1 files changed, 85 insertions, 0 deletions
diff --git a/sources/hv-collector-configuration/src/main/kotlin/org/onap/dcae/collectors/veshv/config/api/model/routing.kt b/sources/hv-collector-configuration/src/main/kotlin/org/onap/dcae/collectors/veshv/config/api/model/routing.kt
new file mode 100644
index 00000000..847f35ad
--- /dev/null
+++ b/sources/hv-collector-configuration/src/main/kotlin/org/onap/dcae/collectors/veshv/config/api/model/routing.kt
@@ -0,0 +1,85 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * 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.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.config.api.model
+
+import arrow.core.Option
+import org.onap.dcae.collectors.veshv.domain.RoutedMessage
+import org.onap.dcae.collectors.veshv.domain.VesMessage
+import org.onap.ves.VesEventOuterClass.CommonEventHeader
+
+data class Routing(val routes: List<Route>) {
+
+    fun routeFor(commonHeader: CommonEventHeader): Option<Route> =
+            Option.fromNullable(routes.find { it.applies(commonHeader) })
+}
+
+data class Route(val domain: String, val targetTopic: String, val partitioning: (CommonEventHeader) -> Int = {0}) {
+
+    fun applies(commonHeader: CommonEventHeader) = commonHeader.domain == domain
+
+    operator fun invoke(message: VesMessage): RoutedMessage =
+            RoutedMessage(targetTopic, partitioning(message.header), message)
+}
+
+
+/*
+Configuration DSL
+ */
+
+fun routing(init: RoutingBuilder.() -> Unit): RoutingBuilder {
+    val conf = RoutingBuilder()
+    conf.init()
+    return conf
+}
+
+class RoutingBuilder {
+    private val routes: MutableList<RouteBuilder> = mutableListOf()
+
+    fun defineRoute(init: RouteBuilder.() -> Unit): RouteBuilder {
+        val rule = RouteBuilder()
+        rule.init()
+        routes.add(rule)
+        return rule
+    }
+
+    fun build() = Routing(routes.map { it.build() }.toList())
+}
+
+class RouteBuilder {
+
+    private lateinit var domain: String
+    private lateinit var targetTopic: String
+    private lateinit var partitioning: (CommonEventHeader) -> Int
+
+    fun fromDomain(domain: String) : RouteBuilder = apply {
+        this.domain = domain
+    }
+
+    fun toTopic(targetTopic: String) : RouteBuilder = apply {
+        this.targetTopic = targetTopic
+    }
+
+    fun withFixedPartitioning(num: Int = 0) : RouteBuilder = apply {
+        partitioning = { num }
+    }
+
+    fun build() = Route(domain, targetTopic, partitioning)
+
+}