Merge pull request #3 from coralogix/multiple-instrumentation-definitions-with-same-name

fix: handling of multiple`InstrumentationNodeModuleDefinition` with the same name

Author: drewcorlin1

packages/esbuild-plugin-node/src/common.ts

@@ -32,39 +32,42 @@ export function wrapModule(
   ${originalSource}
 })(...arguments);
 {
-  let mod = module.exports;
-
-  const { satisfies } = require('semver');
-  const { ${oTelInstrumentationClass} } = require('${oTelInstrumentationPackage}');
   const { diag } = require('@opentelemetry/api');
-  const instrumentations = new ${oTelInstrumentationClass}(${oTelInstrumentationConstructorArgs}).getModuleDefinitions();
 
-  if (instrumentations.length > 1 && !'${instrumentationName}') {
-    diag.error('instrumentationName must be specified because ${oTelInstrumentationClass} has multiple instrumentations');
-    return;
-  }
-  const instrumentation = ${
-    instrumentationName
-      ? `instrumentations.find(i => i.name === '${instrumentationName}')`
-      : 'instrumentations[0]'
-  };
+  try {
+    let mod = module.exports;
 
-  if (instrumentation.patch) {
-    mod = instrumentation.patch(mod)
-  }
+    const { satisfies } = require('semver');
+    const { ${oTelInstrumentationClass} } = require('${oTelInstrumentationPackage}');
+    const instrumentations = new ${oTelInstrumentationClass}(${oTelInstrumentationConstructorArgs}).getModuleDefinitions();
 
-  if (instrumentation.files?.length) {
-    for (const file of instrumentation.files.filter(f => f.name === '${path}')) {
-      if (!file.supportedVersions.some(v => satisfies('${moduleVersion}', v))) {
-        diag.debug('Skipping instrumentation for ${path}@${moduleVersion} because it does not match supported versions ' + file.supportedVersions.join(','));
+    for (const instrumentation of instrumentations.filter(i => i.name === '${instrumentationName}')) {
+      if (!instrumentation.supportedVersions.some(v => satisfies('${moduleVersion}', v))) {
+        diag.debug('Skipping instrumentation ${instrumentationName}, because module version ${moduleVersion} does not match supported versions ' + instrumentation.supportedVersions.join(','));
         continue;
       }
-      mod = file.patch(mod, '${moduleVersion}');
-    }
-  }
 
+      if (instrumentation.patch) {
+        diag.debug('Applying instrumentation patch ${instrumentationName} via esbuild-plugin-node');
+        mod = instrumentation.patch(mod)
+      }
 
-  module.exports = mod;
+      if (instrumentation.files?.length) {
+        for (const file of instrumentation.files.filter(f => f.name === '${path}')) {
+          if (!file.supportedVersions.some(v => satisfies('${moduleVersion}', v))) {
+            diag.debug('Skipping instrumentation for ${path}@${moduleVersion} because it does not match supported versions' + file.supportedVersions.join(','));
+            continue;
+          }
+          diag.debug('Applying instrumentation patch to ${path}@${moduleVersion} via esbuild-plugin-node');
+          mod = file.patch(mod, '${moduleVersion}');
+        }
+      }
+    }
+
+    module.exports = mod;
+  } catch (e) {
+    diag.error('Error applying instrumentation ${instrumentationName}', e);
+  }
 }
 `;
 }