lint: Use a new yet-another-license-header eslint-plugin to handle license headers

This changes to a new eslint-plugin to handle license headers. It supports
the configurability that we need to allow additional Copyright holders.
I've manually adapted the Copyright positioning in instr-oracledb
and resource-detector-gcp to conform with the defined license header
pattern. We can adjust the regexp if we need.

Refs: open-telemetry#2969

Author: trentm

eslint.config.mjs

@@ -1,26 +1,51 @@
+/*
+ * Copyright The OpenTelemetry Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 import eslint from '@eslint/js';
 import tseslint from 'typescript-eslint';
 import globals from 'globals';
-import licenseHeaderPlugin from 'eslint-plugin-license-header';
 import nodePlugin from 'eslint-plugin-n';
+import yalhPlugin from 'eslint-plugin-yet-another-license-header';
+
+const defaultLicense = `
+/*
+ * Copyright The OpenTelemetry Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+`;
 
-const license = [
-  '/*',
-  ' * Copyright The OpenTelemetry Authors',
-  ' *',
-  ' * Licensed under the Apache License, Version 2.0 (the "License");',
-  ' * you may not use this file except in compliance with the License.',
-  ' * You may obtain a copy of the License at',
-  ' *',
-  ' *      https://www.apache.org/licenses/LICENSE-2.0',
-  ' *',
-  ' * Unless required by applicable law or agreed to in writing, software',
-  ' * distributed under the License is distributed on an "AS IS" BASIS,',
-  ' * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.',
-  ' * See the License for the specific language governing permissions and',
-  ' * limitations under the License.',
-  ' */',
-];
+// This matches `defaultLicense`, but allows additional Copyright holders
+// either on the same line:
+//    Copyright The OpenTelemetry Authors, <someone>, <another someone>
+// and/or on subsequent lines:
+//    Copyright The OpenTelemetry Authors
+//    Copyright <someone>
+//    Copyright <another someone>
+const licensePattern = /^\/\*\n \* Copyright The OpenTelemetry Authors(, .+)*\n( \* Copyright .+\n)* \*\n \* Licensed under the Apache License, Version 2.0 \(the "License"\);\n \* you may not use this file except in compliance with the License.\n \* You may obtain a copy of the License at\n \*\n \* {6}https:\/\/www.apache.org\/licenses\/LICENSE-2.0\n \*\n \* Unless required by applicable law or agreed to in writing, software\n \* distributed under the License is distributed on an "AS IS" BASIS,\n \* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n \* See the License for the specific language governing permissions and\n \* limitations under the License.\n \*\/$/
 
 const baseConfig = tseslint.config(
   {
@@ -34,8 +59,7 @@ const baseConfig = tseslint.config(
   {
     files: ['**/*.{js,ts,mjs}', '*.{js,ts,mjs}'],
     plugins: {
-      // XXX
-      // 'license-header': licenseHeaderPlugin,
+      'yet-another-license-header': yalhPlugin,
       node: nodePlugin,
     },
     extends: [
@@ -58,8 +82,10 @@ const baseConfig = tseslint.config(
       quotes: ['error', 'single', { avoidEscape: true }],
       eqeqeq: ['error', 'smart'],
       'prefer-rest-params': 'off',
-      // XXX
-      // 'license-header/header': ['error', license],
+      'yet-another-license-header/header': ['error', {
+        header: defaultLicense,
+        allowedHeaderPatterns: [licensePattern],
+      }],
 
       // new rules
       'no-unused-vars': 'warn',

package-lock.json

@@ -55,8 +55,8 @@
     "cross-env": "^7.0.3",
     "eslint": "9.34.0",
     "eslint-config-prettier": "10.1.8",
-    "eslint-plugin-license-header": "0.8.0",
     "eslint-plugin-n": "17.21.3",
+    "eslint-plugin-yet-another-license-header": "^0.1.0",
     "glob": "^10.4.5",
     "globals": "^16.3.0",
     "lerna": "8.2.3",

package.json

@@ -1,5 +1,6 @@
 /*
  * Copyright The OpenTelemetry Authors
+ * Copyright (c) 2025, Oracle and/or its affiliates.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -12,9 +13,8 @@
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
- *
- * Copyright (c) 2025, Oracle and/or its affiliates.
- * */
+ */
+
 import { safeExecuteInTheMiddle } from '@opentelemetry/instrumentation';
 import {
   Span,

packages/instrumentation-oracledb/src/OracleTelemetryTraceHandler.ts

@@ -1,5 +1,6 @@
 /*
  * Copyright The OpenTelemetry Authors
+ * Copyright (c) 2025, Oracle and/or its affiliates.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -12,9 +13,7 @@
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
- *
- * Copyright (c) 2025, Oracle and/or its affiliates.
- * */
+ */
 
 // Contains span names produced by instrumentation
 // It lists the RPC names (suffix with _MSG like EXECUTE_MSG) and

packages/instrumentation-oracledb/src/constants.ts

@@ -1,5 +1,6 @@
 /*
  * Copyright The OpenTelemetry Authors
+ * Copyright (c) 2025, Oracle and/or its affiliates.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -12,9 +13,7 @@
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
- *
- * Copyright (c) 2025, Oracle and/or its affiliates.
- * */
+ */
 
 export { OracleInstrumentation } from './instrumentation';
 export type {

packages/instrumentation-oracledb/src/index.ts

@@ -1,5 +1,6 @@
 /*
  * Copyright The OpenTelemetry Authors
+ * Copyright (c) 2025, Oracle and/or its affiliates.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -12,9 +13,8 @@
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
- *
- * Copyright (c) 2025, Oracle and/or its affiliates.
- * */
+ */
+
 import {
   InstrumentationBase,
   InstrumentationNodeModuleDefinition,

packages/instrumentation-oracledb/src/instrumentation.ts

@@ -1,5 +1,6 @@
 /*
  * Copyright The OpenTelemetry Authors
+ * Copyright (c) 2025, Oracle and/or its affiliates.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -12,9 +13,7 @@
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
- *
- * Copyright (c) 2025, Oracle and/or its affiliates.
- * */
+ */
 
 import type * as oracledbTypes from 'oracledb';
 import type * as api from '@opentelemetry/api';

packages/instrumentation-oracledb/src/internal-types.ts

@@ -1,5 +1,6 @@
 /*
  * Copyright The OpenTelemetry Authors
+ * Copyright (c) 2025, Oracle and/or its affiliates.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -12,9 +13,7 @@
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
- *
- * Copyright (c) 2025, Oracle and/or its affiliates.
- * */
+ */
 
 /**
  * The database management system (DBMS) product as identified

packages/instrumentation-oracledb/src/semconv.ts

@@ -1,5 +1,6 @@
 /*
  * Copyright The OpenTelemetry Authors
+ * Copyright (c) 2025, Oracle and/or its affiliates.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -12,9 +13,8 @@
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
- *
- * Copyright (c) 2025, Oracle and/or its affiliates.
- * */
+ */
+
 import type * as api from '@opentelemetry/api';
 import { InstrumentationConfig } from '@opentelemetry/instrumentation';