lab.mage.spring.cassandra.connector.util.TenantContextHolder.java Source code

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Here is the source code for lab.mage.spring.cassandra.connector.util.TenantContextHolder.java

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/*
 * Copyright 2016 Markus Geiss.
 *
 * 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 lab.mage.spring.cassandra.connector.util;

import org.springframework.util.Assert;

import javax.annotation.Nonnull;
import java.util.Optional;

public class TenantContextHolder {

    private static final InheritableThreadLocal<String> THREAD_LOCAL = new InheritableThreadLocal<>();

    private TenantContextHolder() {
        super();
    }

    @Nonnull
    public static Optional<String> getIdentifier() {
        return Optional.ofNullable(TenantContextHolder.THREAD_LOCAL.get());
    }

    public static void setIdentifier(@Nonnull final String identifier) {
        Assert.notNull(identifier, "A tenant identifier must be given!");
        TenantContextHolder.THREAD_LOCAL.set(identifier);
    }

    public static void clear() {
        TenantContextHolder.THREAD_LOCAL.remove();
    }
}