[Fabric]-First-Network（script.sh檔案詳解）-有解無憂

推薦fabric命令查詢地址：看不懂可以直接查 fabric命令手冊，

我理解的也沒多好，新手上路，希望大家看到的可以指點一下，

文章目錄

- 一、script.sh
- 二、utils.sh方法
- - 1. 公用的資訊
  - 2. 檢測
  - 3. 設定OrdererOrg.Admin全域
  - 4. 設定全域
  - 5. 更新錨節點
  - 6. 加入通道
  - 7. 安裝鏈碼
  - 8. 實體化鏈碼
  - 9. 升級鏈碼
  - 10. 查詢鏈碼
  - 11. 將給定通道的配置寫入json
  - 12. 更新簽名
  - 13. 更新配置資訊
  - 14. peer鏈接的引數
  - 15. 初始化鏈碼

一、script.sh

#!/bin/bash
echo
echo " ____    _____      _      ____    _____ "
echo "/ ___|  |_   _|    / \    |  _ \  |_   _|"
echo "\___ \    | |     / _ \   | |_) |   | |  "
echo " ___) |   | |    / ___ \  |  _ <    | |  "
echo "|____/    |_|   /_/   \_\ |_| \_\   |_|  "
echo
echo "構建第一個測驗網路"
echo "獲取6個輸入引數 通道名稱  延遲 語言 結束時間 詳情 沒有鏈碼 "
CHANNEL_NAME="$1"
DELAY="$2"
LANGUAGE="$3"
TIMEOUT="$4"
VERBOSE="$5"
NO_CHAINCODE="$6"
#沒有初始化值就進行賦值
: ${CHANNEL_NAME:="mychannel"}
: ${DELAY:="3"}
: ${LANGUAGE:="golang"}
: ${TIMEOUT:="10"}
: ${VERBOSE:="false"}
: ${NO_CHAINCODE:="false"}
# 大小寫轉換
LANGUAGE=`echo "$LANGUAGE" | tr [:upper:] [:lower:]`
counter=1
# 最大重試次數
max_retry=10
# 原始碼路徑
CC_SRC_PATH="github.com/chaincode/chaincode_example02/go/"
echo $LANGUAGE
# 判斷語言，找到對應路徑
if [ "$LANGUAGE" = "node" ]; then
  CC_SRC_PATH="/opt/gopath/src/github.com/chaincode/chaincode_example02/node/"
fi

if [ "$LANGUAGE" = "java" ]; then
  CC_SRC_PATH="/opt/gopath/src/github.com/chaincode/chaincode_example02/java/"
fi

echo "通道的名字 : "$CHANNEL_NAME

# import utils
echo "引入utils.sh檔案，這個不需要權限"
. scripts/utils.sh

echo "執行創建通道函式"
createChannel() {
  [setGlobals](https://www.wolai.com/sRSSQXgqioxU9LW72BYuxU#9TrZv7UFE2vBofkf4Q4Yma) 0 1
    echo "判斷peer的tls是否禁用"
  if [ -z "$CORE_PEER_TLS_ENABLED" -o "$CORE_PEER_TLS_ENABLED" = "false" ]; then
                set -x
    echo "執行peer channel create 創建一個通道，并將創世塊寫入檔案中"
    echo "-o 指定了orderer -c 指定channel-ID -f 指定組態檔 channel.tx 輸出內容到 log.txt"
    peer channel create -o orderer.example.com:7050 -c $CHANNEL_NAME -f ./channel-artifacts/channel.tx >&log.txt
    echo "獲取執行結果"
    res=$?
                set +x
  else
      echo "peer 的tls沒有被禁用"
        set -xll

    peer channel create -o orderer.example.com:7050 -c $CHANNEL_NAME -f ./channel-artifacts/channel.tx --tls $CORE_PEER_TLS_ENABLED --cafile $ORDERER_CA >&log.txt
    res=$?
        set +x
  fi
  echo "查看log.txt"
  cat log.txt
  echo "$res 判斷，列印通道為創建"
  verifyResult $res "Channel creation failed"
  echo "===================== Channel '$CHANNEL_NAME' created ===================== "
  echo
}

echo "加入通道"
joinChannel () {
    echo "回圈1 2節點"
  for org in 1 2; do
      for peer in 0 1; do
      echo "執行加入通道的方法"
    [joinChannelWithRetry](https://www.wolai.com/sRSSQXgqioxU9LW72BYuxU#3vS9NKiqjwFCq8g78YdSUY) $peer $org
    echo "===================== peer${peer}.org${org} joined channel '$CHANNEL_NAME' ===================== "
    sleep $DELAY
    echo
      done
  done
}

## 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 "更新錨節點"
echo "Updating anchor peers for org1..."
[updateAnchorPeers](https://www.wolai.com/sRSSQXgqioxU9LW72BYuxU#wVxCjozLP9tYwWQ3BnD4Lg) 0 1
echo "Updating anchor peers for org2..."
[updateAnchorPeers](https://www.wolai.com/sRSSQXgqioxU9LW72BYuxU#wVxCjozLP9tYwWQ3BnD4Lg) 0 2

echo "判斷NO_CHAINCODE $NO_CHAINCODE"
echo "呼叫各種utils中的函式"
if [ "${NO_CHAINCODE}" != "true" ]; then

  ## Install chaincode on peer0.org1 and peer0.org2
  echo "Installing chaincode on peer0.org1..."
  [installChaincode ](https://www.wolai.com/sRSSQXgqioxU9LW72BYuxU#f7r6VKem9FKaU9epjPfPUN)0 1
  echo "Install chaincode on peer0.org2..."
  [installChaincode ](https://www.wolai.com/sRSSQXgqioxU9LW72BYuxU#f7r6VKem9FKaU9epjPfPUN)0 2

  # Instantiate chaincode on peer0.org2
  echo "Instantiating chaincode on peer0.org2..."
  [instantiateChaincode ](https://www.wolai.com/sRSSQXgqioxU9LW72BYuxU#3rgdd1ZqXLtocBzr2UcFgu)0 2

  # Query chaincode on peer0.org1
  echo "Querying chaincode on peer0.org1..."
  [chaincodeQuery ](https://www.wolai.com/sRSSQXgqioxU9LW72BYuxU#27GpmauTchhxtH2CEnMhd1)0 1 100

  # Invoke chaincode on peer0.org1 and peer0.org2
  echo "Sending invoke transaction on peer0.org1 peer0.org2..."
  [chaincodeInvoke](https://www.wolai.com/sRSSQXgqioxU9LW72BYuxU#6oDfi5W7zYrfYeCcJnXGwf)[ ](https://www.wolai.com/sRSSQXgqioxU9LW72BYuxU#6oDfi5W7zYrfYeCcJnXGwf)0 1 0 2

  ## Install chaincode on peer1.org2
  echo "Installing chaincode on peer1.org2..."
  installChaincode 1 2

  # Query on chaincode on peer1.org2, check if the result is 90
  echo "Querying chaincode on peer1.org2..."
  chaincodeQuery 1 2 90

fi

echo
echo "========= All GOOD, BYFN execution completed =========== "
echo
echo
echo " _____   _   _   ____   "
echo "| ____| | \ | | |  _ \  "
echo "|  _|   |  \| | | | | | "
echo "| |___  | |\  | | |_| | "
echo "|_____| |_| \_| |____/  "
echo

二、utils.sh方法

1. 公用的資訊

echo "先定義了orderer 和 3 個peer 的ca證書的位置"
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
PEER0_ORG1_CA=/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/peerOrganizations/org1.example.com/peers/peer0.org1.example.com/tls/ca.crt
PEER0_ORG2_CA=/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/peerOrganizations/org2.example.com/peers/peer0.org2.example.com/tls/ca.crt
PEER0_ORG3_CA=/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/peerOrganizations/org3.example.com/peers/peer0.org3.example.com/tls/ca.crt

2. 檢測

# verify the result of the end-to-end test
verifyResult() {
echo "verifyResult 創建e 2 e 使用"
  if [ $1 -ne 0 ]; then
    echo "!!!!!!!!!!!!!!! "$2" !!!!!!!!!!!!!!!!"
    echo "========= ERROR !!! FAILED to execute End-2-End Scenario ==========="
    echo
    exit 1
  fi
}

3. 設定OrdererOrg.Admin全域

# Set OrdererOrg.Admin globals
setOrdererGlobals() {
  CORE_PEER_LOCALMSPID="OrdererMSP"
  CORE_PEER_TLS_ROOTCERT_FILE=/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/ordererOrganizations/example.com/orderers/orderer.example.com/msp/tlscacerts/tlsca.example.com-cert.pem
  CORE_PEER_MSPCONFIGPATH=/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/ordererOrganizations/example.com/users/Admin@example.com/msp
}

4. 設定全域

setGlobals() {
  PEER=$1
  ORG=$2
  if [ $ORG -eq 1 ]; then
    # 定義peer 的msp 的位置 tls 啦
    CORE_PEER_LOCALMSPID="Org1MSP"
    CORE_PEER_TLS_ROOTCERT_FILE=$PEER0_ORG1_CA
    CORE_PEER_MSPCONFIGPATH=/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/peerOrganizations/org1.example.com/users/Admin@org1.example.com/msp
    if [ $PEER -eq 0 ]; then
      # 根據peer 0 1 定義 訪問名 ip:port
      CORE_PEER_ADDRESS=peer0.org1.example.com:7051
    else
      CORE_PEER_ADDRESS=peer1.org1.example.com:8051
    fi
  elif [ $ORG -eq 2 ]; then
    CORE_PEER_LOCALMSPID="Org2MSP"
    CORE_PEER_TLS_ROOTCERT_FILE=$PEER0_ORG2_CA
    CORE_PEER_MSPCONFIGPATH=/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/peerOrganizations/org2.example.com/users/Admin@org2.example.com/msp
    if [ $PEER -eq 0 ]; then
      CORE_PEER_ADDRESS=peer0.org2.example.com:9051
    else
      CORE_PEER_ADDRESS=peer1.org2.example.com:10051
    fi

  elif [ $ORG -eq 3 ]; then
    CORE_PEER_LOCALMSPID="Org3MSP"
    CORE_PEER_TLS_ROOTCERT_FILE=$PEER0_ORG3_CA
    CORE_PEER_MSPCONFIGPATH=/opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/peerOrganizations/org3.example.com/users/Admin@org3.example.com/msp
    if [ $PEER -eq 0 ]; then
      CORE_PEER_ADDRESS=peer0.org3.example.com:11051
    else
      CORE_PEER_ADDRESS=peer1.org3.example.com:12051
    fi
  else
    echo "================== ERROR !!! ORG Unknown =================="
  fi

  if [ "$VERBOSE" == "true" ]; then
    env | grep CORE
  fi
}

5. 更新錨節點

updateAnchorPeers() {
  PEER=$1
  ORG=$2
  setGlobals $PEER $ORG

  if [ -z "$CORE_PEER_TLS_ENABLED" -o "$CORE_PEER_TLS_ENABLED" = "false" ]; then
    set -x
    echo "更新錨節點"
    peer channel update -o orderer.example.com:7050 -c $CHANNEL_NAME -f ./channel-artifacts/${CORE_PEER_LOCALMSPID}anchors.tx >&log.txt
    res=$?
    set +x
  else
    set -x
    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 $ORDERER_CA >&log.txt
    res=$?
    set +x
  fi
  cat log.txt
  echo "錨節點更新失敗"
  verifyResult $res "Anchor peer update failed"
  echo "===================== Anchor peers updated for org '$CORE_PEER_LOCALMSPID' on channel '$CHANNEL_NAME' ===================== "
  sleep $DELAY
  echo
}

6. 加入通道

## Sometimes Join takes time hence RETRY at least 5 times
joinChannelWithRetry() {
  PEER=$1
  ORG=$2
  # 呼叫設定全域
  [setGlobals](https://www.wolai.com/sRSSQXgqioxU9LW72BYuxU#9TrZv7UFE2vBofkf4Q4Yma) $PEER $ORG
  set -x

  echo "指定節點加入一個通道中 加入創世塊定義的通道中"
  peer channel join -b $CHANNEL_NAME.block >&log.txt
  res=$?
  set +x
  cat log.txt
  if [ $res -ne 0 -a $COUNTER -lt $MAX_RETRY ]; then
    COUNTER=$(expr $COUNTER + 1)
    echo "peer${PEER}.org${ORG} failed to join the channel, Retry after $DELAY seconds"
    sleep $DELAY
    joinChannelWithRetry $PEER $ORG
  else
    COUNTER=1
  fi
  verifyResult $res "After $MAX_RETRY attempts, peer${PEER}.org${ORG} has failed to join channel '$CHANNEL_NAME' "
}

7. 安裝鏈碼

installChaincode() {
  PEER=$1
  ORG=$2
  [setGlobals](https://www.wolai.com/sRSSQXgqioxU9LW72BYuxU#9TrZv7UFE2vBofkf4Q4Yma)[ ](https://www.wolai.com/sRSSQXgqioxU9LW72BYuxU#9TrZv7UFE2vBofkf4Q4Yma)$PEER $ORG
  VERSION=${3:-1.0}
  set -x
  echo "執行peer chaincode install -n -v -l -p  再輸出到log中"
  peer chaincode install -n mycc -v ${VERSION} -l ${LANGUAGE} -p ${CC_SRC_PATH} >&log.txt
  res=$?
  set +x
  cat log.txt
  verifyResult $res "Chaincode installation on peer${PEER}.org${ORG} has failed"
  echo "===================== Chaincode is installed on peer${PEER}.org${ORG} ===================== "
  echo
}

8. 實體化鏈碼

instantiateChaincode() {
  PEER=$1
  ORG=$2
  setGlobals $PEER $ORG
  VERSION=${3:-1.0}

  # while 'peer chaincode' command can get the orderer endpoint from the peer
  # (if join was successful), let's supply it directly as we know it using
  # the "-o" option
  echo "判斷有沒有開tls"
  if [ -z "$CORE_PEER_TLS_ENABLED" -o "$CORE_PEER_TLS_ENABLED" = "false" ]; then
    set -x
    echo "執行實體化鏈碼  a=100 b=200"
    peer chaincode instantiate -o orderer.example.com:7050 -C $CHANNEL_NAME -n mycc -l ${LANGUAGE} -v ${VERSION} -c '{"Args":["init","a","100","b","200"]}' -P "AND ('Org1MSP.peer','Org2MSP.peer')" >&log.txt
    res=$?
    set +x
  else
    set -x
    peer chaincode instantiate -o orderer.example.com:7050 --tls $CORE_PEER_TLS_ENABLED --cafile $ORDERER_CA -C $CHANNEL_NAME -n mycc -l ${LANGUAGE} -v 1.0 -c '{"Args":["init","a","100","b","200"]}' -P "AND ('Org1MSP.peer','Org2MSP.peer')" >&log.txt
    res=$?
    set +x
  fi
  cat log.txt
  verifyResult $res "Chaincode instantiation on peer${PEER}.org${ORG} on channel '$CHANNEL_NAME' failed"
  echo "===================== Chaincode is instantiated on peer${PEER}.org${ORG} on channel '$CHANNEL_NAME' ===================== "
  echo
}

9. 升級鏈碼

upgradeChaincode() {
  PEER=$1
  ORG=$2
  [setGlobals](https://www.wolai.com/sRSSQXgqioxU9LW72BYuxU#9TrZv7UFE2vBofkf4Q4Yma)[ ](https://www.wolai.com/sRSSQXgqioxU9LW72BYuxU#9TrZv7UFE2vBofkf4Q4Yma)$PEER $ORG

  set -x
  echo "升級指定的鏈碼，交易提交后新的鏈碼立即替代原來的鏈碼 引數 a=90 b=210"
  peer chaincode upgrade -o orderer.example.com:7050 --tls $CORE_PEER_TLS_ENABLED --cafile $ORDERER_CA -C $CHANNEL_NAME -n mycc -v 2.0 -c '{"Args":["init","a","90","b","210"]}' -P "AND ('Org1MSP.peer','Org2MSP.peer','Org3MSP.peer')"
  res=$?
  set +x
  cat log.txt
  verifyResult $res "Chaincode upgrade on peer${PEER}.org${ORG} has failed"
  echo "===================== Chaincode is upgraded on peer${PEER}.org${ORG} on channel '$CHANNEL_NAME' ===================== "
  echo
}

10. 查詢鏈碼

chaincodeQuery() {
  PEER=$1
  ORG=$2
  setGlobals $PEER $ORG
  EXPECTED_RESULT=$3
  echo "===================== Querying on peer${PEER}.org${ORG} on channel '$CHANNEL_NAME'... ===================== "
  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 $rc -ne 0
  do
    echo "$(($(date +%s) - starttime))"
    echo  "$TIMEOUT"
    echo $rc
    echo "判斷開始時間 結束時間 rc不小于 0"
    echo "休息一段時間"
    sleep $DELAY
    echo "Attempting to Query peer${PEER}.org${ORG} ...$(($(date +%s) - starttime)) secs"
    set -x
    echo "查詢a的錢"
    peer chaincode query -C $CHANNEL_NAME -n mycc -c '{"Args":["query","a"]}' >&log.txt
    res=$?
    set +x
    test $res -eq 0 && VALUE=$(cat log.txt | awk '/Query Result/ {print $NF}')
    test "$VALUE" = "$EXPECTED_RESULT" && let rc=0
    # removed the string "Query Result" from peer chaincode query command
    # result. as a result, have to support both options until the change
    # is merged.
    test $rc -ne 0 && VALUE=$(cat log.txt | egrep '^[0-9]+$')
    test "$VALUE" = "$EXPECTED_RESULT" && let rc=0
  done
  echo
  cat log.txt
  echo "判斷結果"
  if test $rc -eq 0; then
    echo "===================== Query successful on peer${PEER}.org${ORG} on channel '$CHANNEL_NAME' ===================== "
  else
    echo "!!!!!!!!!!!!!!! Query result on peer${PEER}.org${ORG} is INVALID !!!!!!!!!!!!!!!!"
    echo "================== ERROR !!! FAILED to execute End-2-End Scenario =================="
    echo
    exit 1
  fi
}

11. 將給定通道的配置寫入json

# Writes the current channel config for a given channel to a JSON file
fetchChannelConfig() {
  CHANNEL=$1
  OUTPUT=$2

  setOrdererGlobals
  echo "提取指區塊寫入檔案"
  echo "Fetching the most recent configuration block for the channel"
  if [ -z "$CORE_PEER_TLS_ENABLED" -o "$CORE_PEER_TLS_ENABLED" = "false" ]; then
    set -x
    peer channel fetch config config_block.pb -o orderer.example.com:7050 -c $CHANNEL --cafile $ORDERER_CA
    set +x
  else
    set -x
    peer channel fetch config config_block.pb -o orderer.example.com:7050 -c $CHANNEL --tls --cafile $ORDERER_CA
    set +x
  fi

  echo "將配置塊解碼為json   將一個protobuf訊息轉換為JSON格式，"
  echo "Decoding config block to JSON and isolating config to ${OUTPUT}"
  set -x
  configtxlator proto_decode --input config_block.pb --type common.Block | jq .data.data[0].payload.data.config >"${OUTPUT}"
  set +x
}

12. 更新簽名

# 為指定的configtx更新檔案原地簽名，需要-f標志，
# ${TX} 可以查看這個檔案前=前后大小變化
signConfigtxAsPeerOrg() {
 
  PEERORG=$1
  TX=$2
  setGlobals 0 $PEERORG
  set -x
  peer channel signconfigtx -f "${TX}"
  set +x
}

13. 更新配置資訊

# createConfigUpdate <channel_id> <original_config.json> <modified_config.json> <output.pb>
# Takes an original and modified config, and produces the config update tx
# which transitions between the two
createConfigUpdate() {
  echo "計算生成兩個common.Config訊息之間的配置更新，"

  CHANNEL=$1
  ORIGINAL=$2
  MODIFIED=$3
  OUTPUT=$4

  set -x
  echo "將一個JSON檔案轉換為protobuf格式資料，"
  echo "input ${ORIGINAL} 轉化為original_config.pb"
  configtxlator proto_encode --input "${ORIGINAL}" --type common.Config >original_config.pb
  configtxlator proto_encode --input "${MODIFIED}" --type common.Config >modified_config.pb
  echo "json 轉 pb"
  configtxlator compute_update --channel_id "${CHANNEL}" --original original_config.pb --updated modified_config.pb >config_update.pb
  echo "pb 轉 json "
  configtxlator proto_decode --input config_update.pb --type common.ConfigUpdate >config_update.json
  echo '{"payload":{"header":{"channel_header":{"channel_id":"'$CHANNEL'", "type":2}},"data":{"config_update":'$(cat config_update.json)'}}}' | jq . >config_update_in_envelope.json
  configtxlator proto_encode --input config_update_in_envelope.json --type common.Envelope >"${OUTPUT}"
  set +x
}

14. peer鏈接的引數

# parsePeerConnectionParameters $@
# Helper function that takes the parameters from a chaincode operation
# (e.g. invoke, query, instantiate) and checks for an even number of
# peers and associated org, then sets $PEER_CONN_PARMS and $PEERS
parsePeerConnectionParameters() {
  echo "從鏈碼匯總獲取輔助引數"
  echo "檢查 peer org 引數  不均勻的數量"
    # check for uneven number of peer and org parameters
  if [ $(($# % 2)) -ne 0 ]; then
    exit 1
  fi

  PEER_CONN_PARMS=""
  PEERS=""
  while [ "$#" -gt 0 ]; do
    setGlobals $1 $2
    PEER="peer$1.org$2"
    PEERS="$PEERS $PEER"
    PEER_CONN_PARMS="$PEER_CONN_PARMS --peerAddresses $CORE_PEER_ADDRESS"
    if [ -z "$CORE_PEER_TLS_ENABLED" -o "$CORE_PEER_TLS_ENABLED" = "true" ]; then
      TLSINFO=$(eval echo "--tlsRootCertFiles \$PEER$1_ORG$2_CA")
      PEER_CONN_PARMS="$PEER_CONN_PARMS $TLSINFO"
    fi
    # shift by two to get the next pair of peer/org parameters
    shift
    shift
  done
  # remove leading space for output
  PEERS="$(echo -e "$PEERS" | sed -e 's/^[[:space:]]*//')"
}

15. 初始化鏈碼

# chaincodeInvoke <peer> <org> ...
# Accepts as many peer/org pairs as desired and requests endorsement from each
chaincodeInvoke() {
  echo "初始化鏈碼"
  [parsePeerConnectionParameters](https://www.wolai.com/sRSSQXgqioxU9LW72BYuxU#n872ZyZk83zGv5T7VH2THG)[ ](https://www.wolai.com/sRSSQXgqioxU9LW72BYuxU#n872ZyZk83zGv5T7VH2THG)$@
  res=$?
  verifyResult $res "Invoke transaction failed on channel '$CHANNEL_NAME' due to uneven number of peer and org parameters "

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

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