import { TraceFlags } from '@opentelemetry/api';
import { debug, SEMANTIC_LINK_ATTRIBUTE_LINK_TYPE, getActiveSpan, spanIsSampled } from '@sentry/core';
import { DEBUG_BUILD } from '../debug-build.js';

const SENTRY_TRACE_LINK_KEY_PREFIX = "__SENTRY_TRACE_LINK__";
function getTraceLinkKey(methodName) {
  return `${SENTRY_TRACE_LINK_KEY_PREFIX}${methodName}`;
}
function storeSpanContext(originalStorage, methodName) {
  try {
    const activeSpan = getActiveSpan();
    if (activeSpan) {
      const spanContext = activeSpan.spanContext();
      const storedContext = {
        traceId: spanContext.traceId,
        spanId: spanContext.spanId,
        sampled: spanIsSampled(activeSpan)
      };
      originalStorage.kv.put(getTraceLinkKey(methodName), storedContext);
    }
  } catch (error) {
    DEBUG_BUILD && debug.log(`[CloudflareClient] Error storing span context for method ${methodName}`, error);
  }
}
function getStoredSpanContext(originalStorage, methodName) {
  try {
    return originalStorage.kv.get(getTraceLinkKey(methodName));
  } catch (error) {
    DEBUG_BUILD && debug.log(`[CloudflareClient] Error retrieving span context for method ${methodName}`, error);
    return void 0;
  }
}
function buildSpanLinks(storedContext) {
  return [
    {
      context: {
        traceId: storedContext.traceId,
        spanId: storedContext.spanId,
        traceFlags: storedContext.sampled ? TraceFlags.SAMPLED : TraceFlags.NONE
      },
      attributes: {
        [SEMANTIC_LINK_ATTRIBUTE_LINK_TYPE]: "previous_trace"
      }
    }
  ];
}

export { buildSpanLinks, getStoredSpanContext, getTraceLinkKey, storeSpanContext };
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