rx-player
Version:
Canal+ HTML5 Video Player
177 lines (176 loc) • 9.6 kB
JavaScript
;
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
var __generator = (this && this.__generator) || function (thisArg, body) {
var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g = Object.create((typeof Iterator === "function" ? Iterator : Object).prototype);
return g.next = verb(0), g["throw"] = verb(1), g["return"] = verb(2), typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
function verb(n) { return function (v) { return step([n, v]); }; }
function step(op) {
if (f) throw new TypeError("Generator is already executing.");
while (g && (g = 0, op[0] && (_ = 0)), _) try {
if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
if (y = 0, t) op = [op[0] & 2, t.value];
switch (op[0]) {
case 0: case 1: t = op; break;
case 4: _.label++; return { value: op[1], done: false };
case 5: _.label++; y = op[1]; op = [0]; continue;
case 7: op = _.ops.pop(); _.trys.pop(); continue;
default:
if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
if (t[2]) _.ops.pop();
_.trys.pop(); continue;
}
op = body.call(thisArg, _);
} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
}
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.default = createThumbnailFetcher;
exports.getThumbnailFetcherRequestOptions = getThumbnailFetcherRequestOptions;
var config_1 = require("../../../config");
var errors_1 = require("../../../errors");
var log_1 = require("../../../log");
var object_assign_1 = require("../../../utils/object_assign");
var task_canceller_1 = require("../../../utils/task_canceller");
var error_selector_1 = require("../utils/error_selector");
var schedule_request_1 = require("../utils/schedule_request");
/**
* Create an `IThumbnailFetcher` object which will allow to easily fetch and parse
* segments.
* An `IThumbnailFetcher` also implements a retry mechanism, based on the given
* `requestOptions` argument, which may retry a segment request when it fails.
*
* @param {Object} pipeline
* @param {Object|null} cdnPrioritizer
* @returns {Function}
*/
function createThumbnailFetcher(
/** The transport-specific logic allowing to load thumbnails. */
pipeline,
/**
* Abstraction allowing to synchronize, update and keep track of the
* priorization of the CDN to use to load any given segment, in cases where
* multiple ones are available.
*
* Can be set to `null` in which case a minimal priorization logic will be used
* instead.
*/
cdnPrioritizer) {
var loadThumbnail = pipeline.loadThumbnail;
// TODO short-lived cache?
/**
* Fetch a specific segment.
* @param {Object} thumbnail
* @param {Object} thumbnailTrack
* @param {Object} requestOptions
* @param {Object} cancellationSignal
* @returns {Promise}
*/
return function fetchThumbnail(thumbnail, thumbnailTrack, requestOptions, cancellationSignal) {
return __awaiter(this, void 0, void 0, function () {
function onCancellation() {
log_1.default.debug("TF: Thumbnail request cancelled", thumbnail.time);
}
/**
* Call a segment loader for the given URL with the right arguments.
* @param {Object|null} cdnMetadata
* @returns {Promise}
*/
function callLoaderWithUrl(cdnMetadata) {
return loadThumbnail(cdnMetadata, thumbnail, pipelineRequestOptions, cancellationSignal);
}
/**
* Function called when the function request is retried.
* @param {*} err
*/
function onRetry(err) {
var formattedErr = (0, error_selector_1.default)(err);
log_1.default.warn("TF: Thumbnail request retry ", thumbnail.time, formattedErr);
}
var connectionTimeout, pipelineRequestOptions, res, err_1, parsed;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
if (requestOptions.connectionTimeout === undefined ||
requestOptions.connectionTimeout < 0) {
connectionTimeout = undefined;
}
else {
connectionTimeout = requestOptions.connectionTimeout;
}
pipelineRequestOptions = {
timeout: requestOptions.requestTimeout < 0 ? undefined : requestOptions.requestTimeout,
connectionTimeout: connectionTimeout,
cmcdPayload: undefined,
};
log_1.default.debug("TF: Beginning thumbnail request", thumbnail.time);
cancellationSignal.register(onCancellation);
_a.label = 1;
case 1:
_a.trys.push([1, 3, , 4]);
return [4 /*yield*/, (0, schedule_request_1.scheduleRequestWithCdns)(thumbnailTrack.cdnMetadata, cdnPrioritizer, callLoaderWithUrl, (0, object_assign_1.default)({ onRetry: onRetry }, requestOptions), cancellationSignal)];
case 2:
res = _a.sent();
if (cancellationSignal.isCancelled()) {
return [2 /*return*/, Promise.reject(cancellationSignal.cancellationError)];
}
log_1.default.debug("TF: Thumbnail request ended with success", thumbnail.time);
cancellationSignal.deregister(onCancellation);
return [3 /*break*/, 4];
case 3:
err_1 = _a.sent();
cancellationSignal.deregister(onCancellation);
if (err_1 instanceof task_canceller_1.CancellationError) {
log_1.default.debug("TF: Thumbnail request aborted", thumbnail.time);
throw err_1;
}
log_1.default.debug("TF: Thumbnail request failed", thumbnail.time);
throw (0, error_selector_1.default)(err_1);
case 4:
try {
parsed = pipeline.parseThumbnail(res.responseData, {
thumbnail: thumbnail,
thumbnailTrack: thumbnailTrack,
});
return [2 /*return*/, parsed];
}
catch (error) {
throw (0, errors_1.formatError)(error, {
defaultCode: "PIPELINE_PARSE_ERROR",
defaultReason: "Unknown parsing error",
});
}
return [2 /*return*/];
}
});
});
};
}
/**
* @param {Object} baseOptions
* @returns {Object}
*/
function getThumbnailFetcherRequestOptions(_a) {
var maxRetry = _a.maxRetry, requestTimeout = _a.requestTimeout, connectionTimeout = _a.connectionTimeout;
var _b = config_1.default.getCurrent(), DEFAULT_MAX_THUMBNAIL_REQUESTS_RETRY_ON_ERROR = _b.DEFAULT_MAX_THUMBNAIL_REQUESTS_RETRY_ON_ERROR, DEFAULT_THUMBNAIL_REQUEST_TIMEOUT = _b.DEFAULT_THUMBNAIL_REQUEST_TIMEOUT, DEFAULT_THUMBNAIL_CONNECTION_TIMEOUT = _b.DEFAULT_THUMBNAIL_CONNECTION_TIMEOUT, INITIAL_BACKOFF_DELAY_BASE = _b.INITIAL_BACKOFF_DELAY_BASE, MAX_BACKOFF_DELAY_BASE = _b.MAX_BACKOFF_DELAY_BASE;
return {
maxRetry: maxRetry !== null && maxRetry !== void 0 ? maxRetry : DEFAULT_MAX_THUMBNAIL_REQUESTS_RETRY_ON_ERROR,
baseDelay: INITIAL_BACKOFF_DELAY_BASE.REGULAR,
maxDelay: MAX_BACKOFF_DELAY_BASE.REGULAR,
requestTimeout: requestTimeout === undefined ? DEFAULT_THUMBNAIL_REQUEST_TIMEOUT : requestTimeout,
connectionTimeout: connectionTimeout === undefined
? DEFAULT_THUMBNAIL_CONNECTION_TIMEOUT
: connectionTimeout,
};
}