chore: refactor

packages/core/src/tracing/index.js

@@ -22,7 +22,7 @@ const {
   isESMApp
 } = require('../util/esm');
 const iitmHook = require('../util/iitmHook');
-const { logPackageInstallation } = require('../util/logPackageInstallation');
+const { getPackageInstallation } = require('../util/getPackageInstallation');
 
 let tracingEnabled = false;
 let tracingActivated = false;
@@ -180,8 +180,12 @@ exports.preInit = function preInit(preliminaryConfig) {
  * @param {CollectorPIDStore} _processIdentityProvider
  */
 exports.init = function init(_config, downstreamConnection, _processIdentityProvider) {
-  // Logs the instana instrumentation method of client application in debug mode
-  logPackageInstallation();
+  if (process.env.INSTANA_DEBUG || process.env.INSTANA_LOG_LEVEL === 'debug') {
+    const method = getPackageInstallation();
+
+    // eslint-disable-next-line no-console
+    console.debug(`The App has instrumented instana using: ${method}`);
+  }
 
   // Consider removing this in the next major release(v4.x) of the @instana package.
   if (hasExperimentalLoaderFlag()) {

packages/core/src/util/getPackageInstallation.js

@@ -0,0 +1,37 @@
+/*
+ * (c) Copyright IBM Corp. 2024
+ */
+
+'use strict';
+
+const isESMApp = require('./esm').isESMApp;
+
+exports.getPackageInstallation = function getPackageInstallation() {
+  const instrumentationMap = {
+    usingExperimentalLoaderFlag: '--experimental-loader flag',
+    usingImport: '--import flag',
+    usingRequire: '--require flag',
+    noFlags: 'no additional flags'
+  };
+  let method = '';
+
+  if (isESMApp()) {
+    const usingExperimentalLoaderFlag =
+      process.env.NODE_OPTIONS?.includes('--experimental-loader')
+      || process.execArgv?.[0]?.includes('--experimental-loader')
+      ? 'usingExperimentalLoaderFlag' : '';
+    const usingImportFlag =
+      process.env.NODE_OPTIONS?.includes('--import') || process.execArgv?.[0]?.includes('--import')
+      ? 'usingImport' : '';
+    method = instrumentationMap[usingExperimentalLoaderFlag || usingImportFlag || 'noFlags'];
+  } else {
+    const usingRequire =
+      (process.env.NODE_OPTIONS?.includes('--require') && process.env.NODE_OPTIONS?.includes('@instana')) ||
+      (process.execArgv?.[0]?.includes('--require') && process.execArgv?.[0].includes('@instana')) ||
+      (process.execArgv?.[0]?.includes('--require') && process.execArgv?.[1].includes('@instana'))
+      ? 'usingRequire' : '';
+      method = instrumentationMap[usingRequire || 'noFlags'];
+  }
+
+  return method;
+};