.. This work is licensed under a Creative Commons Attribution 4.0 International License.
.. http://creativecommons.org/licenses/by/4.0
+.. _feature-tt-label:
+
*************************
Feature: Test Transaction
*************************
.. contents::
:depth: 3
-Summary
-^^^^^^^
-
The Test Transaction feature provides a mechanism by which the health of drools policy controllers can be tested.
When enabled, the feature functions by injecting an event object (identified by a UUID) into the drools session of each policy controller that is active in the system. Only an object with this UUID can trigger the Test Transaction-specific drools logic to execute.
If it is ever the case that a drools controller does not have the "TT" rule present in its *.drl*, or that the forward progress counter is not incremented, the Test Transaction thread for that particular drools session (i.e. controller) is terminated and a message is logged to *error.log*.
-Usage
-^^^^^
-
Prior to being enabled, the following drools rules need to be appended to the rules templates of any use-case that is to be monitored by the feature.
.. code-block:: java
:caption: TestTransactionTemplate.drl
:linenos:
- /*
+ /*
* ============LICENSE_START=======================================================
* feature-test-transaction
* ================================================================================
* 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.
* limitations under the License.
* ============LICENSE_END=========================================================
*/
-
+
package org.onap.policy.drools.rules;
-
+
import java.util.EventObject;
-
+
declare ForwardProgress
counter : Long
end
-
+
rule "TT.SETUP"
when
then
fp.setCounter(0L);
insert(fp);
end
-
+
rule "TT"
- when
+ when
$fp : ForwardProgress()
$tt : EventObject(source == "43868e59-d1f3-43c2-bd6f-86f89a61eea5")
then