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
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
|
/*-
* ============LICENSE_START=======================================================
* Copyright (C) 2016-2018 Ericsson. All rights reserved.
* Modifications Copyright (C) 2019 Nordix Foundation.
* ================================================================================
* 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.core.engine.executor;
import static org.onap.policy.common.utils.validation.Assertions.argumentOfClassNotNull;
import java.util.Map;
import java.util.Properties;
import lombok.NonNull;
import org.onap.policy.apex.context.ContextException;
import org.onap.policy.apex.core.engine.ExecutorParameters;
import org.onap.policy.apex.core.engine.context.ApexInternalContext;
import org.onap.policy.apex.core.engine.executor.context.StateFinalizerExecutionContext;
import org.onap.policy.apex.core.engine.executor.exception.StateMachineException;
import org.onap.policy.apex.model.basicmodel.concepts.AxReferenceKey;
import org.onap.policy.apex.model.policymodel.concepts.AxState;
import org.onap.policy.apex.model.policymodel.concepts.AxStateFinalizerLogic;
import org.slf4j.ext.XLogger;
import org.slf4j.ext.XLoggerFactory;
/**
* This abstract class executes state finalizer logic in a state of an Apex policy and is specialized by classes that
* implement execution of state finalizer logic.
*
* @author Sven van der Meer (sven.van.der.meer@ericsson.com)
* @author Liam Fallon (liam.fallon@ericsson.com)
*/
public abstract class StateFinalizerExecutor
implements Executor<Map<String, Object>, String, AxStateFinalizerLogic, ApexInternalContext> {
// Logger for this class
private static final XLogger LOGGER = XLoggerFactory.getXLogger(StateFinalizerExecutor.class);
// Repeated string constants
private static final String EXECUTE_POST_SFL = "execute-post: state finalizer logic \"";
// Hold the state and context definitions
private Executor<?, ?, ?, ?> parent = null;
private AxState axState = null;
private AxStateFinalizerLogic finalizerLogic = null;
private ApexInternalContext internalContext = null;
// Holds the incoming and outgoing fields
private Map<String, Object> incomingFields = null;
// The next state finalizer executor
private Executor<Map<String, Object>, String, AxStateFinalizerLogic, ApexInternalContext> nextExecutor = null;
// The execution context; contains the facades for events and context to be used by tasks
// executed by this task
// executor
private StateFinalizerExecutionContext executionContext = null;
/**
* Gets the execution internalContext.
*
* @return the execution context
*/
protected StateFinalizerExecutionContext getExecutionContext() {
return executionContext;
}
/**
* {@inheritDoc}.
*/
@Override
public void setContext(final Executor<?, ?, ?, ?> incomingParent,
final AxStateFinalizerLogic incomingFinalizerLogic, final ApexInternalContext incomingInternalContext) {
this.parent = incomingParent;
axState = (AxState) parent.getSubject();
this.finalizerLogic = incomingFinalizerLogic;
this.internalContext = incomingInternalContext;
}
/**
* {@inheritDoc}.
*/
@Override
public void prepare() throws StateMachineException {
LOGGER.debug("prepare:" + finalizerLogic.getId() + "," + finalizerLogic.getLogicFlavour() + ","
+ finalizerLogic.getLogic());
argumentOfClassNotNull(finalizerLogic.getLogic(), StateMachineException.class,
"state finalizer logic cannot be null.");
}
/**
* {@inheritDoc}.
*/
@Override
public String execute(final long executionId, final Properties executionProperties,
final Map<String, Object> newIncomingFields) throws StateMachineException, ContextException {
throw new StateMachineException("execute() not implemented on abstract StateFinalizerExecutionContext class, "
+ "only on its subclasses");
}
/**
* {@inheritDoc}.
*/
@Override
public final void executePre(final long executionId, @NonNull final Properties executionProperties,
final Map<String, Object> newIncomingFields) throws StateMachineException, ContextException {
LOGGER.debug("execute-pre:" + finalizerLogic.getLogicFlavour() + "," + getSubject().getId() + ","
+ finalizerLogic.getLogic());
// Record the incoming fields
this.incomingFields = newIncomingFields;
// Get state finalizer context object
executionContext = new StateFinalizerExecutionContext(this, executionId, executionProperties, axState,
getIncoming(), axState.getStateOutputs().keySet(), getContext());
}
/**
* {@inheritDoc}.
*/
@Override
public final void executePost(final boolean returnValue) throws StateMachineException, ContextException {
if (!returnValue) {
String errorMessage = "execute-post: state finalizer logic execution failure on state \"" + axState.getId()
+ "\" on finalizer logic " + finalizerLogic.getId();
if (executionContext.getMessage() != null) {
errorMessage += ", user message: " + executionContext.getMessage();
}
LOGGER.warn(errorMessage);
throw new StateMachineException(errorMessage);
}
// Check a state output has been selected
if (getOutgoing() == null) {
String message = EXECUTE_POST_SFL + finalizerLogic.getId() + "\" did not select an output state";
LOGGER.warn(message);
throw new StateMachineException(message);
}
if (!axState.getStateOutputs().keySet().contains(getOutgoing())) {
LOGGER.warn(EXECUTE_POST_SFL + finalizerLogic.getId() + "\" selected output state \"" + getOutgoing()
+ "\" that does not exsist on state \"" + axState.getId() + "\"");
throw new StateMachineException(EXECUTE_POST_SFL + finalizerLogic.getId() + "\" selected output state \""
+ getOutgoing() + "\" that does not exsist on state \"" + axState.getId() + "\"");
}
LOGGER.debug("execute-post:{}, returning state output \"{}\" and fields {}", finalizerLogic.getId(),
getOutgoing(), incomingFields);
}
/**
* {@inheritDoc}.
*/
@Override
public void cleanUp() throws StateMachineException {
throw new StateMachineException("cleanUp() not implemented on class");
}
/**
* {@inheritDoc}.
*/
@Override
public AxReferenceKey getKey() {
return finalizerLogic.getKey();
}
/**
* {@inheritDoc}.
*/
@Override
public Executor<?, ?, ?, ?> getParent() {
return parent;
}
/**
* {@inheritDoc}.
*/
@Override
public AxStateFinalizerLogic getSubject() {
return finalizerLogic;
}
/**
* {@inheritDoc}.
*/
@Override
public ApexInternalContext getContext() {
return internalContext;
}
/**
* {@inheritDoc}.
*/
@Override
public Map<String, Object> getIncoming() {
return incomingFields;
}
/**
* {@inheritDoc}.
*/
@Override
public String getOutgoing() {
if (executionContext != null) {
return executionContext.getSelectedStateOutputName();
} else {
return null;
}
}
/**
* {@inheritDoc}.
*/
@Override
public void setNext(
final Executor<Map<String, Object>, String, AxStateFinalizerLogic, ApexInternalContext> inNextEx) {
this.nextExecutor = inNextEx;
}
/**
* {@inheritDoc}.
*/
@Override
public Executor<Map<String, Object>, String, AxStateFinalizerLogic, ApexInternalContext> getNext() {
return nextExecutor;
}
/**
* {@inheritDoc}.
*/
@Override
public void setParameters(final ExecutorParameters parameters) {}
}
|