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WRKChain SDK

Join the chat at https://gitter.im/unification-com/wrkchain

The WRKChain SDK is a set of tools to quickly configure and deploy a WRKChain environment

WRKChains are rooted on Mainchain with their own WRKChainRoot smart contract, and also run their own WRKChain Oracle, which periodically reads the WRKChain's block headers, and writes the hashes/merkle roots to its WRKChainRoot smart contract on Mainchain.

The WRKChain SDK will accept a configurable JSON, and generate for your WRKChain:

  • The WRKChain's genesis.json Genesis block
  • Node keys and associated files
  • A Docker Composition for testing purposes
  • An Ansible configuration to aid production deployment
  • Full customised documentation on how to deploy and run your WRKChain

Configuring a WRKChain

See the WRKChain SDK Wiki for full documentation and configuration options.

Note: Unless modifications are made to the configuration, there is no need to run this SDK more than once. The files generated in the build directory can be packaged and distributed to all hosts in the configuration.

Generating a WRKChain

Once the configuration options have been set and saved in a config.json, the WRKChain environment can be generated using one of the following methods.

Note: Unless modifications are made to the configuration, there is no need to run this SDK more than once. The files generated in the build directory can be packaged and distributed to all hosts in the configuration.

Docker

The quickest method is to run the Dockerised SDK. You will need to install both Docker and Docker compose.

Either copy one of the sample config files from sdk/tests/test_data to wrkchain.json, or roll your own. For example

cp sdk/tests/test_data/simple.json ./wrkchain.json

Edit as wrkchain.json required, then run:

make sdk

This will generate everything required in the build directory.

Running the Python script directly

It is also possible to run the SDK without Docker.

Dependencies

The SDK is dependent upon go-ethereum's bootnode CMD, which can be installed as follows:

  1. install Go from https://golang.org/doc/install
  2. go get github.com/ethereum/go-ethereum
  3. go install github.com/ethereum/go-ethereum/cmd/bootnode

It is also dependant on Pandoc, which is available via many package managers https://pandoc.org/installing.html

Finally, install the Python requirements:

pip install -r requirements.txt

Running the SDK

Once the dependencies are satisfied, the SDK can be run as follows:

cd sdk
python -m wrkchain.sdk generate_wrkchain /path/to/config.json ../build

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SDK for creating and deploying a WRKChain

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