Hyperledger Sawtooth is an enterprise solution for building, deploying, and running distributed ledgers (also called blockchains). It provides an extremely modular and flexible platform for implementing transaction-based updates to shared state between untrusted parties coordinated by consensus algorithms.

The Sawtooth SDK for Go provides a number of useful components that simplify developing Go applications which interface with the Sawtooth platform. These include modules to sign Transactions, read state, and create Transaction Processors. For full usage and installation instructions please reference the official Sawtooth documentation below:

• Hyperledger Sawtooth Official Documentation
• Sawtooth Application Developer's Guide
• Sawtooth Go SDK Guide

To start using the SDK in your project, simply run inside your project root:

go get github.com/hyperledger/sawtooth-sdk-go

As of v0.1.4, this SDK is a Go Module and can simply be installed and without a further code generation step. For earlier versions, you must follow the instructions below to generate protobuf code with go generate.

If any update requires any additional or upgraded dependencies, you should do the upgrade using go get, then run go mod tidy. In the case that any dependency added or modified, make sure to commit the updated go.mod and go.sum files.

When maintainers and contributors wish to update the protobuf definitions, they will need to run go generate after making any changes. go generate will remove the pre-existing protobuf directory, and generate a new protobuf directory based on .proto files in the protos directory. Any files modified in the protobuf directory should be committed.

To run go generate, you should simply change to the repo directory and execute the command:

cd sawtooth-sdk-go
go generate

The generate scripts do have some dependencies that can be non-trivial to install on some systems. In this case, you can use Docker to perform the generation as follows:

cd sawtooth-sdk-go
docker build . -t sawtooth-sdk-go
docker run -v $(pwd):/go/src/github.com/hyperledger/sawtooth-sdk-go sawtooth-sdk-go