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fix(memory): support embedding providers without encoding format

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This commit is contained in:
Peter Steinberger
2026-04-28 01:12:27 +01:00
parent 100c595fbc
commit 1fde7dbc0e
4 changed files with 134 additions and 22 deletions
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83
extensions/memory-lancedb/index.test.ts
View File

@@ -8,11 +8,13 @@
* - Auto-capture filtering
*/
import { Buffer } from "node:buffer";
import { describe, test, expect, vi } from "vitest";
import memoryPlugin, {
detectCategory,
formatRelevantMemoriesContext,
looksLikePromptInjection,
normalizeEmbeddingVector,
normalizeRecallQuery,
shouldCapture,
} from "./index.js";
@@ -57,6 +59,10 @@ function createMockModule(): LanceDbModule {
} as unknown as LanceDbModule;
}
function invokeEmbeddingCreate(mock: ReturnType<typeof vi.fn>, body: unknown) {
return (mock as unknown as (body: unknown) => unknown)(body);
}
function createRuntimeLoader(
overrides: {
env?: NodeJS.ProcessEnv;
@@ -351,7 +357,9 @@ describe("memory plugin e2e", () => {
}));
vi.doMock("openai", () => ({
default: class MockOpenAI {
embeddings = { create: embeddingsCreate };
post = vi.fn((_path: string, opts: { body?: unknown }) =>
invokeEmbeddingCreate(embeddingsCreate, opts.body),
);
},
}));
vi.doMock("./lancedb-runtime.js", () => ({
@@ -417,7 +425,6 @@ describe("memory plugin e2e", () => {
expect(embeddingsCreate).toHaveBeenCalledWith({
model: "text-embedding-3-small",
input: expectedRecallQuery,
encoding_format: "float",
});
expect(expectedRecallQuery).toHaveLength(120);
expect(vectorSearch).toHaveBeenCalledWith([0.1, 0.2, 0.3]);
@@ -491,7 +498,9 @@ describe("memory plugin e2e", () => {
}));
vi.doMock("openai", () => ({
default: class MockOpenAI {
embeddings = { create: embeddingsCreate };
post = vi.fn((_path: string, opts: { body?: unknown }) =>
invokeEmbeddingCreate(embeddingsCreate, opts.body),
);
},
}));
vi.doMock("./lancedb-runtime.js", () => ({
@@ -568,7 +577,6 @@ describe("memory plugin e2e", () => {
expect(embeddingsCreate).toHaveBeenCalledWith({
model: "text-embedding-3-small",
input: "what editor should i use?",
encoding_format: "float",
});
expect(result).toMatchObject({
prependContext: expect.stringContaining("I prefer Helix for editing code."),
@@ -622,7 +630,9 @@ describe("memory plugin e2e", () => {
}));
vi.doMock("openai", () => ({
default: class MockOpenAI {
embeddings = { create: embeddingsCreate };
post = vi.fn((_path: string, opts: { body?: unknown }) =>
invokeEmbeddingCreate(embeddingsCreate, opts.body),
);
},
}));
vi.doMock("./lancedb-runtime.js", () => ({
@@ -745,7 +755,9 @@ describe("memory plugin e2e", () => {
}));
vi.doMock("openai", () => ({
default: class MockOpenAI {
embeddings = { create: embeddingsCreate };
post = vi.fn((_path: string, opts: { body?: unknown }) =>
invokeEmbeddingCreate(embeddingsCreate, opts.body),
);
},
}));
vi.doMock("./lancedb-runtime.js", () => ({
@@ -844,7 +856,9 @@ describe("memory plugin e2e", () => {
}));
vi.doMock("openai", () => ({
default: class MockOpenAI {
embeddings = { create: embeddingsCreate };
post = vi.fn((_path: string, opts: { body?: unknown }) =>
invokeEmbeddingCreate(embeddingsCreate, opts.body),
);
},
}));
vi.doMock("./lancedb-runtime.js", () => ({
@@ -905,7 +919,6 @@ describe("memory plugin e2e", () => {
expect(embeddingsCreate).toHaveBeenCalledWith({
model: "text-embedding-3-small",
input: "I prefer Helix for editing code every day.",
encoding_format: "float",
});
expect(vectorSearch).toHaveBeenCalledTimes(1);
expect(add).toHaveBeenCalledTimes(1);
@@ -970,7 +983,9 @@ describe("memory plugin e2e", () => {
}));
vi.doMock("openai", () => ({
default: class MockOpenAI {
embeddings = { create: embeddingsCreate };
post = vi.fn((_path: string, opts: { body?: unknown }) =>
invokeEmbeddingCreate(embeddingsCreate, opts.body),
);
},
}));
vi.doMock("./lancedb-runtime.js", () => ({
@@ -1047,7 +1062,6 @@ describe("memory plugin e2e", () => {
expect(embeddingsCreate).toHaveBeenCalledWith({
model: "text-embedding-3-small",
input: "I prefer Helix for editing code every day.",
encoding_format: "float",
});
expect(add).toHaveBeenCalledWith([
expect.objectContaining({
@@ -1106,7 +1120,9 @@ describe("memory plugin e2e", () => {
}));
vi.doMock("openai", () => ({
default: class MockOpenAI {
embeddings = { create: embeddingsCreate };
post = vi.fn((_path: string, opts: { body?: unknown }) =>
invokeEmbeddingCreate(embeddingsCreate, opts.body),
);
},
}));
vi.doMock("./lancedb-runtime.js", () => ({
@@ -1231,7 +1247,9 @@ describe("memory plugin e2e", () => {
}));
vi.doMock("openai", () => ({
default: class MockOpenAI {
embeddings = { create: embeddingsCreate };
post = vi.fn((_path: string, opts: { body?: unknown }) =>
invokeEmbeddingCreate(embeddingsCreate, opts.body),
);
},
}));
vi.doMock("./lancedb-runtime.js", () => ({
@@ -1336,7 +1354,9 @@ describe("memory plugin e2e", () => {
}));
vi.doMock("openai", () => ({
default: class MockOpenAI {
embeddings = { create: embeddingsCreate };
post = vi.fn((_path: string, opts: { body?: unknown }) =>
invokeEmbeddingCreate(embeddingsCreate, opts.body),
);
},
}));
vi.doMock("./lancedb-runtime.js", () => ({
@@ -1425,12 +1445,10 @@ describe("memory plugin e2e", () => {
expect(harness.embeddingsCreate).toHaveBeenNthCalledWith(1, {
model: "text-embedding-3-small",
input: "I prefer Helix for editing code every day.",
encoding_format: "float",
});
expect(harness.embeddingsCreate).toHaveBeenNthCalledWith(2, {
model: "text-embedding-3-small",
input: "I prefer Fish for shell commands every day.",
encoding_format: "float",
});
expect(harness.add).toHaveBeenCalledTimes(2);
} finally {
@@ -1493,7 +1511,6 @@ describe("memory plugin e2e", () => {
expect(harness.embeddingsCreate).toHaveBeenNthCalledWith(3, {
model: "text-embedding-3-small",
input: "I prefer Deno for small scripts every day.",
encoding_format: "float",
});
expect(harness.add).toHaveBeenCalledTimes(3);
} finally {
@@ -1555,7 +1572,9 @@ describe("memory plugin e2e", () => {
}));
vi.doMock("openai", () => ({
default: class MockOpenAI {
embeddings = { create: embeddingsCreate };
post = vi.fn((_path: string, opts: { body?: unknown }) =>
invokeEmbeddingCreate(embeddingsCreate, opts.body),
);
},
}));
vi.doMock("./lancedb-runtime.js", () => ({
@@ -1611,7 +1630,6 @@ describe("memory plugin e2e", () => {
expect(embeddingsCreate).toHaveBeenCalledWith({
model: "text-embedding-3-small",
input: "hello dimensions",
encoding_format: "float",
dimensions: 1024,
});
} finally {
@@ -1651,7 +1669,9 @@ describe("memory plugin e2e", () => {
}));
vi.doMock("openai", () => ({
default: class MockOpenAI {
embeddings = { create: embeddingsCreate };
post = vi.fn((_path: string, opts: { body?: unknown }) =>
invokeEmbeddingCreate(embeddingsCreate, opts.body),
);
},
}));
vi.doMock("./lancedb-runtime.js", () => ({
@@ -1833,6 +1853,31 @@ describe("memory plugin e2e", () => {
expect(normalizeRecallQuery(`look up ${"x".repeat(200)}`, 120)).toHaveLength(120);
});
test("normalizeEmbeddingVector accepts float arrays and base64 float32 responses", async () => {
expect(normalizeEmbeddingVector([0.1, 0.2, 0.3])).toEqual([0.1, 0.2, 0.3]);
const bytes = Buffer.alloc(2 * Float32Array.BYTES_PER_ELEMENT);
const view = new DataView(bytes.buffer, bytes.byteOffset, bytes.byteLength);
view.setFloat32(0, 1.25, true);
view.setFloat32(Float32Array.BYTES_PER_ELEMENT, -2.5, true);
const decoded = normalizeEmbeddingVector(bytes.toString("base64"));
expect(decoded[0]).toBeCloseTo(1.25);
expect(decoded[1]).toBeCloseTo(-2.5);
});
test("normalizeEmbeddingVector rejects malformed embedding payloads", async () => {
expect(() => normalizeEmbeddingVector([0.1, Number.NaN])).toThrow(
"Embedding response contains non-numeric values",
);
expect(() => normalizeEmbeddingVector("abc")).toThrow(
"Base64 embedding response has invalid byte length",
);
expect(() => normalizeEmbeddingVector(undefined)).toThrow(
"Embedding response is missing a vector",
);
});
test("formatRelevantMemoriesContext escapes memory text and marks entries as untrusted", async () => {
const context = formatRelevantMemoriesContext([
{

42
extensions/memory-lancedb/index.ts
View File

@@ -6,6 +6,7 @@
* Provides seamless auto-recall and auto-capture via lifecycle hooks.
*/
import { Buffer } from "node:buffer";
import { randomUUID } from "node:crypto";
import type * as LanceDB from "@lancedb/lancedb";
import OpenAI from "openai";
@@ -270,17 +271,52 @@ class Embeddings {
const params: OpenAI.EmbeddingCreateParams = {
model: this.model,
input: text,
encoding_format: "float",
};
if (this.dimensions) {
params.dimensions = this.dimensions;
}
ensureGlobalUndiciEnvProxyDispatcher();
const response = await this.client.embeddings.create(params);
return response.data[0].embedding;
// The OpenAI SDK's embeddings helper injects encoding_format=base64 when
// omitted, then decodes the response. Several compatible providers either
// reject encoding_format or always return float arrays, so use the generic
// transport and normalize the response ourselves.
const response = await this.client.post<EmbeddingCreateResponse>("/embeddings", {
body: params,
});
return normalizeEmbeddingVector(response.data?.[0]?.embedding);
}
}
type EmbeddingCreateResponse = {
data?: Array<{
embedding?: unknown;
}>;
};
export function normalizeEmbeddingVector(value: unknown): number[] {
if (Array.isArray(value)) {
if (!value.every((item) => typeof item === "number" && Number.isFinite(item))) {
throw new Error("Embedding response contains non-numeric values");
}
return value;
}
if (typeof value === "string") {
const bytes = Buffer.from(value, "base64");
if (bytes.byteLength % Float32Array.BYTES_PER_ELEMENT !== 0) {
throw new Error("Base64 embedding response has invalid byte length");
}
const view = new DataView(bytes.buffer, bytes.byteOffset, bytes.byteLength);
const floats: number[] = [];
for (let offset = 0; offset < bytes.byteLength; offset += Float32Array.BYTES_PER_ELEMENT) {
floats.push(view.getFloat32(offset, true));
}
return floats;
}
throw new Error("Embedding response is missing a vector");
}
// ============================================================================
// Rule-based capture filter
// ============================================================================