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;
24 import java.util.TreeSet;
26 import org.jruby.embed.EmbedEvalUnit;
27 import org.jruby.embed.LocalContextScope;
28 import org.jruby.embed.LocalVariableBehavior;
29 import org.jruby.embed.ScriptingContainer;
30 import org.jruby.runtime.builtin.IRubyObject;
31 import org.onap.policy.apex.context.ContextException;
32 import org.onap.policy.apex.core.engine.event.EnEvent;
33 import org.onap.policy.apex.core.engine.executor.TaskSelectExecutor;
34 import org.onap.policy.apex.core.engine.executor.exception.StateMachineException;
35 import org.onap.policy.apex.model.basicmodel.concepts.AxArtifactKey;
36 import org.slf4j.ext.XLogger;
37 import org.slf4j.ext.XLoggerFactory;
40 * The Class JrubyTaskSelectExecutor is the task selection executor for task selection logic written in JRuby.
42 * @author Liam Fallon (liam.fallon@ericsson.com)
44 public class JrubyTaskSelectExecutor extends TaskSelectExecutor {
45 // Logger for this class
46 private static final XLogger LOGGER = XLoggerFactory.getXLogger(JrubyTaskSelectExecutor.class);
49 private ScriptingContainer container =
50 new ScriptingContainer(LocalContextScope.CONCURRENT, LocalVariableBehavior.TRANSIENT, true);
51 private EmbedEvalUnit parsedjruby = null;
54 * Prepares the task for processing.
56 * @throws StateMachineException thrown when a state machine execution error occurs
59 public void prepare() throws StateMachineException {
60 // Call generic prepare logic
63 // Set up the JRuby engine
64 container = (container == null)
65 ? new ScriptingContainer(LocalContextScope.CONCURRENT, LocalVariableBehavior.TRANSIENT, true)
67 container.put("executor", getExecutionContext()); // needed for compile as a placeholder
68 parsedjruby = container.parse(getSubject().getTaskSelectionLogic().getLogic());
72 * Executes the executor for the task in a sequential manner.
74 * @param executionId the execution ID for the current APEX policy execution
75 * @param incomingEvent the incoming event
76 * @return The outgoing event
77 * @throws StateMachineException on an execution error
78 * @throws ContextException on context errors
81 public AxArtifactKey execute(final long executionId, final EnEvent incomingEvent)
82 throws StateMachineException, ContextException {
83 // Do execution pre work
84 executePre(executionId, incomingEvent);
86 // Check and execute the JRuby logic
87 container.put("executor", getExecutionContext());
89 /* Precompiled version */
90 boolean returnValue = false;
91 final IRubyObject ret = parsedjruby.run();
93 final Boolean retbool = ret.toJava(java.lang.Boolean.class);
94 if (retbool != null) {
99 // Do the execution post work
100 executePost(returnValue);
102 // Send back the return event
104 return getOutgoing();
111 * Cleans up the task after processing.
113 * @throws StateMachineException thrown when a state machine execution error occurs
116 public void cleanUp() throws StateMachineException {
117 LOGGER.debug("cleanUp:" + getSubject().getKey().getId() + ","
118 + getSubject().getTaskSelectionLogic().getLogicFlavour() + ","
119 + getSubject().getTaskSelectionLogic().getLogic());
120 container.terminate();
125 * Gets the output event set.
127 * @return the output event set
129 public Set<AxArtifactKey> getOutputEventSet() {
130 return new TreeSet<>();