@ula-aca/credential

Universal Ledger Agent - Aries Cloudagent Credential Plugin

This package handles everything that has to do with issued credentials in Hyperledger Aries. It allows to retrieve and remove credentials issued to you.

Usage

CredentialController

import { EventHandler } from 'universal-ledger-agent'
import { LedgerController } from '@ula-aca/credential'

const credentialController = new CredentialController({
  basePath: 'https://aca-py-api.com'
})

const eventHandler = new EventHandler([credentialController])

@ula-aca/credential/get-credentials

Fetch credentials from wallet

import { EventHandler, UlaResponse } from 'universal-ledger-agent'
import {
  CredentialController,
  GetCredentialsMessage,
  GetCredentialsResult,
  CredentialMessageTypes
} from '@ula-aca/credential'

const credentialController = new CredentialController({
  basePath: 'https://aca-py-api.com'
})

const eventHandler = new EventHandler([credentialController])

const message: GetCredentialsMessage = {
  type: CredentialMessageTypes.GET_CREDENTIALS,
  body: {}
}

eventHandler.processMsg(message, (response: UlaResponse) => {
  if (response.statusCode < 200 || response.statusCode >= 300) {
    // error
  } else {
    // response.body is response from /credentials api endpoint in aca-py
    // https://ula-aca.github.io/aries-cloudagent-interface-javascript/#/credentials/get_credentials
    const result: GetCredentialsResult = response.body
  }
})

@ula-aca/credential/get-credential-by-id

Fetch a credential from wallet by id

import { EventHandler, UlaResponse } from 'universal-ledger-agent'
import {
  CredentialController,
  GetCredentialByIdMessage,
  GetCredentialByIdResult,
  CredentialMessageTypes
} from '@ula-aca/credential'

const credentialController = new CredentialController({
  basePath: 'https://aca-py-api.com'
})

const eventHandler = new EventHandler([credentialController])

const message: GetCredentialByIdMessage = {
  type: CredentialMessageTypes.GET_CREDENTIAL_BY_ID,
  body: {
    credential_id: '3253a790-e776-49e2-a30b-7f63401a4540'
  }
}

eventHandler.processMsg(message, (response: UlaResponse) => {
  if (response.statusCode < 200 || response.statusCode >= 300) {
    // error
  } else {
    // response.body is response from /credential/{id} api endpoint in aca-py
    // https://ula-aca.github.io/aries-cloudagent-interface-javascript/#/credentials/get_credential__id_
    const result: GetCredentialByIdResult = response.body
  }
})

@ula-aca/credential/remove-credential

Remove a credential from the wallet by id

import { EventHandler, UlaResponse } from 'universal-ledger-agent'
import {
  CredentialController,
  RemoveCredentialMessage,
  RemoveCredentialResult,
  CredentialMessageTypes
} from '@ula-aca/credential'

const credentialController = new CredentialController({
  basePath: 'https://aca-py-api.com'
})

const eventHandler = new EventHandler([credentialController])

const message: RemoveCredentialMessage = {
  type: CredentialMessageTypes.REMOVE_CREDENTIAL,
  body: {
    credential_id: '3253a790-e776-49e2-a30b-7f63401a4540'
  }
}

eventHandler.processMsg(message, (response: UlaResponse) => {
  if (response.statusCode < 200 || response.statusCode >= 300) {
    // error
  } else {
    // response.body is response from /credential/{id}/remove POST api endpoint in aca-py
    // https://ula-aca.github.io/aries-cloudagent-interface-javascript/#/credentials/post_credential__id__remove
    const result: RemoveCredentialResult = response.body
  }
})

Examples

For example usage see the examples/ directory.