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sample-example.md

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Running the sample benchmark with an Ethereum dev network

To illustrate the way diablo operates, we utilise an Ethereum development network to provide a single-machine blockchain with instant confirmation. To do this, we utilise ganache cli, a simulation of the Ethereum blockchain.

To perform the benchmark as an example, follow the steps below.

Pre-requisites

  • ganache-cli
    • requires nodejs/npm
  • Go version 1.14+
  • Solidity solc verison 0.7.5 (prebuilt binary: here)

Steps

  • Build diablo
make
  • In one terminal, start the ganache developer network with the following parameters, as this generates keys used in the configuration file already provided.
./scripts/sample/start_testnet.sh
* Alternatively, you can also add the `-b` flag to make blocks created on a timed basis rather than per-transaction.
  • View the benchmark configuration in scripts/sample/workloads/ to a workload you would like to see, paying careful attention to the transaction intervals, as well as the number of secondaries and the number of threads.
  • In another terminal, start the diablo primary
./diablo primary -c scripts/sample/workloads/sample_contract_store.yaml -cc scripts/sample/blockchain-configs/ganache-using-keyfile.yaml -a "0.0.0.0:8323" --level DEBUG
  • You will need one terminal per secondary, so for 1 more secondary, start the secondary
./diablo secondary -m ":8323" -c scripts/sample/workloads/sample_contract_store.yaml -cc scripts/sample/blockchain-configs/ganache-using-keyfile.yaml --level DEBUG --timeout 2
* Launch the number of secondaries specified in the configuration file.

The benchmark should run to completion and return the results. Congratulations on running the benchmark!

WARN json: cannot unmarshal hex number with leading 0

2020-09-14T10:47:40.080+1000	WARN	clientinterfaces/ethereum_interface.go:107	json: cannot unmarshal hex number with leading zero digits into Go struct field rpcBlock.transactions of type *hexutil.Big
diablo-benchmark/blockchains/clientinterfaces.(*EthereumInterface).parseBlocksForTransactions
	diablo-benchmark/blockchains/clientinterfaces/ethereum_interface.go:107

Ganache has a slightly different block structure, which is incorrectly decoded by the Ethereum rpc client. This is a known issue with Go structs: