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authorMagnusen, Drew (dm741q) <dm741q@att.com>2017-08-25 10:20:46 -0500
committerMagnusen, Drew (dm741q) <dm741q@att.com>2017-08-30 12:44:47 -0500
commitca5aaf029408e83498adc342023397fb1cbc9271 (patch)
treeed54460c4b9babca72d525a4f6c7f882b7be672d /feature-test-transaction/src/main/java/org
parent843df4cc5bacf7170c9f93719ec57298391b2400 (diff)
Added new test transaction feature
Added test transaction feature which is used to test the health of policy controllers. Issue-ID: POLICY-177 Change-Id: I9a966be73f040c01e208bffd1dd67e8d858c1d37 Signed-off-by: Magnusen, Drew (dm741q) <dm741q@att.com>
Diffstat (limited to 'feature-test-transaction/src/main/java/org')
-rw-r--r--feature-test-transaction/src/main/java/org/onap/policy/drools/testtransaction/TestTransaction.java227
-rw-r--r--feature-test-transaction/src/main/java/org/onap/policy/drools/testtransaction/TestTransactionFeature.java83
2 files changed, 310 insertions, 0 deletions
diff --git a/feature-test-transaction/src/main/java/org/onap/policy/drools/testtransaction/TestTransaction.java b/feature-test-transaction/src/main/java/org/onap/policy/drools/testtransaction/TestTransaction.java
new file mode 100644
index 00000000..b167898a
--- /dev/null
+++ b/feature-test-transaction/src/main/java/org/onap/policy/drools/testtransaction/TestTransaction.java
@@ -0,0 +1,227 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * feature-test-transaction
+ * ================================================================================
+ * 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.onap.policy.drools.testtransaction;
+
+import java.util.EventObject;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+
+
+import org.onap.policy.drools.controller.DroolsController;
+import org.onap.policy.drools.controller.internal.MavenDroolsController;
+import org.onap.policy.drools.system.PolicyController;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+/**
+ * TestTransaction interface
+ *
+ */
+public interface TestTransaction {
+
+ public static final String TT_FPC = "TT.FPC";
+ public static final String TT_COUNTER = "$ttc";
+ public static final String TT_UUID = "43868e59-d1f3-43c2-bd6f-86f89a61eea5";
+ public static long DEFAULT_TT_TASK_SLEEP = 20000;
+
+ public static final TestTransaction manager = new TTImpl();
+
+ public void register(PolicyController controller);
+ public void unregister(PolicyController controller);
+}
+
+/**
+ * Implementation of TestTransaction interface.
+ * Controls the registering/unregistering of
+ * PolicyController objects and the management
+ * of their related TTControllerTask threads.
+ */
+class TTImpl implements TestTransaction {
+
+ final protected Map<String, TTControllerTask> controllers = new HashMap<>();
+
+ @Override
+ public synchronized void register(PolicyController controller) {
+ if (controllers.containsValue(controller)) {
+ TTControllerTask controllerTask = controllers.get(controller.getName());
+ if (controllerTask.isAlive())
+ return;
+
+ // continue : unregister, register operation
+ }
+
+ TTControllerTask controllerTask = new TTControllerTask(controller);
+ controllers.put(controller.getName(), controllerTask);
+ }
+
+ @Override
+ public synchronized void unregister(PolicyController controller) {
+ if (!controllers.containsValue(controller))
+ return;
+
+ TTControllerTask controllerTask = controllers.get(controller.getName());
+ controllerTask.stop();
+
+ controllers.remove(controller.getName());
+ }
+}
+
+/**
+ * TTControllerTask implements the Runnabale interface
+ * Carries out the injection of an event into a drools
+ * session and subsequent query of a counter to ensure
+ * that forward progress is occuring.
+ *
+ */
+class TTControllerTask implements Runnable {
+ // get an instance of logger
+ private static final Logger logger = LoggerFactory.getLogger(TTControllerTask.class);
+
+ protected final PolicyController controller;
+
+ protected volatile boolean alive = true;
+ protected final Thread thread = new Thread(this);
+
+ public TTControllerTask(PolicyController controller) {
+ this.controller = controller;
+ thread.setName("tt-controller-task-" + controller.getName());
+ thread.start();
+ }
+
+ public PolicyController getController() {
+ return controller;
+ }
+
+ public synchronized boolean isAlive() {
+ return alive;
+ }
+
+ public synchronized void stop() {
+ this.alive = false;
+ thread.interrupt();
+ try {
+ thread.join(1000);
+ } catch (InterruptedException e) {
+ logger.error("TestTransaction thread threw", e);
+ thread.interrupt();
+ }
+ }
+
+ public Thread getThread() {
+ return thread;
+ }
+
+ @Override
+ public void run() {
+ try {
+ List<String> sessions =
+ controller.getDrools().getSessionNames();
+
+ if (!(controller.getDrools().isBrained())) {
+ alive = false;
+ logger.error(this + ": unknown drools controller");
+ return;
+ }
+
+ DroolsController drools = controller.getDrools();
+
+ HashMap<String,Long> fpcs = new HashMap<>();
+ for (String session: sessions) {
+ fpcs.put(session, -1L);
+ }
+
+ while (controller.isAlive() &&
+ !controller.isLocked() &&
+ drools.isBrained() &&
+ alive) {
+
+ for (String session : sessions) {
+ List<Object> facts = controller.getDrools().factQuery(session,
+ TestTransaction.TT_FPC,
+ TestTransaction.TT_COUNTER,
+ false);
+ if (facts == null || facts.size() != 1) {
+ /*
+ * unexpected something wrong here, can't expect to recover
+ * note this exception is caught right below at the exit of run()
+ */
+ logger.error("Controller: {}, with rules artifact: (group) {}, (artifact) {}, (version) {} - FPC query failed after EventObject insertion! ",
+ controller.getName(),
+ controller.getDrools().getGroupId(),
+ controller.getDrools().getArtifactId(),
+ controller.getDrools().getVersion());
+ break;
+ }
+ logger.debug("Facts: {}", facts);
+
+ long fpc = (Long) facts.get(0);
+ if (fpc != fpcs.get(session))
+ logger.info("Controller: {} , session {} - Forward progress successful: {} -> {}",
+ controller.getName(),
+ session,
+ fpcs.get(session),
+ fpc);
+ else
+ logger.error("Controller: {}, session {} - Forward progress failure: {}",
+ controller.getName(),
+ session,
+ fpc);
+
+ fpcs.put(session, fpc);
+ drools.getContainer().insert(session, new EventObject(TestTransaction.TT_UUID));
+ }
+
+ if (!alive)
+ return;
+
+ if (!Thread.currentThread().isInterrupted())
+ Thread.sleep(TestTransaction.DEFAULT_TT_TASK_SLEEP);
+ }
+ } catch (InterruptedException e) {
+ logger.info("{}: stopping ...", this, e);
+ }
+ catch (IllegalArgumentException e) {
+ logger.error("{}: controller {} has not been enabled for testing: ", this, controller.getName(), e.getMessage());
+ } catch (Exception e) {
+ logger.error("Controller: {} is not testable - TestTransaction caught exception: {} ",
+ controller.getName(),
+ e.getMessage());
+ logger.error("TestTransaction thread threw", e);
+ } finally {
+ logger.info("Exiting: {}", this);
+ alive = false;
+ }
+ }
+
+ @Override
+ public String toString() {
+ StringBuilder builder = new StringBuilder();
+ builder.append("TTControllerTask [controller=");
+ builder.append(controller);
+ builder.append(", alive=");
+ builder.append(alive);
+ builder.append(", thread=");
+ builder.append(thread.getName());
+ builder.append("]");
+ return builder.toString();
+ }
+
+}
diff --git a/feature-test-transaction/src/main/java/org/onap/policy/drools/testtransaction/TestTransactionFeature.java b/feature-test-transaction/src/main/java/org/onap/policy/drools/testtransaction/TestTransactionFeature.java
new file mode 100644
index 00000000..72c54969
--- /dev/null
+++ b/feature-test-transaction/src/main/java/org/onap/policy/drools/testtransaction/TestTransactionFeature.java
@@ -0,0 +1,83 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * feature-test-transaction
+ * ================================================================================
+ * 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.onap.policy.drools.testtransaction;
+
+import org.onap.policy.drools.features.PolicyControllerFeatureAPI;
+import org.onap.policy.drools.system.PolicyController;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+/**
+ * TestTransactionFeature implements the PolicyControllerFeatureAPI.
+ * TestTransactionFeature is the interface to the TestTransaction feature logic.
+ *
+ */
+public class TestTransactionFeature implements PolicyControllerFeatureAPI {
+
+ // get an instance of logger
+ private static final Logger logger = LoggerFactory.getLogger(TestTransactionFeature.class);
+
+ @Override
+ public boolean afterStart(PolicyController controller){
+
+ logger.info("TEST_TRANSACTION FEATURE LOADED");
+
+ if (controller.isAlive() &&
+ !controller.isLocked() &&
+ controller.getDrools().isBrained())
+ TestTransaction.manager.register(controller);
+
+ return false;
+ }
+
+ @Override
+ public boolean afterLock(PolicyController controller) {
+ logger.info("CONTROLLER " + controller.getName() + " LOCKED");
+
+ TestTransaction.manager.unregister(controller);
+ return false;
+ }
+
+ @Override
+ public boolean afterUnlock(PolicyController controller) {
+ logger.info("CONTROLLER " + controller.getName() + " UNLOCKED");
+
+ if (controller.isAlive() &&
+ !controller.isLocked() &&
+ controller.getDrools().isBrained())
+ TestTransaction.manager.register(controller);
+
+ return false;
+ }
+
+ @Override
+ public boolean beforeStop(PolicyController controller) {
+ logger.info("CONTROLLER " + controller.getName() + " ABOUT TO STOP");
+
+ TestTransaction.manager.unregister(controller);
+
+ return false;
+ }
+
+ @Override
+ public int getSequenceNumber() {
+ return 1000;
+ }
+}