@opentelemetry/api
Version:
Public API for OpenTelemetry
66 lines • 2.45 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.wrapSpanContext = exports.isSpanContextValid = exports.isValidSpanId = exports.isValidTraceId = void 0;
/*
* Copyright The OpenTelemetry Authors
* SPDX-License-Identifier: Apache-2.0
*/
const invalid_span_constants_1 = require("./invalid-span-constants");
const NonRecordingSpan_1 = require("./NonRecordingSpan");
// Valid characters (0-9, a-f, A-F) are marked as 1.
const isHex = new Uint8Array([
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1,
]);
function isValidHex(id, length) {
// As of 1.9.0 the id was allowed to be a non-string value,
// even though it was not possible in the types.
if (typeof id !== 'string' || id.length !== length)
return false;
let r = 0;
for (let i = 0; i < id.length; i += 4) {
r +=
(isHex[id.charCodeAt(i)] | 0) +
(isHex[id.charCodeAt(i + 1)] | 0) +
(isHex[id.charCodeAt(i + 2)] | 0) +
(isHex[id.charCodeAt(i + 3)] | 0);
}
return r === length;
}
/**
* @since 1.0.0
*/
function isValidTraceId(traceId) {
return isValidHex(traceId, 32) && traceId !== invalid_span_constants_1.INVALID_TRACEID;
}
exports.isValidTraceId = isValidTraceId;
/**
* @since 1.0.0
*/
function isValidSpanId(spanId) {
return isValidHex(spanId, 16) && spanId !== invalid_span_constants_1.INVALID_SPANID;
}
exports.isValidSpanId = isValidSpanId;
/**
* Returns true if this {@link SpanContext} is valid.
* @return true if this {@link SpanContext} is valid.
*
* @since 1.0.0
*/
function isSpanContextValid(spanContext) {
return (isValidTraceId(spanContext.traceId) && isValidSpanId(spanContext.spanId));
}
exports.isSpanContextValid = isSpanContextValid;
/**
* Wrap the given {@link SpanContext} in a new non-recording {@link Span}
*
* @param spanContext span context to be wrapped
* @returns a new non-recording {@link Span} with the provided context
*/
function wrapSpanContext(spanContext) {
return new NonRecordingSpan_1.NonRecordingSpan(spanContext);
}
exports.wrapSpanContext = wrapSpanContext;
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