From 9b24615937cd47649f069292e343b7f85fe0622d Mon Sep 17 00:00:00 2001
From: Chris Hibbert <hibbert@agoric.com>
Date: Wed, 21 Jun 2023 11:27:12 -0700
Subject: [PATCH] feat(zoe!):add a config facet to Zoe so the zcfBundle can be
 updated

---
 packages/vats/src/vat-zoe.js       |  7 +++++--
 packages/zoe/src/zoeService/zoe.js | 23 ++++++++++++++++++++++-
 2 files changed, 27 insertions(+), 3 deletions(-)

diff --git a/packages/vats/src/vat-zoe.js b/packages/vats/src/vat-zoe.js
index cb9973e628cf..7591b2837b5f 100644
--- a/packages/vats/src/vat-zoe.js
+++ b/packages/vats/src/vat-zoe.js
@@ -6,15 +6,17 @@ const BUILD_PARAMS_KEY = 'buildZoeParams';
 export function buildRootObject(vatPowers, _vatParams, zoeBaggage) {
   const shutdownZoeVat = vatPowers.exitVatWithFailure;
 
+  let zoeConfigFacet;
+
   if (zoeBaggage.has(BUILD_PARAMS_KEY)) {
     const { feeIssuerConfig, zcfSpec } = zoeBaggage.get(BUILD_PARAMS_KEY);
-    makeDurableZoeKit({
+    ({ zoeConfigFacet } = makeDurableZoeKit({
       // For now Zoe will rewire vatAdminSvc on its own
       shutdownZoeVat,
       feeIssuerConfig,
       zcfSpec,
       zoeBaggage,
-    });
+    }));
   }
 
   return Far('root', {
@@ -44,5 +46,6 @@ export function buildRootObject(vatPowers, _vatParams, zoeBaggage) {
         feeMintAccess,
       });
     },
+    getZoeConfigFacet: () => zoeConfigFacet,
   });
 }
diff --git a/packages/zoe/src/zoeService/zoe.js b/packages/zoe/src/zoeService/zoe.js
index 3be3b3df3490..8364cc6b5ae4 100644
--- a/packages/zoe/src/zoeService/zoe.js
+++ b/packages/zoe/src/zoeService/zoe.js
@@ -18,6 +18,7 @@ import '../internal-types.js';
 import { E } from '@endo/eventual-send';
 import { Far } from '@endo/marshal';
 import { makeScalarBigMapStore, prepareExo } from '@agoric/vat-data';
+import { M } from '@agoric/store';
 
 import { makeZoeStorageManager } from './zoeStorageManager.js';
 import { makeStartInstance } from './startInstance.js';
@@ -32,7 +33,7 @@ import { ZoeServiceI } from '../typeGuards.js';
 const { Fail } = assert;
 
 /**
- * Create an durable instance of Zoe.
+ * Create a durable instance of Zoe.
  *
  * @param {object} options
  * @param {Baggage} options.zoeBaggage - the baggage for Zoe durability. Must be provided by caller
@@ -52,6 +53,7 @@ const makeDurableZoeKit = ({
   feeIssuerConfig = defaultFeeIssuerConfig,
   zcfSpec = { name: 'zcf' },
 }) => {
+  /** @type {BundleCap} */
   let zcfBundleCap;
 
   const saveBundleCap = () => {
@@ -168,6 +170,24 @@ const makeDurableZoeKit = ({
     });
   };
 
+  const ZoeConfigI = M.interface('ZoeConfigFacet', {
+    updateZcfBundleId: M.call(M.string()).returns(),
+  });
+
+  const zoeConfigFacet = prepareExo(zoeBaggage, 'ZoeConfigFacet', ZoeConfigI, {
+    updateZcfBundleId(bundleId) {
+      E.when(
+        getZcfBundleCap({ id: bundleId }, vatAdminSvc),
+        bundleCap => {
+          zcfBundleCap = bundleCap;
+        },
+        e => {
+          console.warn(`unable to update ZCF Bundle: `, e);
+        },
+      );
+    },
+  });
+
   /** @type {ZoeService} */
   const zoeService = prepareExo(zoeBaggage, 'ZoeService', ZoeServiceI, {
     install(bundleId, bundleLabel) {
@@ -223,6 +243,7 @@ const makeDurableZoeKit = ({
 
   return harden({
     zoeService,
+    zoeConfigFacet,
     /** @type {FeeMintAccess} */
     // @ts-expect-error cast
     feeMintAccess: feeMintKit.feeMintAccess,