First runnable service

pom.xml

@@ -0,0 +1,78 @@
+<project>
+    <modelVersion>4.0.0</modelVersion>
+    <groupId>com.github.statnett</groupId>
+    <artifactId>load-flow-service</artifactId>
+    <version>0.0.0</version>
+    <properties>
+        <kotlin.version>1.9.10</kotlin.version>
+        <ktor.version>2.3.4</ktor.version>
+        <main.class>com.github.statnett.loadflowservice.AppKt</main.class>
+    </properties>
+
+    <repositories>
+        <repository>
+            <id>ktor-eap</id>
+            <url>https://maven.pkg.jetbrains.space/public/p/ktor/eap</url>
+        </repository>
+    </repositories>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.jetbrains.kotlin</groupId>
+            <artifactId>kotlin-stdlib</artifactId>
+            <version>${kotlin.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.powsybl</groupId>
+            <artifactId>powsybl-starter</artifactId>
+            <version>2023.2.4</version>
+        </dependency>
+
+        <dependency>
+            <groupId>io.ktor</groupId>
+            <artifactId>ktor-server-core-jvm</artifactId>
+            <version>${ktor.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>io.ktor</groupId>
+            <artifactId>ktor-server-netty-jvm</artifactId>
+            <version>${ktor.version}</version>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <sourceDirectory>${project.basedir}/src/main</sourceDirectory>
+        <testSourceDirectory>${project.basedir}/src/test</testSourceDirectory>
+        <plugins>
+            <plugin>
+                <groupId>org.jetbrains.kotlin</groupId>
+                <artifactId>kotlin-maven-plugin</artifactId>
+                <version>${kotlin.version}</version>
+
+                <extensions>true</extensions>
+            </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-assembly-plugin</artifactId>
+                <version>3.6.0</version>
+                <executions>
+                    <execution>
+                        <id>make-assembly</id>
+                        <phase>package</phase>
+                        <goals> <goal>single</goal> </goals>
+                        <configuration>
+                            <archive>
+                                <manifest>
+                                    <mainClass>${main.class}</mainClass>
+                                </manifest>
+                            </archive>
+                            <descriptorRefs>
+                                <descriptorRef>jar-with-dependencies</descriptorRef>
+                            </descriptorRefs>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+</project>

src/main/app.kt

@@ -0,0 +1,17 @@
+package com.github.statnett.loadflowservice
+
+import io.ktor.server.application.*
+import io.ktor.server.response.*
+import io.ktor.server.routing.*
+import io.ktor.server.engine.*
+import io.ktor.server.netty.*
+
+fun main() {
+    embeddedServer(Netty, port = 8080) {
+        routing {
+            get("/") {
+                call.respondText("Hello, world!")
+            }
+        }
+    }.start(wait = true)
+}

src/main/solver.kt

@@ -0,0 +1,14 @@
+package com.github.statnett.loadflowservice
+
+import com.powsybl.iidm.network.Network
+import com.powsybl.loadflow.LoadFlowParameters
+import com.powsybl.loadflow.LoadFlow
+import java.io.InputStream
+
+fun networkFromStream(fname: String, content: InputStream): Network {
+    return Network.read(fname, content)
+} 
+
+fun solve(network: Network, parameters: LoadFlowParameters) {
+    LoadFlow.run(network, parameters);
+}