@opentelemetry/core
Version:
OpenTelemetry Core provides constants and utilities shared by all OpenTelemetry SDK packages.
37 lines • 1.36 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.RandomIdGenerator = void 0;
const SPAN_ID_BYTES = 8;
const TRACE_ID_BYTES = 16;
/**
* @deprecated Use the one defined in @opentelemetry/sdk-trace-base instead.
*/
class RandomIdGenerator {
constructor() {
/**
* Returns a random 16-byte trace ID formatted/encoded as a 32 lowercase hex
* characters corresponding to 128 bits.
*/
this.generateTraceId = getIdGenerator(TRACE_ID_BYTES);
/**
* Returns a random 8-byte span ID formatted/encoded as a 16 lowercase hex
* characters corresponding to 64 bits.
*/
this.generateSpanId = getIdGenerator(SPAN_ID_BYTES);
}
}
exports.RandomIdGenerator = RandomIdGenerator;
const SHARED_CHAR_CODES_ARRAY = Array(32);
function getIdGenerator(bytes) {
return function generateId() {
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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