1 files changed, 108 insertions, 0 deletions
diff --git a/common/src/main/java/org/openecomp/mso/logger/MsoLogInitializer.java b/common/src/main/java/org/openecomp/mso/logger/MsoLogInitializer.java
new file mode 100644
index 0000000000..0c96dabbea
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+++ b/common/src/main/java/org/openecomp/mso/logger/MsoLogInitializer.java
@@ -0,0 +1,108 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * OPENECOMP - MSO
+ * ================================================================================
+ * Copyright (C) 2017 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.openecomp.mso.logger;
+
+
+import java.io.File;
+
+import javax.servlet.ServletContextEvent;
+import javax.servlet.ServletContextListener;
+import javax.servlet.annotation.WebListener;
+
+import org.slf4j.LoggerFactory;
+
+import ch.qos.logback.classic.LoggerContext;
+import ch.qos.logback.classic.joran.JoranConfigurator;
+
+
+/**
+ * This class will attempt to initialize MSO log4j when part of a web application.
+ * It will look for the logback configuration file logback.xml in the 
+ * following order:
+ * 1. In an init-param "log.configuration" in web.xml
+ * 2. TODO: In a property "log.configuration" in an "application.properties" file
+ * 3. In the default location "/etc/ecomp/mso/config"
+ * 4. Using the log4j default (check system property log.configuration or
+ *    just look on the classpath for logback.xml)
+ * 
+ *
+ */
+@WebListener
+public class MsoLogInitializer implements ServletContextListener
+{
+	private static String DEFAULT_LOG4J_PROPERTIES_FILE = "/etc/ecomp/mso/config/logback.xml";
+	private static String prefixMsoPropertiesPath = System.getProperty("mso.config.path");
+	static  {
+		if (prefixMsoPropertiesPath == null) {
+			prefixMsoPropertiesPath = "/";
+		} else if (!(prefixMsoPropertiesPath.charAt(prefixMsoPropertiesPath.length() - 1) == '/')) {
+			prefixMsoPropertiesPath = prefixMsoPropertiesPath + "/";
+		}
+	}
+	
+	public MsoLogInitializer () {
+	}
+
+
+	@Override
+	public void contextDestroyed(ServletContextEvent event) {
+		// Nothing to do...
+	}
+
+	@Override
+	public void contextInitialized(ServletContextEvent event)
+	{
+		String logPropertiesFile = null;
+		try {
+			// Look first in the init-parameters
+			String initParam = event.getServletContext().getInitParameter("log.configuration");
+			if (initParam != null && fileIsReadable(prefixMsoPropertiesPath + initParam)) {
+				logPropertiesFile = prefixMsoPropertiesPath + initParam;
+			}
+			else if (fileIsReadable(DEFAULT_LOG4J_PROPERTIES_FILE)) {
+				logPropertiesFile = DEFAULT_LOG4J_PROPERTIES_FILE;
+			}
+			
+			if (logPropertiesFile != null) {
+				// Initialize loggers with the specified file.  If no such file was
+				// specified, will use the default Log4j resolution.
+				LoggerContext context = (LoggerContext) LoggerFactory.getILoggerFactory(); 
+				JoranConfigurator jc = new JoranConfigurator(); 
+				jc.setContext(context); 		
+				context.reset(); 
+				jc.doConfigure(logPropertiesFile);
+				// Try it out
+				MsoLogger initLogger = MsoLogger.getMsoLogger(MsoLogger.Catalog.GENERAL);
+				initLogger.info(MessageEnum.INIT_LOGGER, logPropertiesFile, "", "");
+			}
+		} catch (Exception e) {
+			MsoLogger initLogger = MsoLogger.getMsoLogger(MsoLogger.Catalog.GENERAL);
+			initLogger.error (MessageEnum.INIT_LOGGER_FAIL, "", "", MsoLogger.ErrorCode.UnknownError, "", e);
+		}
+	}
+	
+	private boolean fileIsReadable (String filePath) {
+		File f = new File(filePath);
+		if (f.exists() && f.canRead())
+			return true;
+		return false;
+	}
+}