com.sap.cloud.mt.subscription.TenantMutexFactory Maven / Gradle / Ivy

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/******************************************************************************
 * © 2020 SAP SE or an SAP affiliate company. All rights reserved.            *
 ******************************************************************************/

package com.sap.cloud.mt.subscription;

import java.util.concurrent.ConcurrentHashMap;

public class TenantMutexFactory {
    private static final ConcurrentHashMap tenantToMutex = new ConcurrentHashMap<>();

    private TenantMutexFactory() {
    }

    public static TenantMutex get(String tenantId) {
        TenantMutex mutex = tenantToMutex.get(tenantId);
        if (mutex != null) {
            return mutex;
        }
        TenantMutex newMutex = new TenantMutex();
        TenantMutex storedMutex = tenantToMutex.putIfAbsent(tenantId, newMutex);
        if (storedMutex != null) {
            return storedMutex;
        } else {
            return newMutex;
        }
    }
}