@opentelemetry/core
Version:
OpenTelemetry Core provides constants and utilities shared by all OpenTelemetry SDK packages.
63 lines • 2.02 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.
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.loggingErrorHandler = void 0;
const api_1 = require("@opentelemetry/api");
/**
* Returns a function that logs an error using the provided logger, or a
* console logger if one was not provided.
*/
function loggingErrorHandler() {
return (ex) => {
api_1.diag.error(stringifyException(ex));
};
}
exports.loggingErrorHandler = loggingErrorHandler;
/**
* Converts an exception into a string representation
* @param {Exception} ex
*/
function stringifyException(ex) {
if (typeof ex === 'string') {
return ex;
}
else {
return JSON.stringify(flattenException(ex));
}
}
/**
* Flattens an exception into key-value pairs by traversing the prototype chain
* and coercing values to strings. Duplicate properties will not be overwritten;
* the first insert wins.
*/
function flattenException(ex) {
const result = {};
let current = ex;
while (current !== null) {
Object.getOwnPropertyNames(current).forEach(propertyName => {
if (result[propertyName])
return;
const value = current[propertyName];
if (value) {
result[propertyName] = String(value);
}
});
current = Object.getPrototypeOf(current);
}
return result;
}
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