UniverseStats

UniverseStats returns a set of aggregate statistics for the current state of the Universe. Stats returned include: total number of syncs, total number of proofs, and total number of known assets.

Source: universerpc/universe.proto

gRPC

rpc UniverseStats (StatsRequest) returns (StatsResponse);

REST

HTTP Method	Path
GET	/v1/taproot-assets/universe/stats

Code Samples

gRPC

Javascript

const fs = require('fs');
const grpc = require('@grpc/grpc-js');
const protoLoader = require('@grpc/proto-loader');

const GRPC_HOST = 'localhost:10029'
const MACAROON_PATH = 'TAPROOT-ASSETS_DIR/regtest/taproot-assets.macaroon'
const TLS_PATH = 'TAPROOT-ASSETS_DIR/tls.cert'

const loaderOptions = {
  keepCase: true,
  longs: String,
  enums: String,
  defaults: true,
  oneofs: true,
};
const packageDefinition = protoLoader.loadSync('universerpc/universe.proto', loaderOptions);
const universerpc = grpc.loadPackageDefinition(packageDefinition).universerpc;
process.env.GRPC_SSL_CIPHER_SUITES = 'HIGH+ECDSA';
const tlsCert = fs.readFileSync(TLS_PATH);
const sslCreds = grpc.credentials.createSsl(tlsCert);
const macaroon = fs.readFileSync(MACAROON_PATH).toString('hex');
const macaroonCreds = grpc.credentials.createFromMetadataGenerator(function(args, callback) {
  let metadata = new grpc.Metadata();
  metadata.add('macaroon', macaroon);
  callback(null, metadata);
});
let creds = grpc.credentials.combineChannelCredentials(sslCreds, macaroonCreds);
let client = new universerpc.Universe(GRPC_HOST, creds);
let request = {};
client.universeStats(request, function(err, response) {
  console.log(response);
});
// Console output:
//  {
//    "num_total_assets": <int64>,
//    "num_total_groups": <int64>,
//    "num_total_syncs": <int64>,
//    "num_total_proofs": <int64>,
//  }

Python

import codecs, grpc, os
# Generate the following 2 modules by compiling the universerpc/universe.proto with the grpcio-tools.
# See https://github.com/lightningnetwork/lnd/blob/master/docs/grpc/python.md for instructions.
import universe_pb2 as universerpc, universe_pb2_grpc as universestub

GRPC_HOST = 'localhost:10029'
MACAROON_PATH = 'TAPROOT-ASSETS_DIR/regtest/taproot-assets.macaroon'
TLS_PATH = 'TAPROOT-ASSETS_DIR/tls.cert'

# create macaroon credentials
macaroon = codecs.encode(open(MACAROON_PATH, 'rb').read(), 'hex')
def metadata_callback(context, callback):
  callback([('macaroon', macaroon)], None)
auth_creds = grpc.metadata_call_credentials(metadata_callback)
# create SSL credentials
os.environ['GRPC_SSL_CIPHER_SUITES'] = 'HIGH+ECDSA'
cert = open(TLS_PATH, 'rb').read()
ssl_creds = grpc.ssl_channel_credentials(cert)
# combine macaroon and SSL credentials
combined_creds = grpc.composite_channel_credentials(ssl_creds, auth_creds)
# make the request
channel = grpc.secure_channel(GRPC_HOST, combined_creds)
stub = universestub.UniverseStub(channel)
request = universerpc.StatsRequest()
response = stub.UniverseStats(request)
print(response)
# {
#    "num_total_assets": <int64>,
#    "num_total_groups": <int64>,
#    "num_total_syncs": <int64>,
#    "num_total_proofs": <int64>,
# }

REST

Javascript

const fs = require('fs');
const request = require('request');

const REST_HOST = 'localhost:8089'
const MACAROON_PATH = 'TAPROOT-ASSETS_DIR/regtest/taproot-assets.macaroon'

let options = {
  url: `https://${REST_HOST}/v1/taproot-assets/universe/stats`,
  // Work-around for self-signed certificates.
  rejectUnauthorized: false,
  json: true,
  headers: {
    'Grpc-Metadata-macaroon': fs.readFileSync(MACAROON_PATH).toString('hex'),
  },
}
request.get(options, function(error, response, body) {
  console.log(body);
});
// Console output:
//  {
//    "num_total_assets": <string>, // <int64> 
//    "num_total_groups": <string>, // <int64> 
//    "num_total_syncs": <string>, // <int64> 
//    "num_total_proofs": <string>, // <int64> 
//  }

Python

import base64, codecs, json, requests

REST_HOST = 'localhost:8089'
MACAROON_PATH = 'TAPROOT-ASSETS_DIR/regtest/taproot-assets.macaroon'
TLS_PATH = 'TAPROOT-ASSETS_DIR/tls.cert'

url = f'https://{REST_HOST}/v1/taproot-assets/universe/stats'
macaroon = codecs.encode(open(MACAROON_PATH, 'rb').read(), 'hex')
headers = {'Grpc-Metadata-macaroon': macaroon}
r = requests.get(url, headers=headers, verify=TLS_PATH)
print(r.json())
# {
#    "num_total_assets": <int64>,
#    "num_total_groups": <int64>,
#    "num_total_syncs": <int64>,
#    "num_total_proofs": <int64>,
# }

Shell

$ tapcli universe stats --help

NAME:
   tapcli universe stats - 
  Query for a set of aggregate statistics related to the local Universe
  server.  The 'universe stats asset' sub-command can be used to query
  for stats for a given asset, asset name, or type.
  

USAGE:
   tapcli universe stats command [command options] [arguments...]

COMMANDS:
   assets, a  query Universe stats for a single asset
   events, e  query Universe event stats

OPTIONS:
   --help, -h  show help
   

Messages

universerpc.StatsRequest

Source: universerpc/universe.proto

note

This request has no parameters.

universerpc.StatsResponse

Source: universerpc/universe.proto

Field	gRPC Type	REST Type
num_total_assets	int64	string
num_total_groups	int64	string
num_total_syncs	int64	string
num_total_proofs	int64	string