Fabric启动网络日志和示例代码解析二

script.sh

fabric-samples/first-network/scripts/script.sh

#!/bin/bash

echo
echo " ____    _____      _      ____    _____ "
echo "/ ___|  |_   _|    /     |  _   |_   _|"
echo "\___     | |     / _    | |_) |   | |  "
echo " ___) |   | |    / ___   |  _ <    | |  "
echo "|____/    |_|   /_/   \_ |_| \_   |_|  "
echo
echo "Build your first network (BYFN) end-to-end test"
echo
CHANNEL_NAME="$1"
DELAY="$2"
: ${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

# verify the result of the end-to-end test
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/Admin@org1.example.com/msp
        if [ $1 -eq 0 ]; then
            CORE_PEER_ADDRESS=peer0.org1.example.com:7051
        else
            CORE_PEER_ADDRESS=peer1.org1.example.com:7051
            CORE_PEER_MSPCONFIGPATH=/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/peerOrganizations/org1.example.com/users/Admin@org1.example.com/msp
        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/Admin@org2.example.com/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 $DELAY
    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 $DELAY
        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 $DELAY
        echo
    done
}

installChaincode () {
    PEER=$1
    setGlobals $PEER
    # 1. 通过peer chaincode install把链码安装到区块链上，本质上和安装应用程序是没有区别的，只不过平时是把程序安装到操作系统上，而这里是把链码安装到区块链上，链码安装没有做什么特别的事情，仅仅是对链码进行打包，然后上传到区块链上的某一个节点上，真正意义上的安装是下面的初始化操作 instantiaChaincode（）
　　 peer chaincode install -n mycc -v 1.0 -p github.com/hyperledger/fabric/examples/chaincode/go/chaincode_example02 >&log.txt
    res=$?
    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
    
　　 # peer chaincode instantiate 有两个参数，a:100,b:200,这两个参数就是Init（）函数接收的A和B两个参数，A=a,B=b,值是100和200，Init函数执行完之后，相当于在区块链上初始化了2个账户，给他们分别打了100块钱和200块钱，前面文章启动网络日志，里面有一个query日志，查询结果是Query Result：100，之所以日志显示得结果是100而不是200，是因为下面chaincodeQuery()查询得a账户，而a账户初始化的时候是100块钱，查询返回的结果是100是正常的
　　 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 $DELAY
     echo "Attempting to Query PEER$PEER ...$(($(date +%s)-starttime)) secs"
     # 查询的 a账户
　　  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
       # invoke，参数意思事a账户往b账户转10块钱 
　　　　 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, BYFN execution completed =========== "
echo

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

exit 0