feat: add services package

packages/services/src/Domain/Internal/InternalEventBusInterface.ts

@@ -0,0 +1,28 @@
+import { InternalEventInterface } from './InternalEventInterface'
+import { InternalEventType } from './InternalEventType'
+import { InternalEventHandlerInterface } from './InternalEventHandlerInterface'
+import { InternalEventPublishStrategy } from '..'
+
+export interface InternalEventBusInterface {
+  /**
+   * Associate an event handler with a certain event type
+   * @param handler event handler instance
+   * @param eventType event type to associate with
+   */
+  addEventHandler(handler: InternalEventHandlerInterface, eventType: InternalEventType): void
+  /**
+   * Asynchronously publish an event for handling
+   * @param event internal event object
+   */
+  publish(event: InternalEventInterface): void
+  /**
+   * Synchronously publish an event for handling.
+   * This will await for all handlers to finish processing the event.
+   * @param event internal event object
+   * @param strategy strategy with which the handlers will process the event.
+   * Either all handlers will start at once or they will do it sequentially.
+   */
+  publishSync(event: InternalEventInterface, strategy: InternalEventPublishStrategy): Promise<void>
+
+  deinit(): void
+}