Introduced DittoLogger and DittoDiagnosticLoggingAdapter for maki…

…ng it more easy to enhance log messages with correlation ID than using LogUtil directly.

Signed-off-by: Juergen Fickel <juergen.fickel@bosch-si.com>

services/utils/akka/src/main/java/org/eclipse/ditto/services/utils/akka/logging/AutoCloseableSlf4jLogger.java

@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2019 Contributors to the Eclipse Foundation
+ *
+ * See the NOTICE file(s) distributed with this work for additional
+ * information regarding copyright ownership.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License 2.0 which is available at
+ * http://www.eclipse.org/legal/epl-2.0
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
+package org.eclipse.ditto.services.utils.akka.logging;
+
+import javax.annotation.concurrent.NotThreadSafe;
+
+import org.slf4j.Logger;
+
+/**
+ * This interface represents a SLF4J {@link Logger} which additionally is {@link AutoCloseable}.
+ * The semantic of the {@link #close()} method is defined by its implementation.
+ */
+@NotThreadSafe
+public interface AutoCloseableSlf4jLogger extends Logger, AutoCloseable {
+
+    @Override
+    void close();
+
+}