区块链 2.0：Hyperledger Fabric学习（一）-Toy模板网

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区块链 2.0：Hyperledger Fabric学习（一）

启动Fabric网络、解析startFabric.sh

参考链接1

操作系统 : Ubuntu 22.04

一、启动命令

1.进入文件夹目录,启动网络（fabric-samples/fabcar)

$ cd ~/fabric-samples/fabcar
$ ./startFabric.sh java
# 指定语言

2.可能错误：文章来源地址https://www.toymoban.com/news/detail-530178.html

没有配置JAVA_HOME环境变量
使用JAVA 18会出现无法编译的错误，更换为JAVA 8之后成功解决

二、脚本解析

#!/bin/bash
#
# Copyright IBM Corp All Rights Reserved
#
# SPDX-License-Identifier: Apache-2.0
#
# Exit on first error
# 在后续的第一次出现错误时，直接退出脚本
set -e

# don't rewrite paths for Windows Git Bash users
export MSYS_NO_PATHCONV=1
starttime=$(date +%s)
# 设置chaincode语言
CC_SRC_LANGUAGE=${1:-"go"}
CC_SRC_LANGUAGE=`echo "$CC_SRC_LANGUAGE" | tr [:upper:] [:lower:]`

if [ "$CC_SRC_LANGUAGE" = "go" -o "$CC_SRC_LANGUAGE" = "golang" ] ; then
	CC_SRC_PATH="../chaincode/fabcar/go/"
elif [ "$CC_SRC_LANGUAGE" = "javascript" ]; then
	CC_SRC_PATH="../chaincode/fabcar/javascript/"
elif [ "$CC_SRC_LANGUAGE" = "java" ]; then
	CC_SRC_PATH="../chaincode/fabcar/java"
elif [ "$CC_SRC_LANGUAGE" = "typescript" ]; then
	CC_SRC_PATH="../chaincode/fabcar/typescript/"
else
	echo The chaincode language ${CC_SRC_LANGUAGE} is not supported by this script
	echo Supported chaincode languages are: go, java, javascript, and typescript
	exit 1
fi

# clean out any old identites in the wallets
# 删除在钱包中旧的身份信息
rm -rf javascript/wallet/*
rm -rf java/wallet/*
rm -rf typescript/wallet/*
rm -rf go/wallet/*

# launch network; create channel and join peer to channel
# 运行网络；创建通道，同时在通道中加入对等节点peer
pushd ../test-network
./network.sh down
./network.sh up createChannel -ca -s couchdb
./network.sh deployCC -ccn fabcar -ccv 1 -cci initLedger -ccl ${CC_SRC_LANGUAGE} -ccp ${CC_SRC_PATH}
popd

cat <<EOF

Total setup execution time : $(($(date +%s) - starttime)) secs ...

Next, use the FabCar applications to interact with the deployed FabCar contract.
The FabCar applications are available in multiple programming languages.
Follow the instructions for the programming language of your choice:

JavaScript:

  Start by changing into the "javascript" directory:
    cd javascript

  Next, install all required packages:
    npm install

  Then run the following applications to enroll the admin user, and register a new user
  called appUser which will be used by the other applications to interact with the deployed
  FabCar contract:
    node enrollAdmin
    node registerUser

  You can run the invoke application as follows. By default, the invoke application will
  create a new car, but you can update the application to submit other transactions:
    node invoke

  You can run the query application as follows. By default, the query application will
  return all cars, but you can update the application to evaluate other transactions:
    node query

TypeScript:

  Start by changing into the "typescript" directory:
    cd typescript

  Next, install all required packages:
    npm install

  Next, compile the TypeScript code into JavaScript:
    npm run build

  Then run the following applications to enroll the admin user, and register a new user
  called appUser which will be used by the other applications to interact with the deployed
  FabCar contract:
    node dist/enrollAdmin
    node dist/registerUser

  You can run the invoke application as follows. By default, the invoke application will
  create a new car, but you can update the application to submit other transactions:
    node dist/invoke

  You can run the query application as follows. By default, the query application will
  return all cars, but you can update the application to evaluate other transactions:
    node dist/query

Java:

  Start by changing into the "java" directory:
    cd java

  Then, install dependencies and run the test using:
    mvn test

  The test will invoke the sample client app which perform the following:
    - Enroll admin and appUser and import them into the wallet (if they don't already exist there)
    - Submit a transaction to create a new car
    - Evaluate a transaction (query) to return details of this car
    - Submit a transaction to change the owner of this car
    - Evaluate a transaction (query) to return the updated details of this car

Go:

  Start by changing into the "go" directory:
    cd go

  Then, install dependencies and run the test using:
    go run fabcar.go

  The test will invoke the sample client app which perform the following:
    - Import user credentials into the wallet (if they don't already exist there)
    - Submit a transaction to create a new car
    - Evaluate a transaction (query) to return details of this car
    - Submit a transaction to change the owner of this car
    - Evaluate a transaction (query) to return the updated details of this car

EOF