com.dyngr.core.strategy.StopAfterAttemptStrategy Maven / Gradle / Ivy

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A missing polling library for Java.

There is a newer version: 1.1.3

/*
 * Copyright 2012-2015 Ye Ding
 *
 * 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.dyngr.core.strategy;

import com.dyngr.core.Attempt;
import com.dyngr.core.StopStrategy;
import com.dyngr.util.Preconditions;

/**
 * A stop strategy which stops after N failed attempts.
 *
 * Created by dingye.
 */
public class StopAfterAttemptStrategy implements StopStrategy {
    private final int maxAttemptNumber;

    public StopAfterAttemptStrategy(int maxAttemptNumber) {
        Preconditions.checkArgument(maxAttemptNumber >= 1, "maxAttemptNumber must be >= 1 but is %d", maxAttemptNumber);
        this.maxAttemptNumber = maxAttemptNumber;
    }

    @Override
    public boolean shouldStop(Attempt failedAttempt) {
        return failedAttempt.getAttemptNumber() >= maxAttemptNumber;
    }
}