State channels demo #12

examples/SmartDataProvider/package.json

@@ -9,7 +9,7 @@
   "author": "",
   "license": "ISC",
   "dependencies": {
-    "@aeternity/aepp-sdk": "1.0.1",
+    "@aeternity/aepp-sdk": "1.0.1", 
     "forgae": "git+https://github.com/aeternity/aepp-forgae-js.git"
   }
 }

examples/StateChannelsBar/.babelrc

@@ -0,0 +1,8 @@
+{
+    "presets": ["@babel/preset-env"],
+    "plugins": [
+      "@babel/plugin-proposal-object-rest-spread",
+      "@babel/plugin-transform-runtime",
+      "@babel/plugin-proposal-export-default-from"
+    ]
+  }

examples/StateChannelsBar/.gitignore

@@ -0,0 +1,61 @@
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (https://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules/
+jspm_packages/
+
+# TypeScript v1 declaration files
+typings/
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variables file
+.env
+
+# next.js build output
+.next

examples/StateChannelsBar/README.md

@@ -0,0 +1,34 @@
+# ae-state-channels-demo
+STATE CHANNEL DEMO
+
+То run this demo you should update your docker image 
+```docker pull aeternity/aeternity:v1.4.0```
+
+also you should install "Allow CORS: Access-Control-Allow-origin" browser extension and allow CORS for localhost.
+PS: fix for chrome is this extension ```Moesif Orign & CORS Changer: https://chrome.google.com/webstore/detail/moesif-orign-cors-changer/digfbfaphojjndkpccljibejjbppifbc/related```
+
+clone this repo
+```git clone this_repo```
+
+install packages
+```npm install```
+
+run node
+```docker-compose up -d --force-recreate```
+
+run the demo
+```npm start```
+
+The demo app can be started on http://localhost:4000
+
+You as client and "the bar" as back end, in a browser you can paste your private/secret key to OPEN a channel, sign ON and OFF chain txs are in the front end.
+Back end, check and sign transactions too with own private/secret key.
+
+To open and close a state channel, 30k aettos are needed.
+
+The app demonstrates how you deposit some aettos, create on chain tx and after that you can purchase some items/products from "the bar " where all txs are very fast and transparent. You have basic history and can watch your balance
+
+If there is no off chain transaction for less than a minute channel close itself.
+There are some logs in the browser and terminal.
+
+!!! PS: if you cannot shutdown/close the state channel (throw an error), you should RESTART the node :)

examples/StateChannelsBar/config/keyPair.js

@@ -0,0 +1,4 @@
+module.exports = {
+    publicKey: 'ak_2mwRmUeYmfuW93ti9HMSUJzCk1EYcQEfikVSzgo6k2VghsWhgU',
+    secretKey: 'bb9f0b01c8c9553cfbaf7ef81a50f977b1326801ebf7294d1c2cbccdedf27476e9bbf604e611b5460a3b3999e9771b6f60417d73ce7c5519e12f7e127a1225ca'
+}

examples/StateChannelsBar/config/nodeConfig.js

@@ -0,0 +1,20 @@
+
+let useTestNetConfiguration = false;
+
+const wsAddress = 'wss://sdk-testnet.aepps.com/channel';
+
+const API_URL = useTestNetConfiguration ? 'https://sdk-testnet.aepps.com' : 'http://localhost:3001'
+const INTERNAL_API_URL = useTestNetConfiguration ? 'https://sdk-testnet.aepps.com' : 'http://localhost:3113'
+const STATE_CHANNEL_URL = useTestNetConfiguration ?  wsAddress : 'ws://localhost:3001'
+const NETWORK_ID = useTestNetConfiguration ? 'ae_uat' : 'ae_devnet' // 'ae_uat'; //'ae_docker' , ae_devnet
+const RESPONDER_HOST = useTestNetConfiguration ? wsAddress : 'localhost'
+const RESPONDER_PORT = useTestNetConfiguration ? '' : 3333
+
+module.exports = {
+    API_URL,
+    INTERNAL_API_URL,
+    STATE_CHANNEL_URL,
+    NETWORK_ID,
+    RESPONDER_HOST,
+    RESPONDER_PORT
+}

examples/StateChannelsBar/config/products.js

@@ -0,0 +1,5 @@
+module.exports = {
+    beer: 5000,
+    water: 1000,
+    chips: 3000
+}

examples/StateChannelsBar/config/stateChannelConfig.js

@@ -0,0 +1,40 @@
+
+const keyPair = require('./keyPair');
+const nodeConfig = require('./nodeConfig');
+
+//                  fee 20000000000000     
+const MINIMUM_DEPOSIT = 400000000000100 // 1000000; //'10000000000010000000';
+const channelReserve =  MINIMUM_DEPOSIT / 10; //'1000000000001000000';    // parseInt(MINIMUM_DEPOSIT * 0.25);
+
+module.exports = {
+    params: {
+        // Public key of initiator
+        // (in this case `initiatorAddress` defined earlier)
+        initiatorId: '',
+        // Public key of responder
+        // (in this case `responderAddress` defined earlier)
+        responderId: keyPair.publicKey,
+        // Initial deposit in favour of the responder by the initiator
+        pushAmount: 0,
+        // Amount of tokens initiator will deposit into state channel
+        initiatorAmount: MINIMUM_DEPOSIT,
+        // Amount of tokens responder will deposit into state channel
+        responderAmount: MINIMUM_DEPOSIT,
+        // Minimum amount both peers need to maintain
+        channelReserve: channelReserve,
+        // Minimum block height to include the channel_create_tx
+        ttl: 1000,
+        // Amount of blocks for disputing a solo close
+        lockPeriod: 20,
+        // Host of the responder's node
+        host: nodeConfig.RESPONDER_HOST,
+        // Port of the responders node
+        port: nodeConfig.RESPONDER_PORT,
+        //fee: 1000,
+        //nonce: 1000
+    },
+    amounts :{
+        deposit: MINIMUM_DEPOSIT,
+        reserve: channelReserve
+    }
+}

examples/StateChannelsBar/controllers/config-controller.js

@@ -0,0 +1,28 @@
+const config = require('./../config/stateChannelConfig');
+const products = require('./../config/products');
+
+async function getParams(req, res) {
+
+    let params = config.params
+
+    res.send(params);
+}
+
+function getProducts (req, res) {
+    let productArr = [];
+    for (productName in products) {
+        productArr.push({
+            name: productName,
+            price: products[productName]
+        });
+    }
+
+    res.send(productArr);
+}
+
+module.exports = {
+    get: {
+        getParams,
+        getProducts
+    }
+}