Hyperledger Fabric SDK 示例fabric-samples-《balance-transfer》之十一《查询已经安装/实例化的chaincode》

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转载请标明出处：
https://blog.csdn.net/qq_27818541/article/details/78579641
本文出自:【BigManing的博客】

前言

查询节点上的chaincode信息。需要如下参数：

• peer节点

这里展示下org1下的peer1节点已经安装的chaincode信息。

路由

app.js

//查询chaincode信息 Query to fetch all Installed/instantiated chaincodes
app.get('/chaincodes', function(req, res) {
    var peer = req.query.peer;
    var installType = req.query.type;
    // 这个api是根据installType（installed / instantiated）来区分查找的是哪类chaincode
    if (installType === 'installed') {
        logger.debug(
            '================ GET INSTALLED CHAINCODES ======================');
    } else {
        logger.debug(
            '================ GET INSTANTIATED CHAINCODES ======================');
    }
    //具体实现 
    query.getInstalledChaincodes(peer, installType, req.username, req.orgname)
    .then(function(message) {
        res.send(message);
    });
});

具体实现

query.js

var getInstalledChaincodes = function(peer, type, username, org) {
    // peer地址
    var target = buildTarget(peer, org);
    // channel实例
    var channel = helper.getChannelForOrg(org);
    //client实例
    var client = helper.getClientForOrg(org);

    return helper.getOrgAdmin(org).then((member) => {
        //关键是API的调用
        if (type === 'installed') {
            return client.queryInstalledChaincodes(target);
        } else {
            return channel.queryInstantiatedChaincodes(target);
        }
    }, (err) => {
        logger.info('Failed to get submitter "' + username + '"');
        return 'Failed to get submitter "' + username + '". Error: ' + err.stack ?
            err.stack : err;
    }).then((response) => {
        if (response) {
            // 根据类型 区分打印结果
            if (type === 'installed') {
                logger.debug('<<< Installed Chaincodes >>>');
            } else {
                logger.debug('<<< Instantiated Chaincodes >>>');
            }
            var details = [];
            for (let i = 0; i < response.chaincodes.length; i++) {
                logger.debug('name: ' + response.chaincodes[i].name + ', version: ' +
                    response.chaincodes[i].version + ', path: ' + response.chaincodes[i].path
                );
                details.push('name: ' + response.chaincodes[i].name + ', version: ' +
                    response.chaincodes[i].version + ', path: ' + response.chaincodes[i].path
                );
            }
            return details;
        } else {
            logger.error('response is null');
            return 'response is null';
        }
    }, (err) => {
        logger.error('Failed to send query due to error: ' + err.stack ? err.stack :
            err);
        return 'Failed to send query due to error: ' + err.stack ? err.stack : err;
    }).catch((err) => {
        logger.error('Failed to query with error:' + err.stack ? err.stack : err);
        return 'Failed to query with error:' + err.stack ? err.stack : err;
    });
};

基本流程

API访问

echo "GET query Installed chaincodes"
echo
curl -s -X GET \
  "http://localhost:4000/chaincodes?peer=peer1&type=installed" \
  -H "authorization: Bearer $ORG1_TOKEN" \
  -H "content-type: application/json"
echo
echo

控制台打印：

GET query Installed chaincodes

["name: mycc, version: v0, path: github.com/example_cc"]

后台打印：

[2017-10-16 11:07:43.140] [DEBUG] SampleWebApp - Decoded from JWT token: username - Jim, orgname - org1
[2017-10-16 11:07:43.140] [DEBUG] SampleWebApp - ================ GET TRANSACTION BY TRANSACTION_ID ======================
[2017-10-16 11:07:43.141] [DEBUG] SampleWebApp - channelName : mychannel
[2017-10-16 11:07:43.142] [DEBUG] Helper - [FileKeyValueStore.js]: FileKeyValueStore.js - constructor
[2017-10-16 11:07:43.144] [DEBUG] Helper - [FileKeyValueStore.js]: FileKeyValueStore -- getValue
[2017-10-16 11:07:43.145] [DEBUG] Helper - [crypto_ecdsa_aes]: importKey - start
[2017-10-16 11:07:43.146] [DEBUG] Helper - [crypto_ecdsa_aes]: importKey - have the key [Circular]
[2017-10-16 11:07:43.146] [DEBUG] Helper - [utils.CryptoKeyStore]: _getKeyStore resolving store
[2017-10-16 11:07:43.146] [DEBUG] Helper - [ecdsa/key.js]: ECDSA curve param X: b3e2a75b9a4fd2b081589b1c45bde49f583aea9d7d466798c7b765c4ca96973d
[2017-10-16 11:07:43.146] [DEBUG] Helper - [ecdsa/key.js]: ECDSA curve param Y: c58820e5a9db75ab17841ac158e9389ad0d130a6827dc0682dcb2d2c5dccb349
[2017-10-16 11:07:43.146] [DEBUG] Helper - [FileKeyValueStore.js]: FileKeyValueStore -- setValue
[2017-10-16 11:07:43.147] [DEBUG] Helper - [utils.CryptoKeyStore]: _getKeyStore resolving store
[2017-10-16 11:07:43.147] [DEBUG] Helper - [FileKeyValueStore.js]: FileKeyValueStore -- getValue
[2017-10-16 11:07:43.147] [DEBUG] Helper - [ecdsa/key.js]: ECDSA curve param X: b3e2a75b9a4fd2b081589b1c45bde49f583aea9d7d466798c7b765c4ca96973d
[2017-10-16 11:07:43.147] [DEBUG] Helper - [ecdsa/key.js]: ECDSA curve param Y: c58820e5a9db75ab17841ac158e9389ad0d130a6827dc0682dcb2d2c5dccb349
[2017-10-16 11:07:43.148] [DEBUG] Helper - [ecdsa/key.js]: ECDSA curve param X: b3e2a75b9a4fd2b081589b1c45bde49f583aea9d7d466798c7b765c4ca96973d
[2017-10-16 11:07:43.148] [DEBUG] Helper - [ecdsa/key.js]: ECDSA curve param Y: c58820e5a9db75ab17841ac158e9389ad0d130a6827dc0682dcb2d2c5dccb349
[2017-10-16 11:07:43.148] [DEBUG] Helper - [ecdsa/key.js]: ECDSA curve param X: b3e2a75b9a4fd2b081589b1c45bde49f583aea9d7d466798c7b765c4ca96973d
[2017-10-16 11:07:43.148] [DEBUG] Helper - [ecdsa/key.js]: ECDSA curve param Y: c58820e5a9db75ab17841ac158e9389ad0d130a6827dc0682dcb2d2c5dccb349
[2017-10-16 11:07:43.148] [DEBUG] Helper - [FileKeyValueStore.js]: FileKeyValueStore -- setValue
[2017-10-16 11:07:43.148] [INFO] Helper - Successfully loaded member from persistence
[2017-10-16 11:07:43.155] [DEBUG] Helper - [crypto_ecdsa_aes]: ecdsa signature:  Signature {
  r: <BN: 6d0ae79a06d8b5d9d593d8a22f9667e41ef41d7005f635e071d61730e4519868>,
  s: <BN: 2aa650cffd0dcf227f76add8a490a94eae4717a572576e2f56105d58cb21d292>,
  recoveryParam: 1 }
[2017-10-16 11:07:43.167] [DEBUG] Query - { validationCode: 0,
  transactionEnvelope: 
   { signature: <Buffer 30 45 02 21 00 b1 1a 25 98 70 e0 bb f0 72 58 4f 35 3a b1 51 5f 47 59 c8 54 eb 47 5b ed cc ba 38 b5 c3 62 a4 d7 02 20 66 79 6e 05 ea e9 01 5e 63 ee a2 ... >,
     payload: { header: [Object], data: [Object] } } }[2017-10-16 11:07:43.180] [DEBUG] SampleWebApp - Decoded from JWT token: username - Jim, orgname - org1
[2017-10-16 11:07:43.180] [DEBUG] SampleWebApp - ================ GET CHANNEL INFORMATION ======================
[2017-10-16 11:07:43.180] [DEBUG] SampleWebApp - channelName : mychannel
[2017-10-16 11:07:43.181] [DEBUG] Helper - [FileKeyValueStore.js]: FileKeyValueStore.js - constructor
[2017-10-16 11:07:43.182] [DEBUG] Helper - [FileKeyValueStore.js]: FileKeyValueStore -- getValue
[2017-10-16 11:07:43.184] [DEBUG] Helper - [crypto_ecdsa_aes]: importKey - start
[2017-10-16 11:07:43.185] [DEBUG] Helper - [crypto_ecdsa_aes]: importKey - have the key [Circular]
[2017-10-16 11:07:43.185] [DEBUG] Helper - [utils.CryptoKeyStore]: _getKeyStore resolving store
[2017-10-16 11:07:43.186] [DEBUG] Helper - [ecdsa/key.js]: ECDSA curve param X: b3e2a75b9a4fd2b081589b1c45bde49f583aea9d7d466798c7b765c4ca96973d
[2017-10-16 11:07:43.186] [DEBUG] Helper [2017-10-16 11:07:43.219] [DEBUG] SampleWebApp - Decoded from JWT token: username - Jim, orgname - org1
[2017-10-16 11:07:43.220] [DEBUG] SampleWebApp - ================ GET INSTALLED CHAINCODES ======================
[2017-10-16 11:07:43.222] [DEBUG] Helper - [crypto_ecdsa_aes]: constructor, keySize: 256
[2017-10-16 11:07:43.222] [DEBUG] Helper - [crypto_ecdsa_aes]: Hash algorithm: SHA2, hash output size: 256
[2017-10-16 11:07:43.223] [DEBUG] Helper - [utils.CryptoKeyStore]: CryptoKeyStore, constructor - start
[2017-10-16 11:07:43.224] [DEBUG] Helper - [utils.CryptoKeyStore]: constructor, no super class specified, using config: fabric-client/lib/impl/FileKeyValueStore.js
[2017-10-16 11:07:43.224] [DEBUG] Helper - [FileKeyValueStore.js]: FileKeyValueStore.js - constructor
[2017-10-16 11:07:43.225] [DEBUG] Helper - Msp ID : Org1MSP
[2017-10-16 11:07:43.225] [DEBUG] Helper - [crypto_ecdsa_aes]: importKey - start
[2017-10-16 11:07:43.225] [DEBUG] Helper - [crypto_ecdsa_aes]: importKey - have the key [Circular]
[2017-10-16 11:07:43.226] [DEBUG] Helper - [utils.CryptoKeyStore]: This class requires a CryptoKeyStore to save keys, using the store: {"opts":{"path":"/tmp/fabric-client-kvs_peerOrg1"}}
[2017-10-16 11:07:43.226] [DEBUG] Helper - [FileKeyValueStore.js]: FileKeyValueStore.js - constructor
[2017-10-16 11:07:43.226] [DEBUG] Helper - [utils.CryptoKeyStore]: _getKeyStore returning ks
[2017-10-16 11:07:43.226] [DEBUG] Helper - [ecdsa/key.js]: ECDSA curve param X: 0a66f3503a3322b2ca8e9dce03322d486ee6ec5970efaad3f153bc13aa2d942c
[2017-10-16 11:07:43.227] [DEBUG] Helper - [ecdsa/key.js]: ECDSA curve param Y: 312ad05190fa592fb9e8ac2dcdb23c84df7f49e4ee295c2aa1200a50c9146c46
[2017-10-16 11:07:43.227] [DEBUG] Helper - [FileKeyValueStore.js]: FileKeyValueStore -- setValue
[2017-10-16 11:07:43.227] [DEBUG] Helper - [crypto_ecdsa_aes]: importKey - start
[2017-10-16 11:07:43.228] [DEBUG] Helper - [crypto_ecdsa_aes]: importKey - have the key [Circular]
[2017-10-16 11:07:43.228] [DEBUG] Helper - [utils.CryptoKeyStore]: _getKeyStore resolving store
[2017-10-16 11:07:43.228] [DEBUG] Helper - [ecdsa/key.js]: ECDSA curve param X: 0a66f3503a3322b2ca8e9dce03322d486ee6ec5970efaad3f153bc13aa2d942c
[2017-10-16 11:07:43.228] [DEBUG] Helper - [ecdsa/key.js]: ECDSA curve param Y: 312ad05190fa592fb9e8ac2dcdb23c84df7f49e4ee295c2aa1200a50c9146c46
[2017-10-16 11:07:43.229] [DEBUG] Helper - [FileKeyValueStore.js]: FileKeyValueStore -- setValue
[2017-10-16 11:07:43.229] [DEBUG] Helper - [ecdsa/key.js]: ECDSA curve param X: 0a66f3503a3322b2ca8e9dce03322d486ee6ec5970efaad3f153bc13aa2d942c
[2017-10-16 11:07:43.229] [DEBUG] Helper - [ecdsa/key.js]: ECDSA curve param Y: 312ad05190fa592fb9e8ac2dcdb23c84df7f49e4ee295c2aa1200a50c9146c46
[2017-10-16 11:07:43.229] [DEBUG] Helper - [ecdsa/key.js]: ECDSA curve param X: 0a66f3503a3322b2ca8e9dce03322d486ee6ec5970efaad3f153bc13aa2d942c
[2017-10-16 11:07:43.229] [DEBUG] Helper - [ecdsa/key.js]: ECDSA curve param Y: 312ad05190fa592fb9e8ac2dcdb23c84df7f49e4ee295c2aa1200a50c9146c46
[2017-10-16 11:07:43.230] [DEBUG] Helper - [ecdsa/key.js]: ECDSA curve param X: 0a66f3503a3322b2ca8e9dce03322d486ee6ec5970efaad3f153bc13aa2d942c
[2017-10-16 11:07:43.230] [DEBUG] Helper - [ecdsa/key.js]: ECDSA curve param Y: 312ad05190fa592fb9e8ac2dcdb23c84df7f49e4ee295c2aa1200a50c9146c46
[2017-10-16 11:07:43.230] [DEBUG] Helper - [FileKeyValueStore.js]: FileKeyValueStore -- setValue
[2017-10-16 11:07:43.235] [DEBUG] Helper - [crypto_ecdsa_aes]: ecdsa signature:  Signature {
  r: <BN: 7998f934a2a39ba42f71db18fad6e5f36e3f537e218a777fff0c95944cbea02a>,
  s: <BN: 21f6d2e03770cb886555b549ac0baf658c0858f79512a38d1811a1ad3c60b6b0>,
  recoveryParam: 0 }
[2017-10-16 11:07:43.255] [DEBUG] Query - <<< Installed Chaincodes >>>
[2017-10-16 11:07:43.255] [DEBUG] Query - name: mycc, version: v0, path: github.com/example_cc