#!/bin/sh 
# IBM_PROLOG_BEGIN_TAG 
# This is an automatically generated prolog. 
#  
# 61haes_r720 src/43haes/usr/sbin/cluster/haws/sbin/subsys/tds/monitor_tds.sh 1.8 
#  
# Licensed Materials - Property of IBM 
#  
# COPYRIGHT International Business Machines Corp. 2004,2015 
# All Rights Reserved 
#  
# US Government Users Restricted Rights - Use, duplication or 
# disclosure restricted by GSA ADP Schedule Contract with IBM Corp. 
#  
# IBM_PROLOG_END_TAG 
# @(#)34	1.8 src/43haes/usr/sbin/cluster/haws/sbin/subsys/tds/monitor_tds.sh, hacmp.assist, 61haes_r720, 1539B_hacmp720 9/11/15 11:36:05
#
###############################################################################
#
# This script is used to monitor an TDS server
#
# This script must return one of the following values:
# 0: If the application is healthy
# 1: If the application is dead or otherwise unhealthy
#
###############################################################################

# These are the exit status codes. No other values are useful so we break
# down the possible returns as either Healthy or Dead.
EXIT_DEAD=1
EXIT_HEALTHY=0
STATUS=""
TDS_DB_NAME_ID="ibm-slapdDbName"


###############################################################################
# Function: init
###############################################################################
#
# Initialize this script
###############################################################################
init() {
    # The standard directory for the HAWS software is in
    # /usr/es/sbin/cluster/haws. But this can be changed by setting the
    # environment string HAWS_HOME. 
    if [[ -z $HAWS_HOME ]]; then
        HAWS_HOME=/usr/es/sbin/cluster/haws
    fi

    # Source function library. This is standard for all scripts
    clhaws_functions=$HAWS_HOME/sbin/clhaws_functions
    if [[ ! -f  "$clhaws_functions" ]]; then
        echo "The file '$clhaws_functions' is missing! Unable to continue. Bye"
        exit 1
    fi
    . $clhaws_functions

    # We now call into the generic initialization routine. This will
    # complete the initialization process
    generic_init

    # once the above clhaws_functions complete, we have all our variables and 
    # functions defined. We can now safely log messages and begin processing.
    logmsg HAWS_TRACE "$MSG_BEGIN" "Begin\n"

}

###############################################################################
# Function: check_tds_status
###############################################################################
#
# Check the following:
# 1) WebSphere server server status
# 2) Do an ldap search to look for a response
# 3) Ping the TDS DB2 Database
###############################################################################
check_tds_status() {
    set -x
    logmsg HAWS_TRACE $MSG_TDSMON_CHECKING "Checking the status of TDS...\n"
    STATUS="$EXIT_HEALTHY"

    logmsg HAWS_TRACE "$MSG_CALLING_SCRIPT" "Calling script: %s %s\n" "$WAS_SCRIPT" "$WAS_SERVER_NAME"
    $WAS_SCRIPT $WAS_SERVER_NAME  | grep "The Application Server \"$WAS_SERVER_NAME\" is STARTED" 
    if (( $? == 0 )) ; then
	logmsg HAWS_INFO $MSG_WAS_MON_SERVER_IS_HEALTHY "Websphere App Server is healthy.\n"
    else
	logmsg HAWS_ERROR $MSG_WAS_MON_SERVER_IS_DEAD "The App Server is not healthy.\n"
	STATUS=$EXIT_DEAD
	return
    fi

    logmsg HAWS_TRACE "$MSG_CALLING_SCRIPT" "Calling script: %s %s\n" "$TDS_SCRIPT" "-p $TDS_PORT -b cn=monitor -s base objectclass=*"
    $TDS_SCRIPT "-p $TDS_PORT -b cn=monitor -s base objectclass=*"
    if (( $? == 0 )) ; then
	logmsg HAWS_INFO $MSG_TDS_MON_IS_HEALTHY "TDS is healthy.\n"
    else
	logmsg HAWS_ERROR $MSG_TDS_MON_IS_DEAD "TDS is not healthy.\n"
	STATUS=$EXIT_DEAD
    fi

    DB_NAMES=$(grep -i "$TDS_DB_NAME_ID" "$TDS_CONF_FILE" | cut -d':' -f2 | sed -e 's/ //g')
    for TDS_DB_NAME in $DB_NAMES ; do
    /usr/bin/su - $TDS_DB_USER -c "db2 connect to $TDS_DB_NAME"
    if (( $? != 0 )) ; then
	logmsg HAWS_ERROR $MSG_DB2_MON_CONNECT_FAILED "Unable to connect to the database: %s.\n" $TDS_DB_NAME
	STATUS=$EXIT_DEAD
    else
	logmsg HAWS_INFO $MSG_DB2_MON_CONNECT_SUCCEEDED "Connected to the database: %s.\n" $TDS_DB_NAME
	/usr/bin/su - $TDS_DB_USER -c "db2 ping $TDS_DB_NAME"
	if (( $? != 0 )) ; then
	    logmsg HAWS_ERROR $MSG_DB2_MON_PING_FAILED "Unable to ping the database: %s.\n" $TDS_DB_NAME
	    STATUS=$EXIT_DEAD
	else
	    logmsg HAWS_INFO $MSG_DB2_MON_PING_SUCCEEDED "Ping'ed the database: %s.\n" $TDS_DB_NAME
	fi
	/usr/bin/su - $TDS_DB_USER -c "db2 disconnect $TDS_DB_NAME"
    fi
    done

    # Return
    return
}

###############################################################################
# Function: read_config
###############################################################################
#
# Read our configuration file.  Set up the WAS and TDS monitor scripts.
# 
###############################################################################
read_config() {
    cfgfile=$1
    logmsg HAWS_TRACE $MSG_READING_CONFIG "Reading configuration file: %s\n" $cfgfile
    . $cfgfile

    WAS_SCRIPT="$WAS_INSTALL_DIR/bin/serverStatus.sh"
    TDS_SCRIPT="$IDS_INSTALL_DIR/bin/ldapsearch -p $TDS_PORT -b cn=monitor -s base objectclass=*"
}

#
###############################################################################
#
# SCRIPT EXECUTION SECTION
#
###############################################################################
# This section of the script is used to call into the various predefined
# functions composed of the common code, and the script-specific functions.
#
# The intent of this section is to provide a high-level view of how this
# script operates.
###############################################################################
init
generic_process_arguments $*
read_config $*
check_tds_status
exit $STATUS