Issuing Service

model: QmfK3LyEPLoYJCKXate1PceGLBNBaodwqcV9XirwHZFbsc

The agent is responsible for checking the data and issuing the green certificates.

The collector service is located here.

Nodes

Checker

Listens to demand messages, checks the data is valid and if it's true sends the offer message. It expects an objective with the following topic:

• /log - IPFS hash to the log file

All the left topics are skipped.

Parameters:

• lighthouse - default value is 0x202a09A451DE674d2d65Bf1C90968a8d8F72cf7b (sidechain)
• token - the value in sidechain is 0x966EbbFD7ECbCF44b1e05341976e0652CFA01360. Currently the price is 0
• validator - 0x96f2AFE0Dd16393dF8E9Ccb8864F40eD0159956d. The owner is 0x4af74a76aA7B934C7397FDD0C2428762c8F7c550
• order_lifetime - the deadline, by default 100 blocks

Issuer

Watches for a new liability, packs the log into a result message and sends a transaction to the emitter smart contract with the amount of green certificates

Parameters:

• web3_http_provider - the address of Web3 RPC
• emitter_contract - the address of the emitter smart contract
• private_key - a string that indicates a private key of the sender (the address of CPS)

Result message contains the following topics:

• /liability/eth_<liability_address>/log - contains the same log as in /log topic
• /liability/eth_<liability_address>/period_start - the beginning of measurement
• /liability/eth_<liability_address>/period_end - the ending of measurement
• /liability/eth_<liability_address>/token - the address of the token in Ethereum
• /liability/eth_<liability_address>/total_production - the amount of produced energy
• /liability/eth_<liability_address>/unit - the unit of energy
• /liability/eth_<liability_address>/txhash - the hash of sent transaction

Every topic's type is std_msgs/String

Smart Contracts

During its work the issuer node sends a transaction to a smart contract by address emitter_contract.

There are all the necessary contracts deployed to sidechain network, but the easiest way to create a new set of contracts is:

cd contracts
truffle deploy

For more information look at the README.md file in contracts folder.

Build

To build the package run:

nix build -f release.nix

Run

source result/setup.zsh
roslaunch issuing_service_agent issuer.launch keyfile:=./keyfile