feat: Create pod manager for generating dynamic pods

src/pods/ConfigPodManager.ts

@@ -0,0 +1,58 @@
+import type { ResourceIdentifier } from '../ldp/representation/ResourceIdentifier';
+import { getLoggerFor } from '../logging/LogUtil';
+import type { KeyValueStorage } from '../storage/keyvalue/KeyValueStorage';
+import type { ResourceStore } from '../storage/ResourceStore';
+import { addGeneratedResources } from './generate/GenerateUtil';
+import type { IdentifierGenerator } from './generate/IdentifierGenerator';
+import type { PodGenerator } from './generate/PodGenerator';
+import type { ResourcesGenerator } from './generate/ResourcesGenerator';
+import type { PodManager } from './PodManager';
+import type { PodSettings } from './settings/PodSettings';
+
+/**
+ * Pod manager that creates a store for the pod with a {@link PodGenerator}
+ * and fills it with resources from a {@link ResourcesGenerator}.
+ *
+ * Part of the dynamic pod creation.
+ *  1. Calls a PodGenerator to instantiate a new resource store for the pod.
+ *  2. Generates the pod resources based on the templates as usual.
+ *  3. Adds the created pod to the routing storage, which is used for linking pod identifiers to their resource stores.
+ *
+ * @see {@link TemplatedPodGenerator}, {@link ConfigPodInitializer}, {@link BaseUrlRouterRule}
+ */
+export class ConfigPodManager implements PodManager {
+  protected readonly logger = getLoggerFor(this);
+  private readonly idGenerator: IdentifierGenerator;
+  private readonly podGenerator: PodGenerator;
+  private readonly routingStorage: KeyValueStorage<ResourceIdentifier, ResourceStore>;
+  private readonly resourcesGenerator: ResourcesGenerator;
+
+  /**
+   * @param idGenerator - Generator for the pod identifiers.
+   * @param podGenerator - Generator for the pod stores.
+   * @param resourcesGenerator - Generator for the pod resources.
+   * @param routingStorage - Where to store the generated pods so they can be routed to.
+   */
+  public constructor(idGenerator: IdentifierGenerator, podGenerator: PodGenerator,
+    resourcesGenerator: ResourcesGenerator, routingStorage: KeyValueStorage<ResourceIdentifier, ResourceStore>) {
+    this.idGenerator = idGenerator;
+    this.podGenerator = podGenerator;
+    this.routingStorage = routingStorage;
+    this.resourcesGenerator = resourcesGenerator;
+  }
+
+  public async createPod(settings: PodSettings): Promise<ResourceIdentifier> {
+    const identifier = this.idGenerator.generate(settings.login);
+    this.logger.info(`Creating pod ${identifier.path}`);
+
+    // Will error in case there already is a store for the given identifier
+    const store = await this.podGenerator.generate(identifier, settings);
+
+    const count = await addGeneratedResources(identifier, settings, this.resourcesGenerator, store);
+    this.logger.info(`Added ${count} resources to ${identifier.path}`);
+
+    await this.routingStorage.set(identifier, store);
+
+    return identifier;
+  }
+}