Network/test/dorkboxTest/network/rmi/RmiDuplicateObjectTest.kt

/*
 * Copyright 2023 dorkbox, llc
 *
 * 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
 *
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 * 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
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/*
 * Copyright (c) 2008, Nathan Sweet
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following
 * conditions are met:
 *
 * - Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following
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package dorkboxTest.network.rmi

import dorkbox.netUtil.IPv4
import dorkbox.netUtil.IPv6
import dorkbox.network.Client
import dorkbox.network.Configuration
import dorkbox.network.Server
import dorkbox.network.connection.Connection
import dorkboxTest.network.BaseTest
import dorkboxTest.network.rmi.cows.MessageWithTestCow
import dorkboxTest.network.rmi.cows.TestCow
import dorkboxTest.network.rmi.cows.TestCowImpl
import org.junit.Assert
import org.junit.Test
import java.util.concurrent.*

class RmiDuplicateObjectTest : BaseTest() {
    @Test
    fun rmiIPv4NetworkConnection() {
        rmi(isIpv4 = true, isIpv6 = false)
    }

    @Test
    fun rmiIPv6NetworkConnection() {
        rmi(isIpv4 = false, isIpv6 = true)
    }

    @Test
    fun rmiBothIPv4ConnectNetworkConnection() {
        rmi(isIpv4 = true, isIpv6 = true)
    }


    @Test
    fun rmiBothIPv6ConnectNetworkConnection() {
        rmi(isIpv4 = true, isIpv6 = true, runIpv4Connect = true)
    }

    @Test
    fun rmiIpcNetworkConnection() {
        rmi {
            enableIpc = true
        }
    }

    private fun doConnect(isIpv4: Boolean, isIpv6: Boolean, runIpv4Connect: Boolean, client: Client<Connection>) {
        when {
            isIpv4 && isIpv6 && runIpv4Connect -> client.connect(IPv4.LOCALHOST, 2000)
            isIpv4 && isIpv6 && !runIpv4Connect -> client.connect(IPv6.LOCALHOST, 2000)
            isIpv4 -> client.connect(IPv4.LOCALHOST, 2000)
            isIpv6 -> client.connect(IPv6.LOCALHOST, 2000)
            else -> client.connect(IPv4.LOCALHOST, 2000)
        }
    }

    fun rmi(isIpv4: Boolean = false, isIpv6: Boolean = false, runIpv4Connect: Boolean = true, config: Configuration.() -> Unit = {}) {
        val objs = mutableSetOf<Int>()
        val latch = CountDownLatch(2)

        val server = run {
            val configuration = serverConfig()
            configuration.enableIPv4 = isIpv4
            configuration.enableIPv6 = isIpv6
            config(configuration)

            configuration.serialization.rmi.register(TestCow::class.java, TestCowImpl::class.java)
            configuration.serialization.register(MessageWithTestCow::class.java)
            configuration.serialization.register(UnsupportedOperationException::class.java)


            val server = Server<Connection>(configuration)
            addEndPoint(server)


            server.onConnect {
                logger.warn("Starting to moo")
                // these are on separate threads (client.init) and this -- there can be race conditions, where the object doesn't exist yet!
                val testCow = rmi.get<TestCow>(4)
                testCow.moo()

                synchronized(objs) {
                    objs.add(testCow.id())
                }
                latch.countDown()
            }

            server
        }

        val client1 = run {
            val configuration = clientConfig()
            config(configuration)

            val client = Client<Connection>(configuration)
            addEndPoint(client)

            client.onInit {
                logger.warn("Initializing moo 4")
                rmi.save(TestCowImpl(4), 4)
            }

            client
        }

        val client2 = run {
            val configuration = clientConfig()
            config(configuration)

            val client = Client<Connection>(configuration)
            addEndPoint(client)


            client.onInit {
                logger.warn("Initializing moo 5")
                rmi.save(TestCowImpl(5), 4) // both are saved as ID 4 (but internally are 4 and 5)
            }

            client
        }


        server.bind(2000)
        doConnect(isIpv4, isIpv6, runIpv4Connect, client1)
        doConnect(isIpv4, isIpv6, runIpv4Connect, client2)

        latch.await()
        stopEndPoints()
        waitForThreads()

        val actual = synchronized(objs) {
            objs.joinToString()
        }

        Assert.assertEquals("4, 5", actual)
    }
}