Add parsing check when Context field is empty

This change adds a parsing check to ERROR if Context field is Empty.
Until now there had not been a requirement of non empty fields, so in
case this is needed in the future for other key/values, a collection is
created.

Test plan
PASS: * Add/modify an alarm/log in events.yaml file with Context field
        set to <Empty>.
      * Run the checkEventYaml script and check it fails.
PASS: * Check that all the events in events.yaml file have the Context
        field set to a non empty value.
      * Run the checkEventYaml script and check it ends successfully.

Closes-bug: 2020381

Signed-off-by: Agustin Carranza <agustin.carranza@windriver.com>
Change-Id: Ia267886dd49099525751165975fb5d291c0c6f82

fm-doc/fm_doc/parseEventYaml.py

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2016-2022 Wind River Systems, Inc.
+# Copyright (c) 2016-2023 Wind River Systems, Inc.
 #
 # SPDX-License-Identifier: Apache-2.0
 #
@@ -103,6 +103,10 @@ logFields = {
     context_FieldName: context_FieldValues
 }
 
+nonEmptyFields = {
+    context_FieldName
+}
+
 
 def checkField(fieldKey, fieldValues, key, event):
     if fieldKey not in event:
@@ -110,6 +114,10 @@ def checkField(fieldKey, fieldValues, key, event):
         return False
     # print("START: %s :END" % event[fieldKey])
 
+    if fieldKey in nonEmptyFields and not event[fieldKey]:
+        print("\n    ERROR: \'%s\' can not be empty." % (fieldKey))
+        return False
+
     if type(event[fieldKey]) is str:
         if not fieldValues:
             return True