Add JAX-RS and Spring filters for setting up MDC

Issue-ID: LOG-1113
Change-Id: I7167943384e3983c7eced1c969ed51fcd8130c88
Signed-off-by: Brittany Plummer (bp896r) <bp896r@att.com>

1 files changed, 43 insertions, 0 deletions

diff --git a/reference/logging-filter/logging-filter-base/src/main/java/org/onap/logging/filter/base/PropertyUtil.java b/reference/logging-filter/logging-filter-base/src/main/java/org/onap/logging/filter/base/PropertyUtil.java
new file mode 100644
index 0000000..5a094eb
--- /dev/null
+++ b/reference/logging-filter/logging-filter-base/src/main/java/org/onap/logging/filter/base/PropertyUtil.java
@@ -0,0 +1,43 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP - Logging
+ * ================================================================================
+ * Copyright (C) 2019 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * 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=========================================================
+ */
+
+package org.onap.logging.filter.base;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class PropertyUtil {
+    private final Logger logger = LoggerFactory.getLogger(this.getClass());
+
+    public String getProperty(String property) {
+        logger.info("Checking for system property [{}]", property);
+        String propertyValue = System.getProperty(property);
+        if (propertyValue == null || propertyValue.isEmpty()) {
+            logger.info("System property was null or empty. Checking environment variable for: {}", property);
+            propertyValue = System.getenv(property);
+            if (propertyValue == null || propertyValue.isEmpty()) {
+                logger.info("Environment variable: {} was null or empty. Returning value: {}", property,
+                        Constants.DefaultValues.UNKNOWN);
+                propertyValue = Constants.DefaultValues.UNKNOWN;
+            }
+        }
+        return propertyValue;
+    }
+}