@opentelemetry/core
Version:
OpenTelemetry Core provides constants and utilities shared by all OpenTelemetry SDK packages.
87 lines • 3.08 kB
JavaScript
/*
* Copyright The OpenTelemetry Authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
var __read = (this && this.__read) || function (o, n) {
var m = typeof Symbol === "function" && o[Symbol.iterator];
if (!m) return o;
var i = m.call(o), r, ar = [], e;
try {
while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);
}
catch (error) { e = { error: error }; }
finally {
try {
if (r && !r.done && (m = i["return"])) m.call(i);
}
finally { if (e) throw e.error; }
}
return ar;
};
var __spreadArray = (this && this.__spreadArray) || function (to, from, pack) {
if (pack || arguments.length === 2) for (var i = 0, l = from.length, ar; i < l; i++) {
if (ar || !(i in from)) {
if (!ar) ar = Array.prototype.slice.call(from, 0, i);
ar[i] = from[i];
}
}
return to.concat(ar || Array.prototype.slice.call(from));
};
import { Deferred } from './promise';
/**
* Bind the callback and only invoke the callback once regardless how many times `BindOnceFuture.call` is invoked.
*/
var BindOnceFuture = /** @class */ (function () {
function BindOnceFuture(_callback, _that) {
this._callback = _callback;
this._that = _that;
this._isCalled = false;
this._deferred = new Deferred();
}
Object.defineProperty(BindOnceFuture.prototype, "isCalled", {
get: function () {
return this._isCalled;
},
enumerable: false,
configurable: true
});
Object.defineProperty(BindOnceFuture.prototype, "promise", {
get: function () {
return this._deferred.promise;
},
enumerable: false,
configurable: true
});
BindOnceFuture.prototype.call = function () {
var _a;
var _this = this;
var args = [];
for (var _i = 0; _i < arguments.length; _i++) {
args[_i] = arguments[_i];
}
if (!this._isCalled) {
this._isCalled = true;
try {
Promise.resolve((_a = this._callback).call.apply(_a, __spreadArray([this._that], __read(args), false))).then(function (val) { return _this._deferred.resolve(val); }, function (err) { return _this._deferred.reject(err); });
}
catch (err) {
this._deferred.reject(err);
}
}
return this._deferred.promise;
};
return BindOnceFuture;
}());
export { BindOnceFuture };
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