fabric-1.0.6，多通道实现

原创文章，未经同意不得转载

fabric从1.0.0起就支持多通道技术，关于多通道的解释，本文不多赘述，可以自行google。

本文以 example的e2e_cli 为基础，在此上进行修改

需要注意的是，我在e2e_cli的基础上做了一定修改来启动fabric，如果照搬一下脚本，是运行不起来的，以下仅供参考


说明一下思路：

1、一条链对应：至少一个org，至少一个peer，至少一个chaincode

2、在一条链对应的基础上，对script.sh脚本进行修改


步骤：

1、已经执行 ./network_setup.sh up

2、修改 e2e_cli下 generateArtifacts.sh 为 generateNewChannel.sh（见下文）

3、修改 e2e_cli下script文件夹内的script.sh 为 script_new_channel.sh（见下文）

4、先在虚拟机上直接运行  ./generateNewChannel.sh [新通道名]

     后进入cli容器执行 ./script/script_new_channel.sh [新通道名] [新智能合约名]


generateNewChannel.sh

# author: Logan Tang 20180607-11:37 mail:39522361@qq.com
# usage: Generate configuration for new channel

CHANNEL_NAME=$1
DATE=`date '+%Y%m%d_%H%M%S'`

echo
echo " *** start create new channel configuration,time: $DATE,CHANNEL_NAME:$CHANNEL_NAME ***"
echo

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


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)}')

function printHelp () {
	echo "params error: arg1 should not be empty,arg1 for channel name"
}

function validateArgs () {
	if [ -z "${CHANNEL_NAME}" ]; then
				printHelp
		exit 1
	fi
}


## 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 HealthMSP   ##########"
	echo "#################################################################"
	$CONFIGTXGEN -profile TwoOrgsChannel -outputAnchorPeersUpdate ./channel-artifacts/HealthMSPanchors.tx -channelID $CHANNEL_NAME -asOrg HealthMSP

	echo
	echo "#################################################################"
	echo "#######    Generating anchor peer update for Org2MSP   ##########"
	echo "#################################################################"
	echo
}

validateArgs
generateChannelArtifacts

echo
echo " *** create new channel configuration success *** "
echo

script_new_channel.sh

# author: Logan Tang 20180607-11:37 mail:39522361@qq.com
# usage: Create new channel to container

CHANNEL_NAME="$1"
CHAINCODE_NAME="$2"
#: ${CHANNEL_NAME:="bgilifechain"}
: ${TIMEOUT:="60"}
COUNTER=1
MAX_RETRY=5
ORDERER_CA=/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/ordererOrganizations/bgiblockchain.com/orderers/orderer.bgiblockchain.com/msp/tlscacerts/tlsca.bgiblockchain.com-cert.pem

echo
echo "====== start create new channel ======"
echo "CHANNEL_NAME name : "$CHANNEL_NAME
echo "CHAINCODE_NAME name : "$CHAINCODE_NAME
echo

function printHelp () {
	echo "arg1/arg2 should not be empty,arg1 for channel name,arg2 for chaincode name"
}

function validateArgs () {
	if [ -z "${CHANNEL_NAME}" ]; then
				printHelp
		exit 1
	fi
	if [ -z "${CHAINCODE_NAME}" ]; then
				printHelp
		exit 1
	fi
}

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

setGlobals () {
		CORE_PEER_LOCALMSPID="HealthMSP"
		CORE_PEER_TLS_ROOTCERT_FILE=/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/peerOrganizations/health.bgiblockchain.com/peers/peer0.health.bgiblockchain.com/tls/ca.crt
		CORE_PEER_MSPCONFIGPATH=/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/peerOrganizations/health.bgiblockchain.com/users/Admin@health.bgiblockchain.com/msp
		if [ $1 -eq 0 ]; then 
			CORE_PEER_ADDRESS=peer0.health.bgiblockchain.com:7051
		elif [ $1 -eq 1 ]; then
			CORE_PEER_ADDRESS=peer1.health.bgiblockchain.com:7051
		elif [ $1 -eq 2 ]; then
			CORE_PEER_ADDRESS=peer2.health.bgiblockchain.com:7151
		elif [ $1 -eq 3 ]; then
			CORE_PEER_ADDRESS=peer3.health.bgiblockchain.com:7151
		elif [ $1 -eq 4 ]; then
			CORE_PEER_ADDRESS=peer4.health.bgiblockchain.com:7251
		elif [ $1 -eq 5 ]; then
			CORE_PEER_ADDRESS=peer5.health.bgiblockchain.com:7251
		elif [ $1 -eq 6 ]; then
			CORE_PEER_ADDRESS=peer6.health.bgiblockchain.com:7351
		else
			CORE_PEER_ADDRESS=peer7.health.bgiblockchain.com:7351
		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.bgiblockchain.com:7050 -c $CHANNEL_NAME -f ./channel-artifacts/channel.tx >&log.txt
	else
		peer channel create -o orderer.bgiblockchain.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.bgiblockchain.com:7050 -c $CHANNEL_NAME -f ./channel-artifacts/${CORE_PEER_LOCALMSPID}anchors.tx >&log.txt
	else
		peer channel update -o orderer.bgiblockchain.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 4 5 6 7; 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 $CHAINCODE_NAME -v 1.0 -p github.com/hyperledger/fabric/examples/chaincode/go/chaincode_example02 >&log.txt
	res=$?
	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.bgiblockchain.com:7050 -C $CHANNEL_NAME -n $CHAINCODE_NAME -v 1.0 -c '{"Args":["init","a","100","b","200"]}' -P "OR	('HealthMSP.member')" >&log.txt
	else
		peer chaincode instantiate -o orderer.bgiblockchain.com:7050 --tls $CORE_PEER_TLS_ENABLED --cafile $ORDERER_CA -C $CHANNEL_NAME -n $CHAINCODE_NAME -v 1.0 -c '{"Args":["init","a","100","b","200"]}' -P "OR	('HealthMSP.member')" >&log.txt
	fi
	res=$?
	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 $CHAINCODE_NAME -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.bgiblockchain.com:7050 -C $CHANNEL_NAME -n $CHAINCODE_NAME -c '{"Args":["invoke","a","b","10"]}' >&log.txt
	else
		peer chaincode invoke -o orderer.bgiblockchain.com:7050  --tls $CORE_PEER_TLS_ENABLED --cafile $ORDERER_CA -C $CHANNEL_NAME -n $CHAINCODE_NAME -c '{"Args":["invoke","a","b","10"]}' >&log.txt
	fi
	res=$?
	cat log.txt
	verifyResult $res "Invoke execution on PEER$PEER failed "
	echo "===================== Invoke transaction on PEER$PEER on channel '$CHANNEL_NAME' is successful ===================== "
	echo
}

validateArgs

## 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/Health 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/Health
echo "Querying chaincode on org1/peer0..."
chaincodeQuery 0 100

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

## Install chaincode on Peer3/Org2
echo "Installing chaincode on org2/peer3..."
installChaincode 1
installChaincode 3
installChaincode 4
installChaincode 5
installChaincode 6
installChaincode 7

#Query on chaincode on Peer3/Org2, check if the result is 90
echo "Querying chaincode on org2/peer3..."
chaincodeQuery 1 90


echo
echo "===================== All GOOD ===================== "
echo

exit 0
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