Rule

Source: src/AWS/VpcLattice/Rule.ts

An Amazon VPC Lattice listener rule — matches HTTP requests by method, path, or headers and forwards them to target groups (or answers with a fixed response), evaluated in priority order before the listener’s default action.

Creating Rules

Path-Prefix Rule Forwarding to a Target Group

const rule = yield* Rule("ApiRule", {
  serviceIdentifier: service.serviceId,
  listenerIdentifier: listener.listenerId,
  priority: 10,
  match: { httpMatch: { pathMatch: { match: { prefix: "/api" } } } },
  action: {
    forward: {
      targetGroups: [
        { targetGroupIdentifier: targets.targetGroupId, weight: 100 },
      ],
    },
  },
});

Method Match with a Fixed Response

const rule = yield* Rule("BlockDeletes", {
  serviceIdentifier: service.serviceId,
  listenerIdentifier: listener.listenerId,
  priority: 1,
  match: { httpMatch: { method: "DELETE" } },
  action: { fixedResponse: { statusCode: 403 } },
});