Migrate knowledge core service to ref-backed Effect state

ts/packages/flow/src/__tests__/knowledge-core-service.test.ts

@@ -0,0 +1,192 @@
+import {mkdtemp, rm} from "node:fs/promises";
+import {tmpdir} from "node:os";
+import {join} from "node:path";
+import {Effect, SynchronizedRef} from "effect";
+import {describe, expect, it} from "vitest";
+import {
+  topics,
+  type BackendConsumer,
+  type BackendProducer,
+  type CreateConsumerOptions,
+  type CreateProducerOptions,
+  type KnowledgeRequest,
+  type KnowledgeResponse,
+  type Message,
+  type PubSubBackend,
+  type Triple,
+} from "@trustgraph/base";
+import {makeKnowledgeCoreService} from "../cores/service.js";
+
+class NoopPubSub implements PubSubBackend {
+  readonly sentByTopic = new Map<string, Array<unknown>>();
+
+  async createProducer<T>(options: CreateProducerOptions<T>): Promise<BackendProducer<T>> {
+    return {
+      send: async (message) => {
+        const sent = this.sentByTopic.get(options.topic) ?? [];
+        sent.push(message);
+        this.sentByTopic.set(options.topic, sent);
+      },
+      flush: async () => undefined,
+      close: async () => undefined,
+    };
+  }
+
+  async createConsumer<T>(_options: CreateConsumerOptions): Promise<BackendConsumer<T>> {
+    return {
+      receive: async () => null,
+      acknowledge: async (_message: Message<T>) => undefined,
+      negativeAcknowledge: async (_message: Message<T>) => undefined,
+      unsubscribe: async () => undefined,
+      close: async () => undefined,
+    };
+  }
+
+  async close(): Promise<void> {}
+}
+
+const sampleTriple: Triple = {
+  s: {type: "IRI", iri: "https://example.test/a"},
+  p: {type: "IRI", iri: "https://example.test/related"},
+  o: {type: "LITERAL", value: "alpha"},
+};
+
+const makeService = (dataDir: string, backend: PubSubBackend = new NoopPubSub()) =>
+  makeKnowledgeCoreService({
+    id: "knowledge-test",
+    manageProcessSignals: false,
+    pubsub: backend,
+    dataDir,
+  });
+
+const seedResponseProducer = async (
+  backend: NoopPubSub,
+  service: ReturnType<typeof makeKnowledgeCoreService>,
+) => {
+  const responseProducer = await backend.createProducer<KnowledgeResponse>({
+    topic: topics.knowledgeResponse,
+  });
+  await Effect.runPromise(
+    SynchronizedRef.update(service.state, (state) => ({
+      ...state,
+      responseProducer,
+    })),
+  );
+};
+
+describe("KnowledgeCoreService operations", () => {
+  it("stores knowledge cores through ref-backed state and preserves graph embedding aliases", async () => {
+    const dir = await mkdtemp(join(tmpdir(), "trustgraph-knowledge-service-"));
+    const backend = new NoopPubSub();
+    const service = makeService(dir, backend);
+    await seedResponseProducer(backend, service);
+
+    const request: KnowledgeRequest = {
+      operation: "put-kg-core",
+      user: "alice",
+      id: "core-a",
+      triples: [sampleTriple],
+      "graph-embeddings": [
+        {
+          entity: {type: "IRI", iri: "https://example.test/a"},
+          vectors: [[1, 2, 3]],
+        },
+      ],
+    };
+
+    await service.putKgCore(request, "put-1");
+    const state = await Effect.runPromise(SynchronizedRef.get(service.state));
+    const core = state.kgCores.get("alice:core-a");
+
+    await service.getKgCore({
+      operation: "get-kg-core",
+      user: "alice",
+      id: "core-a",
+    }, "get-1");
+    await rm(dir, {recursive: true, force: true});
+
+    expect(core?.triples).toEqual([sampleTriple]);
+    expect(core?.graphEmbeddings).toEqual([
+      {
+        entity: {type: "IRI", iri: "https://example.test/a"},
+        vectors: [[1, 2, 3]],
+      },
+    ]);
+    expect(backend.sentByTopic.get(topics.knowledgeResponse)).toEqual([
+      {},
+      {
+        triples: [sampleTriple],
+        eos: false,
+      },
+      {
+        graphEmbeddings: [
+          {
+            entity: {type: "IRI", iri: "https://example.test/a"},
+            vectors: [[1, 2, 3]],
+          },
+        ],
+        "graph-embeddings": [
+          {
+            entity: {type: "IRI", iri: "https://example.test/a"},
+            vectors: [[1, 2, 3]],
+          },
+        ],
+        eos: true,
+      },
+    ]);
+  });
+
+  it("serializes concurrent mutations through ref-backed maps", async () => {
+    const dir = await mkdtemp(join(tmpdir(), "trustgraph-knowledge-service-"));
+    const backend = new NoopPubSub();
+    const service = makeService(dir, backend);
+    await seedResponseProducer(backend, service);
+
+    await Promise.all([
+      service.putKgCore({
+        operation: "put-kg-core",
+        user: "alice",
+        id: "core-b",
+        triples: [sampleTriple],
+      }, "put-a"),
+      service.putKgCore({
+        operation: "put-kg-core",
+        user: "alice",
+        id: "core-b",
+        triples: [
+          {
+            s: {type: "IRI", iri: "https://example.test/b"},
+            p: {type: "IRI", iri: "https://example.test/related"},
+            o: {type: "LITERAL", value: "beta"},
+          },
+        ],
+      }, "put-b"),
+    ]);
+
+    const state = await Effect.runPromise(SynchronizedRef.get(service.state));
+    await rm(dir, {recursive: true, force: true});
+
+    expect(state.kgCores.get("alice:core-b")?.triples).toHaveLength(2);
+  });
+
+  it("loads the legacy persisted knowledge shape with schema decoding", async () => {
+    const dir = await mkdtemp(join(tmpdir(), "trustgraph-knowledge-service-"));
+    const persistPath = join(dir, "knowledge-state.json");
+    await Bun.write(
+      persistPath,
+      JSON.stringify({
+        "alice:legacy": {
+          triples: [sampleTriple],
+          graphEmbeddings: [],
+        },
+      }),
+    );
+    const service = makeService(dir);
+
+    await service.loadFromDisk();
+    const state = await Effect.runPromise(SynchronizedRef.get(service.state));
+    await rm(dir, {recursive: true, force: true});
+
+    expect(state.kgCores.get("alice:legacy")?.triples).toEqual([sampleTriple]);
+  });
+});