Add Controller Logging Feature

This features provides a mechanism to extend the logback.xml
properties to add controller specific loggers. The controller's
logger will log messages from topics that the controller listens
to in a controller specific network log. The original network
log is preserved and still logs every message from every controller.
Note that the way a logger is associated with a controller is by
having the logger name match the controller's name. Any configuration
file that has "logback-include-" prepended and a ".xml" extension
will be added to the logback.xml and logback-eelf.xml files as
extensions to the base configuration.

Issue-ID: POLICY-1427
Change-Id: Iaeb823421eadb7ee413b6b03ae3dfe862f230612
Signed-off-by: Daniel Cruz <dc443y@att.com>

1 files changed, 97 insertions, 0 deletions

diff --git a/feature-controller-logging/src/main/java/org/onap/policy/drools/controller/logging/ControllerLoggingFeature.java b/feature-controller-logging/src/main/java/org/onap/policy/drools/controller/logging/ControllerLoggingFeature.java
new file mode 100755
index 00000000..ec59ace6
--- /dev/null
+++ b/feature-controller-logging/src/main/java/org/onap/policy/drools/controller/logging/ControllerLoggingFeature.java
@@ -0,0 +1,97 @@
+/*

+ * ============LICENSE_START=======================================================

+ * feature-controller-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.policy.drools.controller.logging;

+

+import org.onap.policy.common.endpoints.event.comm.Topic.CommInfrastructure;

+import org.onap.policy.common.endpoints.event.comm.TopicSink;

+import org.onap.policy.drools.controller.DroolsController;

+import org.onap.policy.drools.features.DroolsControllerFeatureAPI;

+import org.onap.policy.drools.features.PolicyControllerFeatureAPI;

+import org.onap.policy.drools.features.PolicyEngineFeatureAPI;

+import org.onap.policy.drools.protocol.configuration.ControllerConfiguration;

+import org.onap.policy.drools.protocol.configuration.PdpdConfiguration;

+import org.onap.policy.drools.system.PolicyController;

+import org.onap.policy.drools.system.PolicyEngine;

+import org.slf4j.Logger;

+import org.slf4j.LoggerFactory;

+

+/**

+ * This class hooks the network logging implementation into DroolsPDP. It will disable the

+ * default network logger where all topic traffic is logged and segregates the topic

+ * traffic by controller for each supported control loop use case.

+ */

+

+/*

+ * PolicyControllerFeatureAPI - the 'beforeStart' hook is used to shut off the default

+ * network logger and the 'beforeOffer' hook is used to log incoming topic messages

+ *

+ * DroolsControllerFeatureAPI - the 'afterDeliver' hook is where the outgoing topic

+ * messages are logged

+ *

+ */

+public class ControllerLoggingFeature

+                implements PolicyEngineFeatureAPI, DroolsControllerFeatureAPI, PolicyControllerFeatureAPI {

+

+    @Override

+    public int getSequenceNumber() {

+        return 1000;

+    }

+

+    /**

+     * The 'beforeOffer' hook will intercept an incoming topic message and append it to

+     * the log file that is configured for the controller logger.

+     */

+    @Override

+    public boolean beforeOffer(PolicyController controller, CommInfrastructure protocol, String topic, String event) {

+        Logger controllerLogger = LoggerFactory.getLogger(controller.getName());

+        controllerLogger.info("[IN|{}|{}]{}{}", protocol, topic, System.lineSeparator(), event);

+        return false;

+    }

+

+    /**

+     * The 'afterDeliver' hook will intercept an outgoing topic message and append it to

+     * the log file that is configured for the controller logger.

+     */

+    @Override

+    public boolean afterDeliver(DroolsController controller, TopicSink sink, Object fact, String json,

+                    boolean success) {

+        if (success) {

+            Logger controllerLogger = LoggerFactory.getLogger(PolicyController.factory.get(controller).getName());

+            controllerLogger.info("[OUT|{}|{}]{}{}", sink.getTopicCommInfrastructure(), sink.getTopic(),

+                            System.lineSeparator(), json);

+        }

+        return false;

+    }

+

+    /**

+     * The 'afterOnTopicEvent' hook will determine which controllers were updated and log

+     * the event to the appropriate controller logs.

+     */

+    @Override

+    public boolean afterOnTopicEvent(PolicyEngine engine, PdpdConfiguration configuration, CommInfrastructure commType,

+                    String topic, String event) {

+        for (ControllerConfiguration controller : configuration.getControllers()) {

+            Logger controllerLogger = LoggerFactory.getLogger(controller.getName());

+            controllerLogger.info("[IN|{}|{}]{}{}", commType, topic, System.lineSeparator(), event);

+        }

+        return false;

+    }

+}