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>

4 files changed, 227 insertions, 0 deletions

diff --git a/examples/examples-periodic/pom.xml b/examples/examples-periodic/pom.xml
new file mode 100644
index 000000000..ed0e5b19f
--- /dev/null
+++ b/examples/examples-periodic/pom.xml
@@ -0,0 +1,74 @@
+<!--
+  ============LICENSE_START=======================================================
+   Copyright (C) 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=========================================================
+-->
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>org.onap.policy.apex-pdp.examples</groupId>
+        <artifactId>examples</artifactId>
+        <version>2.0.0-SNAPSHOT</version>
+    </parent>
+
+    <artifactId>examples-periodic</artifactId>
+    <name>${project.artifactId}</name>
+    <description>APEX periodic event example</description>
+
+    <properties>
+        <policymodel.name>PeriodicPolicyModel</policymodel.name>
+        <apex-domains-periodic-dir>${project.basedir}/src</apex-domains-periodic-dir>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.onap.policy.apex-pdp.auth</groupId>
+            <artifactId>cli-editor</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <!-- Generate the APEX Policy JSON from the APEX CLI command -->
+            <plugin>
+                <groupId>org.codehaus.mojo</groupId>
+                <artifactId>exec-maven-plugin</artifactId>
+                <executions>
+                    <execution>
+                        <id>generate-policy</id>
+                        <phase>compile</phase>
+                        <goals>
+                            <goal>java</goal>
+                        </goals>
+                        <configuration>
+                            <mainClass>org.onap.policy.apex.auth.clieditor.ApexCLIEditorMain</mainClass>
+                            <classpathScope>compile</classpathScope>
+                            <arguments>
+                                <argument>--command-file=${project.basedir}/src/main/resources/policy/${policymodel.name}.apex</argument>
+                                <argument>--output-model-file=${project.build.directory}/classes/${policymodel.name}.json</argument>
+                                <argument>--log-file=${project.build.directory}/${policymodel.name}_policygeneration.log</argument>
+                                <argument>--working-dir=${project.basedir}</argument>
+                            </arguments>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+</project>
\ No newline at end of file
diff --git a/examples/examples-periodic/src/main/resources/logic/OutputTask.js b/examples/examples-periodic/src/main/resources/logic/OutputTask.js
new file mode 100644
index 000000000..0e44653c1
--- /dev/null
+++ b/examples/examples-periodic/src/main/resources/logic/OutputTask.js
@@ -0,0 +1,26 @@
+/*
+ * ============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);
+
+executor.logger.info(executor.outFields);
+
+var returnValue = executor.TRUE;
\ No newline at end of file
diff --git a/examples/examples-periodic/src/main/resources/logic/PeriodicTask.js b/examples/examples-periodic/src/main/resources/logic/PeriodicTask.js
new file mode 100644
index 000000000..18dbcda0e
--- /dev/null
+++ b/examples/examples-periodic/src/main/resources/logic/PeriodicTask.js
@@ -0,0 +1,44 @@
+/*
+ * ============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 eventList = executor.subject.getOutFieldSchemaHelper("EventList").createNewInstance();
+
+var eventType = Java.type("org.onap.policy.apex.service.engine.event.ApexEvent");
+
+for (i = 0; i < 5; i++) {
+    var event = new eventType("InputEvent", "0.0.1", "org.onap.policy.apex.periodic", "APEX", "APEX");
+
+    var par0 = "Hello: " + i;
+    var par1 = "Goodbye: " + i;
+
+    event.put("Par0", par0);
+    event.put("Par1", par1);
+
+    eventList.add(event);
+}
+
+executor.outFields.put("EventList", eventList);
+
+executor.logger.info(executor.outFields);
+
+var returnValue = executor.TRUE;
\ No newline at end of file
diff --git a/examples/examples-periodic/src/main/resources/policy/PeriodicPolicyModel.apex b/examples/examples-periodic/src/main/resources/policy/PeriodicPolicyModel.apex
new file mode 100644
index 000000000..22a07f5f5
--- /dev/null
+++ b/examples/examples-periodic/src/main/resources/policy/PeriodicPolicyModel.apex
@@ -0,0 +1,83 @@
+#-------------------------------------------------------------------------------
+# ============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=========================================================
+#-------------------------------------------------------------------------------
+
+model create name=PeriodicPolicyModel
+
+schema create name=SimpleLongType   flavour=Java schema=java.lang.Long
+schema create name=SimpleStringType flavour=Java schema=java.lang.String
+schema create name=EventListType  flavour=Java schema=org.onap.policy.apex.service.engine.event.ApexEventList
+
+event create name=PERIODIC_EVENT nameSpace=org.onap.policy.apex.periodic source=APEX target=APEX
+event parameter create name=PERIODIC_EVENT parName=PERIODIC_DELAY        schemaName=SimpleLongType
+event parameter create name=PERIODIC_EVENT parName=PERIODIC_FIRST_TIME   schemaName=SimpleLongType
+event parameter create name=PERIODIC_EVENT parName=PERIODIC_LAST_TIME    schemaName=SimpleLongType
+event parameter create name=PERIODIC_EVENT parName=PERIODIC_CURRENT_TIME schemaName=SimpleLongType
+event parameter create name=PERIODIC_EVENT parName=PERIODIC_EVENT_COUNT  schemaName=SimpleLongType
+
+event create name=EventListEvent nameSpace=org.onap.policy.apex.periodic source=APEX target=APEX
+event parameter create name=EventListEvent parName=EventList schemaName=EventListType
+
+event create name=InputEvent nameSpace=org.onap.policy.apex.periodic source=APEX target=APEX
+event parameter create name=InputEvent parName=Par0 schemaName=SimpleStringType
+event parameter create name=InputEvent parName=Par1 schemaName=SimpleStringType
+
+event create name=OutputEvent nameSpace=org.onap.policy.apex.periodic source=APEX target=APEX
+event parameter create name=OutputEvent parName=Par0 schemaName=SimpleStringType
+event parameter create name=OutputEvent parName=Par1 schemaName=SimpleStringType
+
+task create name=PeriodicTask
+task inputfield create name=PeriodicTask fieldName=PERIODIC_DELAY        schemaName=SimpleLongType
+task inputfield create name=PeriodicTask fieldName=PERIODIC_FIRST_TIME   schemaName=SimpleLongType
+task inputfield create name=PeriodicTask fieldName=PERIODIC_LAST_TIME    schemaName=SimpleLongType
+task inputfield create name=PeriodicTask fieldName=PERIODIC_CURRENT_TIME schemaName=SimpleLongType
+task inputfield create name=PeriodicTask fieldName=PERIODIC_EVENT_COUNT  schemaName=SimpleLongType
+
+task outputfield create name=PeriodicTask fieldName=EventList schemaName=EventListType
+
+task logic create name=PeriodicTask logicFlavour=JAVASCRIPT logic=LS
+#MACROFILE:"src/main/resources/logic/PeriodicTask.js"
+LE
+
+task create name=OutputTask
+task inputfield create name=OutputTask fieldName=Par0 schemaName=SimpleStringType
+task inputfield create name=OutputTask fieldName=Par1 schemaName=SimpleStringType
+
+task outputfield create name=OutputTask fieldName=Par0 schemaName=SimpleStringType
+task outputfield create name=OutputTask fieldName=Par1 schemaName=SimpleStringType
+
+task logic create name=OutputTask logicFlavour=JAVASCRIPT logic=LS
+#MACROFILE:"src/main/resources/logic/OutputTask.js"
+LE
+
+policy create name=PeriodicPolicy template=freestyle firstState=PeriodicState
+
+policy state create name=PeriodicPolicy stateName=PeriodicState triggerName=PERIODIC_EVENT defaultTaskName=PeriodicTask
+policy state output create name=PeriodicPolicy stateName=PeriodicState outputName=PeriodicOutput eventName=EventListEvent
+policy state taskref create name=PeriodicPolicy stateName=PeriodicState taskName=PeriodicTask outputType=DIRECT outputName=PeriodicOutput
+
+
+policy create name=OutputPolicy template=freestyle firstState=OutputState
+
+policy state create name=OutputPolicy stateName=OutputState triggerName=InputEvent defaultTaskName=OutputTask
+policy state output create name=OutputPolicy stateName=OutputState outputName=OutputOutput eventName=OutputEvent
+policy state taskref create name=OutputPolicy stateName=OutputState taskName=OutputTask outputType=DIRECT outputName=OutputOutput
+
+validate
+