@tonic-foundation/data-client - v0.0.5

Tonic indexed market data API.

yarn add @tonic-foundation/data-client

(async () => {
  const indexer = new TonicIndexer('https://data-api.mainnet.tonic.foundation');

  // get supported markets
  const markets = await indexer.markets();

  // stream recent trades
  console.log('getting trade stream for market', markets[0].symbol);
  const [stream, stop] = indexer.recentTradeStream(markets[0].id);
  setTimeout(stop, 10_000);
  for await (const trade of stream) {
    console.log(trade);
  }
  console.log('stopped');
})();

Run an instance of the Tonic indexer.

Set the following environment variables.

# Point to the same DB as the indexer. A read-only user is OK.
export POSTGRES_CONNECTION=postgresql://...

export POSTGRES_CA_CERT=Ls0tLS1...

Start the API.

# build the server
yarn build:all

# run it
yarn api start
{"level":30,"time":1659042446457,"pid":82965,"hostname":"workstation.local","msg":"initialized sentry (env=testnet,samplerate=0.01)"}
🚀  Fastify server running on port 3006
{"level":30,"time":1659042446589,"pid":82965,"hostname":"workstation.local","msg":"Server listening at http://127.0.0.1:3006"}

Set postgres connection details as shown above (write user required)

# Add tokens used by the market. Tokens only need to be added once.
NEAR_ENV=mainnet yarn api add-token --token_id usn # token ID is contract ID
NEAR_ENV=mainnet yarn api add-token --token_id near # "near" allowed for native near

# Add market. Symbol must be lowercase.
NEAR_ENV=mainnet yarn api add-market --market_id AFh8ZQdWvyBJqa9acpoKc1pXwQLAzbHmQpyNi3QfUocr --symbol pem/usn

• Migrations are all in the indexer repo. We'll combine the two repos in the future.