Code organization
Top level packages
chain - Code for generating the sequence of beacons (implementation of which is in chain/beacon) after setup.
boltdb - BoltDB storage backend.errors - common errors for the chain package.memdb - in-memory storage backend.postgresdb - PostgreSQL storage backend.
client - The drand client library - composition utilities for fail-over and reliable abstraction.
client/grpc - The concrete gRPC client implementation.client/http - The concrete HTTP client implementation.client/test - Mock client implementations for testing.
cmd - Binary entry points.
cmd/client - A client for fetching randomness.cmd/client/lib - A common library for creating a client shared by cmd/client and cmd/relay.cmd/drand-cli - The main drand group member binary.cmd/relay - A relay that pulls randomness from a drand group member and exposes an HTTP server interface.cmd/relay-gossip - A relay that pulls randomness from a group member and publishes it over a libp2p gossipsub topic.
crypto - Holds the schemes supported by drand.core - The primary Service interface of drand comamands.
core/migration - A library for migrating drand files from single-beacon to multi-beacon version.
demo - A framework for integration testing.deploy - Records of previous drand deployments.docker - Helpers for docker image packaging.docs - Here.entropy - A common abstraction for ingesting randomness.fs - Utilities for durable state storage.hooks - Docker helper entrypoint.http - The publicly exposed HTTP server for exposing randomness.key - Validation of signatures.log - Common logging library.lp2p - Utilities for constructing a libp2p (opens new window) host.
lp2p/client - The concrete gossip client implementation.
metrics - The prometheus metrics server.net - gRPC service handlers for inter-node communication.protobuf/drand - Definitions for the wire format interface of inter-node communication.test - Testing helper utilities.
test/docker - Files and related scripts for testing drand networks on docker.