Hyperledger fabric 2.2.0 环境搭建

基础环境搭建

### docker 安装
如果服务器上有旧版的docker，需要先执行卸载操作。
$ sudo yum remove docker  
                               docker-common  
                               docker-selinux  
                               docker-engine
                               
随后开始安装docker-ce
 1 $ sudo yum install -y yum-utils device-mapper-persistent-data lvm2
 2 
 3 $ sudo yum-config-manager 
 4     --add-repo 
 5 https://download.docker.com/linux/centos/docker-ce.repo
 6 
 7 $ sudo yum-config-manager --enable docker-ce-edge
 8 
 9 $ sudo yum-config-manager --enable docker-ce-test
10 
11 $ sudo yum-config-manager --disable docker-ce-edge
12 
13 $ sudo yum makecache fast
14 
15 $ sudo yum install docker-ce

执行查询docker版本号，看是否安装成功
docker --version

docker启动
service docker start

docker开机自启（视具体情况使用）
chkconfig docker on

### docker-compose 安装
需要服务器支持 curl 功能，如果服务器不支持 curl 功能，需要手动进行安装
yum install curl

执行如下操作下载docker-compose
sudo curl -L "https://github.com/docker/compose/releases/download/1.26.2/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose

下载目录为：
/usr/local/bin/docker-compose

为其添加可执行权限：
sudo chmod +x /usr/local/bin/docker-compose

查询版本信息：
docker-compose --version

### Go语言安装
安装包下载
curl -O https://golang.google.cn/doc/install?download=go1.15.linux-amd64.tar.gz

解压缩文件包
tar -C /usr/local -xzf go1.15.linux-amd64.tar.gz

配置 go 的环境变量
    修改 /etc/profile 文件使其永久生效
    1 export PATH=$PATH:/usr/local/go/bin
    2 export GOPATH=/opt/gopath

    修改文件后，执行如下命令，应用上述参数
    source /etc/profile
    
查看当前 go 版本信息
go version

也可通过下述命令查看是否安装成功
echo $PATH

Fabric源码及镜像文件处理

下载 fabric 源码是因为要用到源码中的例子和工具，工具编译需要用到 go 语言环境，因此需要把源码目录放到 GOPATH 下，路径设置为 /opt/gopath

可以使用 Git 命令下载源码（耗时会比较长）：
cd /opt/gopath/src/github.com/hyperledger/
git clone https://github.com/hyperledger/fabric.git

如果没有 git 命令，需要先执行如下命令，构建 git 环境：
yum install git

默认Fabric源码下载版本为 2.2.0

Fabric Docker 镜像的下载：
cd /opt/gopath/src/github.com/hyperledger/fabric/scripts
./bootstrap.sh
等待下载完成即可

至此，Fabric源码，fabric-samples 源码、fabric 镜像的工作已经完成

网络环境测试

启动 Fabric 网络
cd /opt/gopath/src/github.com/hyperledger/fabric/scripts/fabric-samples/test-network
./network.sh up

建立通道
./network.sh createChannel

在通道上启动链码
./network.sh deployCC

如果链码启动失败，手动添加 go 代理
go env -w GO111MODULE=on
go env -w GOPROXY=https://goproxy.cn,direct
再次启动链码即可

在test-network 目录进行如下环境变量设置
export PATH=${PWD}/../bin:${PWD}:$PATH
export FABRIC_CFG_PATH=$PWD/../config/

继续设置如下环境变量，允许以 peer Org1 的形式操作 CLI
# Environment variables for Org1
export CORE_PEER_TLS_ENABLED=true
export CORE_PEER_LOCALMSPID="Org1MSP"
export CORE_PEER_TLS_ROOTCERT_FILE=${PWD}/organizations/peerOrganizations/org1.example.com/peers/peer0.org1.example.com/tls/ca.crt
export CORE_PEER_MSPCONFIGPATH=${PWD}/organizations/peerOrganizations/org1.example.com/users/Admin@org1.example.com/msp
export CORE_PEER_ADDRESS=localhost:7051

完成后，source /etc/profile

获取已添加到通道分类账中的汽车列表
peer chaincode query -C mychannel -n fabcar -c '{"Args":["queryAllCars"]}'
上述命令可能会出现报错提示，如下（如果是提示某些文件不存在，我的一个解决办法是，关闭网络，启动网络前，source /etc/profile）：
Error: endorsement failure during query. response: status:500 message:"make sure the chaincode fabcar has been successfully defined on channel mychannel and try again: chaincode fabcar not found"
查看报错信息，我们可以知道，链码 fabcar 没有在通道上被定义，所以我们进入对应目录，执行启动指令：
cd /opt/gopath/src/github.com/hyperledger/fabric/scripts/fabric-samples/fabcar
./startFabric.sh
等待执行结束即可

我们现在可以重新进入 test-network 目录，执行命令
peer chaincode query -C mychannel -n fabcar -c '{"Args":["queryAllCars"]}'
可以看到，正常返回结果了
[{"Key":"CAR0","Record":{"make":"Toyota","model":"Prius","colour":"blue","owner":"Tomoko"}},{"Key":"CAR1","Record":{"make":"Ford","model":"Mustang","colour":"red","owner":"Brad"}},{"Key":"CAR2","Record":{"make":"Hyundai","model":"Tucson","colour":"green","owner":"Jin Soo"}},{"Key":"CAR3","Record":{"make":"Volkswagen","model":"Passat","colour":"yellow","owner":"Max"}},{"Key":"CAR4","Record":{"make":"Tesla","model":"S","colour":"black","owner":"Adriana"}},{"Key":"CAR5","Record":{"make":"Peugeot","model":"205","colour":"purple","owner":"Michel"}},{"Key":"CAR6","Record":{"make":"Chery","model":"S22L","colour":"white","owner":"Aarav"}},{"Key":"CAR7","Record":{"make":"Fiat","model":"Punto","colour":"violet","owner":"Pari"}},{"Key":"CAR8","Record":{"make":"Tata","model":"Nano","colour":"indigo","owner":"Valeria"}},{"Key":"CAR9","Record":{"make":"Holden","model":"Barina","colour":"brown","owner":"Shotaro"}}]

上述调试工作相继完成后，我们继续如下操作（仍然在 test-network 目录下），执行关闭网络指令：
./network.sh down

接着，编辑profile文件，添加如下内容（因为资产转移链码的背书策略要求事务由 Org1 和 Org2 签名，chaincode invoke 命令需要同时针对 peer0.org1.example.com 和 peer0.org2.example.com 使用 --peeradresses 标志，而且，由于为网络启用了 TLS， 该命令还需要使用 --tlsRootCertFiles 标志为每个对等方引用 TLS 证书。）：
vi /etc/profile

# Environment variables for Org2

export CORE_PEER_TLS_ENABLED=true
export CORE_PEER_LOCALMSPID="Org2MSP"
export CORE_PEER_TLS_ROOTCERT_FILE=${PWD}/organizations/peerOrganizations/org2.example.com/peers/peer0.org2.example.com/tls/ca.crt
export CORE_PEER_MSPCONFIGPATH=${PWD}/organizations/peerOrganizations/org2.example.com/users/Admin@org2.example.com/msp
export CORE_PEER_ADDRESS=localhost:9051
保存退出

source /etc/profile

启动测试网络：
./network.sh up
./network.sh createChannel
./network.sh deployCC

运行如下命令初始化资产分类账：
peer chaincode invoke -o localhost:7050 --ordererTLSHostnameOverride orderer.example.com --tls --cafile ${PWD}/organizations/ordererOrganizations/example.com/orderers/orderer.example.com/msp/tlscacerts/tlsca.example.com-cert.pem -C mychannel -n basic --peerAddresses localhost:7051 --tlsRootCertFiles ${PWD}/organizations/peerOrganizations/org1.example.com/peers/peer0.org1.example.com/tls/ca.crt --peerAddresses localhost:9051 --tlsRootCertFiles ${PWD}/organizations/peerOrganizations/org2.example.com/peers/peer0.org2.example.com/tls/ca.crt -c '{"function":"InitLedger","Args":[]}'

如果有如下报错信息，可能是链码没有在通道中被成功定义，关闭测试网络后，重新执行启动网络操作：
Error: endorsement failure during invoke. response: status:500 message:"make sure the chaincode basic has been successfully defined on channel mychannel and try again: chaincode basic not found"

上述初始化指令的执行成功返回结果信息如下：
2020-08-28 11:20:52.062 CST [chaincodeCmd] chaincodeInvokeOrQuery -> INFO 001 Chaincode invoke successful. result: status:200

运行以下命令获取添加到通道分类账的资产列表：
peer chaincode query -C mychannel -n basic -c '{"Args":["GetAllAssets"]}'

返回结果如下：
[{"ID":"asset1","color":"blue","size":5,"owner":"Tomoko","appraisedValue":300},{"ID":"asset2","color":"red","size":5,"owner":"Brad","appraisedValue":400},{"ID":"asset3","color":"green","size":10,"owner":"Jin Soo","appraisedValue":500},{"ID":"asset4","color":"yellow","size":10,"owner":"Max","appraisedValue":600},{"ID":"asset5","color":"black","size":15,"owner":"Adriana","appraisedValue":700},{"ID":"asset6","color":"white","size":15,"owner":"Michel","appraisedValue":800}]

当网络成员希望转移或更改分类账上的资产时，会调用链码。使用以下命令更改分类账上的资产所有者：
peer chaincode invoke -o localhost:7050 --ordererTLSHostnameOverride orderer.example.com --tls --cafile ${PWD}/organizations/ordererOrganizations/example.com/orderers/orderer.example.com/msp/tlscacerts/tlsca.example.com-cert.pem -C mychannel -n basic --peerAddresses localhost:7051 --tlsRootCertFiles ${PWD}/organizations/peerOrganizations/org1.example.com/peers/peer0.org1.example.com/tls/ca.crt --peerAddresses localhost:9051 --tlsRootCertFiles ${PWD}/organizations/peerOrganizations/org2.example.com/peers/peer0.org2.example.com/tls/ca.crt -c '{"function":"TransferAsset","Args":["asset6","Christopher"]}'

返回如下提示信息，即表示更改成功：
2020-08-28 11:21:29.252 CST [chaincodeCmd] chaincodeInvokeOrQuery -> INFO 001 Chaincode invoke successful. result: status:200

使用如下命令查询刚刚的转移信息：
peer chaincode query -C mychannel -n basic -c '{"Args":["ReadAsset","asset6"]}'

返回结果如下：
{"ID":"asset6","color":"white","size":15,"owner":"Christopher","appraisedValue":800}

（如果是提示某些文件不存在，我的一个解决办法是，启动网络前，source /etc/profile）