| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.gearpump.akkastream.graph |
| |
| import akka.actor.ActorSystem |
| import akka.stream.impl.Stages.DefaultAttributes |
| import akka.stream.impl.StreamLayout.Module |
| import akka.stream.impl.{PublisherSource, SubscriberSink} |
| import akka.stream.{SinkShape, SourceShape} |
| import org.apache.gearpump.akkastream.GearpumpMaterializer.Edge |
| import org.apache.gearpump.akkastream.materializer.LocalMaterializerImpl |
| import org.apache.gearpump.akkastream.module.{SinkBridgeModule, SourceBridgeModule} |
| import org.apache.gearpump.util.Graph |
| import org.reactivestreams.{Publisher, Subscriber} |
| |
| /** |
| * |
| * [[LocalGraph]] is a [[SubGraph]] of the application DSL Graph, which only |
| * contain module that can be materialized in local JVM. |
| * |
| * @param graph Graph[Module, Edge] |
| */ |
| class LocalGraph(override val graph: Graph[Module, Edge]) extends SubGraph |
| |
| object LocalGraph { |
| |
| /** |
| * materialize LocalGraph in local JVM |
| * @param system ActorSystem |
| */ |
| class LocalGraphMaterializer(system: ActorSystem) extends SubGraphMaterializer { |
| |
| // create a local materializer |
| val materializer = LocalMaterializerImpl()(system) |
| |
| /** |
| * |
| * @param matValues Materialized Values for each module before materialization |
| * @return Materialized Values for each Module after the materialization. |
| */ |
| override def materialize(graph: SubGraph, |
| matValues: scala.collection.mutable.Map[Module, Any]): |
| scala.collection.mutable.Map[Module, Any] = { |
| val newGraph: Graph[Module, Edge] = graph.graph.mapVertex { |
| case source: SourceBridgeModule[in, out] => |
| val subscriber = matValues(source).asInstanceOf[Subscriber[in]] |
| val shape: SinkShape[in] = SinkShape(source.inPort) |
| new SubscriberSink(subscriber, DefaultAttributes.subscriberSink, shape) |
| case sink: SinkBridgeModule[in, out] => |
| val publisher = matValues(sink).asInstanceOf[Publisher[out]] |
| val shape: SourceShape[out] = SourceShape(sink.outPort) |
| new PublisherSource(publisher, DefaultAttributes.publisherSource, shape) |
| case other => |
| other |
| } |
| materializer.materialize(newGraph, matValues) |
| } |
| |
| override def shutdown: Unit = { |
| materializer.shutdown() |
| } |
| } |
| } |
| |