您正在查看: 2020年6月

Eosplayer -> eosjs的绑定层

 2020-06-28　  Surou　  阅读 　  EOS-开源推荐　  0 评论

Eosplayer是eosjs的绑定层，它基于eosjs并为应用程序层提供了更好的可用性。它既可以在node.js服务器上使用，也可以在已经安装了Scatter的浏览器或Dapp钱包中使用。

frontd releases : https://github.com/bagaking/eosplayer/releases

演示地址：http://eosplayer.kihand.com/#/

Web3j send ERC20 Token Demo

 2020-06-28　  Surou　  阅读 　  Ethereum-优秀转载　  0 评论 
<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <script src="../../libs/web3.js_v1.0.0-beta.35/web3.min.js"></script>
</head>
<body>

  <h1>Send ERC20 Token</h1>

  <h2>Notes</h2>
  <ul>
    <li>Use MetaMask</li>
    <li>To check ERC20 balance, use <a href="../getERC20TokenBalance/" target="_blank">getERC20TokenBalance</a></li>
  </ul>

  <h2>Token Address</h2>
  <input type="text" id="token-address" size="80" oninput="onAddressChange()"></input>
  <p>e.g. 0x2A65D41dbC6E8925bD9253abfAdaFab98eA53E34</p>

  <h2>Recipients Address</h2>
  <input type="text" id="to-address" size="80"></input>
  <p>e.g. 0x8Df70546681657D6FFE227aB51662e5b6e831B7A</p>

  <h2>Decimals</h2>
  <input type="number" id="decimals" size="40" readonly></input>

  <h2>Amount</h2>
  <input type="number" id="amount" size="40"></input>

  <div><button id="send" onclick="send()">Send ERC20 Token</button></div>

  <h2>Result</h2>
  <span id="result"></span>

  <script>

    var web3js;
    var account;

    function getERC20TokenBalance(tokenAddress, walletAddress, callback) {
      let minABI = [
        {"constant":true,"inputs":[{"name":"_owner","type":"address"}],"name":"balanceOf","outputs":[{"name":"balance","type":"uint256"}],"type":"function"},
        {"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint8"}],"type":"function"}
      ];
      let contract = new web3js.eth.Contract(minABI, tokenAddress);
      contract.methods.balanceOf(walletAddress).call((error, balance) => {
        contract.methods.decimals().call((error, decimals) => {
          console.log(balance);
          console.log(decimals);
          balance = balance / (10**decimals);
          callback(balance);
        });
      });
    }

    function getERC20TokenContract(tokenAddress) {
      let minABI = [
        {"constant":true,"inputs":[{"name":"_owner","type":"address"}],"name":"balanceOf","outputs":[{"name":"balance","type":"uint256"}],"type":"function"},
        {"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint8"}],"type":"function"},
        {"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transfer","outputs":[{"name":"","type":"bool"}],"type":"function"}
      ];
      return new web3js.eth.Contract(minABI, tokenAddress);
    }

    function getERC20TokenDecimals(callback) {
      window.tokenContract.methods.decimals().call((error, decimals) => {
        callback(decimals);
      });
    }

    function onAddressChange(e) {
      let tokenAddress = document.getElementById('token-address').value;
      if(tokenAddress != "") {
        window.tokenContract = getERC20TokenContract(tokenAddress);
        getERC20TokenDecimals((decimals) => {
          document.getElementById('decimals').value = decimals;
        });
      }
    }

    function transferERC20Token(toAddress, value, callback) {
      window.tokenContract.methods.transfer(toAddress, value).send({from: account})
      .on('transactionHash', function(hash){
        callback(hash);
      });
    }

    function send() {
      var toAddress = document.getElementById('to-address').value;
      var decimals = web3js.utils.toBN(document.getElementById('decimals').value);
      var amount = web3js.utils.toBN(document.getElementById('amount').value);
      var sendValue = amount.mul(web3js.utils.toBN(10).pow(decimals));
      console.log(sendValue.toString());
      transferERC20Token(toAddress, sendValue, (txHash) => {
        document.getElementById('result').innerText = txHash;
      });
    }

    window.onload = function() {
      web3js = new Web3(Web3.givenProvider);
      console.log(web3js.version);
      var accountInterval = setInterval(function() {
        web3js.eth.getAccounts((error, address) => {
          if (address[0] !== account) {
            account = address[0];
            console.log(account);
          }
        });

      }, 300);
    }

  </script>

</body>
</html>

https://github.com/piyolab/sushiether/commit/e35e949b5d898d357f9bd1d4e3f35b679974f192

Hyperledger Fabric 演练 - 《基于联盟区块链的政务大数据共享》

 2020-06-22　  Surou　  阅读 　  Fabric-新手教程　  1 评论

1. 背景

为了继续深入研究Fabric的加密通道逻辑，找了一个现成的例子，并修正了一个新手部署可能遇到的问题，
修正的主要点是

  1. 修改实例代码相对fabric-samples路径，
  2. 细化一些操作步骤，方便新手傻瓜式运行

1.1 区域链（基于证书准入的联盟链）网络

1.2 业务流程时序

2. 演示系统环境

OS: Ubuntu 18.04
Fabric: release-1.4
Go: go1.14.4 linux/amd64
Docker: 19.03.11

3. 源代码仓库

gitee: https://gitee.com/BCSkill/fcc

4. 实例部署

4.1 克隆源代码

git clone https://gitee.com/BCSkill/fcc.git

4.2 部署fabric-samples运行环境

细节的话可以参考《fabric-samples 部署测试》，我们这里不做详细描述，直接运行封装好的脚本

./1-1.hy-sample.sh

大概过程中会分为几步，

  1. 克隆fabric-samples到当前源码目录
  2. 下载编译到好的fabric二进制文件，并解压到 fabric-samples/bin,记得将此目录添加到环境变量
  3. 拉取所需要的Docker镜像

4.3 启动示例网络，创建区块链网络（2个组织，每组织2个节点）

./1-2.startNetwork.sh

成功后输出========= All GOOD, BYFN execution completed ===========

4.4 加入第3个组织，2个节点

./2.addOrg3.sh

完成后，结果显示========= Org3 is now halfway onto your first network =========

4.5 部署政务智能合约，并实例化

./3-1.installNetcon.sh   #合约：网签合同备案
./3-2.installEstateBook.sh   #合约：不动产权证书
./3-3.installEstateTax.sh    #合约：不动产业务缴税

完成后，结果显示

Get instantiated chaincodes on channel mychannel:
Name: estatebook, Version: 1.0, Path: github.com/chaincode/estatebook, Escc: escc, Vscc: vscc
Name: estatetax, Version: 1.0, Path: github.com/chaincode/estatetax, Escc: escc, Vscc: vscc
Name: netcon, Version: 1.0, Path: github.com/chaincode/netcon, Escc: escc, Vscc: vscc

此时链环境和链合约已经部署好了。下面开始部署项目的服务端和Web前台

4.6 编译后台。

代码位于appcode/fccserver/src 可自行编译，或直接使用已编译完成的可执行文件

chmod +x appcode/fccserver/src/fccserver

启动后台容器

./4.startAppcli.sh
docker logs -f appcli

如果启动正常，会显示

[fcc-server] 2019/12/12 03:03:55 system db initiated successfully.
[fcc-server] 2019/12/12 03:03:56 Chaincode client initialed successfully.
[fcc-server] 2019/12/12 03:03:56 Server started on  :1206

4.7 编译和部署前端

前端采用VUE，也可使用其它前端框架或HTML。使用GNINX或其它WEB服务器部署编译后的前端代码。注：当前未使用登录和权限设置
前台部署依赖yarn,《ubuntu 安装最新版本 yarn》

cd ./appcode/fcc-client // 进到Web前端代码目录
yarn install            // 安装依赖
yarn serve              // 运行前端

如果出现
运行成功后，就会显示访问地址

  App running at:
  - Local:   http://localhost:8080/ 
  - Network: http://192.168.31.134:8080/

浏览器打开地址，就能看到实例演示了

在线演示

http://xujf000.tk:28888/#/

实例依赖Docker 镜像

surou@surou:~/go/src/github.com/chaincode/netcon$ docker ps
+ docker ps
CONTAINER ID        IMAGE                                                                                                        COMMAND                  CREATED             STATUS              PORTS                                        NAMES
f3b34643ff39        dev-peer0.org2.example.com-estatebook-1.0-08d85d200f6268a9c9656f01eac3d5325c44c1d2a93a1115168f63888a27206b   "chaincode -peer.add…"   44 minutes ago      Up 43 minutes                                                    dev-peer0.org2.example.com-estatebook-1.0
9828c2b46b4e        dev-peer0.org2.example.com-estatetax-1.0-975867dfc12f233b11d78db94c347aa6b7e94f1d389af7cc892cb8730652c110    "chaincode -peer.add…"   45 minutes ago      Up 45 minutes                                                    dev-peer0.org2.example.com-estatetax-1.0
9d62c54bfd73        dev-peer0.org2.example.com-netcon-1.0-8285fea29f8449473340c346dc0b6716a084576593325a33707353426d7298dc       "chaincode -peer.add…"   46 minutes ago      Up 46 minutes                                                    dev-peer0.org2.example.com-netcon-1.0
cb870db589c4        hyperledger/fabric-tools:1.4.3                                                                               "./fccserver"            About an hour ago   Up About an hour    0.0.0.0:1206->1206/tcp                       appcli
33ad280f1f17        dev-peer0.org1.example.com-estatetax-1.0-3284f6d77599d92fad2da964008b3f4bb78573eeb938f40e2110de2089455dc3    "chaincode -peer.add…"   About an hour ago   Up About an hour                                                 dev-peer0.org1.example.com-estatetax-1.0
fa575e9548e3        dev-peer0.org1.example.com-estatebook-1.0-1804a11c573ccbef46e7cda2314c1d76edc2fb52b0f7f9d10ed2024c03343aff   "chaincode -peer.add…"   About an hour ago   Up About an hour                                                 dev-peer0.org1.example.com-estatebook-1.0
75c50829fbb8        dev-peer0.org1.example.com-netcon-1.0-4faf315b9f1da5832e386fbae0d05157d269cff3802d770b0e8f135a69027796       "chaincode -peer.add…"   About an hour ago   Up About an hour                                                 dev-peer0.org1.example.com-netcon-1.0
15d29c21ed9a        hyperledger/fabric-tools:1.4.3                                                                               "/bin/bash"              2 hours ago         Up 2 hours                                                       Org3cli
d0ce2cc32019        hyperledger/fabric-peer:1.4.3                                                                                "peer node start"        2 hours ago         Up 2 hours          0.0.0.0:12051->12051/tcp                     peer1.org3.example.com
9bcf5082db71        hyperledger/fabric-peer:1.4.3                                                                                "peer node start"        2 hours ago         Up 2 hours          0.0.0.0:11051->11051/tcp                     peer0.org3.example.com
6f76cca2d809        hyperledger/fabric-tools:latest                                                                              "/bin/bash"              2 hours ago         Up 2 hours                                                       cli
04d61faad751        hyperledger/fabric-peer:latest                                                                               "peer node start"        2 hours ago         Up 2 hours          0.0.0.0:10051->10051/tcp                     peer1.org2.example.com
cdbffd49d7d2        hyperledger/fabric-peer:latest                                                                               "peer node start"        2 hours ago         Up 2 hours          0.0.0.0:8051->8051/tcp                       peer1.org1.example.com
d59fe735b96d        hyperledger/fabric-peer:latest                                                                               "peer node start"        2 hours ago         Up 2 hours          0.0.0.0:9051->9051/tcp                       peer0.org2.example.com
4caeb0c062e0        hyperledger/fabric-peer:latest                                                                               "peer node start"        2 hours ago         Up 2 hours          0.0.0.0:7051->7051/tcp                       peer0.org1.example.com
431ad6029954        hyperledger/fabric-ca:latest                                                                                 "sh -c 'fabric-ca-se…"   2 hours ago         Up 2 hours          7054/tcp, 0.0.0.0:8054->8054/tcp             ca_peerOrg2
4d69e9f76b1b        hyperledger/fabric-couchdb                                                                                   "tini -- /docker-ent…"   2 hours ago         Up 2 hours          4369/tcp, 9100/tcp, 0.0.0.0:5984->5984/tcp   couchdb0
1bcd9f89625f        hyperledger/fabric-couchdb                                                                                   "tini -- /docker-ent…"   2 hours ago         Up 2 hours          4369/tcp, 9100/tcp, 0.0.0.0:6984->5984/tcp   couchdb1
cb46fd7307cf        hyperledger/fabric-couchdb                                                                                   "tini -- /docker-ent…"   2 hours ago         Up 2 hours          4369/tcp, 9100/tcp, 0.0.0.0:8984->5984/tcp   couchdb3
ac996671c144        hyperledger/fabric-orderer:latest                                                                            "orderer"                2 hours ago         Up 2 hours          0.0.0.0:7050->7050/tcp                       orderer.example.com
c13cc3241b96        hyperledger/fabric-ca:latest                                                                                 "sh -c 'fabric-ca-se…"   2 hours ago         Up 2 hours          0.0.0.0:7054->7054/tcp                       ca_peerOrg1
01ce681daa6c        hyperledger/fabric-couchdb                                                                                   "tini -- /docker-ent…"   2 hours ago         Up 2 hours          4369/tcp, 9100/tcp, 0.0.0.0:7984->5984/tcp   couchdb2

参考

https://www.bcskill.com/index.php/archives/926.html

yarn错误The engine "node" is incompatible with this module

 2020-06-22　  Surou　  阅读 　  Other-经验分享　  0 评论 
 yarn config set ignore-engines true

Chaincode installation on peer0.org1 has failed

 2020-06-17　  Surou　  阅读 　  Fabric-新手教程　  0 评论

v1.4 版本执行 ./byfn.sh up时，报如下错误

Error: error getting chaincode deployment spec for mycc: error getting chaincode package bytes: failed to calculate dependencies: incomplete package: github.com/hyperledger/fabric/core/chaincode/shim
!!!!!!!!!!!!!!! Chaincode installation on peer0.org1 has failed !!!!!!!!!!!!!!!!
========= ERROR !!! FAILED to execute End-2-End Scenario ===========

跟脚本代码是从（github）以下逻辑报出的

installChaincode() {
  PEER=$1
  ORG=$2
  setGlobals $PEER $ORG
  VERSION=${3:-1.0}
  set -x
  peer chaincode install -n mycc -v ${VERSION} -l ${LANGUAGE} -p ${CC_SRC_PATH} >&log.txt // 此处
  res=$?
  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
}

跟下逻辑，意思是说，以下依赖未找到（github）

import (
    "fmt"
    "strconv"

    "github.com/hyperledger/fabric/core/chaincode/shim" // 未找到
    pb "github.com/hyperledger/fabric/protos/peer"
)

经过对比仓库分支代码，发现release-1.4是有的，最新的master分支已经删掉了。
直接参考2.0版本修改下吧
修改chaincode_example02.go

import (
    "bytes"
    "encoding/json"
    "fmt"
    "strconv"
    "strings"
    "time"
    "os"

    "github.com/hyperledger/fabric-chaincode-go/shim"
    pb "github.com/hyperledger/fabric-protos-go/peer"
)

并在同级目录新建go.mod

module github.com/hyperledger/fabric/scripts/fabric-samples/chaincode/chaincode_example02/go

go 1.14
require (
        github.com/hyperledger/fabric-chaincode-go v0.0.0-20200128192331-2d899240a7ed
        github.com/hyperledger/fabric-protos-go v0.0.0-20200124220212-e9cfc186ba7b
        golang.org/x/net v0.0.0-20200202094626-16171245cfb2 // indirect
        golang.org/x/sys v0.0.0-20200212091648-12a6c2dcc1e4 // indirect
        golang.org/x/text v0.3.2 // indirect
        google.golang.org/genproto v0.0.0-20200218151345-dad8c97a84f5 // indirect
)

然后更新依赖

go mod vendor

再次重新执行测试就好了

./byfn.sh down
./byfn.sh up

或者

go mod init chaincode
go get github.com/hyperledger/fabric/common/util@v1.4
go get github.com/hyperledger/fabric/core/chaincode/shim@v1.4
go get github.com/hyperledger/fabric/protos/peer@v1.4

参考

http://blog.hubwiz.com/2020/03/12/fabric-2-external-chaincode/
https://github.com/SAPDocuments/Tutorials/issues/4415?tdsourcetag=s_pctim_aiomsg

  1. 1
  2. 2

最新文章
跨链桥跨链过程中数据变化polygon cdk aggregator 报execution reverted (0x09bde339)polygon cdk Aggregator使用SequencerPrivateKey的时机polygon da 判断DA服务是否正常polygon cdk sequence sender 发送 sequenceBatchesValidium的时机polygon cdk 查看最新提交L1batch numCDK 部署或重置后第一笔交易error: latest Synced BlockNumber (7089137) is higher than the latest Proposed block (1008) in the networkpolygon cdk 跨链桥交易处理流程分析因RPC限速导致sequence-sender异常退出

最新回复
fzd: 请问这个解决了吗 StarkWare explained: layer 2 solution provider of dYdX and iMMUTABLE R11; BitKeep News: [...]Layer 2: https://... 一文读懂 StarkWare：dYdX 和 Immutable 背后的 L2 方案 R11; BitKeep 博客: [...]Layer 2:Comparing Laye... http://andere.strikingly.com/: Regards, Great stuff! surou: 需要先执行提案合约申请，等待出块节点地址同意后，才会进... heco: WARN [11-19|11:26:09.459] N... P: 你好，我在heco链上遇到了“tx fee excee... Peng: 楼主安装成功了吗？我正在同步区块链，一天了，差不多才同... joyhu: 你好，请问下安装好之后如何获取到bee.yaml配置文... kaka: 支票最终怎么提币呢？

标签

归档
November 2024October 2024September 2024August 2024July 2024June 2024May 2024April 2024March 2024January 2024December 2023November 2023October 2023September 2023August 2023July 2023June 2023April 2023March 2023February 2023January 2023December 2022November 2022October 2022August 2022July 2022June 2022May 2022March 2022February 2022January 2022December 2021November 2021October 2021September 2021August 2021July 2021June 2021May 2021April 2021March 2021February 2021January 2021December 2020November 2020October 2020September 2020July 2020June 2020May 2020April 2020March 2020February 2020January 2020December 2019November 2019October 2019September 2019August 2019July 2019June 2019May 2019April 2019March 2019February 2019January 2019December 2018November 2018October 2018September 2018August 2018July 2018June 2018

其他
文章 RSS 评论 RSS