Function initializeTelemetry

src/utils/telemetry/instrumentation.ts:422–706

()

}

export async function initializeTelemetry() {
  profileCheckpoint('telemetry_init_start')
  bootstrapTelemetry()

  // Console exporters call console.dir on a timer (5s logs/traces, 60s
  // metrics), writing pretty-printed objects to stdout. In stream-json
  // mode stdout is the SDK message channel; the first line (`{`) breaks
  // the SDK's line reader. Stripped here (not main.tsx) because init.ts
  // re-runs applyConfigEnvironmentVariables() inside initializeTelemetry-
  // AfterTrust for remote-managed-settings users, and bootstrapTelemetry
  // above copies ANT_OTEL_* for ant users — both would undo an earlier strip.
  if (getHasFormattedOutput()) {
    for (const key of [
      'OTEL_METRICS_EXPORTER',
      'OTEL_LOGS_EXPORTER',
      'OTEL_TRACES_EXPORTER',
    ] as const) {
      const v = process.env[key]
      if (v?.includes('console')) {
        process.env[key] = v
          .split(',')
          .map(s => s.trim())
          .filter(s => s !== 'console')
          .join(',')
      }
    }
  }

  diag.setLogger(new ClaudeCodeDiagLogger(), DiagLogLevel.ERROR)

  // Initialize Perfetto tracing (independent of OTEL)
  // Enable via CLAUDE_CODE_PERFETTO_TRACE=1 or CLAUDE_CODE_PERFETTO_TRACE=<path>
  initializePerfettoTracing()

  const readers = []

  // Add customer exporters (if enabled)
  const telemetryEnabled = isTelemetryEnabled()
  logForDebugging(
    `[3P telemetry] isTelemetryEnabled=${telemetryEnabled} (CLAUDE_CODE_ENABLE_TELEMETRY=${process.env.CLAUDE_CODE_ENABLE_TELEMETRY})`,
  )
  if (telemetryEnabled) {
    readers.push(...(await getOtlpReaders()))
  }

  // Add BigQuery exporter (for API customers, C4E users, and internal users)
  if (isBigQueryMetricsEnabled()) {
    readers.push(getBigQueryExportingReader())
  }

  // Create base resource with service attributes
  const platform = getPlatform()
  const baseAttributes: Record<string, string> = {
    [ATTR_SERVICE_NAME]: 'claude-code',
    [ATTR_SERVICE_VERSION]: MACRO.VERSION,
  }

  // Add WSL-specific attributes if running on WSL