@opencensus/propagation-b3
Version:
Opencensus propagation package for B3 format.
69 lines • 2.42 kB
JavaScript
;
/**
* Copyright 2019, OpenCensus 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
*
* http://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.isValidOption = exports.isValidSpanId = exports.isValidTraceId = void 0;
/**
* Determines if the given hex string is truely a hex value. False if value is
* null.
* @param value
*/
const isHex = (value) => {
return typeof value === 'string' && /^[0-9A-F]*$/i.test(value);
};
/**
* Determines if the given hex string is all zeros. False if value is null.
* @param value
*/
const isNotAllZeros = (value) => {
return typeof value === 'string' && !/^[0]*$/i.test(value);
};
/**
* Determines if the given hex string is of the given length. False if value is
* null.
* @param value
*/
const isLength = (length) => {
return (value) => {
return typeof value === 'string' && value.length === length;
};
};
/**
* Compose a set of validation functions into a single validation call.
*/
const compose = (...fns) => {
// @ts-expect-error ts-migrate(2322) FIXME: Type '(value: string) => ValidationFn' is not assi... Remove this comment to see the full error message
return (value) => {
// @ts-expect-error ts-migrate(2769) FIXME: No overload matches this call.
return fns.reduce((isValid, fn) => isValid && fn(value), true);
};
};
/**
* Determines if the given traceId is valid based on section 2.2.2.1 of the
* Trace Context spec.
*/
exports.isValidTraceId = compose(isHex, isNotAllZeros, isLength(32));
/**
* Determines if the given spanId is valid based on section 2.2.2.2 of the Trace
* Context spec.
*/
exports.isValidSpanId = compose(isHex, isNotAllZeros, isLength(16));
/**
* Determines if the given option is valid based on section 2.2.3 of the Trace
* Context spec.
*/
exports.isValidOption = compose(isHex, isLength(2));
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