Henara.Grpc.Client.Dakota

gRPC client library for the Dakota pipeline gateway and reporting service. Usable from any .NET host (ASP.NET Core, WinForms, MAUI, console). Authentication is supplied by an ICallTokenProvider; the Dakota clients carry no static API token.

Environment variables

Both are validated at registration and throw immediately if missing/invalid.

DI setup — native client (WinForms / MAUI)

The native app performs an interactive Keycloak login (Authorization Code + PKCE in a webview) against the public client henara-main-sso, then hands the resulting tokens to the provider.

services.AddNativeKeycloakAuth(o =>
{
    o.TokenEndpoint = "https://auth.praxx.me/realms/henara/protocol/openid-connect/token";
    o.ClientId      = "henara-main-sso";
});
services.AddDakotaExternalGrpcClients(); // URLs from env vars above

// after the webview login completes:
var auth = provider.GetRequiredService<KeycloakRefreshingTokenProvider>();
auth.Initialize(accessToken, refreshToken, expiresInSeconds); // tokens from the login response

The provider refreshes the access token automatically before it expires (rotating the refresh token). If the refresh fails, the next call throws — re-run the interactive login and call Initialize(...) again.

DI setup — inside our stack

Register any ICallTokenProvider that yields a valid Keycloak bearer (e.g. the Blazor frontend's KeycloakUserCallTokenProvider), then the clients:

services.AddScoped<ICallTokenProvider, KeycloakUserCallTokenProvider>();
services.AddDakotaExternalGrpcClients();

Example calls

var reporter = provider.GetRequiredService<IDakotaReporterClient>();

await foreach (var p in reporter.GetDakotaStati(new DakotaFilter { CustomerId = new MatchesIntFilterDto(20130000) }))
    Console.WriteLine($"{p.CreatedAt:o} {p.ReceiverIk} {p.FileName}");

var (rows, total) = await reporter.GetFilesPaged(page: 0, pageSize: 100, search: "");

var gateway = provider.GetRequiredService<IDakotaGatewayClient>();
await foreach (var r in gateway.DispatchDakotaProcess(pairs))
    Console.WriteLine(r.IsDispatched ? r.PipelineId.ToString() : r.Message);

The reporting service scopes all results to the caller's customer id(s); Henara admins see everything.