Hydra Indexer Gateway

Hydra Indexer Gateway is a GraphQL server exposing the indexed Substrate data (primarily, extrinsics and events), indexed by Hydra Indexer.

Installation

The project is built using Warthog library.

Local development

For local development, first inspect env.yml and generate a dev .env file using run yarn config:dev. Then the server can be run with yarn start:dev

Production/Docker

For production a pre-built Docker image in recommended. The following environment variables must be set:

Variable	Description
WARTHOG_STARTER_DB_DATABASE	Indexer database name
WARTHOG_STARTER_DB_HOST	Indexer database host
WARTHOG_STARTER_DB_PORT	Indexer database port
WARTHOG_STARTER_DB_USERNAME	User to access the indexer database
WARTHOG_STARTER_DB_PASSWORD	User password
WARTHOG_STARTER_REDIS_URI	Redis connection string (must be the same as used by the Indexer)
PORT	Port at which the GraphQL server will listen for connections