Hyperledger Explorer(三)

区块链浏览器

可以在浏览器上观察整个区块链上的块数、节点数、通道、链码，用于浏览底层区块链网络上的活动
安装方式有两种：
1. docker
2. 下载代码到本地
项目地址

配置

拉取blockchain-explorer配置文件到本地explorer-twonodes文件夹下

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wget https://raw.githubusercontent.com/hyperledger/blockchain-explorer/main/examples/net1/config.json
wget https://raw.githubusercontent.com/hyperledger/blockchain-explorer/main/examples/net1/connection-profile/test-network.json -P connection-profile
wget https://raw.githubusercontent.com/hyperledger/blockchain-explorer/main/docker-compose.yaml

复制twonodes网络中保存证书的文件夹crypto-config到explorer-twonodes文件夹下，文件夹改名为与官方一致organizations
由于twonodes网络中有两个组织，所以在connection-profile文件夹下新增一个json文件，一个json文件对应一个组织

org1-network.json：

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{
    "name": "org1-network",
    "version": "1.0.0",
    "client": {
        "tlsEnable": true,
        "adminCredential": {
            "id": "exploreradmin",
            "password": "exploreradminpw"
        },
        "enableAuthentication": true,
        "organization": "Org1MSP",
        "connection": {
            "timeout": {
                "peer": {
                    "endorser": "300"
                },
                "orderer": "300"
            }
        }
    },
    "channels": {
        "mychannel": {
            "peers": {
                "peer0.org1.example.com": {}
            },
            "connection":{
                "timeout":{
                    "peer":{
                        "endorser":"6000",
                        "eventHub":"6000",
                        "eventReg":"6000"
                    }
                }
            }
        }
    },
    "organizations": {
        "Org1MSP": {
            "mspid": "Org1MSP",
            "adminPrivateKey": {
                "path": "/tmp/crypto/peerOrganizations/org1.example.com/users/Admin@org1.example.com/msp/keystore/priv_sk"
            },
            "peers": ["peer0.org1.example.com"],
            "signedCert": {
                "path": "/tmp/crypto/peerOrganizations/org1.example.com/users/Admin@org1.example.com/msp/signcerts/Admin@org1.example.com-cert.pem"
            }
        }
    },
    "peers": {
        "peer0.org1.example.com": {
            "tlsCACerts": {
                "path": "/tmp/crypto/peerOrganizations/org1.example.com/peers/peer0.org1.example.com/tls/ca.crt"
            },
            "url": "grpcs://peer0.org1.example.com:7051"
        }
    }
}

org2-network.json：

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{
    "name": "org2-network",
    "version": "1.0.0",
    "client": {
        "tlsEnable": true,
        "adminCredential": {
            "id": "exploreradmin",
            "password": "exploreradminpw"
        },
        "enableAuthentication": true,
        "organization": "Org2MSP",
        "connection": {
            "timeout": {
                "peer": {
                    "endorser": "300"
                },
                "orderer": "300"
            }
        }
    },
    "channels": {
        "mychannel": {
            "peers": {
                "peer0.org2.example.com": {}
            },
            "connection":{
                "timeout":{
                    "peer":{
                        "endorser":"6000",
                        "eventHub":"6000",
                        "eventReg":"6000"
                    }
                }
            }
        }
    },
    "organizations": {
        "Org2MSP": {
            "mspid": "Org2MSP",
            "adminPrivateKey": {
                "path": "/tmp/crypto/peerOrganizations/org2.example.com/users/Admin@org2.example.com/msp/keystore/priv_sk"
            },
            "peers": ["peer0.org2.example.com"],
            "signedCert": {
                "path": "/tmp/crypto/peerOrganizations/org2.example.com/users/Admin@org2.example.com/msp/signcerts/Admin@org2.example.com-cert.pem"
            }
        }
    },
    "peers": {
        "peer0.org2.example.com": {
            "tlsCACerts": {
                "path": "/tmp/crypto/peerOrganizations/org2.example.com/peers/peer0.org2.example.com/tls/ca.crt"
            },
            "url": "grpcs://peer0.org2.example.com:9051"
        }
    }
}

配置config.json文件

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{
    "network-configs": {
        "org1-network": {
            "name": "org1-network",
            "profile": "./connection-profile/org1-network.json"
        },
        "org2-network": {
            "name": "org2-network",
            "profile": "./connection-profile/org2-network.json"
        }
    },
    "license": "Apache-2.0"
}

配置docker-compose文件，修改网络名和挂载目录即可

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# SPDX-License-Identifier: Apache-2.0
version: '2.1'

volumes:
  pgdata:
  walletstore:

networks:
  mynetwork.com:
    name: twonodes_test

services:

  explorerdb.mynetwork.com:
    image: hyperledger/explorer-db:latest
    container_name: explorerdb.mynetwork.com
    hostname: explorerdb.mynetwork.com
    environment:
      - DATABASE_DATABASE=fabricexplorer
      - DATABASE_USERNAME=hppoc
      - DATABASE_PASSWORD=password
    healthcheck:
      test: "pg_isready -h localhost -p 5432 -q -U postgres"
      interval: 30s
      timeout: 10s
      retries: 5
    volumes:
      - pgdata:/var/lib/postgresql/data
    networks:
      - mynetwork.com

  explorer.mynetwork.com:
    image: hyperledger/explorer:latest
    container_name: explorer.mynetwork.com
    hostname: explorer.mynetwork.com
    environment:
      - DATABASE_HOST=explorerdb.mynetwork.com
      - DATABASE_DATABASE=fabricexplorer
      - DATABASE_USERNAME=hppoc
      - DATABASE_PASSWD=password
      - LOG_LEVEL_APP=debug
      - LOG_LEVEL_DB=debug
      - LOG_LEVEL_CONSOLE=debug
      - LOG_CONSOLE_STDOUT=true
      - DISCOVERY_AS_LOCALHOST=false
    volumes:
      - ./config.json:/opt/explorer/app/platform/fabric/config.json
      - ./connection-profile:/opt/explorer/app/platform/fabric/connection-profile
      - ./organizations:/tmp/crypto
      - walletstore:/opt/explorer/wallet
    ports:
      - 8080:8080
    depends_on:
      explorerdb.mynetwork.com:
        condition: service_healthy
    networks:
      - mynetwork.com

启动

进入twonodes目录启动区块链网络

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docker-compose up -d

进入explorer-twonodes启动区块链浏览器，第一次启动的话，会自动拉起浏览器的docker镜像

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docker-compose up -d

访问127.0.0.1:8080，用户名和密码在org1-network.json配置文件中

关闭

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docker-compose down -v

遇到的BUG

BUG1

登录org1-network只能看到peer0.org1.example.com和orderer.example.com:7050，登录org1-network只能看到peer0.org2.example.com和orderer.example.com:7050

解决：检查过配置文件、网络问题、修改过本地hosts文件使节点可以在本地互相感知到，都没有解决该BUG

2023.01.05 可能是更新锚节点步骤的问题，建议按照官方文档重新搭建一遍网络

2023.01.06 可能是Clash问题，改成direct试试

2023.02.07 在官方demo v2.2的测试网络fabric_test中成功显示全部节点

BUG2

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【ERROR】 main - Error :  【  'Default client peer is down and no channel details available database'】

解决：之前执行过docker volume prune把channel证书给删除了，所以实际异常根据日志是channel连接不上。重新加入通道、安装链码、调用链码即可

可能是org1-network.json文件中的通道名不对

BUG3

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Failed to create wallet, please check the configuration, and valid file paths: {
  "errno": -2,
  "syscall": "open",
  "code": "ENOENT",
  "path": "/tmp/crypto/peerOrganizations/org1.example.com/users/Admin@org1.example.com/msp/keystore/priv_sk"
}

原因：搭建网络时使用了Fabric-CA生成证书和Key，这与搭建网络时默认使用cryptogen工具生成证书和Key的名称不同

解决：需要修改org1-network.json和org2-network.json中的证书和Key的名称，正确的证书和Key名称在搭建网络时生成的文件夹organizations中寻找