IcebergTableCacheValue.java

// 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
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// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.

package org.apache.doris.datasource.iceberg;

import org.apache.iceberg.Table;

import java.util.function.Supplier;

public class IcebergTableCacheValue {
    private final Table icebergTable;

    private volatile boolean snapshotCacheLoaded;
    private volatile IcebergSnapshotCacheValue snapshotCacheValue;

    public IcebergTableCacheValue(Table icebergTable) {
        this.icebergTable = icebergTable;
    }

    public Table getIcebergTable() {
        return icebergTable;
    }

    public IcebergSnapshotCacheValue getSnapshotCacheValue(Supplier<IcebergSnapshotCacheValue> loader) {
        if (!snapshotCacheLoaded) {
            synchronized (this) {
                if (!snapshotCacheLoaded) {
                    snapshotCacheValue = loader.get();
                    snapshotCacheLoaded = true;
                }
            }
        }
        return snapshotCacheValue;
    }
}