Adding more examples to apex-pdp

- Adding more examples (DecisionMaker, Periodic & ONAPvCPE) to apex-pdp.
- Fixed CORS issue in plugin-event-carrier-restserver module.
Added a ContainerResponseFilter to intercept every request/response coming to
REST server and add the required headers to support CORS.

Change-Id: Ic3e36c683f2a78992ce1417d2c00233b34066f2f
Issue-ID: POLICY-861
Signed-off-by: ramverma <ram.krishna.verma@ericsson.com>

7 files changed, 282 insertions, 0 deletions

diff --git a/examples/examples-decisionmaker/src/main/resources/logic/AnswerInitTask.js b/examples/examples-decisionmaker/src/main/resources/logic/AnswerInitTask.js
new file mode 100644
index 000000000..59074963a
--- /dev/null
+++ b/examples/examples-decisionmaker/src/main/resources/logic/AnswerInitTask.js
@@ -0,0 +1,47 @@
+/*
+ * ============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=========================================================
+ */
+
+executor.logger.info(executor.subject.id);
+executor.logger.info(executor.inFields);
+
+var answerAlbum = executor.getContextAlbum("AnswerAlbum");
+
+answerAlbum.put("a0", executor.inFields.get("a0"));
+answerAlbum.put("a1", executor.inFields.get("a1"));
+answerAlbum.put("a2", executor.inFields.get("a2"));
+answerAlbum.put("a3", executor.inFields.get("a3"));
+answerAlbum.put("a4", executor.inFields.get("a4"));
+answerAlbum.put("a5", executor.inFields.get("a5"));
+answerAlbum.put("a6", executor.inFields.get("a6"));
+
+var lastAnswerAlbum = executor.getContextAlbum("LastAnswerAlbum");
+lastAnswerAlbum.put("lastAnswer", answerAlbum.size() - 1);
+
+executor.outFields.put("a0", answerAlbum.get("a0"));
+executor.outFields.put("a1", answerAlbum.get("a1"));
+executor.outFields.put("a2", answerAlbum.get("a2"));
+executor.outFields.put("a3", answerAlbum.get("a3"));
+executor.outFields.put("a4", answerAlbum.get("a4"));
+executor.outFields.put("a5", answerAlbum.get("a5"));
+executor.outFields.put("a6", answerAlbum.get("a6"));
+
+executor.logger.info(executor.outFields);
+
+var returnValue = executor.TRUE;
\ No newline at end of file
diff --git a/examples/examples-decisionmaker/src/main/resources/logic/DitheringAnswerTask.js b/examples/examples-decisionmaker/src/main/resources/logic/DitheringAnswerTask.js
new file mode 100644
index 000000000..ec3455851
--- /dev/null
+++ b/examples/examples-decisionmaker/src/main/resources/logic/DitheringAnswerTask.js
@@ -0,0 +1,37 @@
+/*
+ * ============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=========================================================
+ */
+
+executor.logger.info(executor.subject.id);
+executor.logger.info(executor.inFields);
+
+var size = executor.getContextAlbum("AnswerAlbum").size();
+
+var selection = 2 + Math.floor(Math.random() * 3);
+
+var selectionA = "a" + selection;
+
+executor.logger.info(size);
+executor.logger.info(selectionA);
+
+executor.outFields.put("decision", executor.getContextAlbum("AnswerAlbum").get(selectionA));
+
+executor.logger.info(executor.outFields);
+
+var returnValue = executor.TRUE;
\ No newline at end of file
diff --git a/examples/examples-decisionmaker/src/main/resources/logic/MakeDecisionStateTSL.js b/examples/examples-decisionmaker/src/main/resources/logic/MakeDecisionStateTSL.js
new file mode 100644
index 000000000..93261e2e0
--- /dev/null
+++ b/examples/examples-decisionmaker/src/main/resources/logic/MakeDecisionStateTSL.js
@@ -0,0 +1,42 @@
+/*
+ * ============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=========================================================
+ */
+
+executor.logger.info(executor.subject.id);
+executor.logger.info(executor.inFields);
+
+var returnValue = executor.TRUE;
+
+if (executor.inFields.get("mode").equals("random")) {
+    executor.subject.getTaskKey("RandomAnswerTask").copyTo(executor.selectedTask);
+}
+else if (executor.inFields.get("mode").equals("pessimistic")) {
+    executor.subject.getTaskKey("PessimisticAnswerTask").copyTo(executor.selectedTask);
+}
+else if (executor.inFields.get("mode").equals("optimistic")) {
+    executor.subject.getTaskKey("OptimisticAnswerTask").copyTo(executor.selectedTask);
+}
+else if (executor.inFields.get("mode").equals("dithering")) {
+    executor.subject.getTaskKey("DitheringAnswerTask").copyTo(executor.selectedTask);
+}
+//else if (executor.inFields.get("mode").equals("roundrobin")) {
+//    executor.subject.getTaskKey("RoundRobinAnswerTask").copyTo(executor.selectedTask);
+//}
+
+executor.logger.info("Answer Selected Task:" + executor.selectedTask);
\ No newline at end of file
diff --git a/examples/examples-decisionmaker/src/main/resources/logic/OptimisticAnswerTask.js b/examples/examples-decisionmaker/src/main/resources/logic/OptimisticAnswerTask.js
new file mode 100644
index 000000000..e197c5f07
--- /dev/null
+++ b/examples/examples-decisionmaker/src/main/resources/logic/OptimisticAnswerTask.js
@@ -0,0 +1,37 @@
+/*
+ * ============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=========================================================
+ */
+
+executor.logger.info(executor.subject.id);
+executor.logger.info(executor.inFields);
+
+var size = executor.getContextAlbum("AnswerAlbum").size();
+
+var selection = size - Math.floor(Math.random() * size / 2) - 1;
+
+var selectionA = "a" + selection;
+
+executor.logger.info(size);
+executor.logger.info(selectionA);
+
+executor.outFields.put("decision", executor.getContextAlbum("AnswerAlbum").get(selectionA));
+
+executor.logger.info(executor.outFields);
+
+var returnValue = executor.TRUE;
\ No newline at end of file
diff --git a/examples/examples-decisionmaker/src/main/resources/logic/PessimisticAnswerTask.js b/examples/examples-decisionmaker/src/main/resources/logic/PessimisticAnswerTask.js
new file mode 100644
index 000000000..34942d846
--- /dev/null
+++ b/examples/examples-decisionmaker/src/main/resources/logic/PessimisticAnswerTask.js
@@ -0,0 +1,37 @@
+/*
+ * ============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=========================================================
+ */
+
+executor.logger.info(executor.subject.id);
+executor.logger.info(executor.inFields);
+
+var size = executor.getContextAlbum("AnswerAlbum").size();
+
+var selection = Math.floor(Math.random() * size / 2);
+
+var selectionA = "a" + selection;
+
+executor.logger.info(size);
+executor.logger.info(selectionA);
+
+executor.outFields.put("decision", executor.getContextAlbum("AnswerAlbum").get(selectionA));
+
+executor.logger.info(executor.outFields);
+
+var returnValue = executor.TRUE;
\ No newline at end of file
diff --git a/examples/examples-decisionmaker/src/main/resources/logic/RandomAnswerTask.js b/examples/examples-decisionmaker/src/main/resources/logic/RandomAnswerTask.js
new file mode 100644
index 000000000..f4012ac6e
--- /dev/null
+++ b/examples/examples-decisionmaker/src/main/resources/logic/RandomAnswerTask.js
@@ -0,0 +1,37 @@
+/*
+ * ============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=========================================================
+ */
+
+executor.logger.info(executor.subject.id);
+executor.logger.info(executor.inFields);
+
+var size = executor.getContextAlbum("AnswerAlbum").size();
+
+var selection = Math.floor(Math.random() * size);
+
+var selectionA = "a" + selection;
+
+executor.logger.info(size);
+executor.logger.info(selectionA);
+
+executor.outFields.put("decision", executor.getContextAlbum("AnswerAlbum").get(selectionA));
+
+executor.logger.info(executor.outFields);
+
+var returnValue = executor.TRUE;
\ No newline at end of file
diff --git a/examples/examples-decisionmaker/src/main/resources/logic/RoundRobinAnswerTask.js b/examples/examples-decisionmaker/src/main/resources/logic/RoundRobinAnswerTask.js
new file mode 100644
index 000000000..a3d52f20f
--- /dev/null
+++ b/examples/examples-decisionmaker/src/main/resources/logic/RoundRobinAnswerTask.js
@@ -0,0 +1,45 @@
+/*
+ * ============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=========================================================
+ */
+
+executor.logger.info(executor.subject.id);
+executor.logger.info(executor.inFields);
+
+var size = executor.getContextAlbum("AnswerAlbum").size();
+var lastAnswer = executor.getContextAlbum("LastAnswerAlbum").get("lastAnswer");
+
+executor.logger.info(size);
+executor.logger.info(lastAnswer);
+
+var answer = ++lastAnswer;
+if (answer >= size) {
+    answer = 0;
+}
+
+executor.getContextAlbum("LastAnswerAlbum").put("lastAnswer", answer)
+
+var selectionA = "a" + answer;
+
+executor.logger.info(selectionA);
+
+executor.outFields.put("decision", executor.getContextAlbum("AnswerAlbum").get(selectionA));
+
+executor.logger.info(executor.outFields);
+
+var returnValue = executor.TRUE;
\ No newline at end of file