flare

README

Flare

Node implementation for the Flare network.

Installation

Flare is an incredibly lightweight protocol, so the minimum computer requirements are quite modest. Note that as network usage increases, hardware requirements may change.

• CPU: Equivalent of 8 AWS vCPU
• RAM: 16 GB
• Storage: 200 GB
• OS: Ubuntu 18.04/20.04 or macOS >= 10.15 (Catalina)
• Network: Reliable IPv4 or IPv6 network connection, with an open public port.
• Software Dependencies:
  • Go version >= 1.16.8 and set up $GOPATH.
  • gcc
  • g++

Native Install

Clone the Flare repository:

git clone https://github.com/flare-foundation/flare.git

Building the Flare Executable

Build Flare using the build script:

./scripts/build.sh

The Flare binary, named flare, is in the build directory.

Running Flare

Connecting to Songbird

To connect to the Songbird canary network, run:

export WEB3_API=enabled
export FBA_VALs=./scripts/configs/songbird/fba_validators.json
./build/flare --network-id=songbird \
  --bootstrap-ips="$(curl -m 10 -sX POST --data '{ "jsonrpc":"2.0", "id":1, "method":"info.getNodeIP" }' -H 'content-type:application/json;' https://songbird.flare.network/ext/info | jq -r ".result.ip")" \
  --bootstrap-ids="$(curl -m 10 -sX POST --data '{ "jsonrpc":"2.0", "id":1, "method":"info.getNodeID" }' -H 'content-type:application/json;' https://songbird.flare.network/ext/info | jq -r ".result.nodeID")"

You should see some fire ASCII art and log messages.

You can use Ctrl+C to kill the node.

Please note that you currently need to be whitelisted to connect to beacon node.

Launching Flare locally

To create a single node local test network, run:

./build/flare --network-id=local \
  --staking-enabled=false \
  --snow-sample-size=1 \
  --snow-quorum-size=1

This launches a Flare network with one node.

Generating Code

Flare uses multiple tools to generate efficient and boilerplate code.

Running protobuf codegen

To regenerate the protobuf go code, run scripts/protobuf_codegen.sh from the root of the repo.

This should only be necessary when upgrading protobuf versions or modifying .proto definition files.

To use this script, you must have protoc (v3.17.3), protoc-gen-go (v1.26.0) and protoc-gen-go-grpc (v1.1.0) installed. protoc must be on your $PATH.

To install the protoc dependencies:

go install google.golang.org/protobuf/cmd/protoc-gen-go@v1.26
go install google.golang.org/grpc/cmd/protoc-gen-go-grpc@v1.1

If you have not already, you may need to add $GOPATH/bin to your $PATH:

export PATH="$PATH:$(go env GOPATH)/bin"

If you extract protoc to ~/software/protobuf/, the following should work:

export PATH=$PATH:~/software/protobuf/bin/:~/go/bin
go get google.golang.org/protobuf/cmd/protoc-gen-go
go get google.golang.org/protobuf/cmd/protoc-gen-go-grpc
scripts/protobuf_codegen.sh

For more information, refer to the GRPC Golang Quick Start Guide.

Security Bugs

We and our community welcome responsible disclosures.

If you've discovered a security vulnerability, please report it via our contact form. Valid reports will be eligible for a reward (terms and conditions apply).