modules/core/src/test/java/org/apache/ignite/failure/TestFailureHandler.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 org.apache.ignite.failure;

import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import org.apache.ignite.Ignite;

/**
 * Test failure handler implementation
 */
public class TestFailureHandler extends AbstractFailureHandler {
    /** Invalidate. */
    private final boolean invalidate;

    /** Latch. */
    private final CountDownLatch latch;

    /** Failure context. */
    volatile FailureContext failureCtx;

    /**
     * @param invalidate Invalidate.
     */
    public TestFailureHandler(boolean invalidate) {
        this(invalidate, new CountDownLatch(1));
    }

    /**
     * @param invalidate Invalidate.
     * @param latch Latch.
     */
    public TestFailureHandler(boolean invalidate, CountDownLatch latch) {
        this.invalidate = invalidate;
        this.latch = latch;
    }

    /** {@inheritDoc} */
    @Override protected boolean handle(Ignite ignite, FailureContext failureCtx) {
        if (this.failureCtx == null) {
            this.failureCtx = failureCtx;

            if (latch != null)
                latch.countDown();

            ignite.log().warning("Handled ignite failure: " + failureCtx);
        }

        return invalidate;
    }

    /**
     * @return Failure context.
     */
    public FailureContext failureContext() {
        return failureCtx;
    }

    /**
     * @param millis Millis.

     * @return Failure context.
     */
    public FailureContext awaitFailure(long millis) throws InterruptedException {
        latch.await(millis, TimeUnit.MILLISECONDS);

        return failureCtx;
    }
}