Google Cloud Pub/Sub (TsgcHTTPGoogleCloud_PubSub_Client) — sgcWebSockets

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TsgcHTTPGoogleCloud_PubSub_Client

Google Cloud Pub/Sub REST client — create topics, publish messages, pull from subscriptions, acknowledge or modify ack deadlines from a typed Delphi component.

Komponentenklasse

TsgcHTTPGoogleCloud_PubSub_Client

Protokoll

Pub/Sub REST API

Plattformen

Windows, macOS, Linux, iOS, Android

Edition

Standard / Professional / Enterprise

SCHNELLSTART

Load Service-Account, publish, pull

Load your service-account JSON, setze the project id, then call Publish to send a message and Pull to consume from a subscription.

uses
  sgcHTTP;

var
  PubSub: TsgcHTTPGoogleCloud_PubSub_Client;
begin
  PubSub := TsgcHTTPGoogleCloud_PubSub_Client.Create(nil);
  PubSub.GoogleCloudOptions.ServiceAccountJSON.LoadFromFile('service-account.json');

  // veröffentlichen
  PubSub.Publish('projects/your-project/topics/topic-id',
    '{"event":"order_created","id":42}');

  // abrufen
  Memo1.Text := PubSub.Pull('projects/your-project/subscriptions/sub-id', 10);
end;

// uses: sgcHTTP
TsgcHTTPGoogleCloud_PubSub_Client *PubSub = new TsgcHTTPGoogleCloud_PubSub_Client(this);
PubSub->GoogleCloudOptions->ServiceAccountJSON->LoadFromFile("service-account.json");

PubSub->Publish("projects/p/topics/t", payload);
Memo1->Text = PubSub->Pull("projects/p/subscriptions/s", 10);

TECHNISCHE FUNKTIONEN

Was steckt drin

Wraps the Pub/Sub REST surface mit dem standard Google service-account auth flow.

Topic management

CreateTopic, DeleteTopic, GetTopic, ListTopics hit the /projects/<id>/topics endpoint family.

Publish

Publish sends one or more PubsubMessage entries with optional attributes and ordering keys, returning the assigned messageIds.

Pull / Acknowledge

Pull(subscription, maxMessages) returns received messages with their ackId; Acknowledge(subscription, ackIds) finalises them, ModifyAckDeadline extends processing time.

Service-account JWT

Same auth flow as the FCM and Calendar siblings — loads the JSON key, signs an RS256 JWT, exchanges for an OAuth token, refreshes wenn needed.

Subscription management

CreateSubscription, DeleteSubscription, UpdateSubscription, ListSubscriptions manage the subscription side of Pub/Sub.

Push or pull

Pull subscriptions are read with Pull; push subscriptions are configured to call your endpoint — typically a TsgcWebSocketHTTPServer instance behind a public URL.

STANDARDS

Spezifikationen und Referenzen

Maßgebliche Quellen für die API, die diese Komponente implementiert.

RESSOURCEN

Dokumentation & Demos

Springe direkt zur Komponentenreferenz, lade das einsatzbereite Demo-Projekt herunter und teste die Testversion.

	Online-Hilfe — Google Pub/Sub Client Vollständige Eigenschaften-, Methoden- und Ereignisreferenz für diese Komponente.	Öffnen
	Demo Project — Demos\20.HTTP_Protocol\03.Google Einsatzbereites Beispielprojekt. Im sgcWebSockets-Paket enthalten — lade unten die Testversion herunter.	Öffnen
	Technisches Dokument (PDF) Funktionen, Schnellstart, Codebeispiele für Delphi & C++ Builder und Primärquellenreferenzen — nur für diese Komponente.	Öffnen
	Benutzerhandbuch (PDF) Umfassendes Handbuch zu jeder Komponente der Bibliothek.	Öffnen

Google Cloud Pub/Sub