2 * ============LICENSE_START=======================================================
3 * Copyright (C) 2016-2018 Ericsson. All rights reserved.
4 * Modifications Copyright (C) 2019 Nordix Foundation.
5 * ================================================================================
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
10 * http://www.apache.org/licenses/LICENSE-2.0
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
18 * SPDX-License-Identifier: Apache-2.0
19 * ============LICENSE_END=========================================================
22 package org.onap.policy.apex.plugins.executor.jruby;
25 import java.util.Properties;
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.executor.TaskExecutor;
34 import org.onap.policy.apex.core.engine.executor.exception.StateMachineException;
35 import org.slf4j.ext.XLogger;
36 import org.slf4j.ext.XLoggerFactory;
39 * The Class JrubyTaskExecutor is the task executor for task logic written in JRuby.
41 * @author Liam Fallon (liam.fallon@ericsson.com)
43 public class JrubyTaskExecutor extends TaskExecutor {
44 // Logger for this class
45 private static final XLogger LOGGER = XLoggerFactory.getXLogger(JrubyTaskExecutor.class);
48 private ScriptingContainer container = new ScriptingContainer(LocalContextScope.CONCURRENT,
49 LocalVariableBehavior.TRANSIENT, true);
50 private EmbedEvalUnit parsedjruby = null;
53 * Prepares the task for processing.
55 * @throws StateMachineException thrown when a state machine execution error occurs
58 public void prepare() throws StateMachineException {
59 // Call generic prepare logic
62 // Set up the JRuby engine
63 container = (container == null)
64 ? new ScriptingContainer(LocalContextScope.CONCURRENT, LocalVariableBehavior.TRANSIENT, true)
67 // Use the container.setError(System.err) and container.setOutput(System.out) method calls to redirect output
68 // and error to standard output and error for debugging
69 container.put("executor", getExecutionContext()); // needed for the compile
70 parsedjruby = container.parse(getSubject().getTaskLogic().getLogic());
74 * Executes the executor for the task in a sequential manner.
76 * @param executionId the execution ID for the current APEX policy execution
77 * @param executionProperties properties for the current APEX policy execution
78 * @param incomingFields the incoming fields
79 * @return The outgoing fields
80 * @throws StateMachineException on an execution error
81 * @throws ContextException on context errors
84 public Map<String, Object> execute(final long executionId, final Properties executionProperties,
85 final Map<String, Object> incomingFields) throws StateMachineException, ContextException {
86 // Do execution pre work
87 executePre(executionId, executionProperties, incomingFields);
89 // Check and execute the JRuby logic
90 container.put("executor", getExecutionContext());
92 /* Precompiled version */
93 boolean returnValue = false;
94 final IRubyObject ret = parsedjruby.run();
96 final Boolean retbool = ret.toJava(java.lang.Boolean.class);
97 if (retbool != null) {
102 // Do the execution post work
103 executePost(returnValue);
105 // Send back the return event
106 return getOutgoing();
110 * Cleans up the task after processing.
112 * @throws StateMachineException thrown when a state machine execution error occurs
115 public void cleanUp() throws StateMachineException {
116 LOGGER.debug("cleanUp:" + getSubject().getKey().getId() + "," + getSubject().getTaskLogic().getLogicFlavour()
117 + "," + getSubject().getTaskLogic().getLogic());
118 container.terminate();