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authorramverma <ram.krishna.verma@ericsson.com>2018-06-11 11:27:47 +0100
committerramverma <ram.krishna.verma@ericsson.com>2018-06-11 17:17:24 +0100
commitd48fd41c995cca495a945da4c183a70bff765dea (patch)
tree38b803637a13c5af6afc16ff7e2b7a2c6b168fc3 /plugins/plugins-executor/plugins-executor-jython
parentd0746b062ca6b85eae756db6eb6c4dead037a35a (diff)
Adding plugin-executor module to apex-pdp
Change-Id: I711eaaff3707aa6398c26f1a124fedeb1d0e11f4 Issue-ID: POLICY-862 Signed-off-by: ramverma <ram.krishna.verma@ericsson.com>
Diffstat (limited to 'plugins/plugins-executor/plugins-executor-jython')
-rw-r--r--plugins/plugins-executor/plugins-executor-jython/pom.xml44
-rw-r--r--plugins/plugins-executor/plugins-executor-jython/src/main/java/org/onap/policy/apex/plugins/executor/jython/JythonExecutorParameters.java42
-rw-r--r--plugins/plugins-executor/plugins-executor-jython/src/main/java/org/onap/policy/apex/plugins/executor/jython/JythonStateFinalizerExecutor.java131
-rw-r--r--plugins/plugins-executor/plugins-executor-jython/src/main/java/org/onap/policy/apex/plugins/executor/jython/JythonTaskExecutor.java147
-rw-r--r--plugins/plugins-executor/plugins-executor-jython/src/main/java/org/onap/policy/apex/plugins/executor/jython/JythonTaskSelectExecutor.java150
-rw-r--r--plugins/plugins-executor/plugins-executor-jython/src/main/java/org/onap/policy/apex/plugins/executor/jython/package-info.java30
6 files changed, 544 insertions, 0 deletions
diff --git a/plugins/plugins-executor/plugins-executor-jython/pom.xml b/plugins/plugins-executor/plugins-executor-jython/pom.xml
new file mode 100644
index 000000000..8b246561b
--- /dev/null
+++ b/plugins/plugins-executor/plugins-executor-jython/pom.xml
@@ -0,0 +1,44 @@
+<!--
+ ============LICENSE_START=======================================================
+ Copyright (C) 2018 Ericsson. 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.
+
+ SPDX-License-Identifier: Apache-2.0
+ ============LICENSE_END=========================================================
+-->
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+ xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+ <modelVersion>4.0.0</modelVersion>
+ <parent>
+ <groupId>org.onap.policy.apex-pdp.plugins.plugins-executor</groupId>
+ <artifactId>plugins-executor</artifactId>
+ <version>2.0.0-SNAPSHOT</version>
+ </parent>
+
+ <artifactId>plugins-executor-jython</artifactId>
+ <name>${project.artifactId}</name>
+ <description>[${project.parent.artifactId}] Plugin for execution of Jython logic in Apex</description>
+
+ <properties>
+ <apex-plugins-executor-jython-dir>${project.basedir}/src</apex-plugins-executor-jython-dir>
+ </properties>
+
+ <dependencies>
+ <dependency>
+ <groupId>org.python</groupId>
+ <artifactId>jython</artifactId>
+ <version>2.2.1</version>
+ </dependency>
+ </dependencies>
+</project> \ No newline at end of file
diff --git a/plugins/plugins-executor/plugins-executor-jython/src/main/java/org/onap/policy/apex/plugins/executor/jython/JythonExecutorParameters.java b/plugins/plugins-executor/plugins-executor-jython/src/main/java/org/onap/policy/apex/plugins/executor/jython/JythonExecutorParameters.java
new file mode 100644
index 000000000..7a22013f1
--- /dev/null
+++ b/plugins/plugins-executor/plugins-executor-jython/src/main/java/org/onap/policy/apex/plugins/executor/jython/JythonExecutorParameters.java
@@ -0,0 +1,42 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2016-2018 Ericsson. 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.apex.plugins.executor.jython;
+
+import org.onap.policy.apex.core.engine.ExecutorParameters;
+
+/**
+ * This class provides executor parameters for the Jython Executor plugin. It specifies the classes that provide the
+ * Jython implementations of the abstract classes {@link org.onap.policy.apex.core.engine.executor.TaskExecutor},
+ * {@link org.onap.policy.apex.core.engine.executor.TaskSelectExecutor}, and
+ * {@link org.onap.policy.apex.core.engine.executor.StateFinalizerExecutor}.
+ *
+ * @author Liam Fallon (liam.fallon@ericsson.com)
+ */
+public class JythonExecutorParameters extends ExecutorParameters {
+ /**
+ * Constructor that sets the abstract implementation classes.
+ */
+ public JythonExecutorParameters() {
+ this.setTaskExecutorPluginClass(JythonTaskExecutor.class.getCanonicalName());
+ this.setTaskSelectionExecutorPluginClass(JythonTaskSelectExecutor.class.getCanonicalName());
+ this.setStateFinalizerExecutorPluginClass(JythonStateFinalizerExecutor.class.getCanonicalName());
+ }
+}
diff --git a/plugins/plugins-executor/plugins-executor-jython/src/main/java/org/onap/policy/apex/plugins/executor/jython/JythonStateFinalizerExecutor.java b/plugins/plugins-executor/plugins-executor-jython/src/main/java/org/onap/policy/apex/plugins/executor/jython/JythonStateFinalizerExecutor.java
new file mode 100644
index 000000000..26512b52d
--- /dev/null
+++ b/plugins/plugins-executor/plugins-executor-jython/src/main/java/org/onap/policy/apex/plugins/executor/jython/JythonStateFinalizerExecutor.java
@@ -0,0 +1,131 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2016-2018 Ericsson. 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.apex.plugins.executor.jython;
+
+import java.util.Map;
+
+import org.onap.policy.apex.context.ContextException;
+import org.onap.policy.apex.core.engine.executor.StateFinalizerExecutor;
+import org.onap.policy.apex.core.engine.executor.exception.StateMachineException;
+import org.python.core.Py;
+import org.python.core.PyCode;
+import org.python.core.PyException;
+import org.python.util.PythonInterpreter;
+import org.slf4j.ext.XLogger;
+import org.slf4j.ext.XLoggerFactory;
+
+/**
+ * The Class JythonStateFinalizerExecutor is the state finalizer executor for state finalizer logic written in Jython It
+ * is unlikely that this is thread safe.
+ *
+ * @author Liam Fallon (liam.fallon@ericsson.com)
+ */
+public class JythonStateFinalizerExecutor extends StateFinalizerExecutor {
+ // Logger for this class
+ private static final XLogger LOGGER = XLoggerFactory.getXLogger(JythonStateFinalizerExecutor.class);
+
+ // The Jython interpreter
+ private final PythonInterpreter interpreter = new PythonInterpreter();
+ private PyCode compiled = null;
+
+ /**
+ * Prepares the state finalizer for processing.
+ *
+ * @throws StateMachineException thrown when a state machine execution error occurs
+ */
+ @Override
+ public void prepare() throws StateMachineException {
+ interpreter.setErr(System.err);
+ interpreter.setOut(System.out);
+
+ // Call generic prepare logic
+ super.prepare();
+ try {
+ synchronized (Py.class) {
+ compiled = Py.compile_flags(getSubject().getLogic(), "<" + getSubject().getKey().toString() + ">",
+ "exec", null);
+ }
+ } catch (final PyException e) {
+ LOGGER.warn("failed to compile Jython code for state finalizer " + getSubject().getKey(), e);
+ throw new StateMachineException(
+ "failed to compile Jython code for state finalizer " + getSubject().getKey(), e);
+ }
+
+ }
+
+ /**
+ * Executes the executor for the state finalizer logic in a sequential manner.
+ *
+ * @param executionID the execution ID for the current APEX policy execution
+ * @param incomingFields the incoming fields for finalisation
+ * @return The state output for the state
+ * @throws StateMachineException on an execution error
+ * @throws ContextException on context errors
+ */
+ @Override
+ public String execute(final long executionID, final Map<String, Object> incomingFields)
+ throws StateMachineException, ContextException {
+
+ boolean returnValue = false;
+
+ // Do execution pre work
+ executePre(executionID, incomingFields);
+
+ try {
+
+ // Check and execute the Jython logic
+ /* Precompiled Version */
+ synchronized (Py.class) {
+ // Set up the Jython engine
+ interpreter.set("executor", getExecutionContext());
+ interpreter.exec(compiled);
+ returnValue = (boolean) interpreter.get("returnValue", java.lang.Boolean.class);
+ }
+ /* */
+ } catch (final Exception e) {
+ LOGGER.warn("failed to execute Jython code for state finalizer " + getSubject().getKey(), e);
+ throw new StateMachineException(
+ "failed to execute Jython code for state finalizer " + getSubject().getKey(), e);
+ }
+
+ // Do the execution post work
+ executePost(returnValue);
+
+ // Send back the return event
+ if (returnValue) {
+ return getOutgoing();
+ } else {
+ return null;
+ }
+ }
+
+ /**
+ * Cleans up the state finalizer after processing.
+ *
+ * @throws StateMachineException thrown when a state machine execution error occurs
+ */
+ @Override
+ public void cleanUp() throws StateMachineException {
+ interpreter.cleanup();
+ LOGGER.debug("cleanUp:" + getSubject().getKey() + "," + getSubject().getLogicFlavour() + ","
+ + getSubject().getLogic());
+ }
+}
diff --git a/plugins/plugins-executor/plugins-executor-jython/src/main/java/org/onap/policy/apex/plugins/executor/jython/JythonTaskExecutor.java b/plugins/plugins-executor/plugins-executor-jython/src/main/java/org/onap/policy/apex/plugins/executor/jython/JythonTaskExecutor.java
new file mode 100644
index 000000000..4387a5df7
--- /dev/null
+++ b/plugins/plugins-executor/plugins-executor-jython/src/main/java/org/onap/policy/apex/plugins/executor/jython/JythonTaskExecutor.java
@@ -0,0 +1,147 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2016-2018 Ericsson. 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.apex.plugins.executor.jython;
+
+import java.util.Map;
+
+import org.onap.policy.apex.context.ContextException;
+import org.onap.policy.apex.core.engine.executor.TaskExecutor;
+import org.onap.policy.apex.core.engine.executor.exception.StateMachineException;
+import org.python.core.Py;
+import org.python.core.PyCode;
+import org.python.core.PyException;
+import org.python.util.PythonInterpreter;
+import org.slf4j.ext.XLogger;
+import org.slf4j.ext.XLoggerFactory;
+
+/**
+ * The Class JythonTaskExecutor is the task executor for task logic written in Jython It is unlikely that this is thread
+ * safe.
+ *
+ * @author Liam Fallon (liam.fallon@ericsson.com)
+ */
+public class JythonTaskExecutor extends TaskExecutor {
+ // Logger for this class
+ private static final XLogger LOGGER = XLoggerFactory.getXLogger(JythonTaskExecutor.class);
+
+ // The Jython interpreter
+ private final PythonInterpreter interpreter = new PythonInterpreter();
+ private PyCode compiled = null;
+
+ /**
+ * Prepares the task for processing.
+ *
+ * @throws StateMachineException thrown when a state machine execution error occurs
+ */
+ @Override
+ public void prepare() throws StateMachineException {
+ interpreter.setErr(System.err);
+ interpreter.setOut(System.out);
+
+ // Call generic prepare logic
+ super.prepare();
+ try {
+ synchronized (Py.class) {
+ compiled = Py.compile_flags(getSubject().getTaskLogic().getLogic(),
+ "<" + getSubject().getKey().toString() + ">", "exec", null);
+ }
+ } catch (final PyException e) {
+ LOGGER.warn("failed to compile Jython code for task " + getSubject().getKey().getID(), e);
+ throw new StateMachineException("failed to compile Jython code for task " + getSubject().getKey().getID(),
+ e);
+ }
+
+ }
+
+ /**
+ * Executes the executor for the task in a sequential manner.
+ *
+ * @param executionID the execution ID for the current APEX policy execution
+ * @param incomingFields the incoming fields
+ * @return The outgoing fields
+ * @throws StateMachineException on an execution error
+ * @throws ContextException on context errors
+ */
+ @Override
+ public Map<String, Object> execute(final long executionID, final Map<String, Object> incomingFields)
+ throws StateMachineException, ContextException {
+
+ boolean returnValue = false;
+
+ // Do execution pre work
+ executePre(executionID, incomingFields);
+
+ try {
+
+ // Check and execute the Jython logic
+ /* Precompiled Version */
+ synchronized (Py.class) {
+ // Set up the Jython engine
+ interpreter.set("executor", getExecutionContext());
+ interpreter.exec(compiled);
+ try {
+ final Object ret = interpreter.get("returnValue", java.lang.Boolean.class);
+ if (ret == null) {
+ LOGGER.error("execute: task logic failed to set a return value for task \""
+ + getSubject().getKey().getID() + "\"");
+ throw new StateMachineException("execute: task logic failed to set a return value for task \""
+ + getSubject().getKey().getID() + "\"");
+ }
+ returnValue = (Boolean) ret;
+ } catch (NullPointerException | ClassCastException e) {
+ LOGGER.error("execute: task selection logic failed to set a correct return value for state \""
+ + getSubject().getKey().getID() + "\"", e);
+ throw new StateMachineException(
+ "execute: task selection logic failed to set a return value for state \""
+ + getSubject().getKey().getID() + "\"",
+ e);
+ }
+ }
+ /* */
+ } catch (final Exception e) {
+ LOGGER.warn("failed to execute Jython code for task " + getSubject().getKey().getID(), e);
+ throw new StateMachineException("failed to execute Jython code for task " + getSubject().getKey().getID(),
+ e);
+ }
+
+ // Do the execution post work
+ executePost(returnValue);
+
+ // Send back the return event
+ if (returnValue) {
+ return getOutgoing();
+ } else {
+ return null;
+ }
+ }
+
+ /**
+ * Cleans up the task after processing.
+ *
+ * @throws StateMachineException thrown when a state machine execution error occurs
+ */
+ @Override
+ public void cleanUp() throws StateMachineException {
+ interpreter.cleanup();
+ LOGGER.debug("cleanUp:" + getSubject().getKey().getID() + "," + getSubject().getTaskLogic().getLogicFlavour()
+ + "," + getSubject().getTaskLogic().getLogic());
+ }
+}
diff --git a/plugins/plugins-executor/plugins-executor-jython/src/main/java/org/onap/policy/apex/plugins/executor/jython/JythonTaskSelectExecutor.java b/plugins/plugins-executor/plugins-executor-jython/src/main/java/org/onap/policy/apex/plugins/executor/jython/JythonTaskSelectExecutor.java
new file mode 100644
index 000000000..cf94793ff
--- /dev/null
+++ b/plugins/plugins-executor/plugins-executor-jython/src/main/java/org/onap/policy/apex/plugins/executor/jython/JythonTaskSelectExecutor.java
@@ -0,0 +1,150 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2016-2018 Ericsson. 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.apex.plugins.executor.jython;
+
+import org.onap.policy.apex.context.ContextException;
+import org.onap.policy.apex.core.engine.event.EnEvent;
+import org.onap.policy.apex.core.engine.executor.TaskSelectExecutor;
+import org.onap.policy.apex.core.engine.executor.exception.StateMachineException;
+import org.onap.policy.apex.model.basicmodel.concepts.AxArtifactKey;
+import org.python.core.Py;
+import org.python.core.PyCode;
+import org.python.core.PyException;
+import org.python.util.PythonInterpreter;
+import org.slf4j.ext.XLogger;
+import org.slf4j.ext.XLoggerFactory;
+
+/**
+ * The Class JythonTaskSelectExecutor is the task selection executor for task selection logic written in Jython It is
+ * unlikely that this is thread safe.
+ *
+ * @author Liam Fallon (liam.fallon@ericsson.com)
+ */
+public class JythonTaskSelectExecutor extends TaskSelectExecutor {
+ private static final XLogger LOGGER = XLoggerFactory.getXLogger(JythonTaskSelectExecutor.class);
+
+ // The Jython interpreter
+ private final PythonInterpreter interpreter = new PythonInterpreter();
+ private PyCode compiled = null;
+
+ /**
+ * Prepares the task for processing.
+ *
+ * @throws StateMachineException thrown when a state machine execution error occurs
+ */
+ @Override
+ public void prepare() throws StateMachineException {
+ interpreter.setErr(System.err);
+ interpreter.setOut(System.out);
+
+ // Call generic prepare logic
+ super.prepare();
+ try {
+ synchronized (Py.class) {
+ compiled = Py.compile_flags(getSubject().getTaskSelectionLogic().getLogic(),
+ "<" + getSubject().getKey().toString() + ">", "exec", null);
+ }
+ } catch (final PyException e) {
+ LOGGER.warn("failed to compile Jython code for task selection logic in " + getSubject().getKey().getID(),
+ e);
+ throw new StateMachineException(
+ "failed to compile Jython code for task selection logic in " + getSubject().getKey().getID(), e);
+ }
+
+ }
+
+ /**
+ * Executes the executor for the task in a sequential manner.
+ *
+ * @param executionID the execution ID for the current APEX policy execution
+ * @param incomingEvent the incoming event
+ * @return The outgoing event
+ * @throws StateMachineException on an execution error
+ * @throws ContextException on context errors
+ */
+ @Override
+ public AxArtifactKey execute(final long executionID, final EnEvent incomingEvent)
+ throws StateMachineException, ContextException {
+
+ boolean returnValue = false;
+
+ // Do execution pre work
+ executePre(executionID, incomingEvent);
+
+ try {
+ // Check and execute the Jython logic
+ /* Precompiled Version */
+ synchronized (Py.class) {
+ // Set up the Jython engine
+ interpreter.set("executor", getExecutionContext());
+ interpreter.exec(compiled);
+
+ try {
+ final Object ret = interpreter.get("returnValue", java.lang.Boolean.class);
+ if (ret == null) {
+ LOGGER.error("execute: task selection logic failed to set a return value for state \""
+ + getSubject().getKey().getID() + "\"");
+ throw new StateMachineException(
+ "execute: task selection logic failed to set a return value for state \""
+ + getSubject().getKey().getID() + "\"");
+ }
+ returnValue = (Boolean) ret;
+ } catch (NullPointerException | ClassCastException e) {
+ LOGGER.error("execute: task selection logic failed to set a correct return value for state \""
+ + getSubject().getKey().getID() + "\"", e);
+ throw new StateMachineException(
+ "execute: task selection logic failed to set a return value for state \""
+ + getSubject().getKey().getID() + "\"",
+ e);
+ }
+ }
+ /* */
+ } catch (final Exception e) {
+ LOGGER.warn("failed to execute Jython code for task selection logic in " + getSubject().getKey().getID(),
+ e);
+ throw new StateMachineException(
+ "failed to execute Jython code for task selection logic in " + getSubject().getKey().getID(), e);
+ }
+
+ // Do the execution post work
+ executePost(returnValue);
+
+ // Send back the return event
+ if (returnValue) {
+ return getOutgoing();
+ } else {
+ return null;
+ }
+ }
+
+ /**
+ * Cleans up the task after processing.
+ *
+ * @throws StateMachineException thrown when a state machine execution error occurs
+ */
+ @Override
+ public void cleanUp() throws StateMachineException {
+ interpreter.cleanup();
+ LOGGER.debug("cleanUp:" + getSubject().getKey().getID() + ","
+ + getSubject().getTaskSelectionLogic().getLogicFlavour() + ","
+ + getSubject().getTaskSelectionLogic().getLogic());
+ }
+}
diff --git a/plugins/plugins-executor/plugins-executor-jython/src/main/java/org/onap/policy/apex/plugins/executor/jython/package-info.java b/plugins/plugins-executor/plugins-executor-jython/src/main/java/org/onap/policy/apex/plugins/executor/jython/package-info.java
new file mode 100644
index 000000000..f88ff75ef
--- /dev/null
+++ b/plugins/plugins-executor/plugins-executor-jython/src/main/java/org/onap/policy/apex/plugins/executor/jython/package-info.java
@@ -0,0 +1,30 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2016-2018 Ericsson. 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+/**
+ * Implements the Jython executor plugin for APEX, providing extensions of the abstract classes
+ * {@link org.onap.policy.apex.core.engine.executor.TaskExecutor},
+ * {@link org.onap.policy.apex.core.engine.executor.TaskSelectExecutor}, and
+ * {@link org.onap.policy.apex.core.engine.executor.StateFinalizerExecutor}.
+ *
+ * @author Liam Fallon (liam.fallon@ericsson.com)
+ */
+
+package org.onap.policy.apex.plugins.executor.jython;