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authorJorge Hernandez <jh1730@att.com>2017-05-04 09:27:34 -0500
committerJorge Hernandez <jh1730@att.com>2017-05-04 09:45:56 -0500
commit4b780cfa3125e30acbd055e260bacf58d33c353e (patch)
tree8e69ce49abf8fb51a5ea9df66b5ce15336ceb44a /policy-management/src
parent3273b61a5dca60033be9fac302be82a761232401 (diff)
[POLICY-11] New REST APIs to obtain facts info
The following REST APIs have been added, shown by example: GET policy/pdp/engine/controllers/<controller-name>/drools : drools information for controller named <controller-name> For brevity in URL description, assume: DROOLS-REL-PATH=policy/pdp/engine/controllers/<controller-name>/drools GET ${DROOLS-REL-PATH}/<session-name>[?count=true] fact classes and count for <session-name> in controller <name> GET ${DROOLS-REL-PATH}/<session-name>/<classname> all fact objects of class <classname> for session <session-name> GET ${DROOLS-REL-PATH}/<session-name>/<query-name>/<query-id> all fact objects returned by drools query named <query-name> for the identifier <query-id> (need corresponding query definition in drl is necessary) Change-Id: I2f62931f54a65eec4ef80472ad1af05f30ed83ba Signed-off-by: Jorge Hernandez <jh1730@att.com>
Diffstat (limited to 'policy-management/src')
-rw-r--r--policy-management/src/main/java/org/openecomp/policy/drools/controller/DroolsController.java46
-rw-r--r--policy-management/src/main/java/org/openecomp/policy/drools/controller/internal/MavenDroolsController.java189
-rw-r--r--policy-management/src/main/java/org/openecomp/policy/drools/controller/internal/NullDroolsController.java58
-rw-r--r--policy-management/src/main/java/org/openecomp/policy/drools/protocol/coders/EventProtocolCoder.java29
-rw-r--r--policy-management/src/main/java/org/openecomp/policy/drools/server/restful/RestManager.java111
5 files changed, 395 insertions, 38 deletions
diff --git a/policy-management/src/main/java/org/openecomp/policy/drools/controller/DroolsController.java b/policy-management/src/main/java/org/openecomp/policy/drools/controller/DroolsController.java
index 72f8e0b2..0904d438 100644
--- a/policy-management/src/main/java/org/openecomp/policy/drools/controller/DroolsController.java
+++ b/policy-management/src/main/java/org/openecomp/policy/drools/controller/DroolsController.java
@@ -21,6 +21,7 @@
package org.openecomp.policy.drools.controller;
import java.util.List;
+import java.util.Map;
import org.openecomp.policy.drools.event.comm.TopicSink;
import org.openecomp.policy.drools.properties.Lockable;
@@ -65,14 +66,20 @@ public interface DroolsController extends Startable, Lockable {
* @return version
*/
public String getVersion();
-
/**
* return the policy session names
*
* @return policy session
*/
- public List<String> getSessionNames();
+ public List<String> getSessionNames();
+
+ /**
+ * return the policy full session names
+ *
+ * @return policy session
+ */
+ public List<String> getCanonicalSessionNames();
/**
* offers an event to this controller for processing
@@ -152,7 +159,40 @@ public interface DroolsController extends Startable, Lockable {
List<TopicCoderFilterConfiguration> decoderConfigurations,
List<TopicCoderFilterConfiguration> encoderConfigurations)
throws IllegalArgumentException, LinkageError, Exception;
+
+ /**
+ * gets the classnames of facts as well as the current count
+ * @param sessionName the session name
+ * @return map of class to count
+ */
+ public Map<String,Integer> factClassNames(String sessionName) throws IllegalArgumentException;
+
+ /**
+ * gets the count of facts for a given session
+ * @param sessionName the session name
+ * @return the fact count
+ * @throws IllegalArgumentException
+ */
+ public long factCount(String sessionName) throws IllegalArgumentException;
+ /**
+ * gets all the facts of a given class for a given session
+ *
+ * @param sessionName the session identifier
+ * @param className the class type
+ * @return the list of facts returned by the query
+ */
+ public List<Object> facts(String sessionName, String className);
+
+ /**
+ * gets the facts associated with a query for a give session for a given queried entity
+ *
+ * @param sessionName the session
+ * @param queryName the query identifier
+ * @param queriedEntity the queried entity
+ * @return list of facts returned by the query
+ */
+ public List<Object> factQuery(String sessionName, String queryName, String queriedEntity);
/**
* halts and permanently releases all resources
@@ -165,6 +205,4 @@ public interface DroolsController extends Startable, Lockable {
*/
public static final DroolsControllerFactory factory =
new IndexedDroolsControllerFactory();
-
-
}
diff --git a/policy-management/src/main/java/org/openecomp/policy/drools/controller/internal/MavenDroolsController.java b/policy-management/src/main/java/org/openecomp/policy/drools/controller/internal/MavenDroolsController.java
index 76bc5151..62ad6843 100644
--- a/policy-management/src/main/java/org/openecomp/policy/drools/controller/internal/MavenDroolsController.java
+++ b/policy-management/src/main/java/org/openecomp/policy/drools/controller/internal/MavenDroolsController.java
@@ -21,10 +21,17 @@
package org.openecomp.policy.drools.controller.internal;
import java.util.ArrayList;
+import java.util.Collection;
+import java.util.HashMap;
import java.util.List;
+import java.util.Map;
import org.apache.commons.collections4.queue.CircularFifoQueue;
-
+import org.drools.core.ClassObjectFilter;
+import org.kie.api.runtime.KieSession;
+import org.kie.api.runtime.rule.FactHandle;
+import org.kie.api.runtime.rule.QueryResults;
+import org.kie.api.runtime.rule.QueryResultsRow;
import org.openecomp.policy.common.logging.eelf.MessageCodes;
import org.openecomp.policy.common.logging.flexlogger.FlexLogger;
import org.openecomp.policy.common.logging.flexlogger.Logger;
@@ -40,6 +47,7 @@ import org.openecomp.policy.drools.protocol.coders.TopicCoderFilterConfiguration
import org.openecomp.policy.drools.protocol.coders.TopicCoderFilterConfiguration.CustomJacksonCoder;
import org.openecomp.policy.drools.protocol.coders.TopicCoderFilterConfiguration.PotentialCoderFilter;
import org.openecomp.policy.drools.utils.ReflectionUtil;
+
import com.fasterxml.jackson.annotation.JsonIgnore;
/**
@@ -647,23 +655,194 @@ public class MavenDroolsController implements DroolsController {
return this.locked;
}
+ /**
+ * gets the policy container
+ * @return the underlying container
+ */
+ @JsonIgnore
+ protected PolicyContainer getContainer() {
+ return this.policyContainer;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
@Override
public List<String> getSessionNames() {
+ return getSessionNames(true);
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public List<String> getCanonicalSessionNames() {
+ return getSessionNames(false);
+ }
+
+ /**
+ * get session names
+ * @param abbreviated true for the short form, otherwise the long form
+ * @return session names
+ */
+ protected List<String> getSessionNames(boolean abbreviated) {
List<String> sessionNames = new ArrayList<String>();
try {
for (PolicySession session: this.policyContainer.getPolicySessions()) {
- sessionNames.add(session.getFullName());
+ if (abbreviated)
+ sessionNames.add(session.getName());
+ else
+ sessionNames.add(session.getFullName());
}
} catch (Exception e) {
- logger.warn(MessageCodes.EXCEPTION_ERROR, e,
- "Can't retrieve POLICY-CORE sessions: " + e.getMessage(),
- this.toString());
+ logger.warn("Can't retrieve CORE sessions: " + e.getMessage(), e);
sessionNames.add(e.getMessage());
}
return sessionNames;
}
/**
+ * provides the underlying core layer container sessions
+ *
+ * @return the attached Policy Container
+ */
+ protected List<PolicySession> getSessions() {
+ List<PolicySession> sessions = new ArrayList<PolicySession>();
+ sessions.addAll(this.policyContainer.getPolicySessions());
+ return sessions;
+ }
+
+ /**
+ * provides the underlying core layer container session with name sessionName
+ *
+ * @param sessionName session name
+ * @return the attached Policy Container
+ * @throws IllegalArgumentException when an invalid session name is provided
+ * @throws IllegalStateException when the drools controller is in an invalid state
+ */
+ protected PolicySession getSession(String sessionName) {
+ if (sessionName == null || sessionName.isEmpty())
+ throw new IllegalArgumentException("A Session Name must be provided");
+
+ List<PolicySession> sessions = this.getSessions();
+ for (PolicySession session : sessions) {
+ if (sessionName.equals(session.getName()) || sessionName.equals(session.getName()))
+ return session;
+ }
+
+ throw new IllegalArgumentException("Invalid Session Name: " + sessionName);
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public Map<String,Integer> factClassNames(String sessionName) throws IllegalArgumentException {
+ if (sessionName == null || sessionName.isEmpty())
+ throw new IllegalArgumentException("Invalid Session Name: " + sessionName);
+
+ // List<String> classNames = new ArrayList<>();
+ Map<String,Integer> classNames = new HashMap<>();
+
+ PolicySession session = getSession(sessionName);
+ KieSession kieSession = session.getKieSession();
+
+ Collection<FactHandle> facts = session.getKieSession().getFactHandles();
+ for (FactHandle fact : facts) {
+ try {
+ String className = kieSession.getObject(fact).getClass().getName();
+ if (classNames.containsKey(className))
+ classNames.put(className, classNames.get(className) + 1);
+ else
+ classNames.put(className, 1);
+ } catch (Exception e) {
+ if (logger.isInfoEnabled())
+ logger.info("Object cannot be retrieved from fact: " + fact);
+ }
+ }
+
+ return classNames;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public long factCount(String sessionName) throws IllegalArgumentException {
+ if (sessionName == null || sessionName.isEmpty())
+ throw new IllegalArgumentException("Invalid Session Name: " + sessionName);
+
+ PolicySession session = getSession(sessionName);
+ return session.getKieSession().getFactCount();
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public List<Object> facts(String sessionName, String className) {
+ if (sessionName == null || sessionName.isEmpty())
+ throw new IllegalArgumentException("Invalid Session Name: " + sessionName);
+
+ if (className == null || className.isEmpty())
+ throw new IllegalArgumentException("Invalid Class Name: " + className);
+
+ Class<?> factClass =
+ ReflectionUtil.fetchClass(this.policyContainer.getClassLoader(), className);
+ if (factClass == null)
+ throw new IllegalArgumentException("Class cannot be fetched in model's classloader: " + className);
+
+ PolicySession session = getSession(sessionName);
+ KieSession kieSession = session.getKieSession();
+
+ List<Object> factObjects = new ArrayList<>();
+
+ Collection<FactHandle> factHandles = kieSession.getFactHandles(new ClassObjectFilter(factClass));
+ for (FactHandle factHandle : factHandles) {
+ try {
+ factObjects.add(kieSession.getObject(factHandle));
+ } catch (Exception e) {
+ if (logger.isInfoEnabled())
+ logger.info("Object cannot be retrieved from fact: " + factHandle);
+ }
+ }
+
+ return factObjects;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public List<Object> factQuery(String sessionName, String queryName, String queriedEntity) {
+ if (sessionName == null || sessionName.isEmpty())
+ throw new IllegalArgumentException("Invalid Session Name: " + sessionName);
+
+ if (queryName == null || queryName.isEmpty())
+ throw new IllegalArgumentException("Invalid Query Name: " + queryName);
+
+ if (queriedEntity == null || queriedEntity.isEmpty())
+ throw new IllegalArgumentException("Invalid Queried Entity: " + queriedEntity);
+
+ PolicySession session = getSession(sessionName);
+ KieSession kieSession = session.getKieSession();
+
+ List<Object> factObjects = new ArrayList<>();
+
+ QueryResults queryResults = kieSession.getQueryResults(queryName);
+ for (QueryResultsRow row : queryResults) {
+ try {
+ factObjects.add(row.get(queriedEntity));
+ } catch (Exception e) {
+ if (logger.isInfoEnabled())
+ logger.info("Object cannot be retrieved from fact: " + row);
+ }
+ }
+
+ return factObjects;
+ }
+
+ /**
* {@inheritDoc}
*/
@Override
diff --git a/policy-management/src/main/java/org/openecomp/policy/drools/controller/internal/NullDroolsController.java b/policy-management/src/main/java/org/openecomp/policy/drools/controller/internal/NullDroolsController.java
index f0c0f474..ac07bb7d 100644
--- a/policy-management/src/main/java/org/openecomp/policy/drools/controller/internal/NullDroolsController.java
+++ b/policy-management/src/main/java/org/openecomp/policy/drools/controller/internal/NullDroolsController.java
@@ -21,7 +21,9 @@
package org.openecomp.policy.drools.controller.internal;
import java.util.ArrayList;
+import java.util.HashMap;
import java.util.List;
+import java.util.Map;
import org.openecomp.policy.drools.controller.DroolsController;
import org.openecomp.policy.drools.event.comm.TopicSink;
@@ -31,16 +33,6 @@ import org.openecomp.policy.drools.protocol.coders.TopicCoderFilterConfiguration
* no-op Drools Controller
*/
public class NullDroolsController implements DroolsController {
-
- /**
- * empty cached events
- */
- protected static final String[] emptyRecentEvents = new String[0];
-
- /**
- * empty session names
- */
- protected static final List<String> emptySessionNames = new ArrayList<String>();
/**
* {@inheritDoc}
@@ -128,7 +120,7 @@ public class NullDroolsController implements DroolsController {
@Override
public String getVersion() {
return NO_VERSION;
- }
+ }
/**
* {@inheritDoc}
@@ -142,6 +134,14 @@ public class NullDroolsController implements DroolsController {
* {@inheritDoc}
*/
@Override
+ public List<String> getCanonicalSessionNames() {
+ return new ArrayList<String>();
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
public boolean offer(String topic, String event) {
return false;
}
@@ -160,7 +160,7 @@ public class NullDroolsController implements DroolsController {
*/
@Override
public Object[] getRecentSourceEvents() {
- return NullDroolsController.emptyRecentEvents;
+ return new String[0];
}
/**
@@ -168,7 +168,7 @@ public class NullDroolsController implements DroolsController {
*/
@Override
public String[] getRecentSinkEvents() {
- return NullDroolsController.emptyRecentEvents;
+ return new String[0];
}
/**
@@ -216,4 +216,36 @@ public class NullDroolsController implements DroolsController {
throw new IllegalArgumentException(this.getClass().getCanonicalName() + " invoked");
}
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public Map<String, Integer> factClassNames(String sessionName) throws IllegalArgumentException {
+ return new HashMap<String,Integer>();
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public long factCount(String sessionName) throws IllegalArgumentException {
+ return 0;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public List<Object> facts(String sessionName, String className) {
+ return new ArrayList<Object>();
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public List<Object> factQuery(String sessionName, String queryName, String queriedEntity) {
+ return new ArrayList<Object>();
+ }
+
}
diff --git a/policy-management/src/main/java/org/openecomp/policy/drools/protocol/coders/EventProtocolCoder.java b/policy-management/src/main/java/org/openecomp/policy/drools/protocol/coders/EventProtocolCoder.java
index 8f8a4ba7..d82b3724 100644
--- a/policy-management/src/main/java/org/openecomp/policy/drools/protocol/coders/EventProtocolCoder.java
+++ b/policy-management/src/main/java/org/openecomp/policy/drools/protocol/coders/EventProtocolCoder.java
@@ -1075,7 +1075,7 @@ abstract class GenericEventProtocolCoder {
* @throws UnsupportedOperationException if the operation cannot be performed
*/
public String encode(String topic, Object encodedClass)
- throws IllegalArgumentException, IllegalArgumentException, UnsupportedOperationException {
+ throws IllegalArgumentException, IllegalStateException, UnsupportedOperationException {
if (encodedClass == null) {
throw new IllegalArgumentException("Invalid encoded class");
@@ -1090,11 +1090,20 @@ abstract class GenericEventProtocolCoder {
encodedClass);
List<DroolsController> droolsControllers = droolsCreators(topic, encodedClass);
+
+ if (droolsControllers.isEmpty()) {
+ if (logger.isWarnEnabled())
+ logger.warn("No Drool Controllers for: " + topic + ":" +
+ encodedClass.getClass().getCanonicalName() + ":" +
+ droolsControllers + " IN " + this);
+ throw new IllegalArgumentException("Invalid Topic: " + topic);
+ }
+
if (droolsControllers.size() > 1) {
- // unexpected
- logger.warn("MULTIPLE DROOLS CONTROLLERS FOUND for: " + topic + ":" +
- encodedClass.getClass().getCanonicalName() + ":" +
- droolsControllers + " IN " + this);
+ if (logger.isWarnEnabled())
+ logger.warn("MULTIPLE DROOLS CONTROLLERS FOUND for: " + topic + ":" +
+ encodedClass.getClass().getCanonicalName() + ":" +
+ droolsControllers + " IN " + this);
// continue
}
@@ -1376,8 +1385,16 @@ abstract class GenericEventProtocolCoder {
}
List<DroolsController> droolsControllers = droolsCreators(topic, fact);
+
+ if (droolsControllers.isEmpty()) {
+ if (logger.isWarnEnabled())
+ logger.warn("No Drool Controllers for: " + topic + ":" +
+ fact.getClass().getCanonicalName() + ":" +
+ droolsControllers + " IN " + this);
+ throw new IllegalArgumentException("Invalid Topic: " + topic);
+ }
+
if (droolsControllers.size() > 1) {
- // unexpected
logger.warn("MULTIPLE DROOLS CONTROLLERS FOUND for: " + topic + ":" +
fact.getClass().getCanonicalName() + ":" +
droolsControllers + " IN " + this);
diff --git a/policy-management/src/main/java/org/openecomp/policy/drools/server/restful/RestManager.java b/policy-management/src/main/java/org/openecomp/policy/drools/server/restful/RestManager.java
index 48e6313a..cb5d3688 100644
--- a/policy-management/src/main/java/org/openecomp/policy/drools/server/restful/RestManager.java
+++ b/policy-management/src/main/java/org/openecomp/policy/drools/server/restful/RestManager.java
@@ -405,16 +405,94 @@ public class RestManager {
build();
}
- public DroolsController getDroolsController(String controllerName) throws IllegalArgumentException {
- PolicyController controller = PolicyController.factory.get(controllerName);
- if (controller == null)
- throw new IllegalArgumentException(controllerName + " does not exist");
-
- DroolsController drools = controller.getDrools();
- if (drools == null)
- throw new IllegalArgumentException(controllerName + " has no drools configuration");
-
- return drools;
+ @GET
+ @Path("engine/controllers/{controllerName}/drools")
+ @Produces(MediaType.APPLICATION_JSON)
+ public Response drools(@PathParam("controllerName") String controllerName) {
+ try {
+ DroolsController drools = getDroolsController(controllerName);
+ return Response.status(Response.Status.OK).
+ entity(drools).
+ build();
+ } catch (IllegalArgumentException | IllegalStateException e) {
+ logger.warn(MessageCodes.EXCEPTION_ERROR, e,
+ controllerName, this.toString());
+ return Response.status(Response.Status.BAD_REQUEST).
+ entity(new Error(e.getMessage())).
+ build();
+ }
+ }
+
+ @GET
+ @Path("engine/controllers/{controllerName}/drools/facts/{sessionName}")
+ @Produces(MediaType.APPLICATION_JSON)
+ public Response droolsFacts(@DefaultValue("false") @QueryParam("count") boolean count,
+ @PathParam("controllerName") String controllerName,
+ @PathParam("sessionName") String sessionName) {
+ try {
+ DroolsController drools = getDroolsController(controllerName);
+ if (!count)
+ return Response.status(Response.Status.OK).
+ entity(drools.factClassNames(sessionName)).
+ build();
+ else
+ return Response.status(Response.Status.OK).
+ entity(new Long(drools.factCount(sessionName))).
+ build();
+ } catch (IllegalArgumentException | IllegalStateException e) {
+ logger.warn(MessageCodes.EXCEPTION_ERROR, e,
+ controllerName, this.toString());
+ return Response.status(Response.Status.BAD_REQUEST).
+ entity(new Error(e.getMessage())).
+ build();
+ }
+ }
+
+ @GET
+ @Path("engine/controllers/{controllerName}/drools/facts/{sessionName}/{className}")
+ @Produces(MediaType.APPLICATION_JSON)
+ public Response droolsFacts(@DefaultValue("false") @QueryParam("count") boolean count,
+ @PathParam("controllerName") String controllerName,
+ @PathParam("sessionName") String sessionName,
+ @PathParam("className") String className) {
+ try {
+ DroolsController drools = getDroolsController(controllerName);
+ List<Object> facts = drools.facts(sessionName, className);
+ if (!count)
+ return Response.status(Response.Status.OK).entity(facts).build();
+ else
+ return Response.status(Response.Status.OK).entity(facts.size()).build();
+ } catch (IllegalArgumentException | IllegalStateException e) {
+ logger.warn(MessageCodes.EXCEPTION_ERROR, e,
+ controllerName, this.toString());
+ return Response.status(Response.Status.BAD_REQUEST).
+ entity(new Error(e.getMessage())).
+ build();
+ }
+ }
+
+ @GET
+ @Path("engine/controllers/{controllerName}/drools/facts/{sessionName}/{queryName}/{queriedEntity}")
+ @Produces(MediaType.APPLICATION_JSON)
+ public Response droolsFacts(@DefaultValue("false") @QueryParam("count") boolean count,
+ @PathParam("controllerName") String controllerName,
+ @PathParam("sessionName") String sessionName,
+ @PathParam("queryName") String queryName,
+ @PathParam("queriedEntity") String queriedEntity) {
+ try {
+ DroolsController drools = getDroolsController(controllerName);
+ List<Object> facts = drools.factQuery(sessionName, queryName, queriedEntity);
+ if (!count)
+ return Response.status(Response.Status.OK).entity(facts).build();
+ else
+ return Response.status(Response.Status.OK).entity(facts.size()).build();
+ } catch (IllegalArgumentException | IllegalStateException e) {
+ logger.warn(MessageCodes.EXCEPTION_ERROR, e,
+ controllerName, this.toString());
+ return Response.status(Response.Status.BAD_REQUEST).
+ entity(new Error(e.getMessage())).
+ build();
+ }
}
@GET
@@ -1134,6 +1212,19 @@ public class RestManager {
build();
}
+
+ protected DroolsController getDroolsController(String controllerName) throws IllegalArgumentException {
+ PolicyController controller = PolicyController.factory.get(controllerName);
+ if (controller == null)
+ throw new IllegalArgumentException(controllerName + " does not exist");
+
+ DroolsController drools = controller.getDrools();
+ if (drools == null)
+ throw new IllegalArgumentException(controllerName + " has no drools configuration");
+
+ return drools;
+ }
+
/*
* Helper classes for aggregation of results
*/