2 * ============LICENSE_START=======================================================
3 * dcaegen2-collectors-veshv
4 * ================================================================================
5 * Copyright (C) 2018-2019 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.config.api.model
22 import arrow.core.Option
23 import org.onap.dcae.collectors.veshv.domain.RoutedMessage
24 import org.onap.dcae.collectors.veshv.domain.VesMessage
25 import org.onap.ves.VesEventOuterClass.CommonEventHeader
27 data class Routing(val routes: List<Route>) {
29 fun routeFor(commonHeader: CommonEventHeader): Option<Route> =
30 Option.fromNullable(routes.find { it.applies(commonHeader) })
33 data class Route(val domain: String, val targetTopic: String, val partitioning: (CommonEventHeader) -> Int = { 0 }) {
35 fun applies(commonHeader: CommonEventHeader) = commonHeader.domain == domain
37 operator fun invoke(message: VesMessage): RoutedMessage =
38 RoutedMessage(targetTopic, partitioning(message.header), message)
43 HvVesConfiguration DSL
46 fun routing(init: RoutingBuilder.() -> Unit): RoutingBuilder = RoutingBuilder().apply(init)
48 class RoutingBuilder {
49 private val routes: MutableList<RouteBuilder> = mutableListOf()
51 fun defineRoute(init: RouteBuilder.() -> Unit): RouteBuilder = RouteBuilder()
53 .also { routes.add(it) }
55 fun build() = Routing(routes.map { it.build() }.toList())
60 private lateinit var domain: String
61 private lateinit var targetTopic: String
62 private lateinit var partitioning: (CommonEventHeader) -> Int
64 fun fromDomain(domain: String): RouteBuilder = apply {
68 fun toTopic(targetTopic: String): RouteBuilder = apply {
69 this.targetTopic = targetTopic
72 fun withFixedPartitioning(num: Int = 0): RouteBuilder = apply {
73 partitioning = { num }
76 fun build() = Route(domain, targetTopic, partitioning)