feat(ama-sdk-core): abort requests by passing an abort signal in meta…

…data (AmadeusITGroup#1470)

## Proposed change

Adds the ability to abort requests in `@ama-sdk/core` (and any request
of an SDK generated by the Otter SDK generator) by passing an [abort
signal](https://developer.mozilla.org/en-US/docs/Web/API/AbortSignal) in
metadata. It is implemented both for the fetch and the angular client.

packages/@ama-sdk/core/src/clients/api-angular-client.ts

@@ -104,7 +104,9 @@ export class ApiAngularClient implements ApiClient {
 
       const asyncResponse = new Promise<HttpResponse<any>>((resolve, reject) => {
         let data: HttpResponse<any>;
-        this.options.httpClient.request(options.method, url, {
+        const metadataSignal = options.metadata?.signal;
+        metadataSignal?.throwIfAborted();
+        const subscription = this.options.httpClient.request(options.method, url, {
           ...options,
           observe: 'response',
           headers
@@ -113,6 +115,11 @@ export class ApiAngularClient implements ApiClient {
           error: (err) => reject(err),
           complete: () => resolve(data)
         });
+        metadataSignal?.throwIfAborted();
+        metadataSignal?.addEventListener('abort', () => {
+          subscription.unsubscribe();
+          reject(metadataSignal.reason);
+        });
       });
       response = await asyncResponse;
       root = response.body;

packages/@ama-sdk/core/src/clients/api-fetch-client.ts

@@ -114,10 +114,13 @@ export class ApiFetchClient implements ApiClient {
     // Execute call
     try {
 
+      const metadataSignal = options.metadata?.signal;
+      metadataSignal?.throwIfAborted();
+
       const controller = new AbortController();
-      if (controller) {
-        options.signal = controller.signal;
-      }
+      options.signal = controller.signal;
+      metadataSignal?.addEventListener('abort', () => controller.abort());
+
       const loadedPlugins: (PluginAsyncRunner<Response, FetchCall> & PluginAsyncStarter)[] = [];
       if (this.options.fetchPlugins) {
         loadedPlugins.push(...this.options.fetchPlugins.map((plugin) => plugin.load({url, options, fetchPlugins: loadedPlugins, controller, apiClient: this, logger: this.options.logger})));

packages/@ama-sdk/core/src/plugins/core/request-plugin.ts

@@ -33,6 +33,8 @@ export interface RequestMetadata<C extends string = string, A extends string = s
   headerContentType?: C;
   /** Force a MIME type to be used as Accept header */
   headerAccept?: A;
+  /** Signal to abort the request */
+  signal?: AbortSignal;
 }
 
 export interface RequestOptions extends RequestInit {