/*
 * 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.kafka.streams.state.internals;

import org.apache.kafka.streams.processor.StateStoreContext;
import org.apache.kafka.streams.processor.internals.ProcessorContextUtils;
import org.apache.kafka.streams.state.internals.metrics.RocksDBMetricsRecorder;

/**
 * Manages segments for time-ordered window stores with headers support.
 * <p>
 * Creates {@link WindowSegmentWithHeaders} instances which store values in the format
 * {@code [headers][value]} (without timestamp in value, as timestamp is in the key).
 *
 * @see WindowSegmentWithHeaders
 */
class WindowSegmentsWithHeaders extends AbstractSegments<WindowSegmentWithHeaders> {

    private final RocksDBMetricsRecorder metricsRecorder;

    WindowSegmentsWithHeaders(final String name,
                              final String metricsScope,
                              final long retentionPeriod,
                              final long segmentInterval) {
        super(name, retentionPeriod, segmentInterval);
        metricsRecorder = new RocksDBMetricsRecorder(metricsScope, name);
    }

    @Override
    protected WindowSegmentWithHeaders createSegment(final long segmentId, final String segmentName) {
        return new WindowSegmentWithHeaders(segmentName, name, segmentId, position, metricsRecorder);
    }

    @Override
    protected void openSegmentDB(final WindowSegmentWithHeaders segment, final StateStoreContext context) {
        segment.setTaskId(context.taskId());
        segment.openDB(context.appConfigs(), context.stateDir());
    }

    @Override
    public void openExisting(final StateStoreContext context, final long streamTime) {
        metricsRecorder.init(ProcessorContextUtils.metricsImpl(context), context.taskId());
        super.openExisting(context, streamTime);
    }
}
