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Palantir open source project

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/*
 * (c) Copyright 2021 Palantir Technologies Inc. All rights reserved.
 *
 * 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 com.palantir.util;

import com.google.common.util.concurrent.RateLimiter;
import com.palantir.logsafe.logger.SafeLogger;
import java.util.function.Consumer;

@SuppressWarnings("UnstableApiUsage")
public class RateLimitedLogger {
    private final SafeLogger delegate;
    private final RateLimiter rateLimiter;

    public RateLimitedLogger(SafeLogger delegate, double permitsPerSecond) {
        this.delegate = delegate;
        this.rateLimiter = RateLimiter.create(permitsPerSecond);
    }

    public void log(Consumer loggingFunction) {
        if (rateLimiter.tryAcquire()) {
            loggingFunction.accept(delegate);
        }
    }
}