org.apache.flink.connector.base.source.hybrid.SwitchedSources Maven / Gradle / Ivy
/*
* 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.connector.base.source.hybrid;
import org.apache.flink.api.connector.source.Source;
import org.apache.flink.api.connector.source.SourceSplit;
import org.apache.flink.core.io.SimpleVersionedSerializer;
import org.apache.flink.util.Preconditions;
import java.util.HashMap;
import java.util.Map;
/** Sources that participated in switching with cached serializers. */
class SwitchedSources {
private final Map sources = new HashMap<>();
private final Map> cachedSerializers =
new HashMap<>();
public Source sourceOf(int sourceIndex) {
return Preconditions.checkNotNull(
sources.get(sourceIndex), "Source for index=%s not available", sourceIndex);
}
public SimpleVersionedSerializer serializerOf(int sourceIndex) {
return cachedSerializers.computeIfAbsent(
sourceIndex, (k -> sourceOf(k).getSplitSerializer()));
}
public void put(int sourceIndex, Source source) {
sources.put(sourceIndex, Preconditions.checkNotNull(source));
}
}