private static ListBackends GetListBackends()

in tools/code/extractor/Backend.cs [58:85]

• 24 lines of code
• 1 McCabe index (conditional complexity)

    private static ListBackends GetListBackends(IServiceProvider provider)
    {
        var findConfigurationNamesFactory = provider.GetRequiredService<FindConfigurationNamesFactory>();
        var serviceUri = provider.GetRequiredService<ManagementServiceUri>();
        var pipeline = provider.GetRequiredService<HttpPipeline>();

        var findConfigurationNames = findConfigurationNamesFactory.Create<BackendName>();

        return cancellationToken =>
            findConfigurationNames()
                .Map(names => listFromSet(names, cancellationToken))
                .IfNone(() => listAll(cancellationToken));

        IAsyncEnumerable<(BackendName, BackendDto)> listFromSet(IEnumerable<BackendName> names, CancellationToken cancellationToken) =>
            names.Select(name => BackendUri.From(name, serviceUri))
                 .ToAsyncEnumerable()
                 .Choose(async uri =>
                 {
                     var dtoOption = await uri.TryGetDto(pipeline, cancellationToken);
                     return dtoOption.Map(dto => (uri.Name, dto));
                 });

        IAsyncEnumerable<(BackendName, BackendDto)> listAll(CancellationToken cancellationToken)
        {
            var backendsUri = BackendsUri.From(serviceUri);
            return backendsUri.List(pipeline, cancellationToken);
        }
    }