credo-ts-indy-vdr-proxy-server

Aries JavaScript Indy VDR Proxy Server

A server that exposes a REST API to resolve objects in Indy networks. It is built in NestJs and based on Credo.

Although it can be used as a general gateway to multiple Indy networks (much in the same way Universal Resolver does), this server was developed to reduce the workload needed by a mobile application, as multiple ZMQ sockets must be opened when supporting multiple Indy networks and there might be issues in some mobile OS and Mobile Network Operators.

Usage

In order to run the server in standalone mode, you just need to install all dependencies by doing:

yarn install

and then go to server directory and execute:

cd packages/server
yarn run start

By default, Indy VDR Proxy Server runs at port 3000 and supports only BCovrin Test network. This can be overriden by either updating the configuration file located at res/app.config.json or providing your own by setting the environment variable INDY_VDR_PROXY_CONFIG_PATH. E.g.:

INDY_VDR_PROXY_CONFIG_PATH=/my-directory/my-config.file.json yarn run start

If you want to integrate Indy VDR Proxy in your own NestJS-based project, you can by importing IndyVdrProxyServerModule. You'll need to call register method passing an IndyVdrProxyAgent instance (which could be your own AFJ-based Agent as long as it contains all required modules):

import { setupAgent } from "credo-ts-indy-vdr-proxy-server"

IndyVdrProxyModule.register(setupAgent({ networks }))

Endpoints

All endpoints use HTTP GET method.

• /did/{fully qualified or legacy Indy did}: resolve a DID Document
• /schema/{fully qualified AnonCreds schema ID}: resolve an AnonCreds Schema
• /credential-definition/{fully qualified AnonCreds credential definition ID}: resolve an AnonCreds Credential Definition
• /revocation-registry-definition/{fully qualified AnonCreds revocation registry definition ID}: resolve an AnonCreds Revocation Registry Definition
• /revocation-status-list/{fully qualified AnonCreds revocation registry definition ID}/{timestamp}: resolve an AnonCreds Revocation Status List

The response for each follows the format used in @credo-ts/anoncreds module. It's a JSON containing three elements:

{
  objectTypeInCamelCase: { ... },
  objectTypeInCamelCaseMetadata: { ... };
  resolutionMetadata: { error?: 'invalid' | 'notFound' | 'unsupportedAnonCredsMethod' | string;
    message?: string;};
}