The OAuth2 ForgeRock Identity Microservices

ForgeRock Identity Microservices

ForgeRock released in Q4 2017, an Early Access (aka beta) program for three key Identity Microservices within a compact, single-purpose code set for consumer-scale deployments. For companies who are deploying stateless Microservices architectures, these microservices offer a micro-gateway enabled solution that enables service trust, policy-enforced identity propagation and even OAuth2-based delegation. The stateless architecture of FR Identity Microservices allows for implementing a sidecar-friendly microgateway deployment pattern.

I blogged about it here. The sign up form is here.

The Microservices

OAuth2 Token Issuance

Enables service to service authentication using client-credential grant type. These “bearer” tokens facilitate trust up and down the call chain.

We currently support RSA, EC, and HMAC signing, with the following algorithms:

  • HS256
  • HS384
  • HS512
  • RS256
  • ES256
  • ES384
  • ES512

Token Validation

Supports introspection of OAuth2 / OIDC tokens issued by an OAuth2 AS as well as native AM tokens. Token validations performed using either configured keys, or lookup via JWK URI for issuer and kid verification.

One or more Token Introspection API implementations can be configured by setting the value to a comma-separated list of implementation names. Each implementation is given a chance to handle the token, in given order, until an implementation successfully handles the token. An error response occurs if no implementation successfully introspects a given token.

The following implementations are provided:

  • json : Configured by a JSON file.
  • openam : Proxies introspect calls to ForgeRock Access Management.

Token Exchange

Supports exchanging stateless OAuth2 access tokens and native AM tokens for hybrid tokens that grant specific entitlements per resourceor audience requested. Implements the draft OAuth2 token-exchange specification. Offers no-fuss declarative (“local”) policy enforcement inside the pod without needing to “call home” for identity data. Also provides policy based entitlement decisions by calling out to ForgeRock Access Management.

The Token-Exchange Policy is a pluggable service which determines whether or not a given token exchange may proceed. The service also determines what audience, scope, and so forth the generated token will have. The following implementations are provided:

  • json (default) : Configured by a JSON file.
  • jwt : Simply returns a JWT for any token that can be introspected.
  • openam : Uses a ForgeRock Access Management Policy Set.

Cloud and Platform

Docker and Kubernetes

Dockerfile is bundled with the binary. Soon there will be a docker repository from where the images could be pulled by evaluators.

A Kubernetes manifest is also provided that demonstrates using environment variables to configure a simple demo instance.

Metrics and Prometheus Integration

The microservices are instrumented to publish basic request metrics and a Prometheus endpoint is also provided, which is convenient for monitoring published metrics.

Audit Tracking

Each incoming HTTP request is assigned a transaction ID, for audit logging purposes, which by default is a UUID. ForgeRock Microservices like other products support propagation of a transaction ID between point-to-point service calls.

Cloud Foundry

The standard binary in Zip format is also directly deploy-able to Cloud Foundry, and will get recognized by the Cloud Foundry Java build pack as a “dist zip” format.

Client Credential Repository

ForgeRock Identity Microservices support Cassandra, MongoDB, any LDAP v3 including ForgeRock Directory Services.

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