9.1 Helloworld案例简介
通过执行官方End-2-End案例，初始了解Fabric网络的运行流程及yaml配置，官方End-2-End案例把执行过程集成，通过一条命令即可完成全部操作，对于初学者只能了解Fabric网络搭建是否成功，对于Fabric网络的执行细节还是迷惑。
为了能让初学者全面了解Fabric网络的执行细节，本章通过手动方式搭建一个orderer、一个组织和一个peer的SOLO排序的Fabric网络，把配置独立出来，形成orderer和peer配置等单个yaml文件，通过手动执行orderer和peer搭建Fabric网络。
编写最简单的智能合约，初始化时在区块中存储Hello world字符串，然后通过智能合约可以查询出Hello world字符串，初步了解智能合约编写。
9.2 Helloworld链码编写
Helloworld链码实现Init和Invoke两个接口，通过stub.PutState和stub.GetState保存和获取链值对数据。
- Init(stub shim.ChaincodeStubInterface)：用于智能合约初始化及升级初始化,实现初始化时保存链值对；
- Invoke(stub shim.ChaincodeStubInterface)：是节点（peer）调用链码的入口函数，实现对账本进行保存和获取链值对；
实现两个文件,分别chaincode.go和cmd/ main.go，main.go是主入口函数
具体代码如下：
- main.go:
/* * * 文件名称 : main.go * 创建者 : linwf * 创建日期: 2018/08/23 * 文件描述: 主入口函数 * 历史记录: 无 */ package main import ( "fmt" "github.com/hyperledger/fabric/core/chaincode/shim" "github.com/hyperledger/fabric/helloworld/chaincode/go/helloworld" ) func main() { err := shim.Start(new(helloworld.SimpleChaincode)) if err != nil { fmt.Printf("Error starting Simple chaincode: %s", err) } }
- chaincode.go
/*
*
* 文件名称 : chaincode.go
* 创建者 : linwf
* 创建日期: 2018/08/23
* 文件描述: 实现存储Helloworld字符串的智能合约
* 历史记录: 无
*/
package helloworld
import (
"fmt"
"github.com/hyperledger/fabric/core/chaincode/shim"
pb "github.com/hyperledger/fabric/protos/peer"
)
// SimpleChaincode implements a simple chaincode to manage an asset
type SimpleChaincode struct {
}
// 链码实例化时，调用Init函数初始化数据
// 链码升级时，也会调用此函数重置或迁移数据
func (t *SimpleChaincode) Init(stub shim.ChaincodeStubInterface) pb.Response {
// 获取交易提案中的参数
args := stub.GetStringArgs()
if len(args) != 2 {
return shim.Error("Incorrect arguments. Expecting a key and a value")
}
// 通过调用stub.PutState()设置变量和数值
// 在账本上设置key和value
err := stub.PutState(args[0], []byte(args[1]))
if err != nil {
return shim.Error(fmt.Sprintf("Failed to create asset: %s", args[0]))
}
return shim.Success(nil)
}
// 调用Invoke函数进行资产交易
// 每笔交易通过get或set操作Init函数创建的key和value
// 通过set可以创建新的key和value
func (t *SimpleChaincode) Invoke(stub shim.ChaincodeStubInterface) pb.Response {
// 获取交易提案中的函数和参数
fn, args := stub.GetFunctionAndParameters()
var result string
var err error
if fn == "set" {
result, err = set(stub, args)
} else { // assume 'get' even if fn is nil
result, err = get(stub, args)
}
if err != nil {
return shim.Error(err.Error())
}
// Return the result as success payload
return shim.Success([]byte(result))
}
// 保存key和value到账本上
// 如果key存在，覆盖原有的value
func set(stub shim.ChaincodeStubInterface, args []string) (string, error) {
if len(args) != 2 {
return "", fmt.Errorf("Incorrect arguments. Expecting a key and a value")
}
err := stub.PutState(args[0], []byte(args[1]))
if err != nil {
return "", fmt.Errorf("Failed to set asset: %s", args[0])
}
return args[1], nil
}
// 获取key对应的value
func get(stub shim.ChaincodeStubInterface, args []string) (string, error) {
if len(args) != 1 {
return "", fmt.Errorf("Incorrect arguments. Expecting a key")
}
value, err := stub.GetState(args[0])
if err != nil {
return "", fmt.Errorf("Failed to get asset: %s with error: %s", args[0], err)
}
if value == nil {
return "", fmt.Errorf("Asset not found: %s", args[0])
}
return string(value), nil
}
9.3 Helloworld案例运行
9.3.1 创建helloworld目录
# cd $GOPATH/src/github.com/hyperledger/fabric
# mkdir helloworld
# cd helloworld
9.3.2 获取“cryptogen”和“configtxgen”工具
访问网址：https://nexus.hyperledger.org/content/repositories/releases/org/hyperledger/fabric/hyperledger-fabric/linux-amd64-1.2.0/，下载“cryptogen”和“configtxgen”等工具的二进制文件包hyperledger-fabric-linux-amd64-1.2.0.tar.gz，解压后把bin目录拷贝到helloworld目录下。Bin目录下的文件如下图所示：
图：bin目录文件
# chmod -R 777 ./bin
9.3.3 准备生成证书和区块配置文件
配置crypto-config.yaml和configtx.yaml文件，拷贝到helloworld目录下。
- 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 CA: Country: US Province: California Locality: San Francisco # --------------------------------------------------------------------------- # "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 EnableNodeOUs: true CA: Country: US Province: California Locality: San Francisco # --------------------------------------------------------------------------- # "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
- configtx.yaml：
# Copyright IBM Corp. All Rights Reserved. # # SPDX-License-Identifier: Apache-2.0 # --- ################################################################################ # # 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 # Policies defines the set of policies at this level of the config tree # For organization policies, their canonical path is usually # /Channel/<Application|Orderer>/<OrgName>/<PolicyName> Policies: Readers: Type: Signature Rule: "OR('OrdererMSP.member')" Writers: Type: Signature Rule: "OR('OrdererMSP.member')" Admins: Type: Signature Rule: "OR('OrdererMSP.admin')" - &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 # Policies defines the set of policies at this level of the config tree # For organization policies, their canonical path is usually # /Channel/<Application|Orderer>/<OrgName>/<PolicyName> Policies: Readers: Type: Signature Rule: "OR('Org1MSP.admin', 'Org1MSP.peer', 'Org1MSP.client')" Writers: Type: Signature Rule: "OR('Org1MSP.admin', 'Org1MSP.client')" Admins: Type: Signature Rule: "OR('Org1MSP.admin')" 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: Capabilities # # - This section defines the capabilities of fabric network. This is a new # concept as of v1.1.0 and should not be utilized in mixed networks with # v1.0.x peers and orderers. Capabilities define features which must be # present in a fabric binary for that binary to safely participate in the # fabric network. For instance, if a new MSP type is added, newer binaries # might recognize and validate the signatures from this type, while older # binaries without this support would be unable to validate those # transactions. This could lead to different versions of the fabric binaries # having different world states. Instead, defining a capability for a channel # informs those binaries without this capability that they must cease # processing transactions until they have been upgraded. For v1.0.x if any # capabilities are defined (including a map with all capabilities turned off) # then the v1.0.x peer will deliberately crash. # ################################################################################ Capabilities: # Channel capabilities apply to both the orderers and the peers and must be # supported by both. Set the value of the capability to true to require it. Global: &ChannelCapabilities # V1.1 for Global is a catchall flag for behavior which has been # determined to be desired for all orderers and peers running v1.0.x, # but the modification of which would cause incompatibilities. Users # should leave this flag set to true. V1_1: true # Orderer capabilities apply only to the orderers, and may be safely # manipulated without concern for upgrading peers. Set the value of the # capability to true to require it. Orderer: &OrdererCapabilities # V1.1 for Order is a catchall flag for behavior which has been # determined to be desired for all orderers running v1.0.x, but the # modification of which would cause incompatibilities. Users should # leave this flag set to true. V1_1: true # Application capabilities apply only to the peer network, and may be safely # manipulated without concern for upgrading orderers. Set the value of the # capability to true to require it. Application: &ApplicationCapabilities # V1.1 for Application is a catchall flag for behavior which has been # determined to be desired for all peers running v1.0.x, but the # modification of which would cause incompatibilities. Users should # leave this flag set to true. V1_2: true ################################################################################ # # 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: # Policies defines the set of policies at this level of the config tree # For Application policies, their canonical path is # /Channel/Application/<PolicyName> Policies: Readers: Type: ImplicitMeta Rule: "ANY Readers" Writers: Type: ImplicitMeta Rule: "ANY Writers" Admins: Type: ImplicitMeta Rule: "MAJORITY Admins" # Capabilities describes the application level capabilities, see the # dedicated Capabilities section elsewhere in this file for a full # description Capabilities: <<: *ApplicationCapabilities ################################################################################ # # 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: 98 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. Edit # this list to identify the brokers of the ordering service. # 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: # Policies defines the set of policies at this level of the config tree # For Orderer policies, their canonical path is # /Channel/Orderer/<PolicyName> Policies: Readers: Type: ImplicitMeta Rule: "ANY Readers" Writers: Type: ImplicitMeta Rule: "ANY Writers" Admins: Type: ImplicitMeta Rule: "MAJORITY Admins" # BlockValidation specifies what signatures must be included in the block # from the orderer for the peer to validate it. BlockValidation: Type: ImplicitMeta Rule: "ANY Writers" # Capabilities describes the orderer level capabilities, see the # dedicated Capabilities section elsewhere in this file for a full # description Capabilities: <<: *OrdererCapabilities ################################################################################ # # CHANNEL # # This section defines the values to encode into a config transaction or # genesis block for channel related parameters. # ################################################################################ Channel: &ChannelDefaults # Policies defines the set of policies at this level of the config tree # For Channel policies, their canonical path is # /Channel/<PolicyName> Policies: # Who may invoke the 'Deliver' API Readers: Type: ImplicitMeta Rule: "ANY Readers" # Who may invoke the 'Broadcast' API Writers: Type: ImplicitMeta Rule: "ANY Writers" # By default, who may modify elements at this config level Admins: Type: ImplicitMeta Rule: "MAJORITY Admins" # Capabilities describes the channel level capabilities, see the # dedicated Capabilities section elsewhere in this file for a full # description Capabilities: <<: *ChannelCapabilities ################################################################################ # # Profile # # - Different configuration profiles may be encoded here to be specified # as parameters to the configtxgen tool # ################################################################################ Profiles: OneOrgsOrdererGenesis: <<: *ChannelDefaults Orderer: <<: *OrdererDefaults Organizations: - *OrdererOrg Consortiums: SampleConsortium: Organizations: - *Org1 OneOrgsChannel: Consortium: SampleConsortium Application: <<: *ApplicationDefaults Organizations: - *Org1
9.3.4 生成公私钥和证书
# ./bin/cryptogen generate --config=./crypto-config.yaml
9.3.5 生成创世区块
# mkdir channel-artifacts
# ./bin/configtxgen -profile OneOrgsOrdererGenesis -outputBlock ./channel-artifacts/genesis.block
9.3.6 生成通道（Channel）配置区块
# ./bin/configtxgen -profile OneOrgsChannel -outputCreateChannelTx ./channel-artifacts/mychannel.tx -channelID mychannel
9.3.7 准备docker配置文件
配置docker-orderer.yaml和 docker-peer.yaml文件，拷贝到helloworld目录下。
- docker-orderer.yaml：
version: '2' services: orderer.example.com: container_name: orderer.example.com image: hyperledger/fabric-orderer environment: - ORDERER_GENERAL_LOGLEVEL=debug - ORDERER_GENERAL_LISTENADDRESS=0.0.0.0 - ORDERER_GENERAL_GENESISMETHOD=file - ORDERER_GENERAL_GENESISFILE=/var/hyperledger/orderer/orderer.genesis.block - ORDERER_GENERAL_LOCALMSPID=OrdererMSP - ORDERER_GENERAL_LOCALMSPDIR=/var/hyperledger/orderer/msp # enabled TLS - ORDERER_GENERAL_TLS_ENABLED=true - ORDERER_GENERAL_TLS_PRIVATEKEY=/var/hyperledger/orderer/tls/server.key - ORDERER_GENERAL_TLS_CERTIFICATE=/var/hyperledger/orderer/tls/server.crt - ORDERER_GENERAL_TLS_ROOTCAS=[/var/hyperledger/orderer/tls/ca.crt] working_dir: /opt/gopath/src/github.com/hyperledger/fabric command: orderer volumes: - ./channel-artifacts/genesis.block:/var/hyperledger/orderer/orderer.genesis.block - ./crypto-config/ordererOrganizations/example.com/orderers/orderer.example.com/msp:/var/hyperledger/orderer/msp - ./crypto-config/ordererOrganizations/example.com/orderers/orderer.example.com/tls/:/var/hyperledger/orderer/tls ports: - 7050:7050 docker-peer.yaml： version: '2' services: peer0.org1.example.com: container_name: peer0.org1.example.com image: hyperledger/fabric-peer environment: - CORE_PEER_ID=peer0.org1.example.com - CORE_PEER_ADDRESS=peer0.org1.example.com:7051 - CORE_PEER_CHAINCODEADDRESS=peer0.org1.example.com:7052 - CORE_PEER_CHAINCODELISTENADDRESS=0.0.0.0:7052 - CORE_PEER_GOSSIP_EXTERNALENDPOINT=peer0.org1.example.com:7051 - CORE_PEER_LOCALMSPID=Org1MSP - CORE_VM_ENDPOINT=unix:///host/var/run/docker.sock # the following setting starts chaincode containers on the same # bridge network as the peers # https://docs.docker.com/compose/networking/ - CORE_VM_DOCKER_HOSTCONFIG_NETWORKMODE=helloworld_default #- CORE_LOGGING_LEVEL=ERROR - CORE_LOGGING_LEVEL=DEBUG - CORE_PEER_TLS_ENABLED=true - CORE_PEER_GOSSIP_USELEADERELECTION=true - CORE_PEER_GOSSIP_ORGLEADER=false - CORE_PEER_PROFILE_ENABLED=true - CORE_PEER_TLS_CERT_FILE=/etc/hyperledger/fabric/tls/server.crt - CORE_PEER_TLS_KEY_FILE=/etc/hyperledger/fabric/tls/server.key - CORE_PEER_TLS_ROOTCERT_FILE=/etc/hyperledger/fabric/tls/ca.crt volumes: - /var/run/:/host/var/run/ - ./crypto-config/peerOrganizations/org1.example.com/peers/peer0.org1.example.com/msp:/etc/hyperledger/fabric/msp - ./crypto-config/peerOrganizations/org1.example.com/peers/peer0.org1.example.com/tls:/etc/hyperledger/fabric/tls working_dir: /opt/gopath/src/github.com/hyperledger/fabric/peer command: peer node start ports: - 7051:7051 - 7052:7052 - 7053:7053 extra_hosts: - "orderer.example.com:192.168.235.131" cli: container_name: cli image: hyperledger/fabric-tools tty: true environment: - GOPATH=/opt/gopath - CORE_VM_ENDPOINT=unix:///host/var/run/docker.sock - CORE_LOGGING_LEVEL=DEBUG - CORE_PEER_ID=cli - CORE_PEER_ADDRESS=peer0.org1.example.com:7051 - CORE_PEER_LOCALMSPID=Org1MSP - CORE_PEER_TLS_ENABLED=true - CORE_PEER_TLS_CERT_FILE=/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/peerOrganizations/org1.example.com/peers/peer0.org1.example.com/tls/server.crt - CORE_PEER_TLS_KEY_FILE=/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/peerOrganizations/org1.example.com/peers/peer0.org1.example.com/tls/server.key - CORE_PEER_TLS_ROOTCERT_FILE=/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/peerOrganizations/org1.example.com/peers/peer0.org1.example.com/tls/ca.crt - CORE_PEER_MSPCONFIGPATH=/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/peerOrganizations/org1.example.com/users/[email protected]/msp working_dir: /opt/gopath/src/github.com/hyperledger/fabric/peer volumes: - /var/run/:/host/var/run/ - ./chaincode/go/:/opt/gopath/src/github.com/hyperledger/fabric/helloworld/chaincode/go - ./crypto-config:/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/ - ./channel-artifacts:/opt/gopath/src/github.com/hyperledger/fabric/peer/channel-artifacts depends_on: - peer0.org1.example.com extra_hosts: - "orderer.example.com:192.168.235.131"
- docker-peer.yaml：
version: '2' services: peer0.org1.example.com: container_name: peer0.org1.example.com image: hyperledger/fabric-peer environment: - CORE_PEER_ID=peer0.org1.example.com - CORE_PEER_ADDRESS=peer0.org1.example.com:7051 - CORE_PEER_CHAINCODEADDRESS=peer0.org1.example.com:7052 - CORE_PEER_CHAINCODELISTENADDRESS=0.0.0.0:7052 - CORE_PEER_GOSSIP_EXTERNALENDPOINT=peer0.org1.example.com:7051 - CORE_PEER_LOCALMSPID=Org1MSP - CORE_VM_ENDPOINT=unix:///host/var/run/docker.sock # the following setting starts chaincode containers on the same # bridge network as the peers # https://docs.docker.com/compose/networking/ - CORE_VM_DOCKER_HOSTCONFIG_NETWORKMODE=helloworld_default #- CORE_LOGGING_LEVEL=ERROR - CORE_LOGGING_LEVEL=DEBUG - CORE_PEER_TLS_ENABLED=true - CORE_PEER_GOSSIP_USELEADERELECTION=true - CORE_PEER_GOSSIP_ORGLEADER=false - CORE_PEER_PROFILE_ENABLED=true - CORE_PEER_TLS_CERT_FILE=/etc/hyperledger/fabric/tls/server.crt - CORE_PEER_TLS_KEY_FILE=/etc/hyperledger/fabric/tls/server.key - CORE_PEER_TLS_ROOTCERT_FILE=/etc/hyperledger/fabric/tls/ca.crt volumes: - /var/run/:/host/var/run/ - ./crypto-config/peerOrganizations/org1.example.com/peers/peer0.org1.example.com/msp:/etc/hyperledger/fabric/msp - ./crypto-config/peerOrganizations/org1.example.com/peers/peer0.org1.example.com/tls:/etc/hyperledger/fabric/tls working_dir: /opt/gopath/src/github.com/hyperledger/fabric/peer command: peer node start ports: - 7051:7051 - 7052:7052 - 7053:7053 extra_hosts: - "orderer.example.com:192.168.235.131" cli: container_name: cli image: hyperledger/fabric-tools tty: true environment: - GOPATH=/opt/gopath - CORE_VM_ENDPOINT=unix:///host/var/run/docker.sock - CORE_LOGGING_LEVEL=DEBUG - CORE_PEER_ID=cli - CORE_PEER_ADDRESS=peer0.org1.example.com:7051 - CORE_PEER_LOCALMSPID=Org1MSP - CORE_PEER_TLS_ENABLED=true - CORE_PEER_TLS_CERT_FILE=/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/peerOrganizations/org1.example.com/peers/peer0.org1.example.com/tls/server.crt - CORE_PEER_TLS_KEY_FILE=/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/peerOrganizations/org1.example.com/peers/peer0.org1.example.com/tls/server.key - CORE_PEER_TLS_ROOTCERT_FILE=/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/peerOrganizations/org1.example.com/peers/peer0.org1.example.com/tls/ca.crt - CORE_PEER_MSPCONFIGPATH=/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/peerOrganizations/org1.example.com/users/[email protected]/msp working_dir: /opt/gopath/src/github.com/hyperledger/fabric/peer volumes: - /var/run/:/host/var/run/ - ./chaincode/go/:/opt/gopath/src/github.com/hyperledger/fabric/helloworld/chaincode/go - ./crypto-config:/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/ - ./channel-artifacts:/opt/gopath/src/github.com/hyperledger/fabric/peer/channel-artifacts depends_on: - peer0.org1.example.com extra_hosts: - "orderer.example.com:192.168.235.131"
9.3.8 准备部署智能合约
拷贝编写好的智能合约文件到helloworld/ chaincode/go/helloworld目录下。
9.3.9 启动Fabric网络
1） 启动orderer
# docker-compose -f docker-orderer.yaml up -d
2） 启动peer
# docker-compose -f docker-peer.yaml up -d
3） 启动cli容器
# docker exec -it cli bash
4） 创建Channel
# ORDERER_CA=/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/ordererOrganizations/example.com/orderers/orderer.example.com/msp/tlscacerts/tlsca.example.com-cert.pem # peer channel create -o orderer.example.com:7050 -c mychannel -f ./channel-artifacts/mychannel.tx --tls --cafile $ORDERER_CA
5） Peer加入Channel
# peer channel join -b mychannel.block
9.3.10 安装与运行智能合约
1） 安装智能合约
# peer chaincode install -n mycc -p github.com/hyperledger/fabric/helloworld/chaincode/go/helloworld/cmd -v 1.0
2） 实例化智能合约
# peer chaincode instantiate -o orderer.example.com:7050 --tls --cafile $ORDERER_CA -C mychannel -n mycc -v 1.0 -c '{"Args":["a","helloworld"]}' -P "OR ('Org1MSP.peer')"
3） Peer上查询A，显示Helloworld
# peer chaincode query -C mychannel -n mycc -c '{"Args":["get","a"]}'
完成后显示如下图所示：
图：Helloworld完成图
