2 * ============LICENSE_START=======================================================
3 * dcaegen2-collectors-veshv
4 * ================================================================================
5 * Copyright (C) 2018 NOKIA
6 * ================================================================================
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 * ============LICENSE_END=========================================================
20 package org.onap.dcae.collectors.veshv.simulators.dcaeapp.impl
22 import arrow.effects.IO
23 import arrow.effects.fix
24 import arrow.effects.instances.io.monadError.monadError
25 import arrow.typeclasses.bindingCatch
26 import org.onap.dcae.collectors.veshv.domain.ByteData
27 import org.onap.dcae.collectors.veshv.domain.WireFrameMessage
28 import org.onap.dcae.collectors.veshv.utils.arrow.asIo
29 import org.onap.dcae.collectors.veshv.ves.message.generator.api.MessageGenerator
30 import org.onap.dcae.collectors.veshv.ves.message.generator.api.MessageParameters
31 import org.onap.dcae.collectors.veshv.ves.message.generator.api.MessageParametersParser
32 import org.onap.dcae.collectors.veshv.ves.message.generator.api.MessageType
33 import org.onap.ves.VesEventOuterClass
34 import java.io.InputStream
35 import javax.json.Json
37 class MessageStreamValidation(
38 private val messageGenerator: MessageGenerator,
39 private val messageParametersParser: MessageParametersParser = MessageParametersParser.INSTANCE) {
41 fun validate(jsonDescription: InputStream, consumedMessages: List<ByteArray>): IO<Boolean> =
42 IO.monadError().bindingCatch {
43 val messageParams = parseMessageParams(jsonDescription)
44 val expectedEvents = generateEvents(messageParams).bind()
45 val actualEvents = decodeConsumedEvents(consumedMessages)
46 if (shouldValidatePayloads(messageParams)) {
47 expectedEvents == actualEvents
49 validateHeaders(actualEvents, expectedEvents)
53 private fun parseMessageParams(input: InputStream): List<MessageParameters> {
54 val expectations = Json.createReader(input).readArray()
55 val messageParams = messageParametersParser.parse(expectations)
57 return messageParams.fold(
58 { throw IllegalArgumentException("Parsing error: " + it.message) },
61 throw IllegalArgumentException("Message param list cannot be empty")
67 private fun shouldValidatePayloads(parameters: List<MessageParameters>) =
68 parameters.all { it.messageType == MessageType.FIXED_PAYLOAD }
70 private fun validateHeaders(actual: List<VesEventOuterClass.VesEvent>,
71 expected: List<VesEventOuterClass.VesEvent>): Boolean {
72 val consumedHeaders = actual.map { it.commonEventHeader }
73 val generatedHeaders = expected.map { it.commonEventHeader }
74 return generatedHeaders == consumedHeaders
77 private fun generateEvents(parameters: List<MessageParameters>): IO<List<VesEventOuterClass.VesEvent>> =
78 messageGenerator.createMessageFlux(parameters)
79 .map(WireFrameMessage::payload)
80 .map(ByteData::unsafeAsArray)
81 .map(VesEventOuterClass.VesEvent::parseFrom)
85 private fun decodeConsumedEvents(consumedMessages: List<ByteArray>) =
86 consumedMessages.map(VesEventOuterClass.VesEvent::parseFrom)