Controller of aries-cloudagent-python (Go version)

Overview

• Implementation of Hyperledger Aries Cloud Agent - Python(ACA-Py) compatible Controller.

Repository structure

The controller implementation is in directory alice & faber.

Repository structure details:

/
├── alice/       # Alice (Holder) controller implementation
├── faber/       # Faber (Issuer&Verifier) controller implementation
├── util/        # Common utility functions
└── docker/      # docker-compose.yml to run ACA-Py agent

Prerequisite

• Go version 1.18 or higher for source compilation
• Docker & docker-compose for running ACA-Py

---

Steps to run demo

Run cloud agency with multitenancy support

• ACA-Py agency opens 8020 port (endpoint) and 8021 port (admin). Check admin (swagger API) http://localhost:8021/api/doc

$ cd docker
$ docker-compose up --build

Run Faber controller

• Faber controller opens 8040 port.
• It receives webhook message from Faber agent by POST http://localhost:8040/webhooks/topic/{topic}/
• Also, It presents invitation-url by GET http://localhost:8040/invitation-url
• Detailed configuration is in faber-config.yml

$ cd faber
$ go build
$ ./faber

Run Alice controller

• Alice controller polls the Alice agent periodically instead of receiving webhooks
  • Alice controller opens 8050 port. (deprecated)
  • It receives webhook message from alice agent by POST http://localhost:8050/webhooks/topic/{topic}/ (deprecated)
• When alice controller starts, it gets invitation from faber controller and proceeds connection, credential and proof(presentation) sequentially.
• Detailed configuration is in alice-config.yml

$ cd alice
$ go build
$ ./alice

Work flow

Provision (Issuer/Verifier or Holder)

Public API	Issuer API	Steward API
POST /multitenancy/wallet
	POST /wallet/did/create
		POST /ledger/register-nym
	POST /wallet/did/public

• Holder only needs POST /multitenancy/wallet.

Credential Preparation (Issuer)

Issuer API	Issuer webhook (topic, state)
POST /schemas
POST /credential-definitions	revocation_registry, init generated posted active

Connection

Issuer API	Holder API	Issuer webhook (topic, state)	Holder webhook (topic, state)
POST /connections/create-invitation
	POST /connections/receive-invitation		connections, invitation
	auto POST /connections/{conn_id}/accept-invitation	connections, request	connections, request
auto POST /connections/{conn_id}/accept-request		connections, response	connections, response
	auto POST /connections/{conn_id}/send-ping	connections, active	connections, active

Issue Credential

Issuer API	Holder API	Issuer webhook (topic, state)	Holder webhook (topic, state)
	POST /issue-credential/send-proposal	issue_credential, proposal_received	issue_credential, proposal_sent
POST /issue-credential/records/{credExId}/send-offer		issue_credential, offer_sent	issue_credential, offer_received
	POST /issue-credential/records/{credExId}/send-request	issue_credential, request_received	issue_credential, request_sent
auto POST /issue-credential/records/{credExId}/issue		issue_credential, credential_issued	issue_credential, credential_received
		issuer_cred_rev, issued
	auto POST /issue-credential/records/{credExId}/store	issue_credential, credential_acked	issue_credential, credential_acked

Presentation

Verifier API	Holder API	Verifier webhook (topic, state)	Holder webhook (topic, state)
	POST /present-proof/send-proposal	present_proof, proposal_received	present_proof, proposal_sent
POST /present-proof/send-request		present_proof, request_sent	present_proof, request_received
	GET /present-proof/records/{presExId}/credentials
	POST /present-proof/records/{presExId}/send-presentation	present_proof, presentation_received	present_proof, presentation_sent
auto POST /present-proof/records/{presExId}/verify-presentation		present_proof, verified	present_proof, presentation_acked