OpenStack or Bust, Part 5: test_stack script

#!/bin/bash
### ----------
### test_stack
### ----------
###
### AUTH: Greg Chavez, greg.chavez@gmail.com
###
### DESC: Prints out complete status of each OpenStack daemon configured
###       in the QUADS array, including:
###
###            1) service daemon status
###            2) date/time of most recent successful start
###            3) all error log messages since the last start
###

######################################################################
### CONFIGURE HERE
######################################################################

# For each daemon, fill out a single line with four space-separated
# array values:
#     1) Service code name (nova, quantum, etc.)
#     2) Service name as it appears in /etc/init.d
#     3) Log filename (ommit directory)
#     4) Log line that indicates a successful service start (must be
#        quoted!)
#
# NB: Blank lines are ignored

QUADS=(

nova nova-api nova-api.log "wsgi starting up"
nova nova-scheduler nova-scheduler.log "Starting scheduler node"

glance glance-api api.log "Using /var/lib/glance/keystone-signing as cache directory for signing certificate"
glance glance-registry registry.log "Using /var/lib/glance/keystone-signing as cache directory for signing certificate"

quantum quantum-server server.log "wsgi starting up"

cinder cinder-api cinder-api.log "Started osapi_volume on"
cinder cinder-scheduler cinder-scheduler.log "Creating Consumer connection for Service cinder-scheduler start"
cinder cinder-volume cinder-volume.log "Creating Consumer connection for Service cinder-volume start"

)


######################################################################
### Colors
######################################################################
txtbld=$(tput bold)     # Bold
bldred=${txtbld}$(tput setaf 1) # Red
bldgrn=${txtbld}$(tput setaf 2) # Green
bldylw=${txtbld}$(tput setaf 3) # Yellow
txtrst=$(tput sgr0)     # Reset


######################################################################
### Functions
######################################################################

function stat_me {

    CN=$1       # Code Name
    SN=$2       # Service Name
    LF=$3       # Log File
    SM="$4"     # Start Message

    log="/var/log/${CN:-xxx}/${LF:-xxx}"
    err=0

    if [ ! -f "/etc/init.d/$SN" ]; then
        echo "${bldylw}ERR: Service $SN not found${txtrst}"
        err=1
    elif [ ! -r $log ]; then
        echo "${bldylw}ERR: Log $log not found${txtrst}"
        err=1
    fi
    [ $err -gt 0 ] && return $err

    LG=$(grep -n "$SM" $log | tail -1)      # log line
    LN=$(echo $LG| awk -F: '{print $1}')        # line number
    ERR=$(awk 'NR > ln && /ERR/' ln=$LN $log)   # err messages

    if service $SN status | grep -q running 2>/dev/null ; then
        ST=${bldgrn}OK${txtrst}
    else
        ST=${bldred}FAILED${txtrst}
    fi

    printf "%-15s%s\n" "SERVICE:" "$SN"
    printf "%-15s%s\n" "STATUS:" "$ST"
    printf "%-15s" "LAST START:"; echo ${LG:-none} | sed "s/^$LN://" | awk '{print $1, $2}'
    echo "ERRORS:"; [ -n "$ERR" ] && echo "$ERR" | sed 's/^/    /'
    echo "--------------------------------------------------"

}


######################################################################
### Main
######################################################################

echo "--------------------------------------------------"
idx=0
for Q in "${QUADS[@]}"; do
    if [ $idx == 0 ]; then
        code=$Q
    elif [ $idx == 1 ]; then
        svc=$Q
    elif [ $idx == 2 ]; then
        log=$Q
    elif [ $idx == 3 ]; then
        msg="$Q"
        stat_me $code $svc $log "$msg"
        idx=0
        continue
    fi
    let "idx += 1"
done