feat: establish standalone Device Core repository

packages/device-adapter-runtime/package.json

@@ -0,0 +1,15 @@
+{
+  "name": "@nodedc/device-adapter-runtime",
+  "version": "0.1.0",
+  "private": true,
+  "type": "module",
+  "exports": {
+    ".": "./src/index.mjs"
+  },
+  "scripts": {
+    "test": "node --test test/*.test.mjs"
+  },
+  "engines": {
+    "node": ">=20"
+  }
+}

packages/device-adapter-runtime/src/index.mjs

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+export const DEVICE_ADAPTER_CONTRACT_VERSION =
+  "nodedc.device-adapter.v1";
+
+const ADAPTER_REF_RE = /^[a-z][a-z0-9-]{1,62}$/;
+const PROFILE_REF_RE = /^[a-z][a-z0-9._-]{2,127}$/;
+const RUNTIME_PACKAGE_REF_RE = /^@[a-z0-9-]+\/[a-z0-9-]+$/;
+
+export function defineDeviceAdapter(input) {
+  assertPlainObject(input, "device_adapter");
+  if (input.contractVersion !== DEVICE_ADAPTER_CONTRACT_VERSION) {
+    throw new TypeError("device_adapter_contract_version_invalid");
+  }
+  const adapterRef = normalizeRef(
+    input.adapterRef,
+    ADAPTER_REF_RE,
+    "device_adapter_ref_invalid",
+  );
+  const runtimePackageRef = normalizeRef(
+    input.runtimePackageRef,
+    RUNTIME_PACKAGE_REF_RE,
+    "device_adapter_runtime_package_ref_invalid",
+  );
+  if (!Array.isArray(input.profiles) || input.profiles.length === 0) {
+    throw new TypeError("device_adapter_profiles_required");
+  }
+  const profiles = input.profiles.map((profile) =>
+    normalizeProfile(profile, adapterRef)
+  );
+  if (new Set(profiles.map((profile) => profile.profileRef)).size !== profiles.length) {
+    throw new TypeError("device_adapter_profile_duplicate");
+  }
+  if (typeof input.createSession !== "function") {
+    throw new TypeError("device_adapter_session_factory_required");
+  }
+
+  return deepFreeze({
+    contractVersion: DEVICE_ADAPTER_CONTRACT_VERSION,
+    adapterRef,
+    runtimePackageRef,
+    profiles,
+    createSession: input.createSession,
+  });
+}
+
+export function createDeviceAdapterRegistry({ adapters = [] } = {}) {
+  if (!Array.isArray(adapters)) {
+    throw new TypeError("device_adapter_registry_adapters_invalid");
+  }
+  const byAdapterRef = new Map();
+  const byProfileRef = new Map();
+  for (const adapter of adapters) {
+    const normalized = defineDeviceAdapter(adapter);
+    if (byAdapterRef.has(normalized.adapterRef)) {
+      throw new TypeError("device_adapter_registry_adapter_duplicate");
+    }
+    byAdapterRef.set(normalized.adapterRef, normalized);
+    for (const profile of normalized.profiles) {
+      if (byProfileRef.has(profile.profileRef)) {
+        throw new TypeError("device_adapter_registry_profile_duplicate");
+      }
+      byProfileRef.set(profile.profileRef, Object.freeze({
+        adapter: normalized,
+        profile,
+      }));
+    }
+  }
+
+  return Object.freeze({
+    adapterRefs: Object.freeze([...byAdapterRef.keys()].sort()),
+    profileRefs: Object.freeze([...byProfileRef.keys()].sort()),
+    getAdapter(adapterRef) {
+      const normalized = normalizeRef(
+        adapterRef,
+        ADAPTER_REF_RE,
+        "device_adapter_ref_invalid",
+      );
+      const adapter = byAdapterRef.get(normalized);
+      if (!adapter) throw new TypeError("device_adapter_not_allowlisted");
+      return adapter;
+    },
+    resolveProfile(profileRef) {
+      const normalized = normalizeRef(
+        profileRef,
+        PROFILE_REF_RE,
+        "device_adapter_profile_ref_invalid",
+      );
+      const registration = byProfileRef.get(normalized);
+      if (!registration) {
+        throw new TypeError("device_adapter_profile_not_allowlisted");
+      }
+      return registration;
+    },
+  });
+}
+
+export function assertDeviceAdapterSession(session) {
+  assertPlainObject(session, "device_adapter_session");
+  for (const method of [
+    "parseHeader",
+    "buildHeaderAcknowledgement",
+    "parseMessage",
+    "buildMessageAcknowledgement",
+  ]) {
+    if (typeof session[method] !== "function") {
+      throw new TypeError(`device_adapter_session_method_missing:${method}`);
+    }
+  }
+  return session;
+}
+
+function normalizeProfile(profile, adapterRef) {
+  assertPlainObject(profile, "device_adapter_profile");
+  const profileRef = normalizeRef(
+    profile.profileRef,
+    PROFILE_REF_RE,
+    "device_adapter_profile_ref_invalid",
+  );
+  if (profile.adapterRef != null && profile.adapterRef !== adapterRef) {
+    throw new TypeError("device_adapter_profile_adapter_mismatch");
+  }
+  const maxBufferedBytes = Number(profile?.framing?.maxBufferedBytes);
+  if (
+    !Number.isSafeInteger(maxBufferedBytes)
+    || maxBufferedBytes < 1024
+    || maxBufferedBytes > 256 * 1024
+  ) {
+    throw new TypeError("device_adapter_profile_buffer_limit_invalid");
+  }
+  return deepFreeze({ ...profile, profileRef, adapterRef });
+}
+
+function normalizeRef(value, pattern, errorCode) {
+  if (typeof value !== "string" || !pattern.test(value)) {
+    throw new TypeError(errorCode);
+  }
+  return value;
+}
+
+function assertPlainObject(value, label) {
+  if (!value || typeof value !== "object" || Array.isArray(value)) {
+    throw new TypeError(`${label}_invalid`);
+  }
+}
+
+function deepFreeze(value) {
+  if (!value || typeof value !== "object" || Object.isFrozen(value)) {
+    return value;
+  }
+  Object.values(value).forEach(deepFreeze);
+  return Object.freeze(value);
+}

packages/device-adapter-runtime/test/registry.test.mjs

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+import assert from "node:assert/strict";
+import test from "node:test";
+
+import {
+  DEVICE_ADAPTER_CONTRACT_VERSION,
+  createDeviceAdapterRegistry,
+  defineDeviceAdapter,
+} from "../src/index.mjs";
+
+function adapter(adapterRef = "generic-tracker", profileRef = "generic.tracker.v1") {
+  return {
+    contractVersion: DEVICE_ADAPTER_CONTRACT_VERSION,
+    adapterRef,
+    runtimePackageRef: `@nodedc/${adapterRef}-adapter`,
+    profiles: [{
+      profileRef,
+      framing: { maxBufferedBytes: 64 * 1024 },
+    }],
+    createSession: () => ({}),
+  };
+}
+
+test("resolves only explicitly allowlisted adapter profiles", () => {
+  const registry = createDeviceAdapterRegistry({
+    adapters: [adapter()],
+  });
+  assert.deepEqual(registry.adapterRefs, ["generic-tracker"]);
+  assert.deepEqual(registry.profileRefs, ["generic.tracker.v1"]);
+  assert.equal(
+    registry.resolveProfile("generic.tracker.v1").adapter.adapterRef,
+    "generic-tracker",
+  );
+  assert.throws(
+    () => registry.resolveProfile("unknown.tracker.v1"),
+    /device_adapter_profile_not_allowlisted/,
+  );
+});
+
+test("rejects duplicate adapters and cross-adapter profile collisions", () => {
+  assert.throws(
+    () => createDeviceAdapterRegistry({ adapters: [adapter(), adapter()] }),
+    /device_adapter_registry_adapter_duplicate/,
+  );
+  assert.throws(
+    () => createDeviceAdapterRegistry({
+      adapters: [
+        adapter("generic-tracker", "shared.profile.v1"),
+        adapter("other-tracker", "shared.profile.v1"),
+      ],
+    }),
+    /device_adapter_registry_profile_duplicate/,
+  );
+});
+
+test("freezes adapter metadata but keeps the session factory callable", () => {
+  const defined = defineDeviceAdapter(adapter());
+  assert.equal(Object.isFrozen(defined), true);
+  assert.equal(Object.isFrozen(defined.profiles[0]), true);
+  assert.equal(typeof defined.createSession, "function");
+});