Minicurso Blockchain e Internet das Coisas SEMCOMP 22 - ICMC/USP

Pré-requisitos

• Componentes básicos ->

    curl -O https://hyperledger.github.io/composer/v0.19/prereqs-ubuntu.sh
  

    chmod u+x prereqs-ubuntu.sh
  

   ./prereqs-ubuntu.sh
  

• Hyperledger Composer -> npm install -g composer-cli

• Hyperledger Composer Rest -> npm install -g composer-rest-server

• Composer Generator -> npm install -g generator-hyperledger-composer

• Yo -> npm install -g yo

• Hyperledger Fabric ->

    mkdir ~/fabric-dev-servers && cd ~/fabric-dev-servers
  

    curl -O https://raw.githubusercontent.com/hyperledger/composer-tools/master/packages/fabric-dev-servers/fabric-dev-servers.tar.gz
  

    tar -xvf fabric-dev-servers.tar.gz
  

    export FABRIC_VERSION=hlfv12
  

    ./downloadFabric.sh
  

    ./startFabric.sh
  

    ./createPeerAdminCard.sh
  

• Se o Docker apresentar problemas com permissões:

   sudo groupadd docker
  

   sudo gpasswd -a ${USUARIO} docker
  

   sudo service docker restart
  

   newgrp - docker
  

• Composer playground -> usar online aqui

Cenário de uso

Rastreamento no transaporte de animais utilizando sensores e blockchain

Modelagem

Pensando na estrutra de organização do Hyperledger composer:

Temos os seguintes componentes:

• CTO:

  • Asset
  • Participant
  • Transaction

• permission.acl

  • permission

• Query

  • Query Composer

• logic.js

  • Transaction logic

  No nosso projeto teremos:

Participants:

• Fazendeiro: cpf, nome, sobrenome, email, end1, end2, pais e cep
• Regulador: cpf, nome, sobrenome, email

Asset:

• Fazenda: fazendaId, nome, Business
• Animal: animalId, especie, localizacao-status, tipo-producao, fazenda-alocado, fazendeiro-proprietario
• Container containerId, temperatura, animais, localizacao-gps, status
• Business: sbi, end1, end2, pais, cep, fazendeiro, animais

Transaction:

• AnimalMovimento: logs[], animal, business from, bussiness to (abstract)
• PartidaDoAnimal: fazenda
• ChegadaAnimal: fazenda
• LerStatusContainer: logs[], temperatura, container, geoCode

Event

• ContainerStatus: message, geoCode, temperatura

Modelagem do IoT

• Raspberry Pi 3
• Sensor de temperatura DH22

Executando

Blockchain

  composer archive create -t dir -n .

  composer network install --card PeerAdmin@hlfv1 --archiveFile [email protected]

  composer network start --networkName blockchain-icmc --networkVersion 0.0.1 --networkAdmin admin -- networkAdminEnrollSecret adminpw --card PeerAdmin@hlfv1 --file blockchain-icmc.card

  composer card import --file blockchain-icmc.card

  composer network ping --card admin@blockchain-icmc

  composer-rest-server

IoT

• Execute o Script temperatura.py na pasta IoT