Add service class to run service

src/main/kotlin/App.kt

@@ -19,34 +19,14 @@
 package org.memobase
 
 import kotlin.system.exitProcess
-import org.apache.kafka.streams.KafkaStreams
 import org.apache.logging.log4j.LogManager
-import org.memobase.settings.SettingsLoader
 
 class App {
     companion object {
-        private val log = LogManager.getLogger("TableDataTransform")
+        private val log = LogManager.getLogger("TableDataTransformApp")
         @JvmStatic fun main(args: Array<String>) {
             try {
-                val settings = SettingsLoader(
-                    listOf(
-                        "sheet",
-                        "header.count",
-                        "header.line",
-                        "identifier"
-                    ),
-                    useStreamsConfig = true,
-                    readSftpSettings = true
-                )
-                val topology = KafkaTopology(settings).build()
-                val stream = KafkaStreams(topology, settings.kafkaStreamsSettings)
-
-                stream.use {
-                    it.start()
-                    while (stream.state().isRunning) {
-                        Thread.sleep(10_000L)
-                    }
-                }
+                Service().run()
             } catch (ex: Exception) {
                 ex.printStackTrace()
                 log.error("Stopping application due to error: " + ex.message)

src/main/kotlin/Service.kt

+/*
+ * Table Data Import Service
+ * Copyright (C) 2020 Memoriav
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package org.memobase
+
+import org.apache.kafka.streams.KafkaStreams
+import org.apache.logging.log4j.LogManager
+import org.memobase.settings.SettingsLoader
+
+class Service(file: String = "app.yml") {
+    private val log = LogManager.getLogger("TableDataService")
+
+    val settings = SettingsLoader(
+        listOf(
+            "sheet",
+            "header.count",
+            "header.line",
+            "identifier"
+        ),
+        file,
+        useStreamsConfig = true,
+        readSftpSettings = true
+    )
+
+    val topology = KafkaTopology(settings).build()
+    private val stream = KafkaStreams(topology, settings.kafkaStreamsSettings)
+
+    fun run() {
+        stream.use {
+            it.start()
+            while (stream.state().isRunning) {
+                log.info("Service is running.")
+                Thread.sleep(10_000L)
+            }
+        }
+    }
+}