@bitblit/epsilon
Version:
Tiny adapter to simplify building API gateway Lambda APIS
53 lines • 3.02 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 });
exports.RetryProcessor = void 0;
const common_1 = require("@bitblit/ratchet/common");
const string_ratchet_1 = require("@bitblit/ratchet/common/string-ratchet");
const number_ratchet_1 = require("@bitblit/ratchet/common/number-ratchet");
class RetryProcessor {
constructor(delegate, opts) {
this.delegate = delegate;
this.opts = opts;
}
get typeName() {
var _a, _b;
return string_ratchet_1.StringRatchet.trimToEmpty((_a = this.opts) === null || _a === void 0 ? void 0 : _a.typePrefix) + this.delegate.typeName + string_ratchet_1.StringRatchet.trimToEmpty((_b = this.opts) === null || _b === void 0 ? void 0 : _b.typeSuffix);
}
handleEvent(data, mgr) {
return __awaiter(this, void 0, void 0, function* () {
const tryNumber = data && data[RetryProcessor.RETRY_FIELD_NAME] ? number_ratchet_1.NumberRatchet.safeNumber(data[RetryProcessor.RETRY_FIELD_NAME]) : 1;
const dataCopy = data ? Object.assign({}, data) : null;
delete dataCopy[RetryProcessor.RETRY_FIELD_NAME];
common_1.Logger.info('RetryProcessor : %s : Try %d of %d', this.delegate.typeName, tryNumber, this.opts.retryCount);
try {
yield this.delegate.handleEvent(dataCopy, mgr);
}
catch (err) {
common_1.Logger.error('Failed to process : %s', err, err);
if (tryNumber < this.opts.retryCount) {
const waitTimeMS = tryNumber * this.opts.baseDelayMS;
common_1.Logger.info('Firing automatic retry after a wait of %s', common_1.DurationRatchet.formatMsDuration(waitTimeMS));
yield common_1.PromiseRatchet.wait(waitTimeMS);
const wrapped = dataCopy || {};
wrapped[RetryProcessor.RETRY_FIELD_NAME] = tryNumber + 1;
yield mgr.fireImmediateProcessRequestByParts(this.typeName, wrapped);
}
else {
common_1.Logger.error('That was the last try - giving up');
}
}
});
}
}
exports.RetryProcessor = RetryProcessor;
RetryProcessor.RETRY_FIELD_NAME = '___RetryProcessorTryNumber';
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