Fix copyright header missing

.github/pull_request_template.md

@@ -8,6 +8,7 @@ _List any issues this PR will resolve, e.g. Resolves [...]._
 - [ ] Updated documentation (docs/ppl-lang/README.md)
 - [ ] Implemented unit tests
 - [ ] Implemented tests for combination with other commands
+- [ ] New added source code should include a copyright header
 - [ ] Commits are signed per the DCO using `--signoff`
 
 By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

flint-core/src/main/java/org/opensearch/flint/core/metrics/reporter/DimensionedName.java

@@ -1,3 +1,8 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 package org.opensearch.flint.core.metrics.reporter;
 
 import com.amazonaws.services.cloudwatch.model.Dimension;

flint-core/src/main/java/org/opensearch/flint/core/metrics/reporter/DimensionedNameBuilder.java

@@ -1,3 +1,8 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 package org.opensearch.flint.core.metrics.reporter;
 
 import com.amazonaws.services.cloudwatch.model.Dimension;

flint-core/src/main/scala/org/opensearch/flint/core/storage/BulkRequestRateLimiter.java

@@ -1,3 +1,8 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 package org.opensearch.flint.core.storage;
 
 import dev.failsafe.RateLimiter;

flint-core/src/main/scala/org/opensearch/flint/core/storage/BulkRequestRateLimiterHolder.java

@@ -1,3 +1,8 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 package org.opensearch.flint.core.storage;
 
 import org.opensearch.flint.core.FlintOptions;

flint-core/src/main/scala/org/opensearch/flint/core/storage/OpenSearchBulkRetryWrapper.java

@@ -1,3 +1,8 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 package org.opensearch.flint.core.storage;
 
 import dev.failsafe.Failsafe;

flint-core/src/main/scala/org/opensearch/flint/core/storage/OpenSearchUpdater.java

@@ -1,3 +1,8 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 package org.opensearch.flint.core.storage;
 
 import org.opensearch.action.support.WriteRequest;

flint-core/src/test/java/org/opensearch/flint/core/metrics/MetricsUtilTest.java

@@ -1,3 +1,8 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 package org.opensearch.flint.core.metrics;
 
 import com.codahale.metrics.Counter;

flint-core/src/test/java/org/opensearch/flint/core/metrics/reporter/DimensionedNameTest.java

@@ -1,3 +1,8 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 package org.opensearch.flint.core.metrics.reporter;
 
 import static org.hamcrest.CoreMatchers.hasItems;

flint-core/src/test/scala/org/opensearch/flint/core/auth/AWSRequestSigningApacheInterceptorTest.java

@@ -1,3 +1,8 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 package org.opensearch.flint.core.auth;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;

flint-core/src/test/scala/org/opensearch/flint/core/storage/BulkRequestRateLimiterHolderTest.java

@@ -1,3 +1,8 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 package org.opensearch.flint.core.storage;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;

flint-core/src/test/scala/org/opensearch/flint/core/storage/BulkRequestRateLimiterTest.java

@@ -1,3 +1,8 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 package org.opensearch.flint.core.storage;
 
 

flint-core/src/test/scala/org/opensearch/flint/core/storage/OpenSearchBulkRetryWrapperTest.java

@@ -1,3 +1,8 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 package org.opensearch.flint.core.storage;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;

ppl-spark-integration/src/main/java/org/opensearch/sql/ast/expression/FieldsMapping.java

@@ -1,3 +1,8 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 package org.opensearch.sql.ast.expression;
 
 import lombok.Getter;

ppl-spark-integration/src/main/java/org/opensearch/sql/ast/expression/IsEmpty.java

@@ -1,3 +1,8 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 package org.opensearch.sql.ast.expression;
 
 import com.google.common.collect.ImmutableList;

ppl-spark-integration/src/main/java/org/opensearch/sql/ast/expression/Scope.java

@@ -1,3 +1,8 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 package org.opensearch.sql.ast.expression;
 
 import lombok.EqualsAndHashCode;

ppl-spark-integration/src/main/java/org/opensearch/sql/ast/tree/Correlation.java

@@ -1,3 +1,8 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 package org.opensearch.sql.ast.tree;
 
 import com.google.common.collect.ImmutableList;

ppl-spark-integration/src/main/java/org/opensearch/sql/ast/tree/FillNull.java

@@ -1,3 +1,8 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 package org.opensearch.sql.ast.tree;
 
 import lombok.Getter;

ppl-spark-integration/src/main/java/org/opensearch/sql/common/antlr/Parser.java

@@ -1,3 +1,8 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 package org.opensearch.sql.common.antlr;
 
 import org.antlr.v4.runtime.tree.ParseTree;

ppl-spark-integration/src/main/java/org/opensearch/sql/ppl/utils/JoinSpecTransformer.java

@@ -1,3 +1,8 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 package org.opensearch.sql.ppl.utils;
 
 import org.apache.spark.sql.catalyst.expressions.Expression;

ppl-spark-integration/src/main/java/org/opensearch/sql/ppl/utils/ParseStrategy.java

@@ -1,3 +1,8 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 package org.opensearch.sql.ppl.utils;
 
 import org.apache.spark.sql.catalyst.analysis.UnresolvedStar$;

ppl-spark-integration/src/main/java/org/opensearch/sql/ppl/utils/RelationUtils.java

@@ -1,3 +1,8 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 package org.opensearch.sql.ppl.utils;
 
 import org.apache.spark.sql.catalyst.TableIdentifier;

spark-sql-application/src/main/java/org/opensearch/sql/FlintDelegatingSessionCatalog.java

@@ -1,3 +1,8 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 package org.opensearch.sql;
 
 import org.apache.spark.sql.SparkSession;