Marc Mintel
5397309103
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59 lines
1.8 KiB
Plaintext
59 lines
1.8 KiB
Plaintext
/*
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* Copyright The OpenTelemetry Authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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import { diag } from '@opentelemetry/api';
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/**
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* Returns a function that logs an error using the provided logger, or a
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* console logger if one was not provided.
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*/
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export function loggingErrorHandler() {
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return (ex) => {
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diag.error(stringifyException(ex));
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};
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}
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/**
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* Converts an exception into a string representation
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* @param {Exception} ex
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*/
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function stringifyException(ex) {
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if (typeof ex === 'string') {
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return ex;
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}
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else {
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return JSON.stringify(flattenException(ex));
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}
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}
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/**
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* Flattens an exception into key-value pairs by traversing the prototype chain
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* and coercing values to strings. Duplicate properties will not be overwritten;
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* the first insert wins.
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*/
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function flattenException(ex) {
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const result = {};
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let current = ex;
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while (current !== null) {
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Object.getOwnPropertyNames(current).forEach(propertyName => {
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if (result[propertyName])
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return;
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const value = current[propertyName];
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if (value) {
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result[propertyName] = String(value);
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}
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});
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current = Object.getPrototypeOf(current);
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}
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return result;
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}
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//# sourceMappingURL=logging-error-handler.js.map |