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java/org/apache/catalina/startup/EngineConfig.java

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+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.apache.catalina.startup;
+
+
+import org.apache.catalina.Engine;
+import org.apache.catalina.Lifecycle;
+import org.apache.catalina.LifecycleEvent;
+import org.apache.catalina.LifecycleListener;
+import org.apache.juli.logging.Log;
+import org.apache.juli.logging.LogFactory;
+import org.apache.tomcat.util.res.StringManager;
+
+
+/**
+ * Startup event listener for a <b>Engine</b> that configures the properties
+ * of that Engine, and the associated defined contexts.
+ *
+ * @author Craig R. McClanahan
+ */
+public class EngineConfig
+    implements LifecycleListener {
+
+
+    private static final Log log = LogFactory.getLog(EngineConfig.class);
+
+    // ----------------------------------------------------- Instance Variables
+
+
+    /**
+     * The Engine we are associated with.
+     */
+    protected Engine engine = null;
+
+
+    /**
+     * The string resources for this package.
+     */
+    protected static final StringManager sm =
+        StringManager.getManager(Constants.Package);
+
+
+    // --------------------------------------------------------- Public Methods
+
+
+    /**
+     * Process the START event for an associated Engine.
+     *
+     * @param event The lifecycle event that has occurred
+     */
+    @Override
+    public void lifecycleEvent(LifecycleEvent event) {
+
+        // Identify the engine we are associated with
+        try {
+            engine = (Engine) event.getLifecycle();
+        } catch (ClassCastException e) {
+            log.error(sm.getString("engineConfig.cce", event.getLifecycle()), e);
+            return;
+        }
+
+        // Process the event that has occurred
+        if (event.getType().equals(Lifecycle.START_EVENT))
+            start();
+        else if (event.getType().equals(Lifecycle.STOP_EVENT))
+            stop();
+
+    }
+
+
+    // -------------------------------------------------------- Protected Methods
+
+
+    /**
+     * Process a "start" event for this Engine.
+     */
+    protected void start() {
+
+        if (engine.getLogger().isDebugEnabled())
+            engine.getLogger().debug(sm.getString("engineConfig.start"));
+
+    }
+
+
+    /**
+     * Process a "stop" event for this Engine.
+     */
+    protected void stop() {
+
+        if (engine.getLogger().isDebugEnabled())
+            engine.getLogger().debug(sm.getString("engineConfig.stop"));
+
+    }
+
+
+}