1 files changed, 80 insertions, 0 deletions
diff --git a/logging-api/src/main/java/org/onap/aai/cl/mdc/MdcContext.java b/logging-api/src/main/java/org/onap/aai/cl/mdc/MdcContext.java
new file mode 100644
index 0000000..11cacd9
--- /dev/null
+++ b/logging-api/src/main/java/org/onap/aai/cl/mdc/MdcContext.java
@@ -0,0 +1,80 @@
+/**
+ * ============LICENSE_START=======================================================
+ * org.onap.aai
+ * ================================================================================
+ * Copyright © 2017 AT&T Intellectual Property. All rights reserved.
+ * Copyright © 2017 Amdocs
+ * ================================================================================
+ * 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.
+ * ============LICENSE_END=========================================================
+ *
+ * ECOMP is a trademark and service mark of AT&T Intellectual Property.
+ */
+package org.onap.aai.cl.mdc;
+
+import org.slf4j.MDC;
+
+import java.net.InetAddress;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+
+/**
+ * This class manages the MDC (mapped diagnostic context). Calling the init
+ * method when a new event is processed will save thread-specific context
+ * information which will be used when generating logs.
+ */
+public final class MdcContext {
+  public static String MDC_REQUEST_ID = "RequestId";
+  public static String MDC_SERVER_FQDN = "ServerFQDN";
+  public static String MDC_SERVICE_NAME = "ServiceName";
+  public static String MDC_PARTNER_NAME = "PartnerName";
+  public static String MDC_START_TIME = "StartTime";
+  public static String MDC_REMOTE_HOST = "RemoteHost";
+  public static String MDC_SERVICE_INSTANCE_ID = "ServiceInstanceId";
+  public static String MDC_CLIENT_ADDRESS = "ClientAddress";
+
+  /**
+   * Initializes the fields of the Mapped Diagnostic Context.
+   * 
+   * @param transId          - Unique transaction identifier.
+   * @param serviceName      - The name of the service generating the diagnostic.
+   * @param serviceInstance  - Unique identifier of the specific instance 
+   *                           generating the diagnostic.
+   * @param partnerName      - Name of the entity initiating the transction to 
+   *                           be logged
+   * @param clientAddress    - IP address of the transaction client.
+   */
+  public static void initialize(String transId, 
+                                String serviceName, 
+                                String serviceInstance,
+                                String partnerName, 
+                                String clientAddress) {
+    MDC.clear();
+    MDC.put(MDC_REQUEST_ID, transId);
+    MDC.put(MDC_SERVICE_NAME, serviceName);
+    MDC.put(MDC_SERVICE_INSTANCE_ID, serviceInstance);
+    MDC.put(MDC_PARTNER_NAME, partnerName);
+    MDC.put(MDC_CLIENT_ADDRESS, clientAddress);
+    MDC.put(MDC_START_TIME,
+        new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSSXXX").format(new Date()));
+
+    try {
+      MDC.put(MDC_SERVER_FQDN, InetAddress.getLocalHost().getCanonicalHostName());
+    } catch (Exception e) {
+      // If, for some reason we are unable to get the canonical host name, we
+      // just want to leave the field unpopulated.  There is not much value
+      // in doing anything else with an exception at this point.
+    }
+
+  }
+}