feat: have the bank use normal purses when not on chain

Author: michaelfig

packages/agoric-cli/lib/chain-config.js

@@ -1,11 +1,11 @@
 import djson from 'deterministic-json';
 import TOML from '@iarna/toml';
 
-export const MINT_DENOM = 'urun';
+export const MINT_DENOM = 'ubld';
 export const STAKING_DENOM = 'ubld';
 export const STAKING_MAX_VALIDATORS = 150;
 
-export const GOV_DEPOSIT_COINS = [{ amount: '10000000', denom: MINT_DENOM }];
+export const GOV_DEPOSIT_COINS = [{ amount: '1000000', denom: MINT_DENOM }];
 
 // Can't beat the speed of light, we need 600ms round trip time for the other
 // side of Earth, and multiple round trips per block.

packages/cosmic-swingset/Makefile

@@ -61,9 +61,9 @@ scenario2-setup-nobuild:
 	# Create the bootstrap account.
 	$(AGCH) --home=t1/bootstrap keys add bootstrap --keyring-backend=test
 	$(AGCH) --home=t1/bootstrap keys show -a bootstrap --keyring-backend=test > t1/bootstrap-address
-	$(AGCH) --home=t1/n0 add-genesis-account `cat t1/bootstrap-address` 100000000ubld,100provisionpass,100sendpacketpass
+	$(AGCH) --home=t1/n0 add-genesis-account `cat t1/bootstrap-address` 1000000000000000ubld,100provisionpass,100sendpacketpass
 	# Create the (singleton) chain node.
-	$(AGCH) --home=t1/n0 --keyring-dir=t1/bootstrap gentx --keyring-backend=test bootstrap 1000000ubld --chain-id=$(CHAIN_ID)
+	$(AGCH) --home=t1/n0 --keyring-dir=t1/bootstrap gentx --keyring-backend=test bootstrap 73000000ubld --chain-id=$(CHAIN_ID)
 	$(AGCH) --home=t1/n0 collect-gentxs
 	$(AGCH) --home=t1/n0 validate-genesis
 	../agoric-cli/bin/agoric set-defaults --export-metrics ag-chain-cosmos t1/n0/config

packages/cosmic-swingset/src/sim-chain.js

@@ -57,6 +57,11 @@ export async function connectToFakeChain(basedir, GCI, delay, inbound) {
     giveMeAllTheAgoricPowers: true,
     hardcodedClientAddresses: [bootAddress],
     noFakeCurrencies: process.env.NO_FAKE_CURRENCIES,
+    bootMsg: {
+      bootstrapAddress: 'agoric1simboot',
+      bootstrapValue: `${50000n * 10n ** 6n}`,
+      donationValue: `${5n * 10n ** 6n}`,
+    },
   };
   const stateDBdir = path.join(basedir, `fake-chain-${GCI}-state`);
   function flushChainSends(replay) {

packages/deployment/setup.js

@@ -2,7 +2,7 @@
 import chalk from 'chalk';
 
 export const ACCOUNT_JSON = `account.json`;
-export const DEFAULT_BOOT_TOKENS = `10000000000000000000000000urun`;
+export const DEFAULT_BOOT_TOKENS = `10000000000000000000000000ubld`;
 export const PLAYBOOK_WRAPPER = `./ansible-playbook.sh`;
 export const SSH_TYPE = 'ecdsa';
 

packages/vats/src/bootstrap.js

@@ -71,7 +71,7 @@ export function buildRootObject(vatPowers, vatParameters) {
       zoe,
       { priceAuthority, adminFacet: priceAuthorityAdmin },
     ] = await Promise.all([
-      bridgeManager ? E(bankVat).makeBankManager(bridgeManager) : undefined,
+      E(bankVat).makeBankManager(bridgeManager),
       E(vats.sharing).getSharingService(),
       E(vats.registrar).getSharedRegistrar(),
       E(vats.board).getBoard(),
@@ -161,7 +161,7 @@ export function buildRootObject(vatPowers, vatParameters) {
     // We just transfer the bootstrapValue in central tokens to the low-level
     // bootstrapAddress.
     async function depositCentralBootstrapPayment() {
-      if (!bankManager || !bootstrapAddress || !bootstrapPaymentValue) {
+      if (!bootstrapAddress || !bootstrapPaymentValue) {
         return;
       }
       await E(bankManager).addAsset(
@@ -218,7 +218,7 @@ export function buildRootObject(vatPowers, vatParameters) {
           issuerName,
           harden({ ...record, brand, issuer }),
         );
-        if (!record.bankDenom || !record.bankPurse || !bankManager) {
+        if (!record.bankDenom || !record.bankPurse) {
           return issuer;
         }
 
@@ -466,12 +466,16 @@ export function buildRootObject(vatPowers, vatParameters) {
         const mintIssuerNames = [];
         const mintPurseNames = [];
         const mintValues = [];
+        const payToBank = [];
         issuerNames.forEach(issuerName => {
           const record = issuerNameToRecord.get(issuerName);
           if (!record.defaultPurses) {
             return;
           }
           record.defaultPurses.forEach(([purseName, value]) => {
+            // Only pay to the bank if we don't have an actual bridge to the
+            // underlying chain (from which we'll get the assets).
+            payToBank.push(!bridgeManager && purseName === record.bankPurse);
             mintIssuerNames.push(issuerName);
             mintPurseNames.push(purseName);
             mintValues.push(value);
@@ -482,17 +486,38 @@ export function buildRootObject(vatPowers, vatParameters) {
           mintValues,
         );
 
-        const paymentInfo = mintIssuerNames.map((issuerName, i) => ({
+        const allPayments = mintIssuerNames.map((issuerName, i) => ({
           issuer: issuerNameToRecord.get(issuerName).issuer,
           issuerPetname: issuerName,
           payment: payments[i],
+          brand: issuerNameToRecord.get(issuerName).brand,
           pursePetname: mintPurseNames[i],
         }));
 
+        const bank = await E(bankManager).getBankForAddress(address);
+
+        // Separate out the purse-creating payments from the bank payments.
+        const faucetPaymentInfo = [];
+        await Promise.all(
+          allPayments.map(async (record, i) => {
+            if (!payToBank[i]) {
+              // Just a faucet payment to be claimed by a wallet.
+              faucetPaymentInfo.push(record);
+              return;
+            }
+            const { brand, payment } = record;
+
+            // Deposit the payment in the bank now.
+            assert(brand);
+            const purse = E(bank).getPurse(brand);
+            await E(purse).deposit(payment);
+          }),
+        );
+
         const faucet = Far('faucet', {
           // A method to reap the spoils of our on-chain provisioning.
           async tapFaucet() {
-            return paymentInfo;
+            return faucetPaymentInfo;
           },
         });
 
@@ -512,9 +537,6 @@ export function buildRootObject(vatPowers, vatParameters) {
           },
         };
 
-        const bank = await (bankManager &&
-          E(bankManager).getBankForAddress(address));
-
         /** @param {NatValue} value */
         async function donateCentralFromBootstrap(value) {
           if (!bank || !centralBootstrapPurse) {

packages/vats/src/issuers.js

@@ -72,6 +72,7 @@ const fromCosmosIssuerEntries = [
     'BLD',
     {
       issuerArgs: [undefined, { decimalPlaces: 6 }],
+      defaultPurses: [['Agoric staking token', scaleMicro(62)]],
       bankDenom: 'ubld',
       bankPurse: 'Agoric staking token',
       collateralConfig: {

packages/vats/src/vat-bank.js

@@ -85,40 +85,54 @@ const makePurseController = (
 export function buildRootObject(_vatPowers) {
   return Far('bankMaker', {
     /**
-     * @param {import('./bridge').BridgeManager} bridgeMgr
+     * @param {import('./bridge').BridgeManager} bridgeManager
      */
-    async makeBankManager(bridgeMgr) {
-      const bankCall = obj => E(bridgeMgr).toBridge('bank', obj);
-
+    async makeBankManager(bridgeManager) {
       /** @type {Store<Brand, AssetRecord>} */
       const brandToAssetRecord = makeStore('brand');
+
       /** @type {Store<string, Store<string, (amount: any) => void>>} */
       const denomToAddressUpdater = makeStore('denom');
 
-      const handler = Far('bankHandler', {
-        async fromBridge(_srcID, obj) {
-          switch (obj.type) {
-            case 'VPURSE_BALANCE_UPDATE': {
-              for (const update of obj.updated) {
-                try {
-                  const { address, denom, amount: value } = update;
-                  const addressToUpdater = denomToAddressUpdater.get(denom);
-                  const updater = addressToUpdater.get(address);
-
-                  updater(value);
-                } catch (e) {
-                  console.error('Unregistered update', update);
+      /**
+       * @param {import('./bridge').BridgeManager} bridgeMgr
+       */
+      async function getRemoteBankCall(bridgeMgr) {
+        if (!bridgeMgr) {
+          return undefined;
+        }
+
+        // We need to synchronise with the remote bank.
+        const handler = Far('bankHandler', {
+          async fromBridge(_srcID, obj) {
+            switch (obj.type) {
+              case 'VPURSE_BALANCE_UPDATE': {
+                for (const update of obj.updated) {
+                  try {
+                    const { address, denom, amount: value } = update;
+                    const addressToUpdater = denomToAddressUpdater.get(denom);
+                    const updater = addressToUpdater.get(address);
+
+                    updater(value);
+                  } catch (e) {
+                    console.error('Unregistered update', update);
+                  }
                 }
+                break;
               }
-              break;
+              default:
+                assert.fail(X`Unrecognized request ${obj.type}`);
             }
-            default:
-              assert.fail(X`Unrecognized request ${obj.type}`);
-          }
-        },
-      });
+          },
+        });
+
+        await E(bridgeMgr).register('bank', handler);
+
+        // We can only downcall to the bank if there exists a bridge manager.
+        return obj => E(bridgeMgr).toBridge('bank', obj);
+      }
 
-      await E(bridgeMgr).register('bank', handler);
+      const bankCall = await getRemoteBankCall(bridgeManager);
 
       /**
        * @typedef {Object} AssetDescriptor
@@ -203,7 +217,15 @@ export function buildRootObject(_vatPowers) {
               if (brandToVPurse.has(brand)) {
                 return brandToVPurse.get(brand);
               }
+
               const assetRecord = brandToAssetRecord.get(brand);
+              if (!bankCall) {
+                // Just emulate with a real purse.
+                const purse = await E(assetRecord.issuer).makeEmptyPurse();
+                brandToVPurse.init(brand, purse);
+                return purse;
+              }
+
               const addressToUpdater = denomToAddressUpdater.get(
                 assetRecord.denom,
               );