1 files changed, 83 insertions, 0 deletions
diff --git a/policy-utils/src/main/java/org/onap/policy/drools/utils/logging/LoggerUtil.java b/policy-utils/src/main/java/org/onap/policy/drools/utils/logging/LoggerUtil.java
new file mode 100644
index 00000000..26b35702
--- /dev/null
+++ b/policy-utils/src/main/java/org/onap/policy/drools/utils/logging/LoggerUtil.java
@@ -0,0 +1,83 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP
+ * ================================================================================
+ * Copyright (C) 2017-2018 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.policy.drools.utils.logging;
+
+import org.slf4j.LoggerFactory;
+
+import ch.qos.logback.classic.LoggerContext;
+import org.slf4j.Marker;
+import org.slf4j.MarkerFactory;
+
+/**
+ * Loger Utils
+ */
+public class LoggerUtil {
+
+    /**
+     * Root logger
+     */
+    public static final String ROOT_LOGGER = "ROOT";
+
+    /**
+     * Metric Log Marker Name
+     */
+    public static final String METRIC_LOG_MARKER_NAME = "metric";
+
+    /**
+     * Transaction Log Marker Name
+     */
+    public static final String TRANSACTION_LOG_MARKER_NAME = "transaction";
+
+    /**
+     * Marks a logging record as a metric
+     */
+    public static final Marker METRIC_LOG_MARKER = MarkerFactory.getMarker(METRIC_LOG_MARKER_NAME);
+
+    /**
+     * Marks a logging record as an end-to-end transaction
+     */
+    public static final Marker TRANSACTION_LOG_MARKER = MarkerFactory.getMarker(TRANSACTION_LOG_MARKER_NAME);
+
+
+    private LoggerUtil() {
+        // Empty constructor
+    }
+
+    /**
+     * set the log level of a logger
+     *
+     * @param loggerName logger name
+     * @param loggerLevel logger level
+     */
+    public static String setLevel(String loggerName, String loggerLevel) {
+        if (!(LoggerFactory.getILoggerFactory() instanceof LoggerContext)) {
+            throw new IllegalStateException("The SLF4J logger factory is not configured for logback");
+        }
+
+        final LoggerContext context = (LoggerContext) LoggerFactory.getILoggerFactory();
+        final ch.qos.logback.classic.Logger logger = context.getLogger(loggerName);
+        if (logger == null) {
+            throw new IllegalArgumentException("no logger " + loggerName);
+        }
+
+        logger.setLevel(ch.qos.logback.classic.Level.toLevel(loggerLevel));
+        return logger.getLevel().toString();
+    }
+}