Motorola 6806800C44B manual Sequence of Events in the Sample Application

Sample Application

A

A.1 Overview

The sample AvSv application is a 'counter' application that is run in a 2N-redundancy model. The active entity counts periodically. When it fails, the standby entity becomes active and resumes counting from where the previous active entity failed.

The sample application shows you how to use some APIs defined in the SAI-AIS AMF service. It also demonstrates the following features:

zPassive monitoring

zProtection Group tracking

zComponent failover (triggered by a component-generated error report) followed by component restart repair.

zAMF-invoked health check

A.1.1 Sequence of Events in the Sample Application

When the demo is started, AvSv instantiates two instances of the sample application per the configuration in the BOM. The sequence of events in both the applications is described below

Create 3 threads (one each for the counter application, AMF-INTF, and CKPT-INTF)

In the AMF-INTF thread:

1.Initialize with AMF

2.Call the AMF selection object

3.Call the API to get the component name

4.Register the component

5.Wait on the AMF selection object for callback events.

In the CKPT-INTF thread:

zOpen the local checkpoint

zInitialize with CKPT

zRegister the arrival callback

zCall the CKPT selection object

zWait on the CKPT selection object for callback events

AMF dispatches CsiSetCallback with active/standby HA state.

Availability Service Programmer’s Reference (6806800C44B) 35