enhancement(extollo/extollo#2): add kernel module for parsing request body contents, uploading files

src/service/Files.ts

@@ -89,6 +89,23 @@ export class Files extends Unit {
         }
 
         await Promise.all(promises)
+
+        // Once they have initialized, register the DI token for the default filesystem
+        this.app().registerProducer(Filesystem, () => {
+            // This will throw FilesystemDoesNotExistError if no default filesystem was created
+            // Such behavior is desired as it is clearer than an invalid injection error, e.g.
+            return this.getFilesystem()
+        })
+
+        // If file uploads are enabled, ensure that the default upload prefix exists
+        if ( this.defaultFilesystem ) {
+            const upload = this.config.get('server.uploads', {})
+            if ( upload?.enable && upload?.filesystemPrefix ) {
+                await this.defaultFilesystem.mkdir({
+                    storePath: upload.filesystemPrefix,
+                })
+            }
+        }
     }
 
     async down() {

src/service/HTTPServer.ts

@@ -14,6 +14,7 @@ import {ExecuteResolvedRouteHandlerHTTPModule} from "../http/kernel/module/Execu
 import {error} from "../http/response/ErrorResponseFactory";
 import {ExecuteResolvedRoutePreflightHTTPModule} from "../http/kernel/module/ExecuteResolvedRoutePreflightHTTPModule";
 import {ExecuteResolvedRoutePostflightHTTPModule} from "../http/kernel/module/ExecuteResolvedRoutePostflightHTTPModule";
+import {ParseIncomingBodyHTTPModule} from "../http/kernel/module/ParseIncomingBodyHTTPModule";
 
 /**
  * Application unit that starts the HTTP/S server, creates Request and Response objects
@@ -42,6 +43,7 @@ export class HTTPServer extends Unit {
         ExecuteResolvedRouteHandlerHTTPModule.register(this.kernel)
         ExecuteResolvedRoutePreflightHTTPModule.register(this.kernel)
         ExecuteResolvedRoutePostflightHTTPModule.register(this.kernel)
+        ParseIncomingBodyHTTPModule.register(this.kernel)
 
         await new Promise<void>((res, rej) => {
             this.server = createServer(this.handler)