@opentelemetry/id-generator-aws-xray
Version:
AWS X-Ray ID generator for OpenTelemetry
53 lines • 2.19 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.AWSXRayIdGenerator = void 0;
const xray_id_generation_1 = require("../../internal/xray-id-generation");
/**
* IdGenerator that generates trace IDs conforming to AWS X-Ray format.
* https://docs.aws.amazon.com/xray/latest/devguide/xray-api-sendingdata.html#xray-api-traceids
*/
class AWSXRayIdGenerator {
/**
* Returns a random 16-byte trace ID formatted/encoded as a 32 lowercase hex
* characters corresponding to 128 bits. The first 4 bytes correspond to the current
* time, in seconds, as per X-Ray trace ID format.
*/
generateTraceId() {
return (0, xray_id_generation_1.generateTraceId)(generateRandomBytes);
}
/**
* Returns a random 8-byte span ID formatted/encoded as a 16 lowercase hex
* characters corresponding to 64 bits.
*/
generateSpanId() {
return (0, xray_id_generation_1.generateSpanId)(generateRandomBytes);
}
}
exports.AWSXRayIdGenerator = AWSXRayIdGenerator;
const SHARED_CHAR_CODES_ARRAY = Array(xray_id_generation_1.TRACE_ID_BYTES * 2);
function generateRandomBytes(bytes) {
for (let i = 0; i < bytes * 2; i++) {
SHARED_CHAR_CODES_ARRAY[i] = Math.floor(Math.random() * 16) + 48;
// valid hex characters in the range 48-57 and 97-102
if (SHARED_CHAR_CODES_ARRAY[i] >= 58) {
SHARED_CHAR_CODES_ARRAY[i] += 39;
}
}
return String.fromCharCode.apply(null, SHARED_CHAR_CODES_ARRAY.slice(0, bytes * 2));
}
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