/*
 * 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.internal;

import java.util.ArrayList;
import java.util.concurrent.atomic.AtomicLong;
import org.apache.ignite.GridTestTask;
import org.apache.ignite.Ignite;
import org.apache.ignite.IgniteCompute;
import org.apache.ignite.IgniteDeploymentException;
import org.apache.ignite.compute.ComputeJobContext;
import org.apache.ignite.compute.ComputeTaskFuture;
import org.apache.ignite.configuration.IgniteConfiguration;
import org.apache.ignite.internal.util.typedef.internal.U;
import org.apache.ignite.lang.IgniteCallable;
import org.apache.ignite.lang.IgniteFuture;
import org.apache.ignite.lang.IgniteUuid;
import org.apache.ignite.resources.JobContextResource;
import org.apache.ignite.testframework.junits.common.GridCommonAbstractTest;
import org.apache.ignite.testframework.junits.common.GridCommonTest;
import org.junit.Test;

/**
 * Task execution test.
 */
@GridCommonTest(group = "Kernal Self")
public class GridTaskExecutionSelfTest extends GridCommonAbstractTest {
    /** Grid instance. */
    private Ignite ignite;

    /** */
    public GridTaskExecutionSelfTest() {
        super(false);
    }

    /** */
    protected boolean peerClassLoadingEnabled() {
        return true;
    }

    /** {@inheritDoc} */
    @Override protected IgniteConfiguration getConfiguration(String igniteInstanceName) throws Exception {
        IgniteConfiguration cfg = super.getConfiguration(igniteInstanceName);

        cfg.setPeerClassLoadingEnabled(peerClassLoadingEnabled());

        return cfg;
    }

    /** {@inheritDoc} */
    @Override protected void beforeTestsStarted() throws Exception {
        startGrid(1);
        startGrid(2);
        startGrid(3);
    }

    /**
     *  {@inheritDoc}
     */
    @Override protected void beforeTest() throws Exception {
        ignite = grid(1);
    }

    /**
     * @throws Exception If failed.
     */
    @Test
    public void testSynchronousExecute() throws Exception {
        ComputeTaskFuture<?> fut = ignite.compute().executeAsync(GridTestTask.class, "testArg");

        assert fut != null;

        info("Task result: " + fut.get());
    }

    /**
     * Test for https://issues.apache.org/jira/browse/IGNITE-1384
     *
     * @throws Exception If failed.
     */
    @Test
    public void testJobIdCollision() throws Exception {
        fail("Test refactoring is needed: https://issues.apache.org/jira/browse/IGNITE-4706");

        long locId = IgniteUuid.lastLocalId();

        ArrayList<IgniteFuture<Object>> futs = new ArrayList<>(2016);

        IgniteCompute compute = grid(1).compute(grid(1).cluster().forNodeId(grid(3).localNode().id()));

        for (int i = 0; i < 1000; i++) {
            futs.add(compute.callAsync(new IgniteCallable<Object>() {
                @JobContextResource
                ComputeJobContext ctx;

                boolean held;

                @Override public Object call() throws Exception {
                    if (!held) {
                        ctx.holdcc(1000);

                        held = true;
                    }

                    return null;
                }
            }));
        }

        info("Finished first loop.");

        AtomicLong idx = U.field(IgniteUuid.class, "cntGen");

        idx.set(locId);

        IgniteCompute compute1 = grid(2).compute(grid(2).cluster().forNodeId(grid(3).localNode().id()));

        for (int i = 0; i < 100; i++) {
            futs.add(compute1.callAsync(new IgniteCallable<Object>() {
                @JobContextResource
                ComputeJobContext ctx;

                boolean held;

                @Override public Object call() throws Exception {
                    if (!held) {
                        ctx.holdcc(1000);

                        held = true;
                    }

                    return null;
                }
            }));
        }

        for (IgniteFuture<Object> fut : futs)
            fut.get();
    }

    /**
     * Test execution of non-existing task by name IGNITE-4838.
     *
     * @throws Exception If failed.
     */
    @Test
    public void testExecuteTaskWithInvalidName() throws Exception {
        try {
            ComputeTaskFuture<?> fut = ignite.compute().execute("invalid.task.name", null);

            fut.get();

            assert false : "Should never be reached due to exception thrown.";
        }
        catch (IgniteDeploymentException e) {
            info("Received correct exception: " + e);
        }
    }
}