maaz519
c50a501f32
Tasks 9.1+9.2: contracts (CapabilityRequest/Result/Provider, PolicyObligation) + service CapabilityBroker that fails closed via opa (PolicyDeniedError, nothing sent), enforces obligations before any provider call (DENY_OUTBOUND/REVIEW → BLOCKED; MASK/REDACT → mask payload field), then routes to a CapabilityProviderRegistry (SandboxProvider default; env-gated HttpProvider overrides per channel; unknown channel fails closed). 5 tests: allow/deny/block/redact/unknown-channel. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
58 lines
2.5 KiB
TypeScript
58 lines
2.5 KiB
TypeScript
import { Inject, Injectable } from '@nestjs/common';
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import type { CapabilityRequest, CapabilityResult, IiosPlatformPorts } from '@insignia/iios-contracts';
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import { PLATFORM_PORTS } from '../platform/platform-ports';
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import { decideOrThrow } from '../platform/fail-closed';
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import { CapabilityProviderRegistry } from './capability.registry';
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/**
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* The single governed egress boundary (P9). Every outbound action flows through
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* here: it fails closed on policy (nothing sent unless explicitly allowed),
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* enforces the policy's obligations BEFORE a provider is ever called, then routes
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* to the channel's provider. It is the concrete realization of the `capability`
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* platform port — a real broker replacing the permissive P1 stub.
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*/
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@Injectable()
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export class CapabilityBroker {
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constructor(
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@Inject(PLATFORM_PORTS) private readonly ports: IiosPlatformPorts,
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private readonly registry: CapabilityProviderRegistry,
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) {}
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async invoke(req: CapabilityRequest): Promise<CapabilityResult> {
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// 1. Fail-closed policy gate. Deny/timeout ⇒ PolicyDeniedError, nothing sent.
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const decision = await decideOrThrow(this.ports, {
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action: `iios.capability.${req.capability}`,
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scopeId: req.scopeId,
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channelType: req.channelType,
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target: req.target,
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});
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// 2. Enforce obligations BEFORE touching a provider.
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for (const ob of decision.obligations) {
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if (ob.kind === 'DENY_OUTBOUND' || ob.kind === 'REVIEW') {
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return { providerRef: 'blocked', outcome: 'BLOCKED', errorCode: ob.kind };
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}
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}
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const payload = this.applyMasks(req.payload, decision.obligations);
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// 3. Route to the channel's provider (unknown channel fails closed in the registry).
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const provider = this.registry.forChannel(req.channelType);
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const result = await provider.send({ ...req, payload });
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// 4. Normalize the provider's outcome.
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const outcome = result.outcome === 'SENT' ? 'SENT' : result.outcome === 'RATE_LIMITED' ? 'RATE_LIMITED' : 'FAILED';
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return { providerRef: result.providerRef, outcome, errorCode: result.errorCode, latencyMs: result.latencyMs };
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}
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private applyMasks(
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payload: Record<string, unknown>,
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obligations: { kind: string; target?: string }[],
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): Record<string, unknown> {
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const masks = obligations.filter((o) => (o.kind === 'MASK' || o.kind === 'REDACT') && o.target);
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if (masks.length === 0) return payload;
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const out = { ...payload };
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for (const m of masks) out[m.target as string] = '[REDACTED]';
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return out;
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}
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}
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