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/*
 * Copyright 2023 Ververica Inc.
 *
 * 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
 *
 *     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 com.ververica.cdc.connectors.utils;

import org.apache.flink.streaming.api.functions.source.SourceFunction;
import org.apache.flink.streaming.api.watermark.Watermark;
import org.apache.flink.streaming.runtime.streamrecord.StreamRecord;

import java.util.concurrent.LinkedBlockingQueue;

/** A testable {@link SourceFunction.SourceContext}. */
public class TestSourceContext implements SourceFunction.SourceContext {

    private final Object checkpointLock = new Object();

    private LinkedBlockingQueue> collectedOutputs = new LinkedBlockingQueue<>();

    @Override
    public void collect(T element) {
        this.collectedOutputs.add(new StreamRecord<>(element));
    }

    @Override
    public void collectWithTimestamp(T element, long timestamp) {
        this.collectedOutputs.offer(new StreamRecord<>(element, timestamp));
    }

    @Override
    public void emitWatermark(Watermark mark) {
        throw new UnsupportedOperationException();
    }

    @Override
    public void markAsTemporarilyIdle() {}

    @Override
    public Object getCheckpointLock() {
        return checkpointLock;
    }

    @Override
    public void close() {}

    public StreamRecord removeLatestOutput() {
        return collectedOutputs.poll();
    }

    public LinkedBlockingQueue> getCollectedOutputs() {
        return collectedOutputs;
    }
}