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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.runtime.entrypoint;

import org.apache.flink.configuration.Configuration;
import org.apache.flink.configuration.ConfigurationUtils;
import org.apache.flink.configuration.JobManagerOptions;
import org.apache.flink.runtime.dispatcher.ExecutionGraphInfoStore;
import org.apache.flink.runtime.dispatcher.FileExecutionGraphInfoStore;
import org.apache.flink.runtime.dispatcher.MemoryExecutionGraphInfoStore;
import org.apache.flink.util.concurrent.ScheduledExecutor;

import org.apache.flink.shaded.guava32.com.google.common.base.Ticker;

import java.io.File;
import java.io.IOException;
import java.time.Duration;

/** Base class for session cluster entry points. */
public abstract class SessionClusterEntrypoint extends ClusterEntrypoint {

    public SessionClusterEntrypoint(Configuration configuration) {
        super(configuration);
    }

    @Override
    protected ExecutionGraphInfoStore createSerializableExecutionGraphStore(
            Configuration configuration, ScheduledExecutor scheduledExecutor) throws IOException {
        final JobManagerOptions.JobStoreType jobStoreType =
                configuration.get(JobManagerOptions.JOB_STORE_TYPE);
        final Duration expirationTime =
                Duration.ofSeconds(configuration.get(JobManagerOptions.JOB_STORE_EXPIRATION_TIME));
        final int maximumCapacity = configuration.get(JobManagerOptions.JOB_STORE_MAX_CAPACITY);

        switch (jobStoreType) {
            case File:
                {
                    final File tmpDir =
                            new File(ConfigurationUtils.parseTempDirectories(configuration)[0]);
                    final long maximumCacheSizeBytes =
                            configuration.get(JobManagerOptions.JOB_STORE_CACHE_SIZE);

                    return new FileExecutionGraphInfoStore(
                            tmpDir,
                            expirationTime,
                            maximumCapacity,
                            maximumCacheSizeBytes,
                            scheduledExecutor,
                            Ticker.systemTicker());
                }
            case Memory:
                {
                    return new MemoryExecutionGraphInfoStore(
                            expirationTime,
                            maximumCapacity,
                            scheduledExecutor,
                            Ticker.systemTicker());
                }
            default:
                {
                    throw new IllegalArgumentException(
                            "Unsupported job store type " + jobStoreType);
                }
        }
    }
}