{
throw new ArgumentNullException(nameof(normalizedUserName));
}
var compareExchangeKey = GetCompareExchangeKeyFromEmail(normalizedUserName);
var getEmailReservationOperation = new GetCompareExchangeValueOperation <string>(compareExchangeKey);
var emailReservationResultOrNull = await DbSession.Advanced.DocumentStore.Operations.SendAsync(getEmailReservationOperation);
var userId = emailReservationResultOrNull?.Value;
if (string.IsNullOrEmpty(userId))
{
return(null);
}
cancellationToken.ThrowIfCancellationRequested();
return(await FindByIdAsync(userId, cancellationToken));
}