Copyright 2019 Netflix, Inc.
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.
/**
 * Copyright 2019 Netflix, Inc.
 *
 * 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.netflix.concurrency.limits.limit.window;

import com.netflix.concurrency.limits.internal.Preconditions;

public class PercentileSampleWindowFactory implements SampleWindowFactory {
    private final double percentile;
    private final int windowSize;

    private PercentileSampleWindowFactory(double percentile, int windowSize) {
        this.percentile = percentile;
        this.windowSize = windowSize;
    }

    public static PercentileSampleWindowFactory of(double percentile, int windowSize) {
        Preconditions.checkArgument(percentile > 0 && percentile < 1.0, "Percentile should belong to (0, 1.0)");
        return new PercentileSampleWindowFactory(percentile, windowSize);
    }

    @Override
    public ImmutablePercentileSampleWindow newInstance() {
        return new ImmutablePercentileSampleWindow(percentile, windowSize);
    }
}