[Api] Supports FLIP-27 Source

flink-core-api/src/main/java/org/apache/flink/api/connector/v2/Source.java

@@ -0,0 +1,25 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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
+ *
+ *     http://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.
+ */
+
+package org.apache.flink.api.connector.v2;
+
+/**
+ * Source interface for DataStream api v2. Note that this is a temporary approach, will be removed
+ * in the future.
+ */
+public interface Source<T> {}

flink-core/src/main/java/org/apache/flink/api/connector/v2/SourceUtils.java

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+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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
+ *
+ *     http://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.
+ */
+
+package org.apache.flink.api.connector.v2;
+
+import org.apache.flink.annotation.Experimental;
+
+/** Utils to convert a FLIP-27 based source to a DataStream V2 Source. */
+@Experimental
+public final class SourceUtils {
+    public static <T> Source<T> wrapSource(
+            org.apache.flink.api.connector.source.Source<T, ?, ?> source) {
+        return new WrappedSource<>(source);
+    }
+}

flink-core/src/main/java/org/apache/flink/api/connector/v2/WrappedSource.java

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+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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
+ *
+ *     http://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.
+ */
+
+package org.apache.flink.api.connector.v2;
+
+import org.apache.flink.annotation.Internal;
+
+/** A simple {@link Source} implementation that wrap a FLIP-27 source. */
+@Internal
+public class WrappedSource<T> implements Source<T> {
+    org.apache.flink.api.connector.source.Source<T, ?, ?> wrappedSource;
+
+    public WrappedSource(org.apache.flink.api.connector.source.Source<T, ?, ?> wrappedSource) {
+        this.wrappedSource = wrappedSource;
+    }
+
+    public org.apache.flink.api.connector.source.Source<T, ?, ?> getWrappedSource() {
+        return wrappedSource;
+    }
+}