2 * ============LICENSE_START=======================================================
3 * Copyright (C) 2016-2018 Ericsson. All rights reserved.
4 * ================================================================================
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
17 * SPDX-License-Identifier: Apache-2.0
18 * ============LICENSE_END=========================================================
21 package org.onap.policy.apex.plugins.executor.jruby;
23 import java.util.Properties;
25 import java.util.TreeSet;
27 import org.jruby.embed.EmbedEvalUnit;
28 import org.jruby.embed.LocalContextScope;
29 import org.jruby.embed.LocalVariableBehavior;
30 import org.jruby.embed.ScriptingContainer;
31 import org.jruby.runtime.builtin.IRubyObject;
32 import org.onap.policy.apex.context.ContextException;
33 import org.onap.policy.apex.core.engine.event.EnEvent;
34 import org.onap.policy.apex.core.engine.executor.TaskSelectExecutor;
35 import org.onap.policy.apex.core.engine.executor.exception.StateMachineException;
36 import org.onap.policy.apex.model.basicmodel.concepts.AxArtifactKey;
37 import org.slf4j.ext.XLogger;
38 import org.slf4j.ext.XLoggerFactory;
41 * The Class JrubyTaskSelectExecutor is the task selection executor for task selection logic written in JRuby.
43 * @author Liam Fallon (liam.fallon@ericsson.com)
45 public class JrubyTaskSelectExecutor extends TaskSelectExecutor {
46 // Logger for this class
47 private static final XLogger LOGGER = XLoggerFactory.getXLogger(JrubyTaskSelectExecutor.class);
50 private ScriptingContainer container =
51 new ScriptingContainer(LocalContextScope.CONCURRENT, LocalVariableBehavior.TRANSIENT, true);
52 private EmbedEvalUnit parsedjruby = null;
55 * Prepares the task for processing.
57 * @throws StateMachineException thrown when a state machine execution error occurs
60 public void prepare() throws StateMachineException {
61 // Call generic prepare logic
64 // Set up the JRuby engine
65 container = (container == null)
66 ? new ScriptingContainer(LocalContextScope.CONCURRENT, LocalVariableBehavior.TRANSIENT, true)
68 container.put("executor", getExecutionContext()); // needed for compile as a placeholder
69 parsedjruby = container.parse(getSubject().getTaskSelectionLogic().getLogic());
73 * Executes the executor for the task in a sequential manner.
75 * @param executionId the execution ID for the current APEX policy execution
76 * @param executionProperties properties for the current APEX policy execution
77 * @param incomingEvent the incoming event
78 * @return The outgoing event
79 * @throws StateMachineException on an execution error
80 * @throws ContextException on context errors
83 public AxArtifactKey execute(final long executionId, final Properties executionProperties,
84 final EnEvent incomingEvent) throws StateMachineException, ContextException {
85 // Do execution pre work
86 executePre(executionId, executionProperties, incomingEvent);
88 // Check and execute the JRuby logic
89 container.put("executor", getExecutionContext());
91 /* Precompiled version */
92 boolean returnValue = false;
93 final IRubyObject ret = parsedjruby.run();
95 final Boolean retbool = ret.toJava(java.lang.Boolean.class);
96 if (retbool != null) {
101 // Do the execution post work
102 executePost(returnValue);
104 // Send back the return event
105 return getOutgoing();
109 * Cleans up the task after processing.
111 * @throws StateMachineException thrown when a state machine execution error occurs
114 public void cleanUp() throws StateMachineException {
115 LOGGER.debug("cleanUp:" + getSubject().getKey().getId() + ","
116 + getSubject().getTaskSelectionLogic().getLogicFlavour() + ","
117 + getSubject().getTaskSelectionLogic().getLogic());
118 container.terminate();
123 * Gets the output event set.
125 * @return the output event set
127 public Set<AxArtifactKey> getOutputEventSet() {
128 return new TreeSet<>();