aboutsummaryrefslogtreecommitdiffstats
path: root/policy-management/src/main/java/org/onap/policy/drools/system/internal/AggregatedPolicyController.java
diff options
context:
space:
mode:
Diffstat (limited to 'policy-management/src/main/java/org/onap/policy/drools/system/internal/AggregatedPolicyController.java')
-rw-r--r--policy-management/src/main/java/org/onap/policy/drools/system/internal/AggregatedPolicyController.java1192
1 files changed, 606 insertions, 586 deletions
diff --git a/policy-management/src/main/java/org/onap/policy/drools/system/internal/AggregatedPolicyController.java b/policy-management/src/main/java/org/onap/policy/drools/system/internal/AggregatedPolicyController.java
index ea631fae..41408258 100644
--- a/policy-management/src/main/java/org/onap/policy/drools/system/internal/AggregatedPolicyController.java
+++ b/policy-management/src/main/java/org/onap/policy/drools/system/internal/AggregatedPolicyController.java
@@ -20,604 +20,624 @@
package org.onap.policy.drools.system.internal;
+import com.fasterxml.jackson.annotation.JsonIgnore;
+
import java.util.HashMap;
import java.util.List;
import java.util.Properties;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
+import org.onap.policy.common.endpoints.event.comm.Topic;
+import org.onap.policy.common.endpoints.event.comm.TopicListener;
+import org.onap.policy.common.endpoints.event.comm.TopicSink;
+import org.onap.policy.common.endpoints.event.comm.TopicSource;
+import org.onap.policy.common.endpoints.event.comm.impl.ProxyTopicEndpointManager;
import org.onap.policy.drools.controller.DroolsController;
-import org.onap.policy.drools.event.comm.Topic;
-import org.onap.policy.drools.event.comm.TopicEndpoint;
-import org.onap.policy.drools.event.comm.TopicListener;
-import org.onap.policy.drools.event.comm.TopicSink;
-import org.onap.policy.drools.event.comm.TopicSource;
import org.onap.policy.drools.features.PolicyControllerFeatureAPI;
import org.onap.policy.drools.persistence.SystemPersistence;
-import org.onap.policy.drools.properties.PolicyProperties;
+import org.onap.policy.drools.properties.DroolsProperties;
import org.onap.policy.drools.protocol.configuration.DroolsConfiguration;
import org.onap.policy.drools.system.PolicyController;
-
-import com.fasterxml.jackson.annotation.JsonIgnore;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
/**
- * This implementation of the Policy Controller merely aggregates and tracks for
- * management purposes all underlying resources that this controller depends upon.
+ * This implementation of the Policy Controller merely aggregates and tracks for management purposes
+ * all underlying resources that this controller depends upon.
*/
-public class AggregatedPolicyController implements PolicyController,
- TopicListener {
-
- /**
- * Logger
- */
- private static Logger logger = LoggerFactory.getLogger(AggregatedPolicyController.class);
-
- /**
- * identifier for this policy controller
- */
- protected final String name;
-
- /**
- * Abstracted Event Sources List regardless communication
- * technology
- */
- protected final List<? extends TopicSource> sources;
-
- /**
- * Abstracted Event Sinks List regardless communication
- * technology
- */
- protected final List<? extends TopicSink> sinks;
-
- /**
- * Mapping topics to sinks
- */
- @JsonIgnore
- protected final HashMap<String, TopicSink> topic2Sinks =
- new HashMap<>();
-
- /**
- * Is this Policy Controller running (alive) ?
- * reflects invocation of start()/stop() only
- */
- protected volatile boolean alive;
-
- /**
- * Is this Policy Controller locked ?
- * reflects if i/o controller related operations and start
- * are permitted,
- * more specifically: start(), deliver() and onTopicEvent().
- * It does not affect the ability to stop the
- * underlying drools infrastructure
- */
- protected volatile boolean locked;
-
- /**
- * Policy Drools Controller
- */
- protected volatile DroolsController droolsController;
-
- /**
- * Properties used to initialize controller
- */
- protected final Properties properties;
-
- /**
- * Constructor version mainly used for bootstrapping at initialization time
- * a policy engine controller
- *
- * @param name controller name
- * @param properties
- *
- * @throws IllegalArgumentException when invalid arguments are provided
- */
- public AggregatedPolicyController(String name, Properties properties) {
-
- this.name = name;
-
- /*
- * 1. Register read topics with network infrastructure (ueb, dmaap, rest)
- * 2. Register write topics with network infrastructure (ueb, dmaap, rest)
- * 3. Register with drools infrastructure
- */
-
- // Create/Reuse Readers/Writers for all event sources endpoints
-
- this.sources = TopicEndpoint.manager.addTopicSources(properties);
- this.sinks = TopicEndpoint.manager.addTopicSinks(properties);
-
- initDrools(properties);
- initSinks();
-
- /* persist new properties */
- SystemPersistence.manager.storeController(name, properties);
- this.properties = properties;
- }
-
- /**
- * initialize drools layer
- * @throws IllegalArgumentException if invalid parameters are passed in
- */
- protected void initDrools(Properties properties) {
- try {
- // Register with drools infrastructure
- this.droolsController = DroolsController.factory.build(properties, sources, sinks);
- } catch (Exception | LinkageError e) {
- logger.error("{}: cannot init-drools because of {}", this, e.getMessage(), e);
- throw new IllegalArgumentException(e);
- }
- }
-
- /**
- * initialize sinks
- * @throws IllegalArgumentException if invalid parameters are passed in
- */
- protected void initSinks() {
- this.topic2Sinks.clear();
- for (TopicSink sink: sinks) {
- this.topic2Sinks.put(sink.getTopic(), sink);
- }
- }
-
- /**
- * {@inheritDoc}
- */
- @Override
- public boolean updateDrools(DroolsConfiguration newDroolsConfiguration) {
-
- DroolsConfiguration oldDroolsConfiguration =
- new DroolsConfiguration(this.droolsController.getArtifactId(),
- this.droolsController.getGroupId(),
- this.droolsController.getVersion());
-
- if (oldDroolsConfiguration.getGroupId().equalsIgnoreCase(newDroolsConfiguration.getGroupId()) &&
- oldDroolsConfiguration.getArtifactId().equalsIgnoreCase(newDroolsConfiguration.getArtifactId()) &&
- oldDroolsConfiguration.getVersion().equalsIgnoreCase(newDroolsConfiguration.getVersion())) {
- logger.warn("{}: cannot update-drools: identical configuration {} vs {}",
- this, oldDroolsConfiguration, newDroolsConfiguration);
- return true;
- }
-
- try {
- /* Drools Controller created, update initialization properties for restarts */
-
- this.properties.setProperty(PolicyProperties.RULES_GROUPID, newDroolsConfiguration.getGroupId());
- this.properties.setProperty(PolicyProperties.RULES_ARTIFACTID, newDroolsConfiguration.getArtifactId());
- this.properties.setProperty(PolicyProperties.RULES_VERSION, newDroolsConfiguration.getVersion());
-
- SystemPersistence.manager.storeController(name, this.properties);
-
- this.initDrools(this.properties);
-
- /* set drools controller to current locked status */
-
- if (this.isLocked())
- this.droolsController.lock();
- else
- this.droolsController.unlock();
-
- /* set drools controller to current alive status */
-
- if (this.isAlive())
- this.droolsController.start();
- else
- this.droolsController.stop();
-
- } catch (IllegalArgumentException e) {
- logger.error("{}: cannot update-drools because of {}", this, e.getMessage(), e);
- return false;
- }
-
- return true;
- }
-
- /**
- * {@inheritDoc}
- */
- @Override
- public String getName() {
- return this.name;
- }
-
- /**
- * {@inheritDoc}
- */
- @Override
- public boolean start() {
- logger.info("{}: start", this);
-
- for (PolicyControllerFeatureAPI feature : PolicyControllerFeatureAPI.providers.getList()) {
- try {
- if (feature.beforeStart(this))
- return true;
- } catch (Exception e) {
- logger.error("{}: feature {} before-start failure because of {}",
- this, feature.getClass().getName(), e.getMessage(), e);
- }
- }
-
- if (this.isLocked())
- throw new IllegalStateException("Policy Controller " + name + " is locked");
-
- synchronized(this) {
- if (this.alive)
- return true;
-
- this.alive = true;
- }
-
- boolean success = this.droolsController.start();
-
- // register for events
-
- for (TopicSource source: sources) {
- source.register(this);
- }
-
- for (TopicSink sink: sinks) {
- try {
- sink.start();
- } catch (Exception e) {
- logger.error("{}: cannot start {} because of {}",
- this, sink, e.getMessage(), e);
- }
- }
-
- for (PolicyControllerFeatureAPI feature : PolicyControllerFeatureAPI.providers.getList()) {
- try {
- if (feature.afterStart(this))
- return true;
- } catch (Exception e) {
- logger.error("{}: feature {} after-start failure because of {}",
- this, feature.getClass().getName(), e.getMessage(), e);
- }
- }
-
- return success;
- }
-
- /**
- * {@inheritDoc}
- */
- @Override
- public boolean stop() {
- logger.info("{}: stop", this);
-
- for (PolicyControllerFeatureAPI feature : PolicyControllerFeatureAPI.providers.getList()) {
- try {
- if (feature.beforeStop(this))
- return true;
- } catch (Exception e) {
- logger.error("{}: feature {} before-stop failure because of {}",
- this, feature.getClass().getName(), e.getMessage(), e);
- }
- }
-
- /* stop regardless locked state */
-
- synchronized(this) {
- if (!this.alive)
- return true;
-
- this.alive = false;
- }
-
- // 1. Stop registration
-
- for (TopicSource source: sources) {
- source.unregister(this);
- }
-
- boolean success = this.droolsController.stop();
-
- for (PolicyControllerFeatureAPI feature : PolicyControllerFeatureAPI.providers.getList()) {
- try {
- if (feature.afterStop(this))
- return true;
- } catch (Exception e) {
- logger.error("{}: feature {} after-stop failure because of {}",
- this, feature.getClass().getName(), e.getMessage(), e);
- }
- }
-
- return success;
- }
-
- /**
- * {@inheritDoc}
- */
- @Override
- public void shutdown() {
- logger.info("{}: shutdown", this);
-
- for (PolicyControllerFeatureAPI feature : PolicyControllerFeatureAPI.providers.getList()) {
- try {
- if (feature.beforeShutdown(this))
- return;
- } catch (Exception e) {
- logger.error("{}: feature {} before-shutdown failure because of {}",
- this, feature.getClass().getName(), e.getMessage(), e);
- }
- }
-
- this.stop();
-
- DroolsController.factory.shutdown(this.droolsController);
-
- for (PolicyControllerFeatureAPI feature : PolicyControllerFeatureAPI.providers.getList()) {
- try {
- if (feature.afterShutdown(this))
- return;
- } catch (Exception e) {
- logger.error("{}: feature {} after-shutdown failure because of {}",
- this, feature.getClass().getName(), e.getMessage(), e);
- }
- }
- }
-
- /**
- * {@inheritDoc}
- */
- @Override
- public void halt() {
- logger.info("{}: halt", this);
-
- for (PolicyControllerFeatureAPI feature : PolicyControllerFeatureAPI.providers.getList()) {
- try {
- if (feature.beforeHalt(this))
- return;
- } catch (Exception e) {
- logger.error("{}: feature {} before-halt failure because of {}",
- this, feature.getClass().getName(), e.getMessage(), e);
- }
- }
-
- this.stop();
- DroolsController.factory.destroy(this.droolsController);
- SystemPersistence.manager.deleteController(this.name);
-
- for (PolicyControllerFeatureAPI feature : PolicyControllerFeatureAPI.providers.getList()) {
- try {
- if (feature.afterHalt(this))
- return;
- } catch (Exception e) {
- logger.error("{}: feature {} after-halt failure because of {}",
- this, feature.getClass().getName(), e.getMessage(), e);
- }
- }
- }
-
- /**
- * {@inheritDoc}
- */
- @Override
- public void onTopicEvent(Topic.CommInfrastructure commType,
- String topic, String event) {
-
- if (logger.isDebugEnabled())
- logger.debug("{}: event offered from {}:{}: {}", this, commType, topic, event);
-
- for (PolicyControllerFeatureAPI feature : PolicyControllerFeatureAPI.providers.getList()) {
- try {
- if (feature.beforeOffer(this, commType, topic, event))
- return;
- } catch (Exception e) {
- logger.error("{}: feature {} before-offer failure because of {}",
- this, feature.getClass().getName(), e.getMessage(), e);
- }
- }
-
- if (this.locked)
- return;
-
- if (!this.alive)
- return;
-
- boolean success = this.droolsController.offer(topic, event);
-
- for (PolicyControllerFeatureAPI feature : PolicyControllerFeatureAPI.providers.getList()) {
- try {
- if (feature.afterOffer(this, commType, topic, event, success))
- return;
- } catch (Exception e) {
- logger.error("{}: feature {} after-offer failure because of {}",
- this, feature.getClass().getName(), e.getMessage(), e);
- }
- }
- }
-
- /**
- * {@inheritDoc}
- */
- @Override
- public boolean deliver(Topic.CommInfrastructure commType,
- String topic, Object event) {
-
- if (logger.isDebugEnabled())
- logger.debug("{}: deliver event to {}:{}: {}", this, commType, topic, event);
-
- for (PolicyControllerFeatureAPI feature : PolicyControllerFeatureAPI.providers.getList()) {
- try {
- if (feature.beforeDeliver(this, commType, topic, event))
- return true;
- } catch (Exception e) {
- logger.error("{}: feature {} before-deliver failure because of {}",
- this, feature.getClass().getName(), e.getMessage(), e);
- }
- }
-
- if (topic == null || topic.isEmpty())
- throw new IllegalArgumentException("Invalid Topic");
-
- if (event == null)
- throw new IllegalArgumentException("Invalid Event");
-
- if (!this.isAlive())
- throw new IllegalStateException("Policy Engine is stopped");
-
- if (this.isLocked())
- throw new IllegalStateException("Policy Engine is locked");
-
- if (!this.topic2Sinks.containsKey(topic)) {
- logger.warn("{}: cannot deliver event because the sink {}:{} is not registered: {}",
- this, commType, topic, event);
- throw new IllegalArgumentException("Unsuported topic " + topic + " for delivery");
- }
-
- boolean success = this.droolsController.deliver(this.topic2Sinks.get(topic), event);
-
- for (PolicyControllerFeatureAPI feature : PolicyControllerFeatureAPI.providers.getList()) {
- try {
- if (feature.afterDeliver(this, commType, topic, event, success))
- return success;
- } catch (Exception e) {
- logger.error("{}: feature {} after-deliver failure because of {}",
- this, feature.getClass().getName(), e.getMessage(), e);
- }
- }
-
- return success;
- }
-
- /**
- * {@inheritDoc}
- */
- @Override
- public boolean isAlive() {
- return this.alive;
- }
-
- /**
- * {@inheritDoc}
- */
- @Override
- public boolean lock() {
- logger.info("{}: lock", this);
-
- for (PolicyControllerFeatureAPI feature : PolicyControllerFeatureAPI.providers.getList()) {
- try {
- if (feature.beforeLock(this))
- return true;
- } catch (Exception e) {
- logger.error("{}: feature {} before-lock failure because of {}",
- this, feature.getClass().getName(), e.getMessage(), e);
- }
- }
-
- synchronized(this) {
- if (this.locked)
- return true;
-
- this.locked = true;
- }
-
- // it does not affect associated sources/sinks, they are
- // autonomous entities
-
- boolean success = this.droolsController.lock();
-
- for (PolicyControllerFeatureAPI feature : PolicyControllerFeatureAPI.providers.getList()) {
- try {
- if (feature.afterLock(this))
- return true;
- } catch (Exception e) {
- logger.error("{}: feature {} after-lock failure because of {}",
- this, feature.getClass().getName(), e.getMessage(), e);
- }
- }
-
- return success;
- }
-
- /**
- * {@inheritDoc}
- */
- @Override
- public boolean unlock() {
-
- logger.info("{}: unlock", this);
-
- for (PolicyControllerFeatureAPI feature : PolicyControllerFeatureAPI.providers.getList()) {
- try {
- if (feature.beforeUnlock(this))
- return true;
- } catch (Exception e) {
- logger.error("{}: feature {} before-unlock failure because of {}",
- this, feature.getClass().getName(), e.getMessage(), e);
- }
- }
-
- synchronized(this) {
- if (!this.locked)
- return true;
-
- this.locked = false;
- }
-
- boolean success = this.droolsController.unlock();
-
- for (PolicyControllerFeatureAPI feature : PolicyControllerFeatureAPI.providers.getList()) {
- try {
- if (feature.afterUnlock(this))
- return true;
- } catch (Exception e) {
- logger.error("{}: feature {} after-unlock failure because of {}",
- this, feature.getClass().getName(), e.getMessage(), e);
- }
- }
-
- return success;
- }
-
- /**
- * {@inheritDoc}
- */
- @Override
- public boolean isLocked() {
- return this.locked;
- }
-
- /**
- * {@inheritDoc}
- */
- @Override
- public List<? extends TopicSource> getTopicSources() {
- return this.sources;
- }
-
- /**
- * {@inheritDoc}
- */
- @Override
- public List<? extends TopicSink> getTopicSinks() {
- return this.sinks;
- }
-
- /**
- * {@inheritDoc}
- */
- @Override
- public DroolsController getDrools() {
- return this.droolsController;
- }
-
-
- /**
- * {@inheritDoc}
- */
- @Override
- @JsonIgnore
- public Properties getProperties() {
- return this.properties;
- }
-
- @Override
- public String toString() {
- StringBuilder builder = new StringBuilder();
- builder.append("AggregatedPolicyController [name=").append(name).append(", alive=").append(alive).append(", locked=").append(locked)
- .append(", droolsController=").append(droolsController).append("]");
- return builder.toString();
- }
+public class AggregatedPolicyController implements PolicyController, TopicListener {
+
+ /**
+ * Logger
+ */
+ private static Logger logger = LoggerFactory.getLogger(AggregatedPolicyController.class);
+
+ /**
+ * identifier for this policy controller
+ */
+ protected final String name;
+
+ /**
+ * Abstracted Event Sources List regardless communication technology
+ */
+ protected final List<? extends TopicSource> sources;
+
+ /**
+ * Abstracted Event Sinks List regardless communication technology
+ */
+ protected final List<? extends TopicSink> sinks;
+
+ /**
+ * Mapping topics to sinks
+ */
+ @JsonIgnore
+ protected final HashMap<String, TopicSink> topic2Sinks = new HashMap<>();
+
+ /**
+ * Is this Policy Controller running (alive) ? reflects invocation of start()/stop() only
+ */
+ protected volatile boolean alive;
+
+ /**
+ * Is this Policy Controller locked ? reflects if i/o controller related operations and start
+ * are permitted, more specifically: start(), deliver() and onTopicEvent(). It does not affect
+ * the ability to stop the underlying drools infrastructure
+ */
+ protected volatile boolean locked;
+
+ /**
+ * Policy Drools Controller
+ */
+ protected volatile DroolsController droolsController;
+
+ /**
+ * Properties used to initialize controller
+ */
+ protected final Properties properties;
+
+ /**
+ * Constructor version mainly used for bootstrapping at initialization time a policy engine
+ * controller
+ *
+ * @param name controller name
+ * @param properties
+ *
+ * @throws IllegalArgumentException when invalid arguments are provided
+ */
+ public AggregatedPolicyController(String name, Properties properties) {
+
+ this.name = name;
+
+ /*
+ * 1. Register read topics with network infrastructure (ueb, dmaap, rest) 2. Register write
+ * topics with network infrastructure (ueb, dmaap, rest) 3. Register with drools
+ * infrastructure
+ */
+
+ // Create/Reuse Readers/Writers for all event sources endpoints
+
+ this.sources = ProxyTopicEndpointManager.getInstance().addTopicSources(properties);
+ this.sinks = ProxyTopicEndpointManager.getInstance().addTopicSinks(properties);
+
+ initDrools(properties);
+ initSinks();
+
+ /* persist new properties */
+ SystemPersistence.manager.storeController(name, properties);
+ this.properties = properties;
+ }
+
+ /**
+ * initialize drools layer
+ *
+ * @throws IllegalArgumentException if invalid parameters are passed in
+ */
+ protected void initDrools(Properties properties) {
+ try {
+ // Register with drools infrastructure
+ this.droolsController = DroolsController.factory.build(properties, sources, sinks);
+ } catch (Exception | LinkageError e) {
+ logger.error("{}: cannot init-drools because of {}", this, e.getMessage(), e);
+ throw new IllegalArgumentException(e);
+ }
+ }
+
+ /**
+ * initialize sinks
+ *
+ * @throws IllegalArgumentException if invalid parameters are passed in
+ */
+ protected void initSinks() {
+ this.topic2Sinks.clear();
+ for (TopicSink sink : sinks) {
+ this.topic2Sinks.put(sink.getTopic(), sink);
+ }
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public boolean updateDrools(DroolsConfiguration newDroolsConfiguration) {
+
+ DroolsConfiguration oldDroolsConfiguration = new DroolsConfiguration(this.droolsController.getArtifactId(),
+ this.droolsController.getGroupId(), this.droolsController.getVersion());
+
+ if (oldDroolsConfiguration.getGroupId().equalsIgnoreCase(newDroolsConfiguration.getGroupId())
+ && oldDroolsConfiguration.getArtifactId().equalsIgnoreCase(newDroolsConfiguration.getArtifactId())
+ && oldDroolsConfiguration.getVersion().equalsIgnoreCase(newDroolsConfiguration.getVersion())) {
+ logger.warn("{}: cannot update-drools: identical configuration {} vs {}", this, oldDroolsConfiguration,
+ newDroolsConfiguration);
+ return true;
+ }
+
+ try {
+ /* Drools Controller created, update initialization properties for restarts */
+
+ this.properties.setProperty(DroolsProperties.RULES_GROUPID, newDroolsConfiguration.getGroupId());
+ this.properties.setProperty(DroolsProperties.RULES_ARTIFACTID, newDroolsConfiguration.getArtifactId());
+ this.properties.setProperty(DroolsProperties.RULES_VERSION, newDroolsConfiguration.getVersion());
+
+ SystemPersistence.manager.storeController(name, this.properties);
+
+ this.initDrools(this.properties);
+
+ /* set drools controller to current locked status */
+
+ if (this.isLocked()) {
+ this.droolsController.lock();
+ } else {
+ this.droolsController.unlock();
+ }
+
+ /* set drools controller to current alive status */
+
+ if (this.isAlive()) {
+ this.droolsController.start();
+ } else {
+ this.droolsController.stop();
+ }
+
+ } catch (IllegalArgumentException e) {
+ logger.error("{}: cannot update-drools because of {}", this, e.getMessage(), e);
+ return false;
+ }
+
+ return true;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public String getName() {
+ return this.name;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public boolean start() {
+ logger.info("{}: start", this);
+
+ for (PolicyControllerFeatureAPI feature : PolicyControllerFeatureAPI.providers.getList()) {
+ try {
+ if (feature.beforeStart(this)) {
+ return true;
+ }
+ } catch (Exception e) {
+ logger.error("{}: feature {} before-start failure because of {}", this, feature.getClass().getName(),
+ e.getMessage(), e);
+ }
+ }
+
+ if (this.isLocked()) {
+ throw new IllegalStateException("Policy Controller " + name + " is locked");
+ }
+
+ synchronized (this) {
+ if (this.alive) {
+ return true;
+ }
+
+ this.alive = true;
+ }
+
+ boolean success = this.droolsController.start();
+
+ // register for events
+
+ for (TopicSource source : sources) {
+ source.register(this);
+ }
+
+ for (TopicSink sink : sinks) {
+ try {
+ sink.start();
+ } catch (Exception e) {
+ logger.error("{}: cannot start {} because of {}", this, sink, e.getMessage(), e);
+ }
+ }
+
+ for (PolicyControllerFeatureAPI feature : PolicyControllerFeatureAPI.providers.getList()) {
+ try {
+ if (feature.afterStart(this)) {
+ return true;
+ }
+ } catch (Exception e) {
+ logger.error("{}: feature {} after-start failure because of {}", this, feature.getClass().getName(),
+ e.getMessage(), e);
+ }
+ }
+
+ return success;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public boolean stop() {
+ logger.info("{}: stop", this);
+
+ for (PolicyControllerFeatureAPI feature : PolicyControllerFeatureAPI.providers.getList()) {
+ try {
+ if (feature.beforeStop(this)) {
+ return true;
+ }
+ } catch (Exception e) {
+ logger.error("{}: feature {} before-stop failure because of {}", this, feature.getClass().getName(),
+ e.getMessage(), e);
+ }
+ }
+
+ /* stop regardless locked state */
+
+ synchronized (this) {
+ if (!this.alive) {
+ return true;
+ }
+
+ this.alive = false;
+ }
+
+ // 1. Stop registration
+
+ for (TopicSource source : sources) {
+ source.unregister(this);
+ }
+
+ boolean success = this.droolsController.stop();
+
+ for (PolicyControllerFeatureAPI feature : PolicyControllerFeatureAPI.providers.getList()) {
+ try {
+ if (feature.afterStop(this)) {
+ return true;
+ }
+ } catch (Exception e) {
+ logger.error("{}: feature {} after-stop failure because of {}", this, feature.getClass().getName(),
+ e.getMessage(), e);
+ }
+ }
+
+ return success;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public void shutdown() {
+ logger.info("{}: shutdown", this);
+
+ for (PolicyControllerFeatureAPI feature : PolicyControllerFeatureAPI.providers.getList()) {
+ try {
+ if (feature.beforeShutdown(this)) {
+ return;
+ }
+ } catch (Exception e) {
+ logger.error("{}: feature {} before-shutdown failure because of {}", this, feature.getClass().getName(),
+ e.getMessage(), e);
+ }
+ }
+
+ this.stop();
+
+ DroolsController.factory.shutdown(this.droolsController);
+
+ for (PolicyControllerFeatureAPI feature : PolicyControllerFeatureAPI.providers.getList()) {
+ try {
+ if (feature.afterShutdown(this)) {
+ return;
+ }
+ } catch (Exception e) {
+ logger.error("{}: feature {} after-shutdown failure because of {}", this, feature.getClass().getName(),
+ e.getMessage(), e);
+ }
+ }
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public void halt() {
+ logger.info("{}: halt", this);
+
+ for (PolicyControllerFeatureAPI feature : PolicyControllerFeatureAPI.providers.getList()) {
+ try {
+ if (feature.beforeHalt(this)) {
+ return;
+ }
+ } catch (Exception e) {
+ logger.error("{}: feature {} before-halt failure because of {}", this, feature.getClass().getName(),
+ e.getMessage(), e);
+ }
+ }
+
+ this.stop();
+ DroolsController.factory.destroy(this.droolsController);
+ SystemPersistence.manager.deleteController(this.name);
+
+ for (PolicyControllerFeatureAPI feature : PolicyControllerFeatureAPI.providers.getList()) {
+ try {
+ if (feature.afterHalt(this)) {
+ return;
+ }
+ } catch (Exception e) {
+ logger.error("{}: feature {} after-halt failure because of {}", this, feature.getClass().getName(),
+ e.getMessage(), e);
+ }
+ }
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public void onTopicEvent(Topic.CommInfrastructure commType, String topic, String event) {
+
+ if (logger.isDebugEnabled()) {
+ logger.debug("{}: event offered from {}:{}: {}", this, commType, topic, event);
+ }
+
+ for (PolicyControllerFeatureAPI feature : PolicyControllerFeatureAPI.providers.getList()) {
+ try {
+ if (feature.beforeOffer(this, commType, topic, event)) {
+ return;
+ }
+ } catch (Exception e) {
+ logger.error("{}: feature {} before-offer failure because of {}", this, feature.getClass().getName(),
+ e.getMessage(), e);
+ }
+ }
+
+ if (this.locked) {
+ return;
+ }
+
+ if (!this.alive) {
+ return;
+ }
+
+ boolean success = this.droolsController.offer(topic, event);
+
+ for (PolicyControllerFeatureAPI feature : PolicyControllerFeatureAPI.providers.getList()) {
+ try {
+ if (feature.afterOffer(this, commType, topic, event, success)) {
+ return;
+ }
+ } catch (Exception e) {
+ logger.error("{}: feature {} after-offer failure because of {}", this, feature.getClass().getName(),
+ e.getMessage(), e);
+ }
+ }
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public boolean deliver(Topic.CommInfrastructure commType, String topic, Object event) {
+
+ if (logger.isDebugEnabled()) {
+ logger.debug("{}: deliver event to {}:{}: {}", this, commType, topic, event);
+ }
+
+ for (PolicyControllerFeatureAPI feature : PolicyControllerFeatureAPI.providers.getList()) {
+ try {
+ if (feature.beforeDeliver(this, commType, topic, event)) {
+ return true;
+ }
+ } catch (Exception e) {
+ logger.error("{}: feature {} before-deliver failure because of {}", this, feature.getClass().getName(),
+ e.getMessage(), e);
+ }
+ }
+
+ if (topic == null || topic.isEmpty()) {
+ throw new IllegalArgumentException("Invalid Topic");
+ }
+
+ if (event == null) {
+ throw new IllegalArgumentException("Invalid Event");
+ }
+
+ if (!this.isAlive()) {
+ throw new IllegalStateException("Policy Engine is stopped");
+ }
+
+ if (this.isLocked()) {
+ throw new IllegalStateException("Policy Engine is locked");
+ }
+
+ if (!this.topic2Sinks.containsKey(topic)) {
+ logger.warn("{}: cannot deliver event because the sink {}:{} is not registered: {}", this, commType, topic,
+ event);
+ throw new IllegalArgumentException("Unsuported topic " + topic + " for delivery");
+ }
+
+ boolean success = this.droolsController.deliver(this.topic2Sinks.get(topic), event);
+
+ for (PolicyControllerFeatureAPI feature : PolicyControllerFeatureAPI.providers.getList()) {
+ try {
+ if (feature.afterDeliver(this, commType, topic, event, success)) {
+ return success;
+ }
+ } catch (Exception e) {
+ logger.error("{}: feature {} after-deliver failure because of {}", this, feature.getClass().getName(),
+ e.getMessage(), e);
+ }
+ }
+
+ return success;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public boolean isAlive() {
+ return this.alive;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public boolean lock() {
+ logger.info("{}: lock", this);
+
+ for (PolicyControllerFeatureAPI feature : PolicyControllerFeatureAPI.providers.getList()) {
+ try {
+ if (feature.beforeLock(this)) {
+ return true;
+ }
+ } catch (Exception e) {
+ logger.error("{}: feature {} before-lock failure because of {}", this, feature.getClass().getName(),
+ e.getMessage(), e);
+ }
+ }
+
+ synchronized (this) {
+ if (this.locked) {
+ return true;
+ }
+
+ this.locked = true;
+ }
+
+ // it does not affect associated sources/sinks, they are
+ // autonomous entities
+
+ boolean success = this.droolsController.lock();
+
+ for (PolicyControllerFeatureAPI feature : PolicyControllerFeatureAPI.providers.getList()) {
+ try {
+ if (feature.afterLock(this)) {
+ return true;
+ }
+ } catch (Exception e) {
+ logger.error("{}: feature {} after-lock failure because of {}", this, feature.getClass().getName(),
+ e.getMessage(), e);
+ }
+ }
+
+ return success;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public boolean unlock() {
+
+ logger.info("{}: unlock", this);
+
+ for (PolicyControllerFeatureAPI feature : PolicyControllerFeatureAPI.providers.getList()) {
+ try {
+ if (feature.beforeUnlock(this)) {
+ return true;
+ }
+ } catch (Exception e) {
+ logger.error("{}: feature {} before-unlock failure because of {}", this, feature.getClass().getName(),
+ e.getMessage(), e);
+ }
+ }
+
+ synchronized (this) {
+ if (!this.locked) {
+ return true;
+ }
+
+ this.locked = false;
+ }
+
+ boolean success = this.droolsController.unlock();
+
+ for (PolicyControllerFeatureAPI feature : PolicyControllerFeatureAPI.providers.getList()) {
+ try {
+ if (feature.afterUnlock(this)) {
+ return true;
+ }
+ } catch (Exception e) {
+ logger.error("{}: feature {} after-unlock failure because of {}", this, feature.getClass().getName(),
+ e.getMessage(), e);
+ }
+ }
+
+ return success;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public boolean isLocked() {
+ return this.locked;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public List<? extends TopicSource> getTopicSources() {
+ return this.sources;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public List<? extends TopicSink> getTopicSinks() {
+ return this.sinks;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public DroolsController getDrools() {
+ return this.droolsController;
+ }
+
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ @JsonIgnore
+ public Properties getProperties() {
+ return this.properties;
+ }
+
+ @Override
+ public String toString() {
+ StringBuilder builder = new StringBuilder();
+ builder.append("AggregatedPolicyController [name=").append(name).append(", alive=").append(alive)
+ .append(", locked=").append(locked).append(", droolsController=").append(droolsController).append("]");
+ return builder.toString();
+ }
}