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.ves.message.generator.impl
22 import com.google.protobuf.ByteString
23 import org.onap.dcae.collectors.veshv.domain.ByteData
24 import org.onap.dcae.collectors.veshv.domain.PayloadContentType
25 import org.onap.dcae.collectors.veshv.domain.WireFrameMessage
26 import org.onap.dcae.collectors.veshv.ves.message.generator.api.MessageGenerator
27 import org.onap.dcae.collectors.veshv.ves.message.generator.api.MessageParameters
28 import org.onap.dcae.collectors.veshv.ves.message.generator.api.MessageType
29 import org.onap.dcae.collectors.veshv.ves.message.generator.api.MessageType.FIXED_PAYLOAD
30 import org.onap.dcae.collectors.veshv.ves.message.generator.api.MessageType.INVALID_GPB_DATA
31 import org.onap.dcae.collectors.veshv.ves.message.generator.api.MessageType.INVALID_WIRE_FRAME
32 import org.onap.dcae.collectors.veshv.ves.message.generator.api.MessageType.TOO_BIG_PAYLOAD
33 import org.onap.dcae.collectors.veshv.ves.message.generator.api.MessageType.VALID
34 import org.onap.ves.VesEventOuterClass.CommonEventHeader
35 import org.onap.ves.VesEventOuterClass.VesEvent
36 import reactor.core.publisher.Flux
37 import reactor.core.publisher.Mono
38 import java.nio.charset.Charset
41 * @author Jakub Dudycz <jakub.dudycz@nokia.com>
44 class MessageGeneratorImpl internal constructor(
45 private val payloadGenerator: PayloadGenerator,
46 private val maxPayloadSizeBytes: Int
47 ) : MessageGenerator {
49 override fun createMessageFlux(messageParameters: List<MessageParameters>): Flux<WireFrameMessage> = Flux
50 .fromIterable(messageParameters)
51 .flatMap { createMessageFlux(it) }
53 private fun createMessageFlux(parameters: MessageParameters): Flux<WireFrameMessage> =
54 Mono.fromCallable { createMessage(parameters.commonEventHeader, parameters.messageType) }
57 parameters.amount < 0 ->
60 parameters.amount == 0L ->
61 // do not generate any message
64 // send original message and additional amount-1 messages
65 it.repeat(parameters.amount - 1)
69 private fun createMessage(commonEventHeader: CommonEventHeader, messageType: MessageType): WireFrameMessage =
72 WireFrameMessage(vesEvent(commonEventHeader, payloadGenerator.generatePayload()))
74 WireFrameMessage(vesEvent(commonEventHeader, oversizedPayload()))
76 WireFrameMessage(vesEvent(commonEventHeader, fixedPayload()))
77 INVALID_WIRE_FRAME -> {
78 val payload = ByteData(vesEvent(commonEventHeader, payloadGenerator.generatePayload()))
83 PayloadContentType.GOOGLE_PROTOCOL_BUFFER.hexValue,
87 WireFrameMessage("invalid vesEvent".toByteArray(Charset.defaultCharset()))
90 private fun vesEvent(commonEventHeader: CommonEventHeader, eventFields: ByteString): ByteArray {
91 return createVesEvent(commonEventHeader, eventFields).toByteArray()
94 private fun createVesEvent(commonEventHeader: CommonEventHeader, payload: ByteString): VesEvent =
96 .setCommonEventHeader(commonEventHeader)
97 .setEventFields(payload)
100 private fun oversizedPayload() =
101 payloadGenerator.generateRawPayload(maxPayloadSizeBytes + 1)
103 private fun fixedPayload() =
104 payloadGenerator.generateRawPayload(MessageGenerator.FIXED_PAYLOAD_SIZE)
107 private const val UNSUPPORTED_VERSION: Short = 2