[DCAE] INFO.yaml update

[dcaegen2/collectors/hv-ves.git] / sources / hv-collector-utils / src / main / kotlin / org / onap / dcae / collectors / veshv / utils / server_handle.kt

diff --git a/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/server_handle.kt b/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/server_handle.kt
index b8784c6..9c0a6e1 100644 (file)
--- a/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/server_handle.kt
+++ b/sources/hv-collector-utils/src/main/kotlin/org/onap/dcae/collectors/veshv/utils/server_handle.kt
@@ -19,8 +19,8 @@
  */
 package org.onap.dcae.collectors.veshv.utils
 
-import arrow.effects.IO
 import org.onap.dcae.collectors.veshv.utils.logging.Logger
+import reactor.core.publisher.Mono
 import reactor.netty.DisposableServer
 import java.time.Duration
 
@@ -28,28 +28,46 @@ import java.time.Duration
  * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
  * @since August 2018
  */
-abstract class ServerHandle(val host: String, val port: Int) {
-    abstract fun shutdown(): IO<Unit>
-    abstract fun await(): IO<Unit>
+abstract class ServerHandle(val host: String, val port: Int) : Closeable {
+    abstract fun await(): Mono<Void>
 }
 
 /**
  * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
  * @since August 2018
  */
-class NettyServerHandle(private val ctx: DisposableServer) : ServerHandle(ctx.host(), ctx.port()) {
-    override fun shutdown() = IO {
-        logger.info { "Graceful shutdown" }
-        ctx.disposeNow(SHUTDOWN_TIMEOUT)
-        logger.info { "Server disposed" }
-    }
+class NettyServerHandle(private val ctx: DisposableServer,
+                        private val closeAction: Mono<Void> = Mono.empty())
+    : ServerHandle(ctx.host(), ctx.port()) {
+
+    override fun close(): Mono<Void> =
+            Mono.just(ctx)
+                    .filter { !it.isDisposed }
+                    .flatMap {
+                        closeAction.thenReturn(it)
+                    }
+                    .then(dispose())
+
+    private fun dispose(): Mono<Void> =
+            Mono.create<Int> { callback ->
+                logger.debug { "About to dispose NettyServer" }
+                ctx.dispose()
+                ctx.onDispose {
+                    logger.debug { "Netty server disposed" }
+                    callback.success(1)
+                }
+            }
+                    .delayElement(boundPortReleaseLatency)
+                    .then()
 
-    override fun await() = IO<Unit> {
-        ctx.channel().closeFuture().sync()
+    override fun await(): Mono<Void> = Mono.create { callback ->
+        ctx.channel().closeFuture().addListener {
+            callback.success()
+        }
     }
 
     companion object {
-        val logger = Logger(NettyServerHandle::class)
-        private val SHUTDOWN_TIMEOUT = Duration.ofSeconds(10)
+        private val logger = Logger(NettyServerHandle::class)
+        private val boundPortReleaseLatency = Duration.ofSeconds(1)
     }
 }