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feat(ql3): audit legacy shadow terminal windows
This commit is contained in:
whyour
@@ -0,0 +1,641 @@
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import type {
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ExecutionOrigin,
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RunAttemptStatus,
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RunStatus,
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} from '../domain/run';
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import { EXECUTION_ORIGINS } from '../domain/run';
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import {
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MAX_LEGACY_SHADOW_TERMINAL_EVIDENCE_PER_PAGE,
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MAX_LEGACY_SHADOW_TERMINAL_PAGE_SIZE,
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type LegacyShadowTerminalAttemptEvidence,
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type LegacyShadowTerminalCandidate,
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type LegacyShadowTerminalCursor,
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type LegacyShadowTerminalDifferenceSource,
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type LegacyShadowTerminalPage,
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type LegacyTerminalEvidence,
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type LegacyTerminalOutcome,
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} from '../ports/legacyShadowTerminalDifference';
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export type LegacyShadowTerminalAuditProfile = 'edge' | 'standalone';
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export const LEGACY_SHADOW_TERMINAL_CATEGORIES = Object.freeze([
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'matched',
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'shadow_not_terminal',
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'shadow_attempt_missing',
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'shadow_attempt_ambiguous',
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'legacy_evidence_missing',
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'legacy_evidence_ambiguous',
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'status_mismatch',
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'field_mismatch',
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] as const);
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export type LegacyShadowTerminalCategory =
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(typeof LEGACY_SHADOW_TERMINAL_CATEGORIES)[number];
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export type LegacyShadowTerminalCategoryCounts = Record<
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LegacyShadowTerminalCategory,
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number
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>;
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export interface LegacyShadowTerminalDimensionCounts {
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compared: number;
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matched: number;
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mismatched: number;
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unavailable: number;
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}
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export interface LegacyShadowTerminalDimensions {
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status: LegacyShadowTerminalDimensionCounts;
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exitCode: LegacyShadowTerminalDimensionCounts;
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startedAt: LegacyShadowTerminalDimensionCounts;
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finishedAt: LegacyShadowTerminalDimensionCounts;
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logArtifact: LegacyShadowTerminalDimensionCounts;
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}
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export interface LegacyShadowTerminalOriginSummary
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extends LegacyShadowTerminalCategoryCounts {
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origin: ExecutionOrigin;
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scanned: number;
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}
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export type LegacyShadowTerminalAuditAssessment =
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| 'matched'
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| 'empty'
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| 'differences_found'
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| 'window_open'
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| 'incomplete';
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export type LegacyShadowTerminalAuditStopReason =
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| 'complete'
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| 'page_limit'
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| 'cursor_stalled';
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export interface LegacyShadowTerminalDifferenceReport {
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schema: 'qinglong/legacy-shadow-terminal-difference-report@v1';
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profile: LegacyShadowTerminalAuditProfile;
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observedAtMs: number;
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window: {
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basis: 'shadow_run_created_at';
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startInclusiveMs: number;
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endExclusiveMs: number;
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minimumSettlingAgeMs: number;
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closed: boolean;
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};
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coverage: {
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direction: 'shadow_to_legacy';
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cohort: 'legacy_owned_shadow_runs';
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legacyWithoutShadow: 'not_measured';
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};
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budget: { pageSize: number; maxPages: number; maxCandidates: number };
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pages: number;
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scanned: number;
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stopReason: LegacyShadowTerminalAuditStopReason;
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remaining: boolean;
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evidenceComplete: boolean;
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evidenceOverflowPages: number;
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assessment: LegacyShadowTerminalAuditAssessment;
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counts: LegacyShadowTerminalCategoryCounts;
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byOrigin: readonly LegacyShadowTerminalOriginSummary[];
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dimensions: LegacyShadowTerminalDimensions;
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terminalAgreementPermille?: number;
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fullyComparablePermille?: number;
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}
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export interface LegacyShadowTerminalAuditorOptions {
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profile: LegacyShadowTerminalAuditProfile;
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projectId?: string;
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origins: readonly ExecutionOrigin[];
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windowStartMs: number;
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windowEndMs: number;
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observedAtMs?: number;
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minimumSettlingAgeMs?: number;
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correlationToleranceMs?: number;
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clock?: { now(): number };
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}
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interface Selection {
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status: 'matched' | 'missing' | 'ambiguous';
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evidence?: LegacyTerminalEvidence;
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}
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interface Classification {
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category: LegacyShadowTerminalCategory;
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fullyComparable: boolean;
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}
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const BUDGETS: Readonly<
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Record<
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LegacyShadowTerminalAuditProfile,
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{ pageSize: number; maxPages: number }
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>
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> = {
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edge: { pageSize: 8, maxPages: 1 },
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standalone: { pageSize: 32, maxPages: 4 },
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};
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const MAX_CONFIGURED_ORIGINS = 7;
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const MAX_CORRELATION_TOLERANCE_MS = 60_000;
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const EXECUTION_ORIGIN_SET = new Set<ExecutionOrigin>(EXECUTION_ORIGINS);
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function assertSafeInteger(name: string, value: number): void {
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if (!Number.isSafeInteger(value) || value < 0) {
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throw new RangeError(`${name} must be a non-negative safe integer`);
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}
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}
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function emptyCounts(): LegacyShadowTerminalCategoryCounts {
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return Object.fromEntries(
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LEGACY_SHADOW_TERMINAL_CATEGORIES.map((category) => [category, 0]),
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) as LegacyShadowTerminalCategoryCounts;
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}
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function emptyDimension(): LegacyShadowTerminalDimensionCounts {
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return { compared: 0, matched: 0, mismatched: 0, unavailable: 0 };
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}
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function emptyDimensions(): LegacyShadowTerminalDimensions {
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return {
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status: emptyDimension(),
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exitCode: emptyDimension(),
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startedAt: emptyDimension(),
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finishedAt: emptyDimension(),
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logArtifact: emptyDimension(),
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};
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}
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function originSummary(
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origin: ExecutionOrigin,
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): LegacyShadowTerminalOriginSummary {
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return { origin, scanned: 0, ...emptyCounts() };
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}
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function compareDimension(
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target: LegacyShadowTerminalDimensionCounts,
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left: unknown,
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right: unknown,
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matches: (left: unknown, right: unknown) => boolean = (a, b) => a === b,
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): boolean | undefined {
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if (left === undefined || right === undefined) {
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target.unavailable += 1;
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return undefined;
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}
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target.compared += 1;
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if (matches(left, right)) {
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target.matched += 1;
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return true;
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}
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target.mismatched += 1;
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return false;
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}
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function markUnavailable(dimensions: LegacyShadowTerminalDimensions): void {
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for (const dimension of Object.values(dimensions)) {
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dimension.unavailable += 1;
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}
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}
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function expectedOutcome(
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status: RunStatus | RunAttemptStatus,
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): LegacyTerminalOutcome | undefined {
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if (status === 'succeeded') return 'succeeded';
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if (status === 'failed') return 'failed';
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if (status === 'cancelled') return 'stopped';
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return undefined;
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}
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function isTerminalShadowStatus(status: RunStatus | RunAttemptStatus): boolean {
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return ['succeeded', 'failed', 'cancelled', 'timed_out', 'lost'].includes(
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status,
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);
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}
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function selectEvidence(
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candidate: LegacyShadowTerminalCandidate,
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attempt: LegacyShadowTerminalAttemptEvidence,
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evidence: readonly LegacyTerminalEvidence[],
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toleranceMs: number,
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): Selection {
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const direct = evidence.filter(
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(item) =>
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item.attemptId === attempt.attemptId || item.runId === candidate.runId,
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);
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if (
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direct.some(
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(item) =>
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(item.attemptId !== undefined &&
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item.attemptId !== attempt.attemptId) ||
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(item.runId !== undefined && item.runId !== candidate.runId),
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)
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) {
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return { status: 'ambiguous' };
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}
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if (direct.length === 1) return { status: 'matched', evidence: direct[0] };
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if (direct.length > 1) return { status: 'ambiguous' };
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if (candidate.legacyCronId === undefined) return { status: 'missing' };
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const sameCron = evidence.filter(
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(item) => item.legacyCronId === candidate.legacyCronId,
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);
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const byLog =
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attempt.logArtifactId === undefined
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? []
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: sameCron.filter((item) => item.logArtifactId === attempt.logArtifactId);
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const byPid =
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attempt.pid === undefined
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? []
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: sameCron.filter((item) => item.pid === attempt.pid);
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if (attempt.logArtifactId !== undefined && attempt.pid !== undefined) {
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const byPidSet = new Set(byPid);
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const intersection = byLog.filter((item) => byPidSet.has(item));
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if (intersection.length === 1) {
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return { status: 'matched', evidence: intersection[0] };
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}
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if (intersection.length > 1 || byLog.length > 1 || byPid.length > 1) {
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return { status: 'ambiguous' };
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}
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if (byLog.length === 1 && byPid.length === 0) {
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return { status: 'matched', evidence: byLog[0] };
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}
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if (byPid.length === 1 && byLog.length === 0) {
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return { status: 'matched', evidence: byPid[0] };
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}
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if (byLog.length === 1 && byPid.length === 1) {
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return { status: 'ambiguous' };
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}
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} else if (byLog.length === 1) {
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return { status: 'matched', evidence: byLog[0] };
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} else if (byLog.length > 1) {
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return { status: 'ambiguous' };
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} else if (byPid.length === 1) {
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return { status: 'matched', evidence: byPid[0] };
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} else if (byPid.length > 1) {
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return { status: 'ambiguous' };
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}
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const shadowStartedAtMs = attempt.startedAtMs ?? candidate.startedAtMs;
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if (shadowStartedAtMs === undefined) return { status: 'missing' };
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const byStart = sameCron.filter(
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(item) => Math.abs(item.startedAtMs - shadowStartedAtMs) <= toleranceMs,
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);
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if (byStart.length === 1) {
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return { status: 'matched', evidence: byStart[0] };
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}
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return { status: byStart.length > 1 ? 'ambiguous' : 'missing' };
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}
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function classify(
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candidate: LegacyShadowTerminalCandidate,
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evidence: readonly LegacyTerminalEvidence[],
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evidenceTruncated: boolean,
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toleranceMs: number,
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dimensions: LegacyShadowTerminalDimensions,
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): Classification {
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if (
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!isTerminalShadowStatus(candidate.runStatus) ||
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candidate.finishedAtMs === undefined
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) {
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markUnavailable(dimensions);
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return { category: 'shadow_not_terminal', fullyComparable: false };
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}
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if (candidate.attemptCount === 0 || candidate.attempt === undefined) {
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markUnavailable(dimensions);
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return { category: 'shadow_attempt_missing', fullyComparable: false };
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}
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if (candidate.attemptCount !== 1) {
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markUnavailable(dimensions);
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return { category: 'shadow_attempt_ambiguous', fullyComparable: false };
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}
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if (
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!isTerminalShadowStatus(candidate.attempt.status) ||
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candidate.attempt.finishedAtMs === undefined
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) {
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markUnavailable(dimensions);
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return { category: 'shadow_not_terminal', fullyComparable: false };
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}
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if (evidenceTruncated) {
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markUnavailable(dimensions);
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return { category: 'legacy_evidence_ambiguous', fullyComparable: false };
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}
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const selection = selectEvidence(
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candidate,
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candidate.attempt,
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evidence,
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toleranceMs,
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);
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if (selection.status === 'ambiguous') {
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markUnavailable(dimensions);
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return { category: 'legacy_evidence_ambiguous', fullyComparable: false };
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}
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if (selection.status === 'missing' || selection.evidence === undefined) {
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markUnavailable(dimensions);
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return { category: 'legacy_evidence_missing', fullyComparable: false };
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}
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const expectedRunOutcome = expectedOutcome(candidate.runStatus);
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const expectedAttemptOutcome = expectedOutcome(candidate.attempt.status);
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let statusMatches: boolean | undefined;
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if (
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expectedRunOutcome === undefined ||
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expectedAttemptOutcome === undefined
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) {
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dimensions.status.unavailable += 1;
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} else if (expectedRunOutcome !== expectedAttemptOutcome) {
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dimensions.status.compared += 1;
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dimensions.status.mismatched += 1;
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statusMatches = false;
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} else {
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statusMatches = compareDimension(
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dimensions.status,
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expectedRunOutcome,
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selection.evidence.outcome,
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);
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}
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if (
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expectedRunOutcome === undefined ||
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expectedAttemptOutcome === undefined ||
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expectedRunOutcome !== expectedAttemptOutcome ||
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statusMatches !== true
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) {
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for (const dimension of [
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dimensions.exitCode,
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dimensions.startedAt,
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dimensions.finishedAt,
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dimensions.logArtifact,
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]) {
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dimension.unavailable += 1;
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}
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return { category: 'status_mismatch', fullyComparable: false };
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}
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const exitMatches = compareDimension(
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dimensions.exitCode,
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candidate.attempt.exitCode,
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selection.evidence.exitCode,
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);
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const startMatches = compareDimension(
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dimensions.startedAt,
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candidate.attempt.startedAtMs ?? candidate.startedAtMs,
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selection.evidence.startedAtMs,
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(left, right) => Math.abs(Number(left) - Number(right)) <= toleranceMs,
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);
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const finishMatches = compareDimension(
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dimensions.finishedAt,
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candidate.attempt.finishedAtMs ?? candidate.finishedAtMs,
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selection.evidence.finishedAtMs,
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(left, right) => Math.abs(Number(left) - Number(right)) <= toleranceMs,
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);
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const logMatches = compareDimension(
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dimensions.logArtifact,
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candidate.attempt.logArtifactId,
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selection.evidence.logArtifactId,
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);
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const compared = [true, exitMatches, startMatches, finishMatches, logMatches];
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const hasMismatch = compared.includes(false);
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return {
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category: hasMismatch ? 'field_mismatch' : 'matched',
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fullyComparable: compared.every((value) => value === true),
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};
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}
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function sameCursor(
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left: LegacyShadowTerminalCursor | undefined,
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right: LegacyShadowTerminalCursor,
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): boolean {
|
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return (
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left !== undefined &&
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left.createdAtMs === right.createdAtMs &&
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left.runId === right.runId
|
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);
|
||||
}
|
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function validatePage(
|
||||
page: LegacyShadowTerminalPage,
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cursor: LegacyShadowTerminalCursor | undefined,
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limit: number,
|
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allowedOrigins: ReadonlySet<ExecutionOrigin>,
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windowStartMs: number,
|
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windowEndMs: number,
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): void {
|
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if (page.candidates.length > limit) {
|
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throw new Error('Legacy Shadow terminal source exceeded candidate limit');
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}
|
||||
if (
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page.evidence.length >
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Math.min(
|
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MAX_LEGACY_SHADOW_TERMINAL_EVIDENCE_PER_PAGE,
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page.candidates.length * 8,
|
||||
)
|
||||
) {
|
||||
throw new Error('Legacy Shadow terminal source exceeded evidence limit');
|
||||
}
|
||||
let previous = cursor;
|
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const runIds = new Set<string>();
|
||||
for (const candidate of page.candidates) {
|
||||
if (
|
||||
candidate.runId.length === 0 ||
|
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runIds.has(candidate.runId) ||
|
||||
!allowedOrigins.has(candidate.origin) ||
|
||||
!Number.isSafeInteger(candidate.createdAtMs) ||
|
||||
candidate.createdAtMs < windowStartMs ||
|
||||
candidate.createdAtMs >= windowEndMs ||
|
||||
(previous !== undefined &&
|
||||
(candidate.createdAtMs < previous.createdAtMs ||
|
||||
(candidate.createdAtMs === previous.createdAtMs &&
|
||||
candidate.runId <= previous.runId)))
|
||||
) {
|
||||
throw new Error('Legacy Shadow terminal source returned an invalid page');
|
||||
}
|
||||
runIds.add(candidate.runId);
|
||||
previous = { createdAtMs: candidate.createdAtMs, runId: candidate.runId };
|
||||
}
|
||||
if (page.truncated) {
|
||||
if (
|
||||
page.candidates.length !== limit ||
|
||||
page.nextCursor === undefined ||
|
||||
previous === undefined ||
|
||||
page.nextCursor.createdAtMs !== previous.createdAtMs ||
|
||||
page.nextCursor.runId !== previous.runId
|
||||
) {
|
||||
throw new Error(
|
||||
'Legacy Shadow terminal source returned an invalid cursor',
|
||||
);
|
||||
}
|
||||
} else if (page.nextCursor !== undefined) {
|
||||
throw new Error('Completed Legacy Shadow terminal page returned a cursor');
|
||||
}
|
||||
}
|
||||
|
||||
function permille(numerator: number, denominator: number): number {
|
||||
return Math.floor((numerator * 1_000) / denominator);
|
||||
}
|
||||
|
||||
/**
|
||||
* Explicit, timer-free audit for a closed Shadow cohort. The report deliberately
|
||||
* does not claim Legacy-to-Shadow capture coverage because RunningInstances have
|
||||
* no trustworthy execution-origin field in the 2.x schema.
|
||||
*/
|
||||
export class LegacyShadowTerminalDifferenceAuditor {
|
||||
constructor(private readonly source: LegacyShadowTerminalDifferenceSource) {}
|
||||
|
||||
async run(
|
||||
options: LegacyShadowTerminalAuditorOptions,
|
||||
): Promise<LegacyShadowTerminalDifferenceReport> {
|
||||
if (!['edge', 'standalone'].includes(options.profile)) {
|
||||
throw new RangeError('profile must be edge or standalone');
|
||||
}
|
||||
const projectId = options.projectId ?? 'default';
|
||||
if (projectId.length < 1 || projectId.length > 128) {
|
||||
throw new RangeError('projectId length is invalid');
|
||||
}
|
||||
const origins = [...new Set(options.origins)];
|
||||
if (origins.length < 1 || origins.length > MAX_CONFIGURED_ORIGINS) {
|
||||
throw new RangeError('origin count is outside its audit budget');
|
||||
}
|
||||
if (origins.some((origin) => !EXECUTION_ORIGIN_SET.has(origin))) {
|
||||
throw new RangeError('terminal audit origin is invalid');
|
||||
}
|
||||
assertSafeInteger('windowStartMs', options.windowStartMs);
|
||||
assertSafeInteger('windowEndMs', options.windowEndMs);
|
||||
if (options.windowStartMs >= options.windowEndMs) {
|
||||
throw new RangeError('terminal audit window must be non-empty');
|
||||
}
|
||||
const observedAtMs =
|
||||
options.observedAtMs ?? options.clock?.now() ?? Date.now();
|
||||
const minimumSettlingAgeMs = options.minimumSettlingAgeMs ?? 5 * 60_000;
|
||||
const correlationToleranceMs = options.correlationToleranceMs ?? 2_000;
|
||||
assertSafeInteger('observedAtMs', observedAtMs);
|
||||
assertSafeInteger('minimumSettlingAgeMs', minimumSettlingAgeMs);
|
||||
assertSafeInteger('correlationToleranceMs', correlationToleranceMs);
|
||||
if (correlationToleranceMs > MAX_CORRELATION_TOLERANCE_MS) {
|
||||
throw new RangeError('correlationToleranceMs exceeds its hard limit');
|
||||
}
|
||||
const budget = BUDGETS[options.profile];
|
||||
if (budget.pageSize > MAX_LEGACY_SHADOW_TERMINAL_PAGE_SIZE) {
|
||||
throw new RangeError('terminal audit Profile exceeds the source limit');
|
||||
}
|
||||
|
||||
const counts = emptyCounts();
|
||||
const dimensions = emptyDimensions();
|
||||
const originSummaries = new Map(
|
||||
origins.map((origin) => [origin, originSummary(origin)]),
|
||||
);
|
||||
const allowedOrigins = new Set(origins);
|
||||
let cursor: LegacyShadowTerminalCursor | undefined;
|
||||
let pages = 0;
|
||||
let scanned = 0;
|
||||
let fullyComparable = 0;
|
||||
let evidenceOverflowPages = 0;
|
||||
let remaining = false;
|
||||
let stopReason: LegacyShadowTerminalAuditStopReason = 'complete';
|
||||
|
||||
while (pages < budget.maxPages) {
|
||||
const page = await this.source.listCandidates({
|
||||
projectId,
|
||||
origins,
|
||||
windowStartMs: options.windowStartMs,
|
||||
windowEndMs: options.windowEndMs,
|
||||
observedAtMs,
|
||||
correlationToleranceMs,
|
||||
...(cursor === undefined ? {} : { cursor }),
|
||||
limit: budget.pageSize,
|
||||
});
|
||||
pages += 1;
|
||||
validatePage(
|
||||
page,
|
||||
cursor,
|
||||
budget.pageSize,
|
||||
allowedOrigins,
|
||||
options.windowStartMs,
|
||||
options.windowEndMs,
|
||||
);
|
||||
if (page.evidenceTruncated) evidenceOverflowPages += 1;
|
||||
|
||||
for (const candidate of page.candidates) {
|
||||
const result = classify(
|
||||
candidate,
|
||||
page.evidence,
|
||||
page.evidenceTruncated,
|
||||
correlationToleranceMs,
|
||||
dimensions,
|
||||
);
|
||||
counts[result.category] += 1;
|
||||
const perOrigin = originSummaries.get(candidate.origin)!;
|
||||
perOrigin.scanned += 1;
|
||||
perOrigin[result.category] += 1;
|
||||
scanned += 1;
|
||||
if (result.fullyComparable) fullyComparable += 1;
|
||||
}
|
||||
|
||||
if (!page.truncated) break;
|
||||
if (
|
||||
page.nextCursor === undefined ||
|
||||
sameCursor(cursor, page.nextCursor)
|
||||
) {
|
||||
remaining = true;
|
||||
stopReason = 'cursor_stalled';
|
||||
break;
|
||||
}
|
||||
cursor = page.nextCursor;
|
||||
if (pages === budget.maxPages) {
|
||||
remaining = true;
|
||||
stopReason = 'page_limit';
|
||||
}
|
||||
}
|
||||
|
||||
const windowClosed =
|
||||
options.windowEndMs <= observedAtMs - minimumSettlingAgeMs;
|
||||
const evidenceComplete = evidenceOverflowPages === 0;
|
||||
const assessment: LegacyShadowTerminalAuditAssessment = !windowClosed
|
||||
? 'window_open'
|
||||
: remaining || !evidenceComplete
|
||||
? 'incomplete'
|
||||
: scanned === 0
|
||||
? 'empty'
|
||||
: counts.matched === scanned
|
||||
? 'matched'
|
||||
: 'differences_found';
|
||||
const ratiosAvailable =
|
||||
windowClosed && !remaining && evidenceComplete && scanned > 0;
|
||||
|
||||
return {
|
||||
schema: 'qinglong/legacy-shadow-terminal-difference-report@v1',
|
||||
profile: options.profile,
|
||||
observedAtMs,
|
||||
window: {
|
||||
basis: 'shadow_run_created_at',
|
||||
startInclusiveMs: options.windowStartMs,
|
||||
endExclusiveMs: options.windowEndMs,
|
||||
minimumSettlingAgeMs,
|
||||
closed: windowClosed,
|
||||
},
|
||||
coverage: {
|
||||
direction: 'shadow_to_legacy',
|
||||
cohort: 'legacy_owned_shadow_runs',
|
||||
legacyWithoutShadow: 'not_measured',
|
||||
},
|
||||
budget: {
|
||||
pageSize: budget.pageSize,
|
||||
maxPages: budget.maxPages,
|
||||
maxCandidates: budget.pageSize * budget.maxPages,
|
||||
},
|
||||
pages,
|
||||
scanned,
|
||||
stopReason,
|
||||
remaining,
|
||||
evidenceComplete,
|
||||
evidenceOverflowPages,
|
||||
assessment,
|
||||
counts,
|
||||
byOrigin: [...originSummaries.values()],
|
||||
dimensions,
|
||||
...(ratiosAvailable
|
||||
? {
|
||||
terminalAgreementPermille: permille(counts.matched, scanned),
|
||||
fullyComparablePermille: permille(fullyComparable, scanned),
|
||||
}
|
||||
: {}),
|
||||
};
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user