@opentelemetry/core
Version:
OpenTelemetry Core provides constants and utilities shared by all OpenTelemetry SDK packages.
79 lines • 3.39 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.parseKeyPairsIntoRecord = exports.parsePairKeyValue = exports.getKeyPairs = exports.serializeKeyPairs = void 0;
/*
* 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.
*/
const api_1 = require("@opentelemetry/api");
const constants_1 = require("./constants");
function serializeKeyPairs(keyPairs) {
return keyPairs.reduce((hValue, current) => {
const value = `${hValue}${hValue !== '' ? constants_1.BAGGAGE_ITEMS_SEPARATOR : ''}${current}`;
return value.length > constants_1.BAGGAGE_MAX_TOTAL_LENGTH ? hValue : value;
}, '');
}
exports.serializeKeyPairs = serializeKeyPairs;
function getKeyPairs(baggage) {
return baggage.getAllEntries().map(([key, value]) => {
let entry = `${encodeURIComponent(key)}=${encodeURIComponent(value.value)}`;
// include opaque metadata if provided
// NOTE: we intentionally don't URI-encode the metadata - that responsibility falls on the metadata implementation
if (value.metadata !== undefined) {
entry += constants_1.BAGGAGE_PROPERTIES_SEPARATOR + value.metadata.toString();
}
return entry;
});
}
exports.getKeyPairs = getKeyPairs;
function parsePairKeyValue(entry) {
const valueProps = entry.split(constants_1.BAGGAGE_PROPERTIES_SEPARATOR);
if (valueProps.length <= 0)
return;
const keyPairPart = valueProps.shift();
if (!keyPairPart)
return;
const separatorIndex = keyPairPart.indexOf(constants_1.BAGGAGE_KEY_PAIR_SEPARATOR);
if (separatorIndex <= 0)
return;
const key = decodeURIComponent(keyPairPart.substring(0, separatorIndex).trim());
const value = decodeURIComponent(keyPairPart.substring(separatorIndex + 1).trim());
let metadata;
if (valueProps.length > 0) {
metadata = (0, api_1.baggageEntryMetadataFromString)(valueProps.join(constants_1.BAGGAGE_PROPERTIES_SEPARATOR));
}
return { key, value, metadata };
}
exports.parsePairKeyValue = parsePairKeyValue;
/**
* Parse a string serialized in the baggage HTTP Format (without metadata):
* https://github.com/w3c/baggage/blob/master/baggage/HTTP_HEADER_FORMAT.md
*/
function parseKeyPairsIntoRecord(value) {
if (typeof value !== 'string' || value.length === 0)
return {};
return value
.split(constants_1.BAGGAGE_ITEMS_SEPARATOR)
.map(entry => {
return parsePairKeyValue(entry);
})
.filter(keyPair => keyPair !== undefined && keyPair.value.length > 0)
.reduce((headers, keyPair) => {
// eslint-disable-next-line @typescript-eslint/no-non-null-assertion
headers[keyPair.key] = keyPair.value;
return headers;
}, {});
}
exports.parseKeyPairsIntoRecord = parseKeyPairsIntoRecord;
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