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TS-2689: Structure mutation strategies
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denis.plotnikov
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Oct 4, 2024
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159 changes: 159 additions & 0 deletions
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src/main/kotlin/com/exactpro/th2/conn/dirty/fix/FIXMessageStructureMutator.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,159 @@ | ||
| /* | ||
| * Copyright 2024 Exactpro (Exactpro Systems Limited) | ||
| * | ||
| * 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.exactpro.th2.conn.dirty.fix | ||
|
|
||
| import io.netty.buffer.ByteBuf | ||
| import mu.KotlinLogging | ||
| import kotlin.text.Charsets.US_ASCII | ||
|
|
||
| enum class HeaderPosition { | ||
| INSIDE_BODY, | ||
| AFTER_BODY, | ||
| INSIDE_TRAILER, | ||
| AFTER_TRAILER | ||
| } | ||
|
|
||
| enum class TrailerPosition { | ||
| BEFORE_HEADER, | ||
| INSIDE_HEADER, | ||
| AFTER_HEADER, | ||
| INSIDE_BODY | ||
| } | ||
|
|
||
| class FIXMessageStructureMutator( | ||
| private val headerTags: Set<Int>, | ||
| private val trailerTags: Set<Int> | ||
| ) { | ||
|
|
||
| fun moveHeader(dst: HeaderPosition, message: ByteBuf): ByteBuf { | ||
| val condition: (FixField) -> Boolean = {headerTags.contains(it.tag)} | ||
|
|
||
| val field = when (dst) { | ||
| HeaderPosition.INSIDE_BODY -> getBodyFirstTag(message) | ||
| HeaderPosition.AFTER_BODY -> getBodyLastTag(message) | ||
| HeaderPosition.INSIDE_TRAILER -> getTrailerFirstTag(message) | ||
| HeaderPosition.AFTER_TRAILER -> getTrailerLastTag(message) | ||
| } | ||
|
|
||
| if (field?.tag == null) { | ||
| K_LOGGER.warn { "Move header operation failed. Not found position to insert for $dst in message: ${message.toString( | ||
| US_ASCII)}" } | ||
| return message | ||
| } | ||
|
|
||
| moveBlockAfter(field.tag!!, message, condition) | ||
| return message | ||
| } | ||
|
|
||
| fun moveTrailer(dst: TrailerPosition, message: ByteBuf): ByteBuf { | ||
| val condition: (FixField) -> Boolean = {trailerTags.contains(it.tag)} | ||
|
|
||
| val field = when(dst) { | ||
| TrailerPosition.BEFORE_HEADER -> getHeaderFirstTag(message) | ||
| TrailerPosition.INSIDE_HEADER -> getHeaderFirstTag(message) | ||
| TrailerPosition.AFTER_HEADER -> getHeaderLastTag(message) | ||
| TrailerPosition.INSIDE_BODY -> getBodyFirstTag(message) | ||
| } | ||
|
|
||
| if (field?.tag == null) { | ||
| K_LOGGER.warn { "Move trailer operation failed. Not found position to insert for $dst in message: ${message.toString( | ||
| US_ASCII)}" } | ||
| return message | ||
| } | ||
| if(dst == TrailerPosition.BEFORE_HEADER) { | ||
| moveBlockBefore(field.tag!!, message, condition) | ||
| } else { | ||
| moveBlockAfter(field.tag!!, message, condition) | ||
| } | ||
| return message | ||
| } | ||
|
|
||
| private fun moveBlockAfter(afterTag: Int, message: ByteBuf, condition: (FixField) -> Boolean) { | ||
| val toMove = mutableListOf<Pair<Int, String>>() | ||
| message.forEachField { | ||
| if(condition(it)) { | ||
| toMove.add(Pair(it.tag!!, it.value!!)) | ||
| it.clear() | ||
| } | ||
| } | ||
|
|
||
| val afterField = message.findField(afterTag) | ||
|
|
||
| if (afterField == null) { | ||
| K_LOGGER.warn { "Something went wrong while moving block. Tag $afterTag is missing from message. Impossible to move block." } | ||
| return | ||
| } | ||
|
|
||
| var previous: FixField = afterField | ||
| toMove.forEach { | ||
| previous = previous.insertNext(it.first, it.second) | ||
| } | ||
| } | ||
|
|
||
| private fun moveBlockBefore(beforeTag: Int, message: ByteBuf, condition: (FixField) -> Boolean) { | ||
| val toMove = mutableListOf<Pair<Int, String>>() | ||
| message.forEachField { | ||
| if(condition(it)) { | ||
| toMove.add(0, Pair(it.tag!!, it.value!!)) | ||
| it.clear() | ||
| } | ||
| } | ||
|
|
||
| val afterField = message.findField(beforeTag) | ||
|
|
||
| if (afterField == null) { | ||
| K_LOGGER.warn { "Something went wrong while moving block. Tag $beforeTag is missing from message. Impossible to move block." } | ||
| return | ||
| } | ||
|
|
||
| var previous: FixField = afterField | ||
| toMove.forEach { | ||
| previous = previous.insertPrevious(it.first, it.second) | ||
| } | ||
| } | ||
|
|
||
| private fun getBodyFirstTag(message: ByteBuf): FixField? = findFirstTag(message) { !headerTags.contains(it.tag) } | ||
| private fun getBodyLastTag(message: ByteBuf): FixField? = findLastTag(message) { !headerTags.contains(it.tag) && !trailerTags.contains(it.tag) } | ||
|
|
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| private fun getTrailerFirstTag(message: ByteBuf): FixField? = findFirstTag(message) { trailerTags.contains(it.tag) } | ||
| private fun getTrailerLastTag(message: ByteBuf): FixField? = findLastTag(message) { trailerTags.contains(it.tag) } | ||
|
|
||
| private fun getHeaderFirstTag(message: ByteBuf): FixField? = findFirstTag(message) { headerTags.contains(it.tag) } | ||
| private fun getHeaderLastTag(message: ByteBuf): FixField? = findLastTag(message) { headerTags.contains(it.tag) } | ||
|
|
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| private fun findFirstTag(message: ByteBuf, condition: (FixField) -> Boolean): FixField? { | ||
| message.forEachField { | ||
| if(condition(it)) { | ||
| return it | ||
| } | ||
| } | ||
| return null | ||
| } | ||
|
|
||
| private fun findLastTag(message: ByteBuf, condition: (FixField) -> Boolean): FixField? { | ||
| var lastField: FixField? = null | ||
| message.forEachField { | ||
| if(condition(it)) { | ||
| lastField = it | ||
| } | ||
| } | ||
| return lastField | ||
| } | ||
|
|
||
| companion object { | ||
| val K_LOGGER = KotlinLogging.logger { } | ||
| } | ||
| } |
23 changes: 23 additions & 0 deletions
23
...om/exactpro/th2/conn/dirty/fix/brokenconn/configuration/AdjustSendingTimeConfiguration.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,23 @@ | ||
| /* | ||
| * Copyright 2024 Exactpro (Exactpro Systems Limited) | ||
| * | ||
| * 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.exactpro.th2.conn.dirty.fix.brokenconn.configuration | ||
|
|
||
| import java.time.Duration | ||
|
|
||
| data class AdjustSendingTimeConfiguration( | ||
| val adjustDuration: Duration, | ||
| val substract: Boolean = false | ||
| ) |
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