private async Task ReserveAppAsync(Guid appId)
{
if (!(isReserved = await appsByNameIndex.ReserveAppAsync(appId, appName)))
{
throw new BackupRestoreException("The app id or name is not available.");
}
}
public async Task Should_add_app_to_index_on_create()
{
A.CallTo(() => index.ReserveAppAsync(appId, "my-app"))
.Returns(true);
var context =
new CommandContext(new CreateApp {
AppId = appId, Name = "my-app"
}, commandBus)
.Complete();
await sut.HandleAsync(context);
A.CallTo(() => index.ReserveAppAsync(appId, "my-app"))
.MustHaveHappened();
A.CallTo(() => index.AddAppAsync(appId, "my-app"))
.MustHaveHappened();
A.CallTo(() => index.RemoveReservationAsync(appId, "my-app"))
.MustHaveHappened();
}
public async Task HandleAsync(CommandContext context, Func <Task> next)
{
var createApp = context.Command as CreateApp;
var isReserved = false;
try
{
if (createApp != null)
{
isReserved = await index.ReserveAppAsync(createApp.AppId, createApp.Name);
if (!isReserved)
{
var error = new ValidationError("An app with the same name already exists.", nameof(createApp.Name));
throw new ValidationException("Cannot create app.", error);
}
}
await next();
if (context.IsCompleted)
{
if (createApp != null)
{
await index.AddAppAsync(createApp.AppId, createApp.Name);
}
else if (context.Command is ArchiveApp archiveApp)
{
await index.RemoveAppAsync(archiveApp.AppId);
}
}
}
finally
{
if (isReserved)
{
await index.RemoveReservationAsync(createApp.AppId, createApp.Name);
}
}
}