Add TOSCA policy status header field to APEX event create CLI

In order to expose the processing status of a TOSCA policy
to APEX-PDP, a new header field for APEX concept "event"
has been introduced to track this within an APEX policy
implementation. This field will be leveraged to extract
the TOSCA policy execution metrics. Note, that the field is
marked as optional for backward compatibility.
Unit tests have been augmented to test for the field wherever
applicable and the default empty value is retained for the others.

"example-grpc" module has been updated to include this field.
Exposing the TOSCA policy execution metrics is outside the
scope of this patch since the current changes are already
very large owing to the atomic nature of the change introduced.

Issue-ID: POLICY-3845
Signed-off-by: Rashmi Pujar <rashmi.pujar1@bell.ca>
Change-Id: Ief6d70f9abcfc8414e10aa51a27815ee9028e4c8

1 files changed, 55 insertions, 9 deletions

diff --git a/model/event-model/src/main/java/org/onap/policy/apex/model/eventmodel/concepts/AxEvent.java b/model/event-model/src/main/java/org/onap/policy/apex/model/eventmodel/concepts/AxEvent.java
index 156b733ef..e3663e702 100644
--- a/model/event-model/src/main/java/org/onap/policy/apex/model/eventmodel/concepts/AxEvent.java
+++ b/model/event-model/src/main/java/org/onap/policy/apex/model/eventmodel/concepts/AxEvent.java
@@ -2,6 +2,7 @@
  * ============LICENSE_START=======================================================
  *  Copyright (C) 2016-2018 Ericsson. All rights reserved.
  *  Modifications Copyright (C) 2019-2020 Nordix Foundation.
+ *  Modifications Copyright (C) 2022 Bell Canada.
  * ================================================================================
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -21,6 +22,8 @@
 
 package org.onap.policy.apex.model.eventmodel.concepts;
 
+import com.google.common.base.Strings;
+import java.util.Arrays;
 import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;
@@ -40,9 +43,11 @@ import javax.xml.bind.annotation.XmlAccessorType;
 import javax.xml.bind.annotation.XmlElement;
 import javax.xml.bind.annotation.XmlRootElement;
 import javax.xml.bind.annotation.XmlType;
+import org.apache.commons.lang3.EnumUtils;
 import org.onap.policy.apex.model.basicmodel.concepts.AxArtifactKey;
 import org.onap.policy.apex.model.basicmodel.concepts.AxConcept;
 import org.onap.policy.apex.model.basicmodel.concepts.AxKey;
+import org.onap.policy.apex.model.basicmodel.concepts.AxToscaPolicyProcessingStatus;
 import org.onap.policy.apex.model.basicmodel.concepts.AxValidationMessage;
 import org.onap.policy.apex.model.basicmodel.concepts.AxValidationResult;
 import org.onap.policy.apex.model.basicmodel.concepts.AxValidationResult.ValidationResult;
@@ -50,7 +55,7 @@ import org.onap.policy.common.utils.validation.Assertions;
 
 /**
  * This class defines an Apex event. An {@link AxEvent} is used to kick off execution of policies in Apex and is emitted
- * by policies when they completer execution. In addition, Apex uses {@link AxEvent} instances internally to pass
+ * by policies when they complete execution. In addition, Apex uses {@link AxEvent} instances internally to pass
  * control from one Apex state to the next during execution.
  *
  * <p>The {@link AxArtifactKey} of an event uniquely identifies it in an Apex system and the name field in the key is
@@ -76,7 +81,7 @@ import org.onap.policy.common.utils.validation.Assertions;
 @XmlAccessorType(XmlAccessType.FIELD)
 @XmlRootElement(name = "apexEvent", namespace = "http://www.onap.org/policy/apex-pdp")
 @XmlType(name = "AxEvent", namespace = "http://www.onap.org/policy/apex-pdp", propOrder =
-    { "key", "nameSpace", "source", "target", "parameterMap" })
+    { "key", "nameSpace", "source", "target", "parameterMap", "toscaPolicyState"})
 
 public class AxEvent extends AxConcept {
     private static final long serialVersionUID = -1460388382582984269L;
@@ -106,6 +111,10 @@ public class AxEvent extends AxConcept {
     @XmlElement(name = "parameter", required = true)
     private Map<String, AxField> parameterMap;
 
+    @Column(name = "toscaPolicyState")
+    @XmlElement(required = false)
+    private String toscaPolicyState;
+
     /**
      * The default constructor creates an event with a null artifact key. The event name space, source, and target are
      * all defined as empty strings and the parameter map is initialized as an empty map.
@@ -130,7 +139,7 @@ public class AxEvent extends AxConcept {
      * @param key the key of the event
      */
     public AxEvent(final AxArtifactKey key) {
-        this(key, "", "", "", new TreeMap<>());
+        this(key, "", "", "", new TreeMap<>(), "");
     }
 
     /**
@@ -141,7 +150,7 @@ public class AxEvent extends AxConcept {
      * @param nameSpace the name space of the event
      */
     public AxEvent(final AxArtifactKey key, final String nameSpace) {
-        this(key, nameSpace, "", "", new TreeMap<>());
+        this(key, nameSpace, "", "", new TreeMap<>(), "");
     }
 
     /**
@@ -154,7 +163,7 @@ public class AxEvent extends AxConcept {
      * @param target the target of the event
      */
     public AxEvent(final AxArtifactKey key, final String nameSpace, final String source, final String target) {
-        this(key, nameSpace, source, target, new TreeMap<>());
+        this(key, nameSpace, source, target, new TreeMap<>(), "");
     }
 
     /**
@@ -165,9 +174,10 @@ public class AxEvent extends AxConcept {
      * @param source the source of the event
      * @param target the target of the event
      * @param parameterMap the map of parameters that the event has
+     * @param toscaPolicyState the TOSCA policy processing status that event is flagged with
      */
     public AxEvent(final AxArtifactKey key, final String nameSpace, final String source, final String target,
-                    final SortedMap<String, AxField> parameterMap) {
+                    final SortedMap<String, AxField> parameterMap, final String toscaPolicyState) {
         super();
         Assertions.argumentNotNull(key, "key may not be null");
         Assertions.argumentNotNull(nameSpace, "nameSpace may not be null");
@@ -180,6 +190,7 @@ public class AxEvent extends AxConcept {
         this.source = source;
         this.target = target;
         this.parameterMap = parameterMap;
+        this.toscaPolicyState = toscaPolicyState;
     }
 
     /**
@@ -327,6 +338,24 @@ public class AxEvent extends AxConcept {
     }
 
     /**
+     * Gets the TOSCA policy processing status from the event.
+     *
+     * @return the TOSCA policy processing status
+     */
+    public String getToscaPolicyState() {
+        return toscaPolicyState;
+    }
+
+    /**
+     * Sets the TOSCA policy processing status on the event.
+     *
+     * @param toscaPolicyState the TOSCA policy processing status
+     */
+    public void setToscaPolicyState(String toscaPolicyState) {
+        this.toscaPolicyState = toscaPolicyState;
+    }
+
+    /**
      * {@inheritDoc}.
      */
     @Override
@@ -363,10 +392,17 @@ public class AxEvent extends AxConcept {
                 result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
                                 "value on parameter " + eventParameterEntry.getKey() + " may not be null"));
             } else {
-                result = vaidateEventParameters(eventParameterEntry, result);
+                result = validateEventParameters(eventParameterEntry, result);
             }
         }
 
+        if (!Strings.isNullOrEmpty(toscaPolicyState)
+                && !EnumUtils.isValidEnum(AxToscaPolicyProcessingStatus.class, toscaPolicyState)) {
+            result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
+                    "toscaPolicyState on event is not a valid enum. Valid values are: "
+                            + Arrays.asList(AxToscaPolicyProcessingStatus.values())));
+        }
+
         return result;
     }
 
@@ -377,7 +413,7 @@ public class AxEvent extends AxConcept {
      * @param result the validation result to append to
      * @return The validation result
      */
-    private AxValidationResult vaidateEventParameters(final Entry<String, AxField> eventParameterEntry,
+    private AxValidationResult validateEventParameters(final Entry<String, AxField> eventParameterEntry,
                     final AxValidationResult result) {
         if (!eventParameterEntry.getKey().equals(eventParameterEntry.getValue().getKey().getLocalName())) {
             result.addValidationMessage(new AxValidationMessage(key, this.getClass(), ValidationResult.INVALID,
@@ -424,6 +460,8 @@ public class AxEvent extends AxConcept {
         builder.append(target);
         builder.append(",parameter=");
         builder.append(parameterMap);
+        builder.append(",toscaPolicyState=");
+        builder.append(toscaPolicyState);
         builder.append(")");
         return builder.toString();
     }
@@ -450,6 +488,7 @@ public class AxEvent extends AxConcept {
         copy.setNameSpace(nameSpace);
         copy.setSource(source);
         copy.setTarget(target);
+        copy.setToscaPolicyState(toscaPolicyState);
 
         return copy;
     }
@@ -466,6 +505,7 @@ public class AxEvent extends AxConcept {
         result = prime * result + source.hashCode();
         result = prime * result + target.hashCode();
         result = prime * result + parameterMap.hashCode();
+        result = prime * result + toscaPolicyState.hashCode();
         return result;
     }
 
@@ -498,6 +538,9 @@ public class AxEvent extends AxConcept {
         if (!target.equals(other.target)) {
             return false;
         }
+        if (!toscaPolicyState.equals(other.toscaPolicyState)) {
+            return false;
+        }
         return parameterMap.equals(other.parameterMap);
     }
 
@@ -532,7 +575,10 @@ public class AxEvent extends AxConcept {
         if (!parameterMap.equals(other.parameterMap)) {
             return (parameterMap.hashCode() - other.parameterMap.hashCode());
         }
+        if (!toscaPolicyState.equals(other.toscaPolicyState)) {
+            return toscaPolicyState.compareTo(other.toscaPolicyState);
+        }
 
         return 0;
     }
-}
+}
\ No newline at end of file