InfoScale™ 9.0 Cluster Server Agent Developer's Guide - AIX, Linux, Solaris, Windows

Monitor entry point with intentional offline

This script includes the intentional offline functionality for the MyCustomApp agent.

See About on-off, on-only, and persistent resources .

Note that the method to detect intentional offline of an application depends on the type of application. The following example assumes that the application writes a status code into a file if the application is intentionally stopped.

#!/bin/sh

. "${CLUSTER_HOME}/bin/ag_i18n_inc.sh"

ResName=$1; shift;
VCSAG_SET_ENVS $ResName
// Obtain the attribute values from ArgListValues
parse_arglist_values();
RETVAL=$?

if [ ${RETVAL} -eq ${VCSAG_RES_UNKNOWN} ]; then
    // Could not get all the required attributes from
ArgListValues
    exit $VCSAG_RES_UNKNOWN;
fi

// Check if the application's process is present in the ps
// output
check_if_app_is_running();
RETVAL=$?

if [ ${REVAL} -eq ${VCSAG_RES_ONLINE} ]; then
    // Application process found
    exit $VCSAG_RES_ONLINE;
fi

// Application process was not found; Check if user gracefully
// shutdown the application
grep "MyCustomAppCode 123 : User initiated shutdown command"
${APPLICATION_CREATED_STATUS_FILE}
RETVAL=$?

if [ ${REVAL} -eq 0 ]; then
// Found MyCustomAppCode 123 in the application's status
// file that gets created by the application on graceful
//shutdown
    exit $VCSAG_RES_INTENTIONALOFFLINE;
else
// Did not find MyCustomAppCode 123; hence application has
// crashed or gone down unintentionally
    exit $VCSAG_RES_OFFLINE;
fi

// Monitor should never come here
exit $VCSAG_RES_UNKNOWN;