@yingyeothon/actor-system
Version:
A basic actor system only using a queue and a lock.
50 lines • 2.38 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());
});
};
Object.defineProperty(exports, "__esModule", { value: true });
const bulk_1 = require("./bulk");
const single_1 = require("./single");
const awaitPolicy_1 = require("../message/awaitPolicy");
const notifyCompletions_1 = require("../awaiter/notifyCompletions");
const logger_1 = require("@yingyeothon/logger");
function processLoop(env, isAlive) {
return __awaiter(this, void 0, void 0, function* () {
const { id, queue, lock, logger = logger_1.nullLogger } = env;
const messageMetas = [];
logger.debug(`actor`, `process-loop`, id);
while (isAlive()) {
logger.debug(`actor`, `try-to-lock`, id);
if (!(yield lock.tryAcquire(id))) {
logger.debug(`actor`, `cannot-lock`, id);
break;
}
let localMetas = [];
switch (env._consume) {
case "single":
localMetas = yield (0, single_1.default)(env, isAlive);
break;
case "bulk":
localMetas = yield (0, bulk_1.default)(env, isAlive);
break;
}
Array.prototype.push.apply(messageMetas, localMetas);
logger.debug(`actor`, `release-lock`, id);
yield lock.release(id);
yield (0, notifyCompletions_1.default)(env, messageMetas.filter((meta) => meta.awaitPolicy === awaitPolicy_1.default.Commit));
if ((yield queue.size(id)) === 0) {
logger.debug(`actor`, `empty-queue`, id);
break;
}
}
return messageMetas;
});
}
exports.default = processLoop;
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