#!/usr/bin/sh

# Function to send a RANCID log to syslog

LogIt() {

  # This routine will take a single RANCID log file, condense it, and
  # send it to syslog.
  #
  # Parameters
  # $1 - The name of the RANCID log file to process
  #

  # Build temp files
  ERR=$(mktemp)
  ADD=$(mktemp)
  UPD=$(mktemp)
  LOG=$(mktemp)

  # Get the name of the rancid group
  GRP=$(expr match $1 '.*\/\([a-z]*\)\.')

  # Get new devices
  grep "Added " $1 > $ADD

  # Get updated devices
  grep "Checking in " $1 > $UPD

  # Get and reduce errors to a single line per device
  grep "clogin error" $1 | sort | uniq -c > $ERR

  # Compute some statistics on added, updated and errors
  ADDCNT=$(wc -l < $ADD)
  UPDCNT=$(wc -l < $UPD)
  ERRCNT=$(wc -l < $ERR)

  # Create a file of the lines to send to syslog
  grep "starting:"    $1                              >  $LOG
  cat $ADD                                            >> $LOG
  cat $UPD                                            >> $LOG
  cat $ERR                                            >> $LOG
  echo "Added=$ADDCNT Updated=$UPDCNT Errors=$ERRCNT" >> $LOG
  grep "ending:"      $1                              >> $LOG

  # Send the file to syslog
  logger -s -f $LOG -p local0.info -t "rancid-run Group=$GRP "

  # Clean up temp files
  rm $LOG $UPD $ADD $ERR
}


# ===== Main routine


# Run default ENVFILE to get the LOGDIR.
ENVFILE="/etc/rancid/rancid.conf"
. $ENVFILE


# Test/set a lock file
LOCKFILE="/rancid/locks/processing"

if [ -e $LOCKFILE ]
then
  echo "Lock file $LOCKFILE exists."
  exit
fi
touch $LOCKFILE

# Run RANCID
echo "Running rancid-run"
/usr/libexec/rancid/rancid-run


# Because RANCID does not syslog directly, we will need to convert
# the RANCID logs to syslog events. And, we don't know the name of
# the log files. But, we do know the directory that the log files are
# stored in. We also know that they will be newer than the date/time
# on our lock file. So, we use 'find' to find all log files in the
# LOGDIR newer than the lock file, and process them one at a time.
LOGS=$(find $LOGDIR -type f -newer $LOCKFILE)
for FILE in $LOGS
do
  LogIt $FILE
done


# Now, remove the lock file
rm $LOCKFILE