Trap errors

[ksbrace]

Hello,
I have a question regarding trap statements. Do they propagate up to the original shell script trap? For instance, I have a script which is separated into functions and those functions call some other script or execute something. Do I need to put a trap in each function or just the entry point? Do I need the extra trap in the cashier() method? Do I need to add a trap for each .shl script that is called in the nightly batch method? THanks in advance!! Below is part of my script to possibly help clarify question:

#!/bin/sh
########################################################
#
# bus_prod_night.sh
#
# 29-Jun-04     1.0     pH      Bourne-version based on bus_prod_night.shl
# 27-Jul-04     1.1     pH      explicit environmental settings
#
########################################################

########################################################
# time-date string functions
########################################################
# Monday, Tuesday, etc.
getDayName() {
   DAYNAME=`date +%A`
}

# January, February, etc.
getMonthName() {
   MONTHNAME=`date +%B`
}

# Sun=1, Mon=2, etc.
getWDay() {
    wday=`date +%w`
    DAY=`expr $wday + 1`
}

# HHMMSS format
getTime() {
    THE_TIME=`date +%H%M%S`
}

# DD-MON-YY format
getDate() {
    DATE=`date +%d-%b-%y | tr '[a-z]' '[A-Z]'`
}

# YYYYMMDD_HHMMSS format
getFileDate() {
   FileDate=`date +%Y%m%e_%H%M%S | tr ' ' '0'`
}

########################################################
# initializations
########################################################

HOSTN=`uname -n`
# uncomment this line to set test92 environment
# ORACLE_SID=test92; export ORACLE_SID

# replaced 7/27/04
# prod
# uncomment this line to set prod92 environment
ORACLE_SID=prod92; export ORACLE_SID

ORACLE_HOME=`/usr/local/bin/dbhome $ORACLE_SID`; export ORACLE_HOME
PATH=`echo $PATH | sed "s;$ORACLE_HOME/bin;;g"`:$ORACLE_HOME/bin; export PATH

cd $HOME

Message="The Prod Nightly Script ran at: $THE_TIME"
Subject="ProdNightly Time: $THE_TIME"
Recipient="me@me.com"
TrapRecipients="me@me.com"
# initialize date and time stamps
getTime
getDate
getFileDate
getWDay
getDayName
getMonthName

LogFile=$OW_LIS/bus_prod_night_${FileDate}.log

########################################################
#Trapping For Errors
########################################################
trap 'print ""; print "ERR exit status of some command was detected during the e
xecute of bus_prod_night.shl for ${ORACLE_SID} on ${HOST}."; print "Please revie
w the log file or screen output for details."; print ""; mailx -s "{HOSTN}-${ORACLE_SID}-ERR exit status detected in bus_prod_night.shl" ${TrapRecipients} < ${L
ogFile}; exit 1' ERR

########################################################
# logging function
########################################################
log() {
    getTime
    echo "$THE_TIME: $*" | tee -a $LogFile
}

########################################################
# test function
########################################################
tester() {
   log "STARTING tester"

   ls
   sleep 5
   echo MONTHNAME is $MONTHNAME

   log "ENDING tester"
}

########################################################
# daily batch functions
########################################################
cashier() {
trap 'print ""; print "ERR exit status of the cashier command was detected durin
g the execute of bus_prod_night.shl for ${ORACLE_SID} on ${HOST}."; print "Pleas
e review the log file or screen output for details."; print ""; mailx -s "{HOSTN
}-${ORACLE_SID}-ERR exit status detected in bus_prod_night.shl" ${TrapRecipients
} < ${LogFile}; exit 1' ERR

    log "BEGINNING TO EXECUTE cashier.sqr...."

    #Executing cashier.sqr script
    sqr $BANNER_LINKS/cashier.sqr / -f$OW_LIS/cashier_${FileDate}.lis > $OW_LIS/
cashier_${FileDate}.log

    #PRINT
    csprint $OW_LIS/cashier_${FileDate}.lis

    log "FINISHED EXECUTION of cashier.sqr"

} # cashier

#############################TBRYCSH SECTION#######################
tbrycsh() {

    log "BEGINNING TO EXECUTE TBRYCSH.sqr...."
    sqlplus / @$BANNER_LINKS/tbrycsh.sql F

    cp $HOME/tbrycsh.lis $OW_LIS/tbrycsh_${FileDate}.lis
    $RM -f $HOME/tbrycsh.lis

    if [ -f $OW_LIS/tbrycsh_${FileDate}.lis ]
       then
          #PRINT
          csprint $OW_LIS/tbrycsh_${FileDate}.lis
    else
       echo "NO OUTPUT FOR TBRYCSH..."
    fi

    log "FINISHED EXECUTION of TBRYCSH.sqr"

} # tbrycsh

########################################################
# all nightly batch procedures
########################################################
night_batch() {

    log "BEGINNING NIGHT$BATCH SECTION......."

    if [ -x $OW_MISC/shs_imm_hold_upd.shl ]; then
        log "Executing shs_imm_hold_upd.shl script..."
        $OW_MISC/shs_imm_hold_upd.shl shs_imm_hold_upd.dat
    fi

    if [ -x $OW_MISC/adm_dec7_upd.shl ]; then
       log "Executing adm_dec7_upd.shl script...."
       $OW_MISC/adm_dec7_upd.shl
    fi
    
    if [ -x $OW_MISC/adm_dec8_upd.shl ]; then
       log "Executing adm_dec8_upd.shl script...."
       $OW_MISC/adm_dec8_upd.shl
    fi

    if [ -x $OW_MISC/adm_birth_pin.shl ]; then
        log "Executing adm_birth_pin.shl script...."
        $OW_MISC/adm_birth_pin.shl
    fi

    if [ -x $OW_MISC/adm_declare_maj.shl adm_declare_maj.shl ]; then
        log "Executing adm_declare_maj.shl"
        $OW_MISC/adm_declare_maj.shl adm_declare_maj.dat
    fi

    log "FINISHED EXECUTING NIGHT$BATCH FILES....." 

} # night_batch
########################################################

########################################################
# all daily financial procedures
########################################################
daily_batch() {

#   uncomment these function calls to test

#   tester
   cashier
   tbrycsh
 
} # daily_batch

########################################################
# main procedure
########################################################
main() {
    log "###################################################"
    log "$DATE"
    log "$THE_TIME"
    log "###################################################"
 
# If script runs after midnight and before 8am mail a 
# notification to uhlge.   
   if [ $THE_TIME -gt "000000" -a $THE_TIME -lt "080000" ]
      then
         echo $Message | mailx -s "$Subject" "$Recipient" 
   fi

# If the time is after 8am and before 8pm output message
   if [ $THE_TIME -gt "080000" -a $THE_TIME -lt "200000" ]
      then
         echo "Prod Nightly does not get run during the day"
         echo "Prod Nightly attempted to run during the day $Message" | mailx -s
 "$Subject" "$Recipient"
   fi

#   uncomment to test functions
    daily_batch
    night_batch

} # main

main

# end bus_prod_night.sh

 

[PHV]

In your shell man page read carefully the discussion about traps.

Hope This Helps, PH.
Want to get great answers to your Tek-Tips questions? Have a look at FAQ219-2884 or FAQ222-2244

 

[ksbrace]

PHV,
I did read the man pages for trap BEFORE posting and it didn't explain my scenario. That was the purpose of this post to get an answer. I ended up testing out a scenario that I knew would throw an error and threw that into a script and had another script w/a trap call the script with the error. The caller caught the callee's error. Which was the answer that I was looking for, not "read the man pages".

 

[AlbertAguirre]

ksbrace
I'm having the same problem but with a diff experience.

I am setting "trap "" 1 2 3" at the top of the main script. I am trying to stop users from doing a CTRL-C out of the script onto the command line.

The mainscript has a menu that calls other scripts, but the user can CTRL-C out of this called script.

How do I avoid this without having to set the trap in every script that is called from the main script?

 

[PHV]

You may change the intr character with stty on top of the mainscript, resetting it when exit.

Hope This Helps, PH.
Want to get great answers to your Tek-Tips questions? Have a look at FAQ219-2884 or FAQ222-2244