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https://github.com/hyperledger/fabric-samples.git
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6b2799e620
Update the fabcar sample with an easier flow Remove hardcoded fields in the invoke program Change-Id: I9a06cdd317c2afec80720ac7d728d38fc62c6f63 Signed-off-by: Bret Harrison <beharrison@nc.rr.com> Signed-off-by: Nick Gaski <ngaski@us.ibm.com>
77 lines
2.5 KiB
JavaScript
77 lines
2.5 KiB
JavaScript
'use strict';
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/*
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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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* Chaincode query
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*/
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var Fabric_Client = require('fabric-client');
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var path = require('path');
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var util = require('util');
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var os = require('os');
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//
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var fabric_client = new Fabric_Client();
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// setup the fabric network
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var channel = fabric_client.newChannel('mychannel');
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var peer = fabric_client.newPeer('grpc://localhost:7051');
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channel.addPeer(peer);
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//
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var member_user = null;
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var store_path = path.join(__dirname, 'hfc-key-store');
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console.log('Store path:'+store_path);
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var tx_id = null;
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// create the key value store as defined in the fabric-client/config/default.json 'key-value-store' setting
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Fabric_Client.newDefaultKeyValueStore({ path: store_path
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}).then((state_store) => {
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// assign the store to the fabric client
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fabric_client.setStateStore(state_store);
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var crypto_suite = Fabric_Client.newCryptoSuite();
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// use the same location for the state store (where the users' certificate are kept)
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// and the crypto store (where the users' keys are kept)
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var crypto_store = Fabric_Client.newCryptoKeyStore({path: store_path});
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crypto_suite.setCryptoKeyStore(crypto_store);
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fabric_client.setCryptoSuite(crypto_suite);
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// get the enrolled user from persistence, this user will sign all requests
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return fabric_client.getUserContext('user1', true);
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}).then((user_from_store) => {
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if (user_from_store && user_from_store.isEnrolled()) {
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console.log('Successfully loaded user1 from persistence');
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member_user = user_from_store;
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} else {
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throw new Error('Failed to get user1.... run registerUser.js');
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}
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// queryCar chaincode function - requires 1 argument, ex: args: ['CAR4'],
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// queryAllCars chaincode function - requires no arguments , ex: args: [''],
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const request = {
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//targets : --- letting this default to the peers assigned to the channel
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chaincodeId: 'fabcar',
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fcn: 'queryAllCars',
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args: ['']
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};
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// send the query proposal to the peer
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return channel.queryByChaincode(request);
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}).then((query_responses) => {
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console.log("Query has completed, checking results");
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// query_responses could have more than one results if there multiple peers were used as targets
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if (query_responses && query_responses.length == 1) {
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if (query_responses[0] instanceof Error) {
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console.error("error from query = ", query_responses[0]);
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} else {
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console.log("Response is ", query_responses[0].toString());
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}
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} else {
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console.log("No payloads were returned from query");
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}
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}).catch((err) => {
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console.error('Failed to query successfully :: ' + err);
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});
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