1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
|
/*-
* ============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.jruby;
import java.util.Set;
import java.util.TreeSet;
import org.jruby.embed.EmbedEvalUnit;
import org.jruby.embed.LocalContextScope;
import org.jruby.embed.LocalVariableBehavior;
import org.jruby.embed.ScriptingContainer;
import org.jruby.runtime.builtin.IRubyObject;
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.slf4j.ext.XLogger;
import org.slf4j.ext.XLoggerFactory;
/**
* The Class JrubyTaskSelectExecutor is the task selection executor for task selection logic written in JRuby.
*
* @author Liam Fallon (liam.fallon@ericsson.com)
*/
public class JrubyTaskSelectExecutor extends TaskSelectExecutor {
// Logger for this class
private static final XLogger LOGGER = XLoggerFactory.getXLogger(JrubyTaskSelectExecutor.class);
// Jruby container
private ScriptingContainer container =
new ScriptingContainer(LocalContextScope.CONCURRENT, LocalVariableBehavior.TRANSIENT, true);
private EmbedEvalUnit parsedjruby = null;
/**
* Prepares the task for processing.
*
* @throws StateMachineException thrown when a state machine execution error occurs
*/
@Override
public void prepare() throws StateMachineException {
// Call generic prepare logic
super.prepare();
// Set up the JRuby engine
container = (container == null)
? new ScriptingContainer(LocalContextScope.CONCURRENT, LocalVariableBehavior.TRANSIENT, true)
: container;
container.put("executor", getExecutionContext()); // needed for compile as a placeholder
parsedjruby = container.parse(getSubject().getTaskSelectionLogic().getLogic());
}
/**
* 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 {
// Do execution pre work
executePre(executionID, incomingEvent);
// Check and execute the JRuby logic
container.put("executor", getExecutionContext());
/* Precompiled version */
boolean returnValue = false;
final IRubyObject ret = parsedjruby.run();
if (ret != null) {
final Boolean retbool = (Boolean) ret.toJava(java.lang.Boolean.class);
if (retbool != null) {
returnValue = true;
}
}
// 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 {
LOGGER.debug("cleanUp:" + getSubject().getKey().getId() + ","
+ getSubject().getTaskSelectionLogic().getLogicFlavour() + ","
+ getSubject().getTaskSelectionLogic().getLogic());
container.terminate();
container = null;
}
/**
* Gets the output event set.
*
* @return the output event set
*/
public Set<AxArtifactKey> getOutputEventSet() {
return new TreeSet<>();
}
}
|