EBeth-daemon

Daemon which runs and deploys smart contracts for EBeth betting services and interacts with the contracts autonomously.

Pre-requisites:

• node
• yarn
• npm
• geth

How to run?

Before running the daemon, a geth node must be run on the computer. This can be done using:

geth --testnet --rpc --rpcapi "admin,db,eth,debug,miner,net,shh,txpool,personal,web3" --syncmode "light" --rpccorsdomain '*' --rpcaddr 0.0.0.0 --rpcport 8545 --cache 8192

Note that it might take a while to find a peer since we are using the Ropsten test network with a light geth node.

The first account managed by the geth client must be unlocked to allow transactions to be sent. Firsly the geth javascript console must be started using:

geth attach http://0.0.0.0:8545

Unlock the account using:

personal.unlockAccount(eth.accounts[0],"password",0)

If an account has not been added to the geth client, it can be done as so:

personal.importRawKey("private key","password")

Other useful commands for the javascript console can be found here

Before running export the location of the binary compiled version of your smart contract, like:

  export EBETH_CONTRACT=~/foo

Initialise dependecies

  yarn install

Run

  yarn start

Workings

The daemon pulls the fixtures from a fantasy league API, and runs the deploy function periodically. The deploy function checks if a contract was already deployed for that fixture if not then it deploys the contract and schedules the startMatch function for it, the startMatch function schedules the stopMatch function for the fixture.