From 676fccf4e968a58e82a5881c87ac6dd9faa38fd4 Mon Sep 17 00:00:00 2001 From: Imron Reviady Date: Sun, 4 Oct 2026 14:36:00 +0700 Subject: [PATCH] Add liveness sessions for API contract 2.0.0 createLivenessSession (named in each language's style) starts a session and returns its ID, the challenges to show in order and the expiry. completeLivenessSession submits the frames with mirrored and returns isLive, the steps and, when the session passed, the liveness token used for enrolment. LIVENESS_SESSION_INVALID surfaces as the typed API error. Completion is retried only on 429: any other answer, 503 included, means the session was already used up, so a retry could only fail. BREAKING: activeLiveness results no longer carry the token fields, because the API stopped returning them. This is a new major version, pinned to contract 2.0.0, with migration notes in the CHANGELOG. --- CHANGELOG.md | 53 ++ CONTRACT_VERSION | 2 +- README.md | 52 +- ...{openapi-1.0.0.json => openapi-2.0.0.json} | 512 ++++++++++++++++-- package-lock.json | 4 +- package.json | 2 +- src/client.ts | 73 ++- src/index.ts | 8 +- src/types.ts | 39 +- test/contract.test.js | 3 + test/faces.test.js | 89 ++- test/retry.test.js | 33 ++ 12 files changed, 785 insertions(+), 85 deletions(-) create mode 100644 CHANGELOG.md rename contract/{openapi-1.0.0.json => openapi-2.0.0.json} (91%) diff --git a/CHANGELOG.md b/CHANGELOG.md new file mode 100644 index 0000000..de21d01 --- /dev/null +++ b/CHANGELOG.md @@ -0,0 +1,53 @@ +# Changelog + +All notable changes to this SDK are documented here. The format is based on +[Keep a Changelog](https://keepachangelog.com/en/1.1.0/), and this project +follows [Semantic Versioning](https://semver.org/). + +## [1.0.0] - Unreleased + +Validated against API contract 2.0.0. + +### BREAKING + +- `faces.activeLiveness` no longer returns a token: `livenessToken` and + `livenessTokenExpiresAt` are removed from `ActiveLivenessResult`, because the + API no longer issues them from the stateless check. + +### Added + +- `faces.createLivenessSession(collectionId)` returns a `LivenessSession` + (`sessionId`, ordered `challenges`, `expiresAt`). +- `faces.completeLivenessSession(collectionId, sessionId, frames, { mirrored })` + returns a `LivenessSessionResult`: the active-liveness fields, `steps`, and + `livenessToken` / `livenessTokenExpiresAt` when the session passed. +- A completion is retried only on 429, never on a network error or 5xx: a 503 + `SERVICE_BUSY` comes after the session was used up, so it is thrown at once + and the caller creates a new session. +- `LIVENESS_SESSION_INVALID` (422) surfaces as a `LiveXFaceApiError`. +- Exported types `LivenessChallengeType`, `LivenessChallenge`, + `LivenessSession`, `LivenessStep`, `CompleteLivenessSessionOptions` and + `LivenessSessionResult`. + +### Migration + +`activeLiveness` no longer returns a token; create a session, show its +challenges, complete it with the frames: + +```typescript +// Before (0.x) +const check = await client.faces.activeLiveness(col, frames) +await client.faces.register(col, { externalId, image, livenessToken: check.livenessToken }) + +// After (1.0) +const session = await client.faces.createLivenessSession(col) +// show session.challenges to the person, in order, and capture frames +const result = await client.faces.completeLivenessSession(col, session.sessionId, frames, { mirrored: false }) +if (result.livenessToken) { + await client.faces.register(col, { externalId, image, livenessToken: result.livenessToken }) +} +``` + +## [0.1.0] + +- Initial release, validated against API contract 1.0.0. diff --git a/CONTRACT_VERSION b/CONTRACT_VERSION index 3eefcb9..227cea2 100644 --- a/CONTRACT_VERSION +++ b/CONTRACT_VERSION @@ -1 +1 @@ -1.0.0 +2.0.0 diff --git a/README.md b/README.md index a69e756..be31f8b 100644 --- a/README.md +++ b/README.md @@ -17,9 +17,9 @@ npm install livexface yarn add livexface ``` -Validated against API contract 1.0.0 (`/openapi.json` `info.version`), exported as `CONTRACT_VERSION`. +Validated against API contract 2.0.0 (`/openapi.json` `info.version`), exported as `CONTRACT_VERSION`. `npm test` calls every SDK method and checks its HTTP method, path and required fields against the pinned -`contract/openapi-1.0.0.json`; to move to a new contract, copy the release asset `openapi-.json` into +`contract/openapi-2.0.0.json`; to move to a new contract, copy the release asset `openapi-.json` into `contract/`, then update the `CONTRACT_VERSION` file and the constant in `src/index.ts`. ## Quick Start @@ -64,28 +64,52 @@ const liveness = await client.faces.liveness('collection-id', { console.log('Live:', liveness.isLive, 'Score:', liveness.livenessScore) ``` -## Active Liveness and Enrolment +## Liveness Sessions and Enrolment -A collection can require liveness at enrolment. Run an active liveness check -on a short burst of frames (5 to 50, JPEG or PNG) showing a blink and a head -turn; when it passes, the result carries a single-use `livenessToken` (valid -for 5 minutes, bound to that collection) to pass when registering. +A collection can require liveness at enrolment. The enrolment token comes only +from a completed liveness session: the server picks the steps (one blink and +one or two head turns, in random order), the person performs them on camera, +and you submit the frames once, within 60 seconds. `turn_left` and +`turn_right` mean the person's own left and right. ```typescript -const frames = fs.readdirSync('./frames').map((f) => fs.readFileSync(`./frames/${f}`)) +const prompts = { blink: 'Blink', turn_left: 'Turn your head to your left', turn_right: 'Turn your head to your right' } -const check = await client.faces.activeLiveness('collection-id', frames) -console.log('Live:', check.isLive, 'Blink:', check.challenges.blink.passed) +// 1. Create a session and show its challenges, in order +const session = await client.faces.createLivenessSession('collection-id') +for (const step of session.challenges) showPrompt(prompts[step.type]) -if (check.isLive && check.livenessToken) { +// 2. Capture 5 to 50 frames (JPEG or PNG) while the person performs them +const frames: Buffer[] = await captureFrames() + +// 3. Complete it; mirrored: true when the frames are flipped like a selfie preview +const result = await client.faces.completeLivenessSession('collection-id', session.sessionId, frames, { + mirrored: false, +}) +console.log('Live:', result.isLive, result.steps.map((s) => `${s.type}: ${s.passed}`)) + +// 4. Enrol with the single-use token (valid 5 minutes, bound to this collection) +if (result.isLive && result.livenessToken) { const face = await client.faces.register('collection-id', { externalId: 'user_123', image: frames[0], - livenessToken: check.livenessToken, + livenessToken: result.livenessToken, }) } ``` +A session is used up by any submission except one with fewer than 5 frames +(`IMAGE_REQUIRED`, 400), so a completion carries no idempotency key. With +`maxRetries` on, it is retried only on `429` (rejected before the session is +touched), never on network errors or `5xx`. Session errors: +`LIVENESS_SESSION_INVALID` (422, unknown, expired, already submitted, or +created for another collection) and `SERVICE_BUSY` (503, the engine was busy +after the session was used up; thrown at once, not retried). After either, +create a new session. + +`activeLiveness(collectionId, frames)` still returns a verdict (`isLive`, +`overallScore`, `challenges`), but no token. + The batch methods accept `livenessToken` per item as well. Enrolment errors: `LIVENESS_TOKEN_REQUIRED` (400, the collection needs a token), `LIVENESS_TOKEN_INVALID` (422, unknown, expired or already used) and @@ -164,7 +188,9 @@ first). `429` and `503` are retried after the `Retry-After` delay (capped by `maxRetryDelay`), or after an exponential backoff with jitter. Network errors and other `5xx` are retried only for GET, PATCH and DELETE and for requests with an idempotency key; a plain POST such as `identify` is not. Other `4xx` -responses are never retried. Enrolment and batch calls get a generated key when +responses are never retried. `completeLivenessSession` is the exception to +the `503` rule: see [Liveness Sessions](#liveness-sessions-and-enrolment). +Enrolment and batch calls get a generated key when you pass none, and every attempt of one call sends the same key. ```typescript diff --git a/contract/openapi-1.0.0.json b/contract/openapi-2.0.0.json similarity index 91% rename from contract/openapi-1.0.0.json rename to contract/openapi-2.0.0.json index 3743d0d..7cdb4e6 100644 --- a/contract/openapi-1.0.0.json +++ b/contract/openapi-2.0.0.json @@ -1,37 +1,6 @@ { "components": { "schemas": { - "github_com_livexface_backend_internal_domain_entity.ActiveLivenessResult": { - "properties": { - "challenges": { - "additionalProperties": { - "additionalProperties": true, - "type": "object" - }, - "type": "object" - }, - "framesAnalyzed": { - "type": "integer" - }, - "framesWithFace": { - "type": "integer" - }, - "isLive": { - "type": "boolean" - }, - "livenessToken": { - "description": "Set only when the check passed and the token could be stored.", - "type": "string" - }, - "livenessTokenExpiresAt": { - "type": "string" - }, - "overallScore": { - "type": "number" - } - }, - "type": "object" - }, "github_com_livexface_backend_internal_domain_entity.BatchJobResult": { "properties": { "error": { @@ -88,6 +57,17 @@ }, "type": "object" }, + "github_com_livexface_backend_internal_domain_entity.LivenessStep": { + "properties": { + "passed": { + "type": "boolean" + }, + "type": { + "type": "string" + } + }, + "type": "object" + }, "github_com_livexface_backend_internal_domain_entity.PlanFeature": { "properties": { "included": { @@ -334,6 +314,30 @@ }, "type": "object" }, + "internal_delivery_http_handler.activeLivenessResponse": { + "properties": { + "challenges": { + "additionalProperties": { + "additionalProperties": true, + "type": "object" + }, + "type": "object" + }, + "framesAnalyzed": { + "type": "integer" + }, + "framesWithFace": { + "type": "integer" + }, + "isLive": { + "type": "boolean" + }, + "overallScore": { + "type": "number" + } + }, + "type": "object" + }, "internal_delivery_http_handler.apiKeyDTO": { "properties": { "allowedIps": { @@ -1291,6 +1295,15 @@ ], "type": "object" }, + "internal_delivery_http_handler.livenessChallengeDTO": { + "properties": { + "type": { + "example": "turn_left", + "type": "string" + } + }, + "type": "object" + }, "internal_delivery_http_handler.livenessResponse": { "properties": { "faceCount": { @@ -1308,6 +1321,60 @@ }, "type": "object" }, + "internal_delivery_http_handler.livenessSessionResponse": { + "properties": { + "challenges": { + "items": { + "$ref": "#/components/schemas/internal_delivery_http_handler.livenessChallengeDTO" + }, + "type": "array" + }, + "expiresAt": { + "type": "string" + }, + "sessionId": { + "example": "lvs_3q2-…", + "type": "string" + } + }, + "type": "object" + }, + "internal_delivery_http_handler.livenessSessionResultResponse": { + "properties": { + "challenges": { + "additionalProperties": { + "additionalProperties": true, + "type": "object" + }, + "type": "object" + }, + "framesAnalyzed": { + "type": "integer" + }, + "framesWithFace": { + "type": "integer" + }, + "isLive": { + "type": "boolean" + }, + "livenessToken": { + "type": "string" + }, + "livenessTokenExpiresAt": { + "type": "string" + }, + "overallScore": { + "type": "number" + }, + "steps": { + "items": { + "$ref": "#/components/schemas/github_com_livexface_backend_internal_domain_entity.LivenessStep" + }, + "type": "array" + } + }, + "type": "object" + }, "internal_delivery_http_handler.loginRequest": { "properties": { "email": { @@ -1964,13 +2031,13 @@ }, "termsOfService": "http://swagger.io/terms/", "title": "LiveXFace — Face Recognition API as a Service", - "version": "1.0.0" + "version": "2.0.0" }, "openapi": "3.0.3", "paths": { "/collections/{collection_id}/active-liveness": { "post": { - "description": "Judge a sequence of frames (blink, head turn and the passive model). Send the frames in order as frame_0, frame_1, … up to frame_49; at least 5 are required. A passed check returns a single-use livenessToken, valid for 5 minutes and bound to this collection, for enrolling into a collection that requires liveness.", + "description": "Judge a sequence of frames (blink, head turn and the passive model). Send the frames in order as frame_0, frame_1, … up to frame_49; at least 5 are required. This stateless check returns a verdict only and issues no liveness token; to enrol into a collection that requires liveness, complete a liveness session instead.", "parameters": [ { "description": "Collection ID (UUID)", @@ -2014,7 +2081,7 @@ { "properties": { "data": { - "$ref": "#/components/schemas/github_com_livexface_backend_internal_domain_entity.ActiveLivenessResult" + "$ref": "#/components/schemas/internal_delivery_http_handler.activeLivenessResponse" } }, "type": "object" @@ -2163,7 +2230,7 @@ "APIKeyAuth": [] } ], - "summary": "Active liveness check", + "summary": "Active liveness check (verdict only)", "tags": [ "Face Recognition" ] @@ -4660,6 +4727,381 @@ ] } }, + "/collections/{collection_id}/liveness-sessions": { + "post": { + "description": "Start a liveness session: the server picks the steps the person must perform, in order (one blink and one or two head turns, turn_left and turn_right meaning the person's own left and right). Show them to the person, capture frames while they perform them, and submit the frames to the session before expiresAt (60 seconds by default). The session is bound to this collection.", + "parameters": [ + { + "description": "Collection ID (UUID)", + "in": "path", + "name": "collection_id", + "required": true, + "schema": { + "type": "string" + } + } + ], + "responses": { + "201": { + "content": { + "application/json": { + "schema": { + "allOf": [ + { + "$ref": "#/components/schemas/internal_delivery_http_handler.APIResponse" + }, + { + "properties": { + "data": { + "$ref": "#/components/schemas/internal_delivery_http_handler.livenessSessionResponse" + } + }, + "type": "object" + } + ] + } + } + }, + "description": "Created" + }, + "401": { + "content": { + "application/json": { + "schema": { + "allOf": [ + { + "$ref": "#/components/schemas/internal_delivery_http_handler.APIResponse" + }, + { + "properties": { + "error": { + "$ref": "#/components/schemas/internal_delivery_http_handler.APIError" + } + }, + "type": "object" + } + ] + } + } + }, + "description": "INVALID_API_KEY" + }, + "403": { + "content": { + "application/json": { + "schema": { + "allOf": [ + { + "$ref": "#/components/schemas/internal_delivery_http_handler.APIResponse" + }, + { + "properties": { + "error": { + "$ref": "#/components/schemas/internal_delivery_http_handler.APIError" + } + }, + "type": "object" + } + ] + } + } + }, + "description": "INSUFFICIENT_SCOPE, API_KEY_INACTIVE, API_KEY_EXPIRED, IP_NOT_ALLOWED or COLLECTION_NOT_ALLOWED" + }, + "404": { + "content": { + "application/json": { + "schema": { + "allOf": [ + { + "$ref": "#/components/schemas/internal_delivery_http_handler.APIResponse" + }, + { + "properties": { + "error": { + "$ref": "#/components/schemas/internal_delivery_http_handler.APIError" + } + }, + "type": "object" + } + ] + } + } + }, + "description": "COLLECTION_NOT_FOUND" + }, + "429": { + "content": { + "application/json": { + "schema": { + "allOf": [ + { + "$ref": "#/components/schemas/internal_delivery_http_handler.APIResponse" + }, + { + "properties": { + "error": { + "$ref": "#/components/schemas/internal_delivery_http_handler.APIError" + } + }, + "type": "object" + } + ] + } + } + }, + "description": "RATE_LIMIT_EXCEEDED or QUOTA_EXCEEDED" + } + }, + "security": [ + { + "APIKeyAuth": [] + } + ], + "summary": "Create a liveness session", + "tags": [ + "Face Recognition" + ] + } + }, + "/collections/{collection_id}/liveness-sessions/{session_id}": { + "post": { + "description": "Submit the frames for a liveness session, once, before it expires. Every step must appear in the frames in the order given, and the blink and passive rules of the active check must hold. A pass returns a single-use livenessToken, valid for 5 minutes and bound to this collection, for enrolling with liveness_token. The session is used up by any submission except one with fewer than 5 frames.", + "parameters": [ + { + "description": "Collection ID (UUID)", + "in": "path", + "name": "collection_id", + "required": true, + "schema": { + "type": "string" + } + }, + { + "description": "Session ID from creating the session", + "in": "path", + "name": "session_id", + "required": true, + "schema": { + "type": "string" + } + } + ], + "requestBody": { + "content": { + "multipart/form-data": { + "schema": { + "properties": { + "frame_0": { + "description": "First frame; continue with frame_1 … frame_49 (at least 5 frames)", + "format": "binary", + "type": "string", + "x-formData-name": "frame_0" + }, + "mirrored": { + "default": false, + "description": "true when the frames are horizontally mirrored, as a selfie preview is", + "type": "boolean", + "x-formData-name": "mirrored" + } + }, + "required": [ + "frame_0" + ], + "type": "object" + } + } + } + }, + "responses": { + "200": { + "content": { + "application/json": { + "schema": { + "allOf": [ + { + "$ref": "#/components/schemas/internal_delivery_http_handler.APIResponse" + }, + { + "properties": { + "data": { + "$ref": "#/components/schemas/internal_delivery_http_handler.livenessSessionResultResponse" + } + }, + "type": "object" + } + ] + } + } + }, + "description": "OK" + }, + "400": { + "content": { + "application/json": { + "schema": { + "allOf": [ + { + "$ref": "#/components/schemas/internal_delivery_http_handler.APIResponse" + }, + { + "properties": { + "error": { + "$ref": "#/components/schemas/internal_delivery_http_handler.APIError" + } + }, + "type": "object" + } + ] + } + } + }, + "description": "IMAGE_REQUIRED: fewer than 5 readable frames (the session is kept); BAD_REQUEST: mirrored is not true or false" + }, + "401": { + "content": { + "application/json": { + "schema": { + "allOf": [ + { + "$ref": "#/components/schemas/internal_delivery_http_handler.APIResponse" + }, + { + "properties": { + "error": { + "$ref": "#/components/schemas/internal_delivery_http_handler.APIError" + } + }, + "type": "object" + } + ] + } + } + }, + "description": "INVALID_API_KEY" + }, + "403": { + "content": { + "application/json": { + "schema": { + "allOf": [ + { + "$ref": "#/components/schemas/internal_delivery_http_handler.APIResponse" + }, + { + "properties": { + "error": { + "$ref": "#/components/schemas/internal_delivery_http_handler.APIError" + } + }, + "type": "object" + } + ] + } + } + }, + "description": "INSUFFICIENT_SCOPE, API_KEY_INACTIVE, API_KEY_EXPIRED, IP_NOT_ALLOWED or COLLECTION_NOT_ALLOWED" + }, + "404": { + "content": { + "application/json": { + "schema": { + "allOf": [ + { + "$ref": "#/components/schemas/internal_delivery_http_handler.APIResponse" + }, + { + "properties": { + "error": { + "$ref": "#/components/schemas/internal_delivery_http_handler.APIError" + } + }, + "type": "object" + } + ] + } + } + }, + "description": "COLLECTION_NOT_FOUND" + }, + "422": { + "content": { + "application/json": { + "schema": { + "allOf": [ + { + "$ref": "#/components/schemas/internal_delivery_http_handler.APIResponse" + }, + { + "properties": { + "error": { + "$ref": "#/components/schemas/internal_delivery_http_handler.APIError" + } + }, + "type": "object" + } + ] + } + } + }, + "description": "LIVENESS_SESSION_INVALID: unknown, expired, already submitted, or bound to another organization or collection" + }, + "429": { + "content": { + "application/json": { + "schema": { + "allOf": [ + { + "$ref": "#/components/schemas/internal_delivery_http_handler.APIResponse" + }, + { + "properties": { + "error": { + "$ref": "#/components/schemas/internal_delivery_http_handler.APIError" + } + }, + "type": "object" + } + ] + } + } + }, + "description": "RATE_LIMIT_EXCEEDED or QUOTA_EXCEEDED" + }, + "503": { + "content": { + "application/json": { + "schema": { + "allOf": [ + { + "$ref": "#/components/schemas/internal_delivery_http_handler.APIResponse" + }, + { + "properties": { + "error": { + "$ref": "#/components/schemas/internal_delivery_http_handler.APIError" + } + }, + "type": "object" + } + ] + } + } + }, + "description": "SERVICE_BUSY: the recognition engine is saturated; create a new session and retry" + } + }, + "security": [ + { + "APIKeyAuth": [] + } + ], + "summary": "Complete a liveness session", + "tags": [ + "Face Recognition" + ] + } + }, "/collections/{collection_id}/verify": { "post": { "description": "Compare an uploaded image against a stored face (by face_id) or a second uploaded image (reference_image). Returns match/no-match with confidence score.", diff --git a/package-lock.json b/package-lock.json index 3a9b16d..a662a12 100644 --- a/package-lock.json +++ b/package-lock.json @@ -1,12 +1,12 @@ { "name": "livexface", - "version": "0.1.0", + "version": "1.0.0", "lockfileVersion": 3, "requires": true, "packages": { "": { "name": "livexface", - "version": "0.1.0", + "version": "1.0.0", "license": "MIT", "devDependencies": { "@types/node": "^22.0.0", diff --git a/package.json b/package.json index 97b06e1..9ab5309 100644 --- a/package.json +++ b/package.json @@ -1,6 +1,6 @@ { "name": "livexface", - "version": "0.1.0", + "version": "1.0.0", "description": "Official TypeScript/JavaScript SDK for LiveXFace — Face Recognition as a Service", "main": "dist/index.js", "types": "dist/index.d.ts", diff --git a/src/client.ts b/src/client.ts index 165f80f..9a740d2 100644 --- a/src/client.ts +++ b/src/client.ts @@ -17,6 +17,9 @@ import type { LivenessInput, LivenessResult, ActiveLivenessResult, + LivenessSession, + LivenessSessionResult, + CompleteLivenessSessionOptions, BatchRegisterItem, BatchResponse, BatchDeleteResponse, @@ -131,7 +134,7 @@ export class LiveXFace { } catch (err) { const delay = attempt < this.maxRetries - ? this._retryDelay(err, safe, attempt) + ? this._retryDelay(err, safe, attempt, options.retryBusy ?? true) : undefined; if (delay === undefined) throw err; await this._sleep(delay); @@ -144,11 +147,12 @@ export class LiveXFace { err: unknown, safe: boolean, attempt: number, + retryBusy: boolean, ): number | undefined { let retryAfter: number | undefined; if (err instanceof LiveXFaceApiError) { const status = err.statusCode; - if (status === 429 || status === 503) retryAfter = err.retryAfter; + if (status === 429 || (status === 503 && retryBusy)) retryAfter = err.retryAfter; else if (status < 500 || !safe) return undefined; } else if (!(err instanceof LiveXFaceNetworkError) || !safe) { return undefined; @@ -256,6 +260,8 @@ type RequestOptions = { json?: unknown; formData?: FormData; idempotencyKey?: string; + /** False when a 503 means the request was consumed, so a retry cannot succeed. */ + retryBusy?: boolean; }; /** @@ -271,6 +277,17 @@ function toBatchEntry(item: BatchRegisterItem): Record { return entry; } +/** Frames as multipart files `frame_0`, `frame_1`, ... in order. */ +async function framesForm( + frames: Array, +): Promise { + const form = new FormData(); + for (let i = 0; i < frames.length; i++) { + form.append(`frame_${i}`, await toBlob(frames[i]), `frame_${i}.jpg`); + } + return form; +} + // ─── Faces Resource ─────────────────────────────────────────────────────────── export class FacesResource { @@ -409,23 +426,57 @@ export class FacesResource { /** * Active liveness — analyse a short burst of frames (5 to 50, JPEG/PNG) for - * a blink, a head turn and passive anti-spoofing. When the check passes the - * result carries a single-use `livenessToken`, valid for 5 minutes and bound - * to this collection, that {@link register} and the batch methods accept - * for collections that require liveness at enrolment. + * a blink, a head turn and passive anti-spoofing. A verdict only: it issues + * no liveness token. To enrol into a collection that requires liveness, use + * {@link createLivenessSession} and {@link completeLivenessSession}. */ async activeLiveness( collectionId: string, frames: Array, ): Promise { - const form = new FormData(); - for (let i = 0; i < frames.length; i++) { - form.append(`frame_${i}`, await toBlob(frames[i]), `frame_${i}.jpg`); - } return this.client._request( "POST", `/collections/${collectionId}/active-liveness`, - { formData: form }, + { formData: await framesForm(frames) }, + ); + } + + /** + * Start a liveness session. Show its `challenges` to the person in order, + * capture frames while they perform them, and pass the frames to + * {@link completeLivenessSession} before `expiresAt`. + */ + async createLivenessSession(collectionId: string): Promise { + return this.client._request( + "POST", + `/collections/${collectionId}/liveness-sessions`, + ); + } + + /** + * Submit the frames (5 to 50, JPEG/PNG) for a liveness session. A pass + * carries a single-use `livenessToken`, valid for 5 minutes and bound to + * this collection, for {@link register} and the batch methods. + * + * The session is used up by any submission except one with fewer than 5 + * frames, so it carries no idempotency key and is retried only on 429 + * (rejected before the session is touched), never on a network error or + * 5xx. A 503 `SERVICE_BUSY` arrives after the session was used up, so it is + * thrown at once: after it or `LIVENESS_SESSION_INVALID` (422), create a new + * session. + */ + async completeLivenessSession( + collectionId: string, + sessionId: string, + frames: Array, + options: CompleteLivenessSessionOptions = {}, + ): Promise { + const form = await framesForm(frames); + form.append("mirrored", String(options.mirrored ?? false)); + return this.client._request( + "POST", + `/collections/${collectionId}/liveness-sessions/${sessionId}`, + { formData: form, retryBusy: false }, ); } diff --git a/src/index.ts b/src/index.ts index 8e80bb6..3f70f2f 100644 --- a/src/index.ts +++ b/src/index.ts @@ -2,7 +2,7 @@ * The API contract (`info.version` of `/openapi.json`) this SDK release is * validated against. Kept equal to the CONTRACT_VERSION file by the tests. */ -export const CONTRACT_VERSION = '1.0.0' +export const CONTRACT_VERSION = '2.0.0' export { LiveXFace, FacesResource, generateIdempotencyKey } from './client' export { LiveXFaceApiError, LiveXFaceNetworkError } from './error' @@ -27,6 +27,12 @@ export type { ActiveLivenessChallenge, ActiveLivenessChallenges, ActiveLivenessResult, + LivenessChallengeType, + LivenessChallenge, + LivenessSession, + LivenessStep, + CompleteLivenessSessionOptions, + LivenessSessionResult, BatchRegisterItem, BatchFaceResult, BatchResponse, diff --git a/src/types.ts b/src/types.ts index 400011f..9c68971 100644 --- a/src/types.ts +++ b/src/types.ts @@ -39,7 +39,7 @@ export interface RegisterFaceInput { metadata?: Record filename?: string /** - * Single-use token from {@link ActiveLivenessResult}. Required when the + * Single-use token from {@link LivenessSessionResult}. Required when the * collection requires liveness at enrolment. */ livenessToken?: string @@ -171,7 +171,40 @@ export interface ActiveLivenessResult { framesAnalyzed: number framesWithFace: number challenges: ActiveLivenessChallenges - /** Single-use enrolment token, present only when the check passed */ +} + +// ─── Liveness Sessions ──────────────────────────────────────────────────────── + +/** A step of a liveness session. Left and right are the person's own. */ +export type LivenessChallengeType = 'blink' | 'turn_left' | 'turn_right' + +export interface LivenessChallenge { + type: LivenessChallengeType +} + +/** A liveness session: the steps to perform, in order, before `expiresAt`. */ +export interface LivenessSession { + sessionId: string + challenges: LivenessChallenge[] + /** RFC 3339; 60 seconds after creation by default */ + expiresAt: string +} + +export interface LivenessStep { + type: LivenessChallengeType + passed: boolean +} + +export interface CompleteLivenessSessionOptions { + /** True when the frames are horizontally mirrored, as a selfie preview is. Defaults to false. */ + mirrored?: boolean +} + +/** Result of completing a liveness session. */ +export interface LivenessSessionResult extends ActiveLivenessResult { + /** The session's challenges in order, each marked passed or not */ + steps: LivenessStep[] + /** Single-use enrolment token, present only when the session passed */ livenessToken?: string /** RFC 3339 expiry of `livenessToken` (5 minutes after issue) */ livenessTokenExpiresAt?: string @@ -185,7 +218,7 @@ export interface BatchRegisterItem { metadata?: Record filename?: string /** - * Single-use token from {@link ActiveLivenessResult}. Required when the + * Single-use token from {@link LivenessSessionResult}. Required when the * collection requires liveness at enrolment. */ livenessToken?: string diff --git a/test/contract.test.js b/test/contract.test.js index eed05f2..313be0f 100644 --- a/test/contract.test.js +++ b/test/contract.test.js @@ -39,6 +39,9 @@ const cases = { identify: (f) => f.identify(col, { image: img(), topK: 3, threshold: 0.5 }), liveness: (f) => f.liveness(col, { image: img() }), activeLiveness: (f) => f.activeLiveness(col, Array.from({ length: 5 }, img)), + createLivenessSession: (f) => f.createLivenessSession(col), + completeLivenessSession: (f) => + f.completeLivenessSession(col, 'lvs_1', Array.from({ length: 5 }, img), { mirrored: true }), compare: (f) => f.compare({ image1: img(), image2: img(), threshold: 0.5 }), batchRegister: (f) => f.batchRegister(col, items, { idempotencyKey: 'k2' }), batchDelete: (f) => f.batchDelete(col, ['face_1', 'face_2']), diff --git a/test/faces.test.js b/test/faces.test.js index d9198b2..476424f 100644 --- a/test/faces.test.js +++ b/test/faces.test.js @@ -31,50 +31,103 @@ const challenges = { passiveAntispoof: { passed: true, available: true, score: 0.97 }, } -test('activeLiveness sends frame_0..frame_n and parses the token', async () => { +const verdict = { overallScore: 0.95, framesAnalyzed: 6, framesWithFace: 6, challenges } + +test('activeLiveness sends frame_0..frame_n and returns a verdict without a token', async () => { + stubFetch(200, { success: true, data: { isLive: true, ...verdict } }) + const frames = Array.from({ length: 6 }, img) + const res = await client.faces.activeLiveness('col_1', frames) + + assert.equal(calls[0].url, 'http://api.test/api/v1/collections/col_1/active-liveness') + assert.equal(calls[0].init.method, 'POST') + const form = calls[0].init.body + assert.deepEqual([...form.keys()], ['frame_0', 'frame_1', 'frame_2', 'frame_3', 'frame_4', 'frame_5']) + assert.equal(res.isLive, true) + assert.equal(res.challenges.blink.blinkCount, 1) + assert.equal('livenessToken' in res, false) + assert.equal('livenessTokenExpiresAt' in res, false) +}) + +test('createLivenessSession posts no body and returns the ordered challenges', async () => { + const session = { + sessionId: 'lvs_abc', + challenges: [{ type: 'turn_left' }, { type: 'blink' }, { type: 'turn_right' }], + expiresAt: '2026-10-03T10:01:00Z', + } + stubFetch(201, { success: true, data: session }) + const res = await client.faces.createLivenessSession('col_1') + + assert.equal(calls[0].url, 'http://api.test/api/v1/collections/col_1/liveness-sessions') + assert.equal(calls[0].init.method, 'POST') + assert.equal(calls[0].init.body, undefined) + assert.equal('Idempotency-Key' in calls[0].init.headers, false) + assert.deepEqual(res, session) + assert.deepEqual(res.challenges.map((c) => c.type), ['turn_left', 'blink', 'turn_right']) +}) + +test('completeLivenessSession sends frames and mirrored, and parses steps and the token', async () => { stubFetch(200, { success: true, data: { isLive: true, - overallScore: 0.95, - framesAnalyzed: 6, - framesWithFace: 6, - challenges, + ...verdict, + steps: [{ type: 'turn_left', passed: true }, { type: 'blink', passed: true }], livenessToken: 'lvt_abc', - livenessTokenExpiresAt: '2026-09-28T10:05:00Z', + livenessTokenExpiresAt: '2026-10-03T10:06:00Z', }, }) - const frames = Array.from({ length: 6 }, img) - const res = await client.faces.activeLiveness('col_1', frames) + const res = await client.faces.completeLivenessSession('col_1', 'lvs_abc', Array.from({ length: 6 }, img), { + mirrored: true, + }) - assert.equal(calls[0].url, 'http://api.test/api/v1/collections/col_1/active-liveness') + assert.equal(calls[0].url, 'http://api.test/api/v1/collections/col_1/liveness-sessions/lvs_abc') assert.equal(calls[0].init.method, 'POST') + assert.equal('Idempotency-Key' in calls[0].init.headers, false) const form = calls[0].init.body - assert.deepEqual([...form.keys()], ['frame_0', 'frame_1', 'frame_2', 'frame_3', 'frame_4', 'frame_5']) + assert.deepEqual( + [...form.keys()], + ['frame_0', 'frame_1', 'frame_2', 'frame_3', 'frame_4', 'frame_5', 'mirrored'], + ) + assert.equal(form.get('mirrored'), 'true') assert.equal(res.isLive, true) + assert.deepEqual(res.steps, [{ type: 'turn_left', passed: true }, { type: 'blink', passed: true }]) assert.equal(res.livenessToken, 'lvt_abc') - assert.equal(res.livenessTokenExpiresAt, '2026-09-28T10:05:00Z') - assert.equal(res.challenges.blink.blinkCount, 1) + assert.equal(res.livenessTokenExpiresAt, '2026-10-03T10:06:00Z') }) -test('a failed activeLiveness check carries no token', async () => { +test('completeLivenessSession sends mirrored=false by default; a failed session carries no token', async () => { stubFetch(200, { success: true, data: { isLive: false, + ...verdict, overallScore: 0.2, - framesAnalyzed: 5, - framesWithFace: 5, - challenges: { ...challenges, blink: { passed: false, available: true } }, + steps: [{ type: 'blink', passed: true }, { type: 'turn_right', passed: false }], }, }) - const res = await client.faces.activeLiveness('col_1', Array.from({ length: 5 }, img)) + const res = await client.faces.completeLivenessSession('col_1', 'lvs_abc', Array.from({ length: 5 }, img)) + assert.equal(calls[0].init.body.get('mirrored'), 'false') assert.equal(res.isLive, false) - assert.equal(res.challenges.blink.passed, false) + assert.equal(res.steps[1].passed, false) assert.equal(res.livenessToken, undefined) assert.equal(res.livenessTokenExpiresAt, undefined) }) +test('completeLivenessSession surfaces LIVENESS_SESSION_INVALID as a typed error', async () => { + stubFetch(422, { + success: false, + requestId: 'req_9', + error: { code: 'LIVENESS_SESSION_INVALID', message: 'liveness session is invalid or expired' }, + }) + await assert.rejects(client.faces.completeLivenessSession('col_1', 'lvs_used', Array.from({ length: 5 }, img)), (err) => { + assert.ok(err instanceof LiveXFaceApiError) + assert.equal(err.code, 'LIVENESS_SESSION_INVALID') + assert.equal(err.statusCode, 422) + assert.equal(err.requestId, 'req_9') + return true + }) +}) + test('activeLiveness surfaces IMAGE_REQUIRED', async () => { stubFetch(400, { success: false, error: { code: 'IMAGE_REQUIRED', message: 'at least 5 frames' } }) await assert.rejects(client.faces.activeLiveness('col_1', [img()]), (err) => { diff --git a/test/retry.test.js b/test/retry.test.js index 236caca..1f42360 100644 --- a/test/retry.test.js +++ b/test/retry.test.js @@ -183,3 +183,36 @@ test('a GET is retried on a network error', async () => { assert.deepEqual(res, face) assert.equal(requests.length, 2) }) + +test('a liveness session completion is not retried on a dropped connection', async () => { + handlers = [drop, reply(200, { success: true, data: { isLive: true, steps: [] } })] + const client = makeClient({ maxRetries: 3 }) + const frames = Array.from({ length: 5 }, img) + await assert.rejects(client.faces.completeLivenessSession('col_1', 'lvs_1', frames), LiveXFaceNetworkError) + assert.equal(requests.length, 1) + assert.equal(requests[0].url, '/api/v1/collections/col_1/liveness-sessions/lvs_1') + assert.equal('idempotency-key' in requests[0].headers, false) + assert.deepEqual(client.slept, []) +}) + +test('a liveness session completion surfaces 503 at once but is retried after 429', async () => { + const client = makeClient({ maxRetries: 3 }) + const complete = () => client.faces.completeLivenessSession('col_1', 'lvs_1', Array.from({ length: 5 }, img)) + + handlers = [fail(503, 'SERVICE_BUSY', { 'Retry-After': '1' }), reply(200, { success: true, data: {} })] + await assert.rejects(complete(), (err) => { + assert.ok(err instanceof LiveXFaceApiError) + assert.equal(err.statusCode, 503) + assert.equal(err.code, 'SERVICE_BUSY') + return true + }) + assert.equal(requests.length, 1) + assert.deepEqual(client.slept, []) + + requests = [] + handlers = [fail(429, 'RATE_LIMIT_EXCEEDED', { 'Retry-After': '2' }), reply(200, { success: true, data: { isLive: true, steps: [] } })] + const res = await complete() + assert.equal(res.isLive, true) + assert.equal(requests.length, 2) + assert.deepEqual(client.slept, [2000]) +})