dorkbox.network.rmi.messages.MethodRequestSerializer.kt Maven / Gradle / Ivy
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Encrypted, high-performance, and event-driven/reactive network stack for Java 6+
/*
* Copyright 2020 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
*
* 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 (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
* disclaimer in the documentation and/or other materials provided with the distribution.
* - Neither the name of Esoteric Software nor the names of its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
* SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package dorkbox.network.rmi.messages
import com.esotericsoftware.kryo.Kryo
import com.esotericsoftware.kryo.KryoException
import com.esotericsoftware.kryo.Serializer
import com.esotericsoftware.kryo.io.Input
import com.esotericsoftware.kryo.io.Output
import dorkbox.network.connection.Connection
import dorkbox.network.rmi.CachedMethod
import dorkbox.network.rmi.RmiUtils
import dorkbox.network.serialization.KryoExtra
import org.agrona.collections.Int2ObjectHashMap
import java.lang.reflect.Method
/**
* Internal message to invoke methods remotely.
*/
@Suppress("ConstantConditionIf")
class MethodRequestSerializer(private val methodCache: Int2ObjectHashMap>) : Serializer() {
override fun write(kryo: Kryo, output: Output, methodRequest: MethodRequest) {
val method = methodRequest.cachedMethod
// we pack objectId + responseId into the same "int", since they are both really shorts (but are represented as ints to make
// working with them a lot easier
output.writeInt(methodRequest.packedId)
output.writeInt(RmiUtils.packShorts(method.methodClassId, method.methodIndex), true)
output.writeBoolean(methodRequest.isGlobal)
val serializers = method.serializers
if (serializers.isNotEmpty()) {
val args = methodRequest.args!!
serializers.forEachIndexed { index, serializer ->
if (serializer != null) {
kryo.writeObjectOrNull(output, args[index], serializer)
} else {
kryo.writeClassAndObject(output, args[index])
}
}
}
}
@Suppress("UNCHECKED_CAST")
override fun read(kryo: Kryo, input: Input, type: Class): MethodRequest {
val packedId = input.readInt()
val methodInfo = input.readInt(true)
val methodClassId = RmiUtils.unpackLeft(methodInfo)
val methodIndex = RmiUtils.unpackRight(methodInfo)
val isGlobal = input.readBoolean()
kryo as KryoExtra
val cachedMethod = try {
methodCache[methodClassId][methodIndex]
} catch (ex: Exception) {
val methodClass = kryo.getRegistration(methodClassId).type
throw KryoException("Invalid method index " + methodIndex + " for class: " + methodClass.name)
}
val args: Array
val serializers = cachedMethod.serializers
val method: Method
val argStartIndex: Int
if (cachedMethod.overriddenMethod != null) {
// did we override our cached method? This is not common.
method = cachedMethod.overriddenMethod!!
// this is specifically when we override an interface method, with an implementation method + Connection parameter (@ index 0)
argStartIndex = 1
args = arrayOfNulls(serializers.size + 1) as Array
// we have to save the connection this happened on, so it can be part of the method invocation
args[0] = kryo.connection
} else {
method = cachedMethod.method
argStartIndex = 0
args = arrayOfNulls(serializers.size) as Array
}
val parameterTypes = method.parameterTypes
var isCoroutine = false
// we don't start at 0 for the arguments, in case we have an overwritten method, in which case, the 1st arg is always "Connection.class"
var index = 0
val size = serializers.size
var argStart = argStartIndex
while (index < size) {
val serializer = serializers[index]
if (serializer != null) {
if (serializer is ContinuationSerializer) {
isCoroutine = true
// have to check if it's a coroutine or not!
args[argStart] = ContinuationSerializer::class.java
} else {
args[argStart] = kryo.readObjectOrNull(input, parameterTypes[index], serializer)
}
} else {
args[argStart] = kryo.readClassAndObject(input)
}
index++
argStart++
}
val invokeMethod = MethodRequest()
invokeMethod.isGlobal = isGlobal
invokeMethod.isCoroutine = isCoroutine
invokeMethod.packedId = packedId
invokeMethod.cachedMethod = cachedMethod
invokeMethod.args = args
return invokeMethod
}
}