系统智能合约代码编写及测试

作者: 52hz_55ed | 来源:发表于2019-12-14 18:34 被阅读0次

准备代码

创建文件夹

root@wang-virtual-machine:/home/wang# mkdir fish
root@wang-virtual-machine:/home/wang# cd fish
root@wang-virtual-machine:/home/wang/fish# mkdir chaincode
root@wang-virtual-machine:/home/wang/fish# cd chaincode
root@wang-virtual-machine:/home/wang/fish/chaincode# mkdir fishcc
root@wang-virtual-machine:/home/wang/fish/chaincode# cd fishcc/
root@wang-virtual-machine:/home/wang/fish/chaincode/fishcc# npm init
root@wang-virtual-machine:/home/wang/fish/chaincode/fishcc# npm install --save fabric-shim

在fish目录创建index.js

'use strict';
const shim require('fabric-shim');
const util = require('util');
let Chaincode = class {
 //初始化智能合约的方法
 async Init(stub) {
 console.info('=========== Instantiated fabcar chaincode ===========');
 return shim.success();
 }
 async Invoke(stub) {
 let ret = stub.getFunctionAndParameters(); //获取函数和参数
 console.info(ret);

 let method = this[ret.fcn];
 if (!method) {
 console.error('找不到要调用的函数,函数名:' + ret.fcn);
 throw new Error('找不到要调用的函数,函数名:' + ret.fcn);
 }
 try {
 let payload = await method(stub, ret.params); //直接调用函数,获取返回值
 return shim.success(payload);
 } catch (err) {
 console.log(err);
 return shim.error(err);
     }
 }
 async queryFish(stub, args) {
 if (args.length != 1) {
 throw new Error('错误的调用参数. 实例: FISH01');
 }
 let fishNumber = args[0];

 let fishAsBytes = await stub.getState(fishNumber); //从账本中获取fish的信息,账本是二进制存储的
 if (!fishAsBytes || fishAsBytes.toString().length <= 0) {
 throw new Error(fishAsBytes + ' 不存在: ');
 }
 console.log(fishAsBytes.toString());
 return fishAsBytes;
 }
async initLedger(stub, args) {
 console.info('============= 开始 : 初始化账本 ===========');
 let fishes = [];
 fishes.push({
 vessel: "奋进号38A", 
 location: "67.0006, -70.5476", 
 timestamp: "1504054225",
 holder: "王大壮"
 });
 fishes.push({
 vessel: "光明号66B", 
 location: "57.9006, -78.3478", 
 timestamp: "1504054666",
 holder: "高大壮"
 });
 fishes.push({
 vessel: "钓鱼岛58B", 
 location: "77.9034, -75.3455", 
 timestamp: "1504054888",
 holder: "刘胡兰"
 });

 for (let i = 0; i < fishes.length; i++) {
 await stub.putState('FISH' + i, Buffer.from(JSON.stringify(fishes[i])));
 console.info('Added <--> ',fishes[i]);
 }
 console.info('============= 结束 :初始化账本 ===========');
 }
 async recordFish(stub, args) {
 console.info('============= START : record fish ===========');
 if (args.length != 5) {
 throw new Error('需要5个参数,第0个参数是id,后面的4个参数,   vessel, location,  timestamp, holder');
 }

 var fish = {
 vessel: args[1],
 location: args[2],
 timestamp: args[3],
 holder: args[4]
 };

 await stub.putState(args[0], Buffer.from(JSON.stringify(fish)));
 console.info('============= END : record fish ===========');
 }
 async queryAllFish(stub, args) {

 let startKey = 'FISH0';
 let endKey = 'FISH999';

 let iterator = await stub.getStateByRange(startKey, endKey);

 let allResults = [];
 while (true) {
 let res = await iterator.next();

 if (res.value && res.value.value.toString()) {
 let jsonRes = {};
 console.log(res.value.value.toString('utf8'));

 jsonRes.Key = res.value.key;
 try {
 jsonRes.Record = JSON.parse(res.value.value.toString('utf8'));
 } catch (err) {
 console.log(err);
 jsonRes.Record = res.value.value.toString('utf8');
 }
 allResults.push(jsonRes);
 }
 if (res.done) {
 console.log('end of data');
 await iterator.close();
 console.info(allResults);
 return Buffer.from(JSON.stringify(allResults));
         }
     }
 }
 async changeFishHolder(stub, args) {
 console.info('============= START : changeFishHolder ===========');
 if (args.length != 2) {
 throw new Error('参数数量错误,需要两个参数');
 }

 let fishAsBytes = await stub.getState(args[0]);
 let fish = JSON.parse(fishAsBytes);
 fish.holder = args[1];

 await stub.putState(args[0], Buffer.from(JSON.stringify(fish)));
 console.info('============= END : changeFishHolder ===========');
 }
 }
shim.start(new Chaincode());

##创建网络文件夹
root@wang-virtual-machine:/home/wang/fish# mkdir fishnetwork
创建文件夹存储所有基础的网络配置信息
root@wang-virtual-machine:/home/wang/fish/fishnetwork# mkdir basic-network

配置环境变量

配置msp信息crypto-config.yaml
在fish目录下操作

mkdir fisnetwork
cd fishnetwork
mkdir basic-network
cd basic-network
mkdir crypto-config.yaml

编写crypto-config.yaml

# Copyright IBM Corp. All Rights Reserved.
#
# SPDX-License-Identifier: Apache-2.0
#

# ---------------------------------------------------------------------------
# "OrdererOrgs" - Definition of organizations managing orderer nodes
# ---------------------------------------------------------------------------
OrdererOrgs:
  # ---------------------------------------------------------------------------
  # Orderer
  # ---------------------------------------------------------------------------
  - Name: Orderer
    Domain: example.com
    # ---------------------------------------------------------------------------
    # "Specs" - See PeerOrgs below for complete description
    # ---------------------------------------------------------------------------
    Specs:
      - Hostname: orderer
# ---------------------------------------------------------------------------
# "PeerOrgs" - Definition of organizations managing peer nodes
# ---------------------------------------------------------------------------
PeerOrgs:
  # ---------------------------------------------------------------------------
  # Org1
  # ---------------------------------------------------------------------------
  - Name: Org1
    Domain: org1.example.com
    # ---------------------------------------------------------------------------
    # "Specs"
    # ---------------------------------------------------------------------------
    # Uncomment this section to enable the explicit definition of hosts in your
    # configuration.  Most users will want to use Template, below
    #
    # Specs is an array of Spec entries.  Each Spec entry consists of two fields:
    #   - Hostname:   (Required) The desired hostname, sans the domain.
    #   - CommonName: (Optional) Specifies the template or explicit override for
    #                 the CN.  By default, this is the template:
    #
    #                              "{{.Hostname}}.{{.Domain}}"
    #
    #                 which obtains its values from the Spec.Hostname and
    #                 Org.Domain, respectively.
    # ---------------------------------------------------------------------------
    # Specs:
    #   - Hostname: foo # implicitly "foo.org1.example.com"
    #     CommonName: foo27.org5.example.com # overrides Hostname-based FQDN set above
    #   - Hostname: bar
    #   - Hostname: baz
    # ---------------------------------------------------------------------------
    # "Template"
    # ---------------------------------------------------------------------------
    # Allows for the definition of 1 or more hosts that are created sequentially
    # from a template. By default, this looks like "peer%d" from 0 to Count-1.
    # You may override the number of nodes (Count), the starting index (Start)
    # or the template used to construct the name (Hostname).
    #
    # Note: Template and Specs are not mutually exclusive.  You may define both
    # sections and the aggregate nodes will be created for you.  Take care with
    # name collisions
    # ---------------------------------------------------------------------------
    Template:
      Count: 1
      # Start: 5
      # Hostname: {{.Prefix}}{{.Index}} # default
    # ---------------------------------------------------------------------------
    # "Users"
    # ---------------------------------------------------------------------------
    # Count: The number of user accounts _in addition_ to Admin
    # ---------------------------------------------------------------------------
    Users:
      Count: 1

配置组织和排序节点 configtx.yaml

# Copyright IBM Corp. All Rights Reserved.
#
# SPDX-License-Identifier: Apache-2.0
#

---
################################################################################
#
#   Profile
#
#   - Different configuration profiles may be encoded here to be specified
#   as parameters to the configtxgen tool
#
################################################################################
Profiles:

    OneOrgOrdererGenesis:
        Orderer:
            <<: *OrdererDefaults
            Organizations:
                - *OrdererOrg
        Consortiums:
            SampleConsortium:
                Organizations:
                    - *Org1
    OneOrgChannel:
        Consortium: SampleConsortium
        Application:
            <<: *ApplicationDefaults
            Organizations:
                - *Org1

################################################################################
#
#   Section: Organizations
#
#   - This section defines the different organizational identities which will
#   be referenced later in the configuration.
#
################################################################################
Organizations:

    # SampleOrg defines an MSP using the sampleconfig.  It should never be used
    # in production but may be used as a template for other definitions
    - &OrdererOrg
        # DefaultOrg defines the organization which is used in the sampleconfig
        # of the fabric.git development environment
        Name: OrdererOrg

        # ID to load the MSP definition as
        ID: OrdererMSP

        # MSPDir is the filesystem path which contains the MSP configuration
        MSPDir: crypto-config/ordererOrganizations/example.com/msp

    - &Org1
        # DefaultOrg defines the organization which is used in the sampleconfig
        # of the fabric.git development environment
        Name: Org1MSP

        # ID to load the MSP definition as
        ID: Org1MSP

        MSPDir: crypto-config/peerOrganizations/org1.example.com/msp

        AnchorPeers:
            # AnchorPeers defines the location of peers which can be used
            # for cross org gossip communication.  Note, this value is only
            # encoded in the genesis block in the Application section context
            - Host: peer0.org1.example.com
              Port: 7051

################################################################################
#
#   SECTION: Orderer
#
#   - This section defines the values to encode into a config transaction or
#   genesis block for orderer related parameters
#
################################################################################
Orderer: &OrdererDefaults

    # Orderer Type: The orderer implementation to start
    # Available types are "solo" and "kafka"
    OrdererType: solo

    Addresses:
        - orderer.example.com:7050

    # Batch Timeout: The amount of time to wait before creating a batch
    BatchTimeout: 2s

    # Batch Size: Controls the number of messages batched into a block
    BatchSize:

        # Max Message Count: The maximum number of messages to permit in a batch
        MaxMessageCount: 10

        # Absolute Max Bytes: The absolute maximum number of bytes allowed for
        # the serialized messages in a batch.
        AbsoluteMaxBytes: 99 MB

        # Preferred Max Bytes: The preferred maximum number of bytes allowed for
        # the serialized messages in a batch. A message larger than the preferred
        # max bytes will result in a batch larger than preferred max bytes.
        PreferredMaxBytes: 512 KB

    Kafka:
        # Brokers: A list of Kafka brokers to which the orderer connects
        # NOTE: Use IP:port notation
        Brokers:
            - 127.0.0.1:9092

    # Organizations is the list of orgs which are defined as participants on
    # the orderer side of the network
    Organizations:

################################################################################
#
#   SECTION: Application
#
#   - This section defines the values to encode into a config transaction or
#   genesis block for application related parameters
#
################################################################################
Application: &ApplicationDefaults

    # Organizations is the list of orgs which are defined as participants on
    # the application side of the network
    Organizations:

root@wang-virtual-machine:/home/wang/fabric-samples/bin# export PATH=/home/wang/fabric-samples/bin:$PATH
root@wang-virtual-machine:/home/wang/fish/fishnetwork/basic-network# cryptogen generate --config ./crypto-config.yaml

生成创世区块

root@wang-virtual-machine:/home/wang/fish/fishnetwork/basic-network# mkdir channel-artifacts
root@wang-virtual-machine:/home/wang/fish/fishnetwork/basic-network# configtxgen -profile OneOrgOrdererGenesis -outputBlock ./channel-artifacts/genesis.block
root@wang-virtual-machine:/home/wang/fish/fishnetwork/basic-network# configtxgen -profile OneOrgChannel -outputCreateChannelTx ./channel-artifacts/channel.tx -channelID mychannel

系统智能合约代码编写及测试

准备代码

创建文件夹

配置环境变量

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