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https://github.com/hyperledger/fabric-samples.git
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1efd213110
Add a channel event handler sample based on block events. Scope: create a block event handler write events received to the console write events received to a log file write events to an off chain couchdb database demonstrate a basic map reduce view for aggregation Change-Id: I5420ddc7070dbee785218ce5960f7604ac799f90 Signed-off-by: Chris Elder <chris.elder@us.ibm.com>
70 lines
2.1 KiB
JavaScript
70 lines
2.1 KiB
JavaScript
/*
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* Copyright IBM Corp. All Rights Reserved.
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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*/
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/*
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*
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* deleteMarble.js will delete a specified marble. Example:
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*
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* $ node deleteMarble.js marble100
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*
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* The utility is meant to demonstrate delete block events.
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*/
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'use strict';
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const { FileSystemWallet, Gateway } = require('fabric-network');
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const fs = require('fs');
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const path = require('path');
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const config = require('./config.json');
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const channelid = config.channelid;
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async function main() {
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if (process.argv[2] == undefined) {
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console.log("Usage: node deleteMarble marbleId");
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process.exit(1);
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}
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const deletekey = process.argv[2];
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try {
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// Parse the connection profile. This would be the path to the file downloaded
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// from the IBM Blockchain Platform operational console.
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const ccpPath = path.resolve(__dirname, '..', 'first-network', 'connection-org1.json');
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const ccp = JSON.parse(fs.readFileSync(ccpPath, 'utf8'));
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// Configure a wallet. This wallet must already be primed with an identity that
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// the application can use to interact with the peer node.
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const walletPath = path.resolve(__dirname, 'wallet');
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const wallet = new FileSystemWallet(walletPath);
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// Create a new gateway, and connect to the gateway peer node(s). The identity
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// specified must already exist in the specified wallet.
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const gateway = new Gateway();
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await gateway.connect(ccpPath, { wallet, identity: 'user1', discovery: { enabled: true, asLocalhost: true } });
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// Get the network channel that the smart contract is deployed to.
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const network = await gateway.getNetwork(channelid);
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// Get the smart contract from the network channel.
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const contract = network.getContract('marbles');
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await contract.submitTransaction('delete', deletekey);
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console.log("Deleted marble: " + deletekey);
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await gateway.disconnect();
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} catch (error) {
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console.error(`Failed to submit transaction: ${error}`);
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process.exit(1);
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}
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}
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main();
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