License header check (opensearch-project#142)

* Provide default copyright header using IDE feature

Signed-off-by: bowenlan-amzn <bowenlan23@gmail.com>

* Address opensearch-project#103

history write index is rolled over even if the history indices are
disabled

.gitignore

@@ -1,7 +1,8 @@
 .gradle/
 build/
 out/
-.idea/
+.idea/*
+!.idea/copyright
 *.ipr
 *.iws
 .DS_Store

build-tools/coverage.gradle

@@ -1,3 +1,8 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 /*
  *   Copyright 2019 Amazon.com, Inc. or its affiliates. All Rights Reserved.
  *

build-tools/pkgbuild.gradle

@@ -1,3 +1,8 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 /*
  *   Copyright 2019 Amazon.com, Inc. or its affiliates. All Rights Reserved.
  *

src/main/kotlin/org/opensearch/indexmanagement/indexstatemanagement/IndexStateManagementHistory.kt

@@ -107,7 +107,7 @@ class IndexStateManagementHistory(
     override fun onMaster() {
         try {
             // try to rollover immediately as we might be restarting the cluster
-            rolloverHistoryIndex()
+            if (historyEnabled) rolloverHistoryIndex()
             // schedule the next rollover for approx MAX_AGE later
             scheduledRollover = threadPool.scheduleWithFixedDelay(
                 { rolloverAndDeleteHistoryIndex() },

src/main/kotlin/org/opensearch/indexmanagement/util/DummyFileForLicenseCheck.java

@@ -0,0 +1,12 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package org.opensearch.indexmanagement.util;
+
+/*
+ * Need to have a java file, so licenseHeaders task can function
+ */
+public class DummyFileForLicenseCheck {
+}

src/main/kotlin/org/opensearch/indexmanagement/util/ScheduledJobUtils.kt

@@ -1,3 +1,8 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 /*
  * Copyright 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved.
  *