Hyperledger Fabric 2.2 学习笔记:测试网络test-network

写在前面

  最近被Hyperledger Fabric折磨,归根结底还是因为自己太菜了qwq。学习路漫漫,笔记不能少。下面的步骤均是基于已经成功搭建了Fabric2.2环境,并且拉取fabric-samples文件夹了。

一、启动测试网络

  打开终端进入test-network目录下。我的具体目录是: /workspace/fabric-samples/test-network,因此有命令:

cd /workspace/fabric-samples/test-network

  在使用./network.sh命令前,可以先查看选项说明。

./network.sh -h

  要是不想看问题也不大,跟着我走就好。(๑>ڡ<)

  下面正式开始!

  首先启动网络。注意下面这个命令只是启动网络并没有创建通道。

./network.sh up

  启动网络后,接着创建通道。由于这里并没有指定通道的名字,此时默认为mychannel.

./network.sh createChannel

  其实上述两步可以用一条命令实现,那就是:

./network.sh up createChannel

  之后,将bin目录中二进制文件添加到 CLI 路径。

export PATH=${PWD}/../bin:$PATH

  设置FABRIC_CFG_PATH为指向fabric-samples中的core.yaml文件。

export FABRIC_CFG_PATH=$PWD/../config/

 

二、安装链码

  根据官方文档可以知道,Fabric链码生命周期需要组织同意定义一个链码的参数,比如说名称、版本以及链码背书策略。通道成员通过以下四步达成共识。不是通道上的每一个组织都需要完成每一步。

  1.打包链码。这一步可以被一个或者每一个组织完成。

  2.安装链码在你的peer节点上。每一个用链码的组织都需要完成。

  3.为你的组织批准链码定义。使用链码的每一个组织都需要完成这一步。链码能够在通道上运行之前,链码定义需要被足够多的组织批准来满足通道的生命周期背书(LifecycleEndorsement)策略(默认为大多数组织)。

  4.提交链码定义到链上。一旦通道所需数量的组织已经同意,提交交易需要被提交。提交者首先从已同意组织中的足够的peer节点中收集背书,然后通过提交链码声明。

  显然,下面要进行的第一步是打包链码。链码需要被打包成一个tar文件。

 

  1.打包链码

  下面使用peer lifecycle chaincode package命令创建链码包

peer lifecycle chaincode package fabcar.tar.gz --path ../chaincode/fabcar/go/ --lang golang --label fabcar_1

  说明:① 命令中–path指的是 将指定目录(../chaincode/fabcar/go/)的源码打包成fabcar.tar.gz.

      ② –label 后面是标签,当日后链码包升级的时候,可以设置不同的标签。

 

  2.安装链码

  此时网络有两个组织,所以需要先后在Org1、Org2的peer节点上安装链码。

  (1)Org1 peer节点安装链码

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
peer lifecycle chaincode install fabcar.tar.gz

  当看到status:200即为成功。具体成功返回如下:

2022-04-20 10:03:14.293 CST [cli.lifecycle.chaincode] submitInstallProposal -> INFO 001 Installed remotely: response:<status:200 payload:"\nIfabcar_1:762e0fe3dbeee0f7b08fb6200adeb4a3a20f649a00f168c0b3c2257e53b6e506\022\010fabcar_1" >
2022-04-20 10:03:14.294 CST [cli.lifecycle.chaincode] submitInstallProposal -> INFO 002 Chaincode code package identifier: fabcar_1:762e0fe3dbeee0f7b08fb6200adeb4a3a20f649a00f168c0b3c2257e53b6e506

  但过程总是曲折的,显然我没有那么顺利成功。在安转链码的时候,我得到如下返回:

Error: chaincode install failed with status: 500 - failed to invoke backing implementation of 'InstallChaincode': could
not build chaincode: docker build failed: docker image build failed: docker build failed: Error returned from build: 1
"go: github.com/hyperledger/fabric-contract-api-go@v1.1.0: Get "https://proxy.golang.org/github.com/hyperledger
/fabric-contract-api-go/@v/v1.1.0.mod": dial tcp: lookup proxy.golang.org on 172.20.10.1:53: read udp 172.17.0.2:53395
->172.20.10.1:53: i/o timeout “

  解决方案如下:

  到../chaincode/fabcar/go/目录下打开终端执行命令。

go env -w GOPROXY=https://goproxy.io,direct
go env -w GO111MODULE=on
go mod vendor

  之后重新执行peer lifecycle chaincode install fabcar.tar.gz即可成功。

  (2)Org2 peer节点安装链码

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
peer lifecycle chaincode install fabcar.tar.gz

 

  3.批准链码定义

  下面需要把链码发布到通道上去。首先查询链码包ID

peer lifecycle chaincode queryinstalled

  得到返回如下:

Installed chaincodes on peer:
Package ID: fabcar_1:762e0fe3dbeee0f7b08fb6200adeb4a3a20f649a00f168c0b3c2257e53b6e506, Label: fabcar_1

  因此我的包ID为:

fabcar_1:762e0fe3dbeee0f7b08fb6200adeb4a3a20f649a00f168c0b3c2257e53b6e506.

  通过链码时,我们将使用包ID,因此,将包ID保存为环境变量。将返回的包ID粘贴到下面的命令中。

export CC_PACKAGE_ID=

  在这里就是:

export CC_PACKAGE_ID=fabcar_1:762e0fe3dbeee0f7b08fb6200adeb4a3a20f649a00f168c0b3c2257e53b6e506

  之后,Org2通过链码定义

peer lifecycle chaincode approveformyorg -o localhost:7050 --ordererTLSHostnameOverride orderer.example.com --channelID mychannel --name fabcar --version 1.0 --package-id $CC_PACKAGE_ID --sequence 1 --tls --cafile ${PWD}/organizations/ordererOrganizations/example.com/orderers/orderer.example.com/msp/tlscacerts/tlsca.example.com-cert.pem --waitForEvent

  返回如下即为成功。

2022-04-20 10:20:59.307 CST [chaincodeCmd] ClientWait -> INFO 001 txid [f688ddff60056af56e96784d253695e9fbb056e5244058fb30b2d05977214c1c] committed with status (VALID) at localhost:9051

  设置以下环境变量以Org1管理员身份运行:
  Org1通过链码定义

export CORE_PEER_LOCALMSPID="Org1MSP"
export CORE_PEER_MSPCONFIGPATH=${PWD}/organizations/peerOrganizations/org1.example.com/users/Admin@org1.example.com/msp
export CORE_PEER_TLS_ROOTCERT_FILE=${PWD}/organizations/peerOrganizations/org1.example.com/peers/peer0.org1.example.com/tls/ca.crt
export CORE_PEER_ADDRESS=localhost:7051
peer lifecycle chaincode approveformyorg -o localhost:7050 --ordererTLSHostnameOverride orderer.example.com --channelID mychannel --name fabcar --version 1.0 --package-id $CC_PACKAGE_ID --sequence 1 --tls --cafile ${PWD}/organizations/ordererOrganizations/example.com/orderers/orderer.example.com/msp/tlscacerts/tlsca.example.com-cert.pem --waitForEvent

  返回:

2022-04-20 10:25:23.828 CST [chaincodeCmd] ClientWait -> INFO 001 txid [9178a978646d4b010a61677488532af88b7393ba898341168fc627c0953a9884] committed with status (VALID) at localhost:7051

  使用 peer lifecycle chaincode checkcommitreadiness 命令来检查通道成员是否已批准相同的链码定义:

peer lifecycle chaincode checkcommitreadiness --channelID mychannel --name fabcar --version 1.0 --sequence 1 --tls --cafile ${PWD}/organizations/ordererOrganizations/example.com/orderers/orderer.example.com/msp/tlscacerts/tlsca.example.com-cert.pem --output json

  返回:

{
    "approvals": {
        "Org1MSP": true,
        "Org2MSP": true
    }
}

  返回的结果说明这两个节点批准了这个链码的定义。

 

  4.将链码提交到通道

  使用 peer lifecycle chaincode commit 命令将链码定义提交到通道。commit命令还需要由组织管理员提交。

peer lifecycle chaincode commit -o localhost:7050 --ordererTLSHostnameOverride orderer.example.com --channelID mychannel --name fabcar --version 1.0 --sequence 1 --tls --cafile ${PWD}/organizations/ordererOrganizations/example.com/orderers/orderer.example.com/msp/tlscacerts/tlsca.example.com-cert.pem --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

  返回:

2022-04-20 10:45:05.973 CST [chaincodeCmd] ClientWait -> INFO 001 txid [c93e2e79e2da09f04654d30630959d9e80d2576aefdf4be16e3b281d48a011a4] committed with status (VALID) at localhost:7051
2022-04-20 10:45:06.019 CST [chaincodeCmd] ClientWait -> INFO 002 txid [c93e2e79e2da09f04654d30630959d9e80d2576aefdf4be16e3b281d48a011a4] committed with status (VALID) at localhost:9051

  使用 peer lifecycle chaincode querycommitted 命令来确认链码定义已经提交给通道。

peer lifecycle chaincode querycommitted --channelID mychannel --name fabcar --cafile ${PWD}/organizations/ordererOrganizations/example.com/orderers/orderer.example.com/msp/tlscacerts/tlsca.example.com-cert.pem

  返回:

Committed chaincode definition for chaincode 'fabcar' on channel 'mychannel':
Version: 1.0, Sequence: 1, Endorsement Plugin: escc, Validation Plugin: vscc, Approvals: [Org1MSP: true, Org2MSP: true]

  看到此返回信息后可以知道我们提交的链码已经提交到通道myChannel中。

 

三、调用链码

  ① 调用链码

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 fabcar  --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":[]}'

  返回如下即为成功。

2022-04-20 15:49:24.590 CST [chaincodeCmd] chaincodeInvokeOrQuery -> INFO 001 Chaincode invoke successful. result: status:200

  显然,我并没有一下就成功。我得到如下返回:

Error: endorsement failure during invoke. response: status:500 message:"error in simulation:failed to execute transaction 5e72e85cea510ecc198412f2f7df406b8fbcff8adf97d052d6b165413ed85854:
could not launch chaincode fabcar_1:762e0fe3dbeee0f7b08fb6200adeb4a3a20f649a00f168c0b3c2257e53b6e506:error starting container: error starting container: API error (404): network _test not found"

  错误原因:

  fabric-samples/test-network/docker/docker-compose-test-net.yaml的配置文件中有一个

– CORE_VM_DOCKER_HOSTCONFIG_NETWORKMODE=${COMPOSE_PROJECT_NAME}_test

  ${COMPOSE_PROJECT_NAME}在智能合约启动时,此值获取到的会是空值,从而导致标题的错误提示。这个也被官方收录进issue中,并在fabric-samples的main分支中已经改为固定值,如下:

– CORE_VM_DOCKER_HOSTCONFIG_NETWORKMODE=fabric_test

 

  需要注意的是使用docker-compse启动时,创建的network名字会在前边加上当前docker-compse文件的目录名字。所以如果我们在使用老版本的fabric-sample时,自己可修改${COMPOSE_PROJECT_NAME}值为当前你存放compose文件的文件夹名称。
  查看创建的docker network可以使用docker network ls查看。
  此时查看到名字是:docker_test
因此将文件中的
– CORE_VM_DOCKER_HOSTCONFIG_NETWORKMODE=${COMPOSE_PROJECT_NAME}_test
改为
– CORE_VM_DOCKER_HOSTCONFIG_NETWORKMODE=docker_test
  注意文件有两处需要改。

 

 

  ②调用链码

peer chaincode query --channelID mychannel --name fabcar -c '{"Args":["queryAllCars"]}'

 

  得到返回:

[{"Key":"CAR0","Record":{"make":"Toyota","model":"Prius","colour":"blue","owner":"Tomoko"}},{"Key":"CAR1","Record":{"make":"Ford","model":"Mustang","colour":"red","owner":"Brad"}},{"Key":"CAR10","Record":{"make":"VW","model":"Polo","colour":"Grey","owner":"Archie"}},{"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"}}]

 

  到这测试网络也就跑通了。(๑╹◡╹)ノ”””

 

 

参考

[1] 
Hyperledger Fabric2中文文档-链码部署

[2] Error starting container: API error (404): {“message“:“network _byfn not found“}

[3] error starting container: API error (404): network fabric_test not found“

[4] hyperledger-fabric【1】运行测试网络

    原文作者:不爱学习的Shirley
    原文地址: https://www.cnblogs.com/shirleyya/p/16192131.html
    本文转自网络文章,转载此文章仅为分享知识,如有侵权,请联系博主进行删除。
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