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Retry Logic But In Cron


 
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# 1  
Old 04-23-2020
Retry Logic But In Cron

Hard to explain but we get two sets of files in, and index file and image file. Often the image file arrives way later, so we just run this resubmit.sh script I'm going to show in a second.
Code:
java_dir="/apps/dwd/rip-robinprod/jar"
log_dir="/apps/dwd/logs"
log="$log_dir/resub.`date +"%m%d%y"`.log"
error_dir="/apps/dwd/rip-robinprod/work/"
ERRORFILE=`ls /apps/dwd/rip-robinprod/work/*err|wc -l`
dt=`date '+%d/%m/%Y_%H:%M:%S'`

cd $java_dir
echo $ERRORFILE

if [ $ERRORFILE -gt 0 ]; then
   sed -i 's/�/-/g' $error_dir*.rpt
   echo "The below files have been resbumitted. " >> $log
   echo `ls -ltr $error_dir*err` >>$log
   /bin/java -cp "./TIPError.jar:./TIP31.jar:./TIP31msg_en_US.jar" ResubmitErrors -AuxprpawdRobin01 -P20904 >>$log
else
   echo "No Error Files Found $dt" >>$log ;\
   exit
fi

This basically uses those jar files and tries to reconcile the files, if they don't work the files go back into a directory with the file extensions .err and rpt
Each time they do the resbumit.sh it updates the time stamp. How can we retry like 5 times and then kick out an email that this has been resumitted 5 times please notify vendor?
# 2  
Old 04-24-2020
In the loop, will the .err files be removed on later success? How to tell new errors from old ones during the loop? Will there be leftovers from the last run?
What wait period between loops do you want?
# 3  
Old 04-24-2020
In the following, the index file is placed in the requests directory, and the image file in the temp directory. The index files can have different extensions to indicate grouping or priority.
The pid file is used to prevent subsequent invocations of the cron job from running.
You can periodically examine the contents of the temp and request directories for entries that older than some specified time.


Code:
#!/bin/ksh
cd /u/email
BATCH=$1
proc=$$
if [ -r /u/email/$BATCH.pid ]
then
    echo "Previous batch  still running" $(cat $BATCH.pid)
    exit
fi
echo $proc >/u/email/$BATCH.pid
list=$(ls requests|grep $BATCH)
if [ "$list" != "" ]
    then
    for request in $list
    do
    #do processing here          
    #if successful 
        mv requests/$request done
        mv temp/$request* done
    #else
       #echo "This one failed"
       #fi
    done
fi
rm /u/email/$BATCH.pid
echo finished at $(date)

# 4  
Old 04-24-2020
Not sure why you should need cron for your task, but this should run under it as well. Make sure it is run by bash! Replace your if construct with
Code:
if [ $(ls ${error_dir} | grep -c "\.err$") -eq 0 ]
  then  echo "No Error Files Found $dt" >>$log
  #           exit
  else  while   ((++CNT <= 5))
          do    echo "The below files have been resbumitted. " >> $log
                ls -ltr ${error_dir}*err >>$log
                /bin/java -cp "./TIPError.jar:./TIP31.jar:./TIP31msg_en_US.jar" ResubmitErrors -AuxprpawdRobin01 -P20904 >>$log
                [ $(ls ${error_dir} | grep -c "\.err$") -eq 0 ] && break
                sleep 5
          done
        if (( CNT == 5))
          then  mail "resumitted 5 times please notify vendor"
          else  echo "error corrected after $CNT retries"
        fi
        unset CNT
fi

Be aware that you need to check for the error files in every loop. Check the mail stuff and adapt to your system.

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