BLOCKOTUS/blockotus-organism#16 trycatch to promise

Author: danielfebrero

.gitignore

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+node_modules/

fabric/helper/javascript/.gitignore

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+/*
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+'use strict';
+
+const { Gateway, Wallets } = require('fabric-network');
+const fs = require('fs');
+const path = require('path');
+
+const WALLET_PATH = path.join(__dirname, '..', '..', '..', '..', '..', 'wallet');
+const CCP_PATH = path.resolve(__dirname, '..', '..', '..', '..', '..', 'network', 'organizations', 'peerOrganizations', 'org1.example.com', 'connection-org1.json');
+
+async function getContractAndGateway({username, chaincode, contract}) {
+	// load the network configuration
+	const ccp = JSON.parse(fs.readFileSync(CCP_PATH, 'utf8'));
+
+	// Create a new file system based wallet for managing identities.
+	const wallet = await Wallets.newFileSystemWallet(WALLET_PATH);
+
+	// Check to see if we've already enrolled the user.
+	const identity = await wallet.get(username);
+	if (!identity) throw new Error(`An identity for the user "${username}" does not exist in the wallet`);
+
+	// Create a new gateway for connecting to our peer node.
+	const gateway = new Gateway();
+	await gateway.connect(ccp, { identity, discovery: { enabled: true, asLocalhost: true } });
+
+	// Get the network (channel) our contract is deployed to.
+	const network = await gateway.getNetwork('mychannel');
+
+	// Get the contract from the network.
+	return {contract: network.getContract(chaincode, contract), gateway};
+}
+
+
+module.exports = {
+	getContractAndGateway
+}

fabric/helper/javascript/index.js

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+{
+  "name": "javascript",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "fabric-network": "^2.2.2"
+  }
+}