refactor: split gateway server methods

src/gateway/server-methods/health.ts

@@ -0,0 +1,35 @@
+import { getStatusSummary } from "../../commands/status.js";
+import { ErrorCodes, errorShape } from "../protocol/index.js";
+import { HEALTH_REFRESH_INTERVAL_MS } from "../server-constants.js";
+import { formatError } from "../server-utils.js";
+import { formatForLog } from "../ws-log.js";
+import type { GatewayRequestHandlers } from "./types.js";
+
+export const healthHandlers: GatewayRequestHandlers = {
+  health: async ({ respond, context }) => {
+    const { getHealthCache, refreshHealthSnapshot, logHealth } = context;
+    const now = Date.now();
+    const cached = getHealthCache();
+    if (cached && now - cached.ts < HEALTH_REFRESH_INTERVAL_MS) {
+      respond(true, cached, undefined, { cached: true });
+      void refreshHealthSnapshot({ probe: false }).catch((err) =>
+        logHealth.error(`background health refresh failed: ${formatError(err)}`),
+      );
+      return;
+    }
+    try {
+      const snap = await refreshHealthSnapshot({ probe: false });
+      respond(true, snap, undefined);
+    } catch (err) {
+      respond(
+        false,
+        undefined,
+        errorShape(ErrorCodes.UNAVAILABLE, formatForLog(err)),
+      );
+    }
+  },
+  status: async ({ respond }) => {
+    const status = await getStatusSummary();
+    respond(true, status, undefined);
+  },
+};