1 files changed, 52 insertions, 0 deletions
diff --git a/openecomp-be/lib/openecomp-sdc-logging-lib/openecomp-sdc-logging-core/src/main/java/org/openecomp/sdc/logging/context/InstanceId.java b/openecomp-be/lib/openecomp-sdc-logging-lib/openecomp-sdc-logging-core/src/main/java/org/openecomp/sdc/logging/context/InstanceId.java
new file mode 100644
index 0000000000..73544e1d9f
--- /dev/null
+++ b/openecomp-be/lib/openecomp-sdc-logging-lib/openecomp-sdc-logging-core/src/main/java/org/openecomp/sdc/logging/context/InstanceId.java
@@ -0,0 +1,52 @@
+/*
+ * Copyright © 2016-2018 European Support Limited
+ *
+ * Licensed 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.openecomp.sdc.logging.context;
+
+import java.util.UUID;
+
+/**
+ * Holds a unique ID of the logging entity. Is useful to distinguish between different nodes of the same application. If
+ * it can be assumed, that the node can be re-started, then the unique ID must be retained on the disk.
+ *
+ * @author evitaliy
+ * @since 04 Mar 2018
+ */
+@SuppressWarnings({"UseOfSystemOutOrSystemErr", "CallToPrintStackTrace", "squid:S106", "squid:S1148"})
+public class InstanceId {
+
+    private static final String INSTANCE_ID;
+
+    static {
+        // for some reason Java Preferences API
+        // https://docs.oracle.com/javase/8/docs/technotes/guides/preferences/overview.html
+        // didn't work in a Docker container, so for now just generate an ID every time
+        INSTANCE_ID = UUID.randomUUID().toString();
+    }
+
+    private InstanceId() {
+        // prevent instantiation
+    }
+
+    /**
+     * A unique ID of the logging entity.
+     *
+     * @return unique logging entity ID
+     */
+    public static String get() {
+        return INSTANCE_ID;
+    }
+}