/// <summary>
/// Gets the details for all applications or for a specific application created in the system.
/// Also takes in timeout interval, which is the maximum of time the system will allow this operation to continue before returning.
/// </summary>
public async Task <IEnumerable <ApplicationWrapper> > GetApplicationListAsync(Uri applicationNameFilter, TimeSpan timeout, CancellationToken cancellationToken)
{
var applicationList = new List <ApplicationWrapper>();
ApplicationList previousResult = null;
// Set up the counter that record the time lapse.
var stopWatch = ValueStopwatch.StartNew();
do
{
cancellationToken.ThrowIfCancellationRequested();
var remaining = timeout - stopWatch.Elapsed;
if (remaining.Ticks < 0)
{
// If the passing time is longer than the timeout duration.
throw new TimeoutException($"Unable to enumerate all application pages in the allotted time budget of {timeout.TotalSeconds} seconds");
}
previousResult = await ExceptionsHelper.TranslateCancellations(
() => _queryClient.GetApplicationListAsync(
applicationNameFilter: applicationNameFilter,
continuationToken: previousResult?.ContinuationToken,
timeout: remaining,
cancellationToken: cancellationToken),
cancellationToken);
applicationList.AddRange(previousResult.Select(MapApp));
}while (!string.IsNullOrEmpty(previousResult?.ContinuationToken));
return(applicationList);
ApplicationWrapper MapApp(Application app) =>
new ApplicationWrapper
{
ApplicationName = app.ApplicationName,
ApplicationTypeName = app.ApplicationTypeName,
ApplicationTypeVersion = app.ApplicationTypeVersion,
ApplicationParameters = MapAppParameters(app),
};
IDictionary <string, string> MapAppParameters(Application app)
{
// NOTE: App Params in Service Fabric are case insensitive (verified on version 7.0.457.9590).
// Since this is not documented behavior, the code below tries to play it safe by ignoring
// duplicated app params instead of throwing and preventing such service from working at all
// behind the Proxy.
var result = new Dictionary <string, string>(StringComparer.OrdinalIgnoreCase);
foreach (var param in app.ApplicationParameters)
{
if (!result.TryAdd(param.Name, param.Value))
{
Log.DuplicateAppParameter(_logger, param.Name, app.ApplicationName);
}
}
return(result);
}
}