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Tracing requests through a distributed system.

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package org.zalando.tracer.spring;

/*
 * ⁣
 * Tracer: Spring Boot Starter
 * ⁣⁣
 * Copyright (C) 2015 - 2016 Zalando SE
 * ⁣⁣
 * 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.
 * ⁣
 */

import org.springframework.core.task.TaskExecutor;
import org.zalando.tracer.Tracer;

final class TracerTaskExecutor implements TaskExecutor {

    private final Tracer tracer;
    private final TaskExecutor delegate;

    TracerTaskExecutor(final Tracer tracer, final TaskExecutor delegate) {
        this.tracer = tracer;
        this.delegate = delegate;
    }

    @Override
    public void execute(final Runnable task) {
        delegate.execute(tracer.preserve(task));
    }

}