粗略分析hyperledger-fabric之e2e_cli是如何开启网络

一、sudo ./network_setup.sh up

这条命令是如何为我们开启网络？通过几天的查看，我大致理清了他的顺序。在这里分享出来，如有不对，还望指出。
我们还是先看看这个shell文本里的内容：

#!/bin/bash
#
# Copyright IBM Corp. All Rights Reserved.
#
# SPDX-License-Identifier: Apache-2.0
#


UP_DOWN="$1"
CH_NAME="$2"
CLI_TIMEOUT="$3"
IF_COUCHDB="$4"

: ${CLI_TIMEOUT:="10000"}

COMPOSE_FILE=docker-compose-cli.yaml
COMPOSE_FILE_COUCH=docker-compose-couch.yaml
#COMPOSE_FILE=docker-compose-e2e.yaml

function printHelp () {
    echo "Usage: ./network_setup <up|down> <\$channel-name> <\$cli_timeout> <couchdb>.\nThe arguments must be in order."
}

function validateArgs () {
    if [ -z "${UP_DOWN}" ]; then
        echo "Option up / down / restart not mentioned"
        printHelp
        exit 1
    fi
    if [ -z "${CH_NAME}" ]; then
        echo "setting to default channel 'mychannel'"
        CH_NAME=mychannel
    fi
}

function clearContainers () {
        CONTAINER_IDS=$(docker ps -aq)
        if [ -z "$CONTAINER_IDS" -o "$CONTAINER_IDS" = " " ]; then
                echo "---- No containers available for deletion ----"
        else
                docker rm -f $CONTAINER_IDS
        fi
}

function removeUnwantedImages() {
        DOCKER_IMAGE_IDS=$(docker images | grep "dev\|none\|test-vp\|peer[0-9]-" | awk '{print $3}')
        if [ -z "$DOCKER_IMAGE_IDS" -o "$DOCKER_IMAGE_IDS" = " " ]; then
                echo "---- No images available for deletion ----"
        else
                docker rmi -f $DOCKER_IMAGE_IDS
        fi
}

function networkUp () {
    if [ -f "./crypto-config" ]; then
      echo "crypto-config directory already exists."
    else
      #Generate all the artifacts that includes org certs, orderer genesis block,
      # channel configuration transaction
      source generateArtifacts.sh $CH_NAME
    fi

    if [ "${IF_COUCHDB}" == "couchdb" ]; then
      CHANNEL_NAME=$CH_NAME TIMEOUT=$CLI_TIMEOUT docker-compose -f $COMPOSE_FILE -f $COMPOSE_FILE_COUCH up -d 2>&1
    else
      CHANNEL_NAME=$CH_NAME TIMEOUT=$CLI_TIMEOUT docker-compose -f $COMPOSE_FILE up -d 2>&1
    fi
    if [ $? -ne 0 ]; then
    echo "ERROR !!!! Unable to pull the images "
    exit 1
    fi
    docker logs -f cli
}

function networkDown () {
    docker-compose -f $COMPOSE_FILE down

    #Cleanup the chaincode containers
    clearContainers

    #Cleanup images
    removeUnwantedImages

    # remove orderer block and other channel configuration transactions and certs
    rm -rf channel-artifacts/*.block channel-artifacts/*.tx crypto-config
}

validateArgs

#Create the network using docker compose
if [ "${UP_DOWN}" == "up" ]; then
    networkUp
elif [ "${UP_DOWN}" == "down" ]; then ## Clear the network
    networkDown 
elif [ "${UP_DOWN}" == "restart" ]; then ## Restart the network
    networkDown
    networkUp
else
    printHelp
    exit 1
fi

阅读这个shell需要一些基础，我也是刚看完shell的一些基本语法才勉强理解，下面我用一张图表示他的启动顺序。

那么这里面最关键的地方有那些呢？首先这条语句：

source generateArtifacts.sh $CH_NAME

无形之间将我们带到了另一个shell文本，那就是同目录下的generateArtifacts.sh，下面我们接着往下看。

#!/bin/bash +x
#
# Copyright IBM Corp. All Rights Reserved.
#
# SPDX-License-Identifier: Apache-2.0
#


#set -e

CHANNEL_NAME=$1
: ${CHANNEL_NAME:="mychannel"}
echo $CHANNEL_NAME

export FABRIC_ROOT=$PWD/../..
export FABRIC_CFG_PATH=$PWD
echo

OS_ARCH=$(echo "$(uname -s|tr '[:upper:]' '[:lower:]'|sed 's/mingw64_nt.*/windows/')-$(uname -m | sed 's/x86_64/amd64/g')" | awk '{print tolower($0)}')

## Using docker-compose template replace private key file names with constants
function replacePrivateKey () {
    ARCH=`uname -s | grep Darwin`
    if [ "$ARCH" == "Darwin" ]; then
        OPTS="-it"
    else
        OPTS="-i"
    fi

    cp docker-compose-e2e-template.yaml docker-compose-e2e.yaml

        CURRENT_DIR=$PWD
        cd crypto-config/peerOrganizations/org1.example.com/ca/
        PRIV_KEY=$(ls *_sk)
        cd $CURRENT_DIR
        sed $OPTS "s/CA1_PRIVATE_KEY/${PRIV_KEY}/g" docker-compose-e2e.yaml
        cd crypto-config/peerOrganizations/org2.example.com/ca/
        PRIV_KEY=$(ls *_sk)
        cd $CURRENT_DIR
        sed $OPTS "s/CA2_PRIVATE_KEY/${PRIV_KEY}/g" docker-compose-e2e.yaml
}

## Generates Org certs using cryptogen tool
function generateCerts (){
    CRYPTOGEN=$FABRIC_ROOT/release/$OS_ARCH/bin/cryptogen

    if [ -f "$CRYPTOGEN" ]; then
            echo "Using cryptogen -> $CRYPTOGEN"
    else
        echo "Building cryptogen"
        make -C $FABRIC_ROOT release
    fi

    echo
    echo "##########################################################"
    echo "##### Generate certificates using cryptogen tool #########"
    echo "##########################################################"
    $CRYPTOGEN generate --config=./crypto-config.yaml
    echo
}

## Generate orderer genesis block , channel configuration transaction and anchor peer update transactions
function generateChannelArtifacts() {

    CONFIGTXGEN=$FABRIC_ROOT/release/$OS_ARCH/bin/configtxgen
    if [ -f "$CONFIGTXGEN" ]; then
            echo "Using configtxgen -> $CONFIGTXGEN"
    else
        echo "Building configtxgen"
        make -C $FABRIC_ROOT release
    fi

    echo "##########################################################"
    echo "#########  Generating Orderer Genesis block ##############"
    echo "##########################################################"
    # Note: For some unknown reason (at least for now) the block file can't be
    # named orderer.genesis.block or the orderer will fail to launch!
    $CONFIGTXGEN -profile TwoOrgsOrdererGenesis -outputBlock ./channel-artifacts/genesis.block

    echo
    echo "#################################################################"
    echo "### Generating channel configuration transaction 'channel.tx' ###"
    echo "#################################################################"
    $CONFIGTXGEN -profile TwoOrgsChannel -outputCreateChannelTx ./channel-artifacts/channel.tx -channelID $CHANNEL_NAME

    echo
    echo "#################################################################"
    echo "#######    Generating anchor peer update for Org1MSP   ##########"
    echo "#################################################################"
    $CONFIGTXGEN -profile TwoOrgsChannel -outputAnchorPeersUpdate ./channel-artifacts/Org1MSPanchors.tx -channelID $CHANNEL_NAME -asOrg Org1MSP

    echo
    echo "#################################################################"
    echo "#######    Generating anchor peer update for Org2MSP   ##########"
    echo "#################################################################"
    $CONFIGTXGEN -profile TwoOrgsChannel -outputAnchorPeersUpdate ./channel-artifacts/Org2MSPanchors.tx -channelID $CHANNEL_NAME -asOrg Org2MSP
    echo
}

generateCerts
replacePrivateKey
generateChannelArtifacts

此文件主要是用来生成主要的配置文件如私钥和证书，有通道证书之类的。下面这张图是它执行的顺序。

其次语句：

CHANNEL_NAME=$CH_NAME TIMEOUT=$CLI_TIMEOUT docker-compose -f $COMPOSE_FILE up -d 2>&1

其实就是：docker-compose -f docker-compose-cli.yaml up是不是感觉很熟悉呢？接下来我们接着看docker-compose-cli.yaml文件。

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

version: '2'

services:

  orderer.example.com:
    extends:
      file:   base/docker-compose-base.yaml
      service: orderer.example.com
    container_name: orderer.example.com

  peer0.org1.example.com:
    container_name: peer0.org1.example.com
    #environment:
      #- CORE_LEDGER_STATE_STATEDATABASE=CouchDB
      #- CORE_LEDGER_STATE_COUCHDBCONFIG_COUCHDBADDRESS=peer0.org1.example.com:5984
      #- CORE_LEDGER_STATE_COUCHDBCONFIG_USERNAME=admin
      #- CORE_LEDGER_STATE_COUCHDBCONFIG_PASSWORD=password
    extends:
      file:  base/docker-compose-base.yaml
      service: peer0.org1.example.com

  peer1.org1.example.com:
    container_name: peer1.org1.example.com
    #environment:
      #- CORE_LEDGER_STATE_STATEDATABASE=CouchDB
      #- CORE_LEDGER_STATE_COUCHDBCONFIG_COUCHDBADDRESS=peer1.org1.example.com:5984
      #- CORE_LEDGER_STATE_COUCHDBCONFIG_USERNAME=admin
      #- CORE_LEDGER_STATE_COUCHDBCONFIG_PASSWORD=password
    extends:
      file:  base/docker-compose-base.yaml
      service: peer1.org1.example.com

  peer0.org2.example.com:
    container_name: peer0.org2.example.com
    #environment:
      #- CORE_LEDGER_STATE_STATEDATABASE=CouchDB
      #- CORE_LEDGER_STATE_COUCHDBCONFIG_COUCHDBADDRESS=peer0.org2.example.com:5984
      #- CORE_LEDGER_STATE_COUCHDBCONFIG_USERNAME=admin
      #- CORE_LEDGER_STATE_COUCHDBCONFIG_PASSWORD=password
    extends:
      file:  base/docker-compose-base.yaml
      service: peer0.org2.example.com

  peer1.org2.example.com:
    container_name: peer1.org2.example.com
    #environment:
      #- CORE_LEDGER_STATE_STATEDATABASE=CouchDB
      #- CORE_LEDGER_STATE_COUCHDBCONFIG_COUCHDBADDRESS=peer1.org2.example.com:5984
      #- CORE_LEDGER_STATE_COUCHDBCONFIG_USERNAME=admin
      #- CORE_LEDGER_STATE_COUCHDBCONFIG_PASSWORD=password
    extends:
      file:  base/docker-compose-base.yaml
      service: peer1.org2.example.com

  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/Admin@org1.example.com/msp
    working_dir: /opt/gopath/src/github.com/hyperledger/fabric/peer
    command: /bin/bash -c './scripts/script.sh ${CHANNEL_NAME}; sleep $TIMEOUT'
    volumes:
        - /var/run/:/host/var/run/
        - ../chaincode/go/:/opt/gopath/src/github.com/hyperledger/fabric/examples/chaincode/go
        - ./crypto-config:/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/
        - ./scripts:/opt/gopath/src/github.com/hyperledger/fabric/peer/scripts/
        - ./channel-artifacts:/opt/gopath/src/github.com/hyperledger/fabric/peer/channel-artifacts
    depends_on:
      - orderer.example.com
      - peer0.org1.example.com
      - peer1.org1.example.com
      - peer0.org2.example.com
      - peer1.org2.example.com

这个文件的作用就是启动一系列的容器，当你看到下面内容的时候，就是此配置文件的作用：

Creating peer1.org2.example.com ... done
Creating cli ... done
Creating orderer.example.com ...
Creating peer0.org2.example.com ...
Creating peer1.org1.example.com ...
Creating peer0.org1.example.com ...
Creating cli ...

这个配置文件中还有一个地方需要我们关注，那就是：base/docker-compose-base.yaml，我们接着看看当前目录下的base文件夹里的docker-compose-base.yaml文件。

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

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

  peer0.org1.example.com:
    container_name: peer0.org1.example.com
    extends:
      file: peer-base.yaml
      service: peer-base
    environment:
      - CORE_PEER_ID=peer0.org1.example.com
      - CORE_PEER_ADDRESS=peer0.org1.example.com:7051
      - CORE_PEER_CHAINCODELISTENADDRESS=peer0.org1.example.com:7052
      - CORE_PEER_GOSSIP_EXTERNALENDPOINT=peer0.org1.example.com:7051
      - CORE_PEER_LOCALMSPID=Org1MSP
    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
    ports:
      - 7051:7051
      - 7052:7052
      - 7053:7053

  peer1.org1.example.com:
    container_name: peer1.org1.example.com
    extends:
      file: peer-base.yaml
      service: peer-base
    environment:
      - CORE_PEER_ID=peer1.org1.example.com
      - CORE_PEER_ADDRESS=peer1.org1.example.com:7051
      - CORE_PEER_CHAINCODELISTENADDRESS=peer1.org1.example.com:7052
      - CORE_PEER_GOSSIP_EXTERNALENDPOINT=peer1.org1.example.com:7051
      - CORE_PEER_GOSSIP_BOOTSTRAP=peer0.org1.example.com:7051
      - CORE_PEER_LOCALMSPID=Org1MSP
    volumes:
        - /var/run/:/host/var/run/
        - ../crypto-config/peerOrganizations/org1.example.com/peers/peer1.org1.example.com/msp:/etc/hyperledger/fabric/msp
        - ../crypto-config/peerOrganizations/org1.example.com/peers/peer1.org1.example.com/tls:/etc/hyperledger/fabric/tls

    ports:
      - 8051:7051
      - 8052:7052
      - 8053:7053

  peer0.org2.example.com:
    container_name: peer0.org2.example.com
    extends:
      file: peer-base.yaml
      service: peer-base
    environment:
      - CORE_PEER_ID=peer0.org2.example.com
      - CORE_PEER_ADDRESS=peer0.org2.example.com:7051
      - CORE_PEER_CHAINCODELISTENADDRESS=peer0.org2.example.com:7052
      - CORE_PEER_GOSSIP_EXTERNALENDPOINT=peer0.org2.example.com:7051
      - CORE_PEER_LOCALMSPID=Org2MSP
    volumes:
        - /var/run/:/host/var/run/
        - ../crypto-config/peerOrganizations/org2.example.com/peers/peer0.org2.example.com/msp:/etc/hyperledger/fabric/msp
        - ../crypto-config/peerOrganizations/org2.example.com/peers/peer0.org2.example.com/tls:/etc/hyperledger/fabric/tls
    ports:
      - 9051:7051
      - 9052:7052
      - 9053:7053

  peer1.org2.example.com:
    container_name: peer1.org2.example.com
    extends:
      file: peer-base.yaml
      service: peer-base
    environment:
      - CORE_PEER_ID=peer1.org2.example.com
      - CORE_PEER_ADDRESS=peer1.org2.example.com:7051
      - CORE_PEER_CHAINCODELISTENADDRESS=peer1.org2.example.com:7052
      - CORE_PEER_GOSSIP_EXTERNALENDPOINT=peer1.org2.example.com:7051
      - CORE_PEER_GOSSIP_BOOTSTRAP=peer0.org2.example.com:7051
      - CORE_PEER_LOCALMSPID=Org2MSP
    volumes:
        - /var/run/:/host/var/run/
        - ../crypto-config/peerOrganizations/org2.example.com/peers/peer1.org2.example.com/msp:/etc/hyperledger/fabric/msp
        - ../crypto-config/peerOrganizations/org2.example.com/peers/peer1.org2.example.com/tls:/etc/hyperledger/fabric/tls
    ports:
      - 10051:7051
      - 10052:7052
      - 10053:7053

这个配置文件就比较明显了，Orderer和peer的配置文件，细心的你肯定也发现了file: peer-base.yaml，那就看看同目录下的peer-base.yaml文件吧。

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

version: '2'
services:
  peer-base:
    image: hyperledger/fabric-peer
    environment:
      - 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=e2ecli_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
    working_dir: /opt/gopath/src/github.com/hyperledger/fabric/peer
    command: peer node start

这我就不多解释了。
最后还有一个文件，在刚才的docker-compose-cli.yaml文件中有一句`command: /bin/bash -c './scripts/script.sh ${CHANNEL_NAME}; sleep $TIMEOUT'什么意思呢？就是./scripts/script.sh这个shell脚本生效，一起去看看吧。

#!/bin/bash
# Copyright London Stock Exchange Group All Rights Reserved.
#
# SPDX-License-Identifier: Apache-2.0
#
echo
echo " ____    _____      _      ____    _____           _____   ____    _____ "
echo "/ ___|  |_   _|    / \    |  _ \  |_   _|         | ____| |___ \  | ____|"
echo "\___ \    | |     / _ \   | |_) |   | |    _____  |  _|     __) | |  _|  "
echo " ___) |   | |    / ___ \  |  _ <    | |   |_____| | |___   / __/  | |___ "
echo "|____/    |_|   /_/   \_\ |_| \_\   |_|           |_____| |_____| |_____|"
echo

CHANNEL_NAME="$1"
: ${CHANNEL_NAME:="mychannel"}
: ${TIMEOUT:="60"}
COUNTER=1
MAX_RETRY=5
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

echo "Channel name : "$CHANNEL_NAME

verifyResult () {
    if [ $1 -ne 0 ] ; then
        echo "!!!!!!!!!!!!!!! "$2" !!!!!!!!!!!!!!!!"
                echo "================== ERROR !!! FAILED to execute End-2-End Scenario =================="
        echo
        exit 1
    fi
}

setGlobals () {

    if [ $1 -eq 0 -o $1 -eq 1 ] ; then
        CORE_PEER_LOCALMSPID="Org1MSP"
        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
        if [ $1 -eq 0 ]; then
            CORE_PEER_ADDRESS=peer0.org1.example.com:7051
        else
            CORE_PEER_ADDRESS=peer1.org1.example.com:7051
        fi
    else
        CORE_PEER_LOCALMSPID="Org2MSP"
        CORE_PEER_TLS_ROOTCERT_FILE=/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/peerOrganizations/org2.example.com/peers/peer0.org2.example.com/tls/ca.crt
        CORE_PEER_MSPCONFIGPATH=/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/peerOrganizations/org2.example.com/users/[email protected]/msp
        if [ $1 -eq 2 ]; then
            CORE_PEER_ADDRESS=peer0.org2.example.com:7051
        else
            CORE_PEER_ADDRESS=peer1.org2.example.com:7051
        fi
    fi

    env |grep CORE
}

createChannel() {
    setGlobals 0

        if [ -z "$CORE_PEER_TLS_ENABLED" -o "$CORE_PEER_TLS_ENABLED" = "false" ]; then
        peer channel create -o orderer.example.com:7050 -c $CHANNEL_NAME -f ./channel-artifacts/channel.tx >&log.txt
    else
        peer channel create -o orderer.example.com:7050 -c $CHANNEL_NAME -f ./channel-artifacts/channel.tx --tls $CORE_PEER_TLS_ENABLED --cafile $ORDERER_CA >&log.txt
    fi
    res=$?
    cat log.txt
    verifyResult $res "Channel creation failed"
    echo "===================== Channel \"$CHANNEL_NAME\" is created successfully ===================== "
    echo
}

updateAnchorPeers() {
        PEER=$1
        setGlobals $PEER

        if [ -z "$CORE_PEER_TLS_ENABLED" -o "$CORE_PEER_TLS_ENABLED" = "false" ]; then
        peer channel update -o orderer.example.com:7050 -c $CHANNEL_NAME -f ./channel-artifacts/${CORE_PEER_LOCALMSPID}anchors.tx >&log.txt
    else
        peer channel update -o orderer.example.com:7050 -c $CHANNEL_NAME -f ./channel-artifacts/${CORE_PEER_LOCALMSPID}anchors.tx --tls $CORE_PEER_TLS_ENABLED --cafile $ORDERER_CA >&log.txt
    fi
    res=$?
    cat log.txt
    verifyResult $res "Anchor peer update failed"
    echo "===================== Anchor peers for org \"$CORE_PEER_LOCALMSPID\" on \"$CHANNEL_NAME\" is updated successfully ===================== "
    sleep 5
    echo
}

## Sometimes Join takes time hence RETRY atleast for 5 times
joinWithRetry () {
    peer channel join -b $CHANNEL_NAME.block  >&log.txt
    res=$?
    cat log.txt
    if [ $res -ne 0 -a $COUNTER -lt $MAX_RETRY ]; then
        COUNTER=` expr $COUNTER + 1`
        echo "PEER$1 failed to join the channel, Retry after 2 seconds"
        sleep 2
        joinWithRetry $1
    else
        COUNTER=1
    fi
        verifyResult $res "After $MAX_RETRY attempts, PEER$ch has failed to Join the Channel"
}

joinChannel () {
    for ch in 0 1 2 3; do
        setGlobals $ch
        joinWithRetry $ch
        echo "===================== PEER$ch joined on the channel \"$CHANNEL_NAME\" ===================== "
        sleep 2
        echo
    done
}

installChaincode () {
    PEER=$1
    setGlobals $PEER
    peer chaincode install -n mycc -v 1.0 -p github.com/hyperledger/fabric/examples/chaincode/go/chaincode_example02 >&log.txt
    res=$?
    cat log.txt
        verifyResult $res "Chaincode installation on remote peer PEER$PEER has Failed"
    echo "===================== Chaincode is installed on remote peer PEER$PEER ===================== "
    echo
}

instantiateChaincode () {
    PEER=$1
    setGlobals $PEER
    # while 'peer chaincode' command can get the orderer endpoint from the peer (if join was successful),
    # lets supply it directly as we know it using the "-o" option
    if [ -z "$CORE_PEER_TLS_ENABLED" -o "$CORE_PEER_TLS_ENABLED" = "false" ]; then
        peer chaincode instantiate -o orderer.example.com:7050 -C $CHANNEL_NAME -n mycc -v 1.0 -c '{"Args":["init","a","100","b","200"]}' -P "OR   ('Org1MSP.member','Org2MSP.member')" >&log.txt
    else
        peer chaincode instantiate -o orderer.example.com:7050 --tls $CORE_PEER_TLS_ENABLED --cafile $ORDERER_CA -C $CHANNEL_NAME -n mycc -v 1.0 -c '{"Args":["init","a","100","b","200"]}' -P "OR    ('Org1MSP.member','Org2MSP.member')" >&log.txt
    fi
    res=$?
    cat log.txt
    verifyResult $res "Chaincode instantiation on PEER$PEER on channel '$CHANNEL_NAME' failed"
    echo "===================== Chaincode Instantiation on PEER$PEER on channel '$CHANNEL_NAME' is successful ===================== "
    echo
}

chaincodeQuery () {
  PEER=$1
  echo "===================== Querying on PEER$PEER on channel '$CHANNEL_NAME'... ===================== "
  setGlobals $PEER
  local rc=1
  local starttime=$(date +%s)

  # continue to poll
  # we either get a successful response, or reach TIMEOUT
  while test "$(($(date +%s)-starttime))" -lt "$TIMEOUT" -a $rc -ne 0
  do
     sleep 3
     echo "Attempting to Query PEER$PEER ...$(($(date +%s)-starttime)) secs"
     peer chaincode query -C $CHANNEL_NAME -n mycc -c '{"Args":["query","a"]}' >&log.txt
     test $? -eq 0 && VALUE=$(cat log.txt | awk '/Query Result/ {print $NF}')
     test "$VALUE" = "$2" && let rc=0
  done
  echo
  cat log.txt
  if test $rc -eq 0 ; then
    echo "===================== Query on PEER$PEER on channel '$CHANNEL_NAME' is successful ===================== "
  else
    echo "!!!!!!!!!!!!!!! Query result on PEER$PEER is INVALID !!!!!!!!!!!!!!!!"
        echo "================== ERROR !!! FAILED to execute End-2-End Scenario =================="
    echo
    exit 1
  fi
}

chaincodeInvoke () {
    PEER=$1
    setGlobals $PEER
    # while 'peer chaincode' command can get the orderer endpoint from the peer (if join was successful),
    # lets supply it directly as we know it using the "-o" option
    if [ -z "$CORE_PEER_TLS_ENABLED" -o "$CORE_PEER_TLS_ENABLED" = "false" ]; then
        peer chaincode invoke -o orderer.example.com:7050 -C $CHANNEL_NAME -n mycc -c '{"Args":["invoke","a","b","10"]}' >&log.txt
    else
        peer chaincode invoke -o orderer.example.com:7050  --tls $CORE_PEER_TLS_ENABLED --cafile $ORDERER_CA -C $CHANNEL_NAME -n mycc -c '{"Args":["invoke","a","b","10"]}' >&log.txt
    fi
    res=$?
    cat log.txt
    verifyResult $res "Invoke execution on PEER$PEER failed "
    echo "===================== Invoke transaction on PEER$PEER on channel '$CHANNEL_NAME' is successful ===================== "
    echo
}

## Create channel
echo "Creating channel..."
createChannel

## Join all the peers to the channel
echo "Having all peers join the channel..."
joinChannel

## Set the anchor peers for each org in the channel
echo "Updating anchor peers for org1..."
updateAnchorPeers 0
echo "Updating anchor peers for org2..."
updateAnchorPeers 2

## Install chaincode on Peer0/Org1 and Peer2/Org2
echo "Installing chaincode on org1/peer0..."
installChaincode 0
echo "Install chaincode on org2/peer2..."
installChaincode 2

#Instantiate chaincode on Peer2/Org2
echo "Instantiating chaincode on org2/peer2..."
instantiateChaincode 2

#Query on chaincode on Peer0/Org1
echo "Querying chaincode on org1/peer0..."
chaincodeQuery 0 100

#Invoke on chaincode on Peer0/Org1
echo "Sending invoke transaction on org1/peer0..."
chaincodeInvoke 0

## Install chaincode on Peer3/Org2
echo "Installing chaincode on org2/peer3..."
installChaincode 3

#Query on chaincode on Peer3/Org2, check if the result is 90
echo "Querying chaincode on org2/peer3..."
chaincodeQuery 3 90

echo
echo "===================== All GOOD, End-2-End execution completed ===================== "
echo

echo
echo " _____   _   _   ____            _____   ____    _____ "
echo "| ____| | \ | | |  _ \          | ____| |___ \  | ____|"
echo "|  _|   |  \| | | | | |  _____  |  _|     __) | |  _|  "
echo "| |___  | |\  | | |_| | |_____| | |___   / __/  | |___ "
echo "|_____| |_| \_| |____/          |_____| |_____| |_____|"
echo

exit 0

我觉得终于到了你最希望看得的地方了，对于初学者而言的我们，看到good的时候就会心情很好，对吧？前面都为我们准备好了各节点，创世块，证书等内容！在这里这个文件为我们创建通道并且让各peer节点加入通道，安装、初始化、query准备好的chaincode！下图就是大致过程。

文件夹下还有许多的其他配置文件，其中如图。

下面用一张图总结一下：

大致过程基本如上，但感觉还差了一点什么！批评指正，批评指正！