Need shell script to start job based on remote trigger file

[sryarraguntla]

Hi Everyone,

I have a requirement to look for a trigger file on other server and upon find will kick off a DS job. For this i need to write a shell script that looks for a trigger file, if finds then kick the DS job and if not the script has to run again untill it finds the file.. something like loop or sleep mechanism..

Any one who have implemeted this similar situation can help me in writing the script, any ideas on how to acheive this requirement will also be appreciated.

Thanks in Advance

**Note: Subject line made more descriptive - Content Editor **

[JRodriguez]

sryarraguntla,

Take a look at the Wait For File activity in the sequence palette. This activity address what you are looking for and more .... unless you wanted it done specifically by a shell script

[asorrell]

If the file isn't easily accessible via the WaitForFile mechanism, your other solution is to write a shell script that wakes up periodically, and uses FTP to check for the trigger and move it to a local directory (when present).

Then you can still use the WaitForFile stage in your job to check for the local copy when it arrives.

[AmeyJoshi14]

Hi,
You can use the following shell script

Code: Select all

#/bin/sh
PATHDIR=/opt/home
val=2
while [ $val -eq 2 ]
do
  find $PATHDIR -name "triggerfilename.txt" > $PATHDIR/gotit.txt  #finding the trigger file
  val1=`wc -l $PATHDIR/gotit.txt|cut -f1 -d'/'`
  if [ $val1 -ne 0 ]
   then
    #run the dsjob command script
    val=1
  else
    echo 'Still Running'
   fi
sleep 35  #Increase the sleep,if required
done

If you want to run the jobs from different servers you can use ssh command after 'if then'...ssh command will be :

Code: Select all

ssh -t -l username IP PATHDIR/dsjobrun.sh

Or as suggested by asorrell use ftp(scp) and transfer the file and then run the dsjob script.
Hope this will help you out !

[DSguru2B]

I wrote something similar a while back. Its here.
You can edit it to fire a job once the file is found. You can also set a time limit.

[sryarraguntla]

Really thanks for all your replys. I appreciate your help and quick response.

Ameyjoshi14-- Can i connect to the server AS400 through ftp and execute the script which you gave to check for the trigger file if found run the dsjob if not sleep..

If means the code should looks like

#!/bin/sh
HOST='xxxxx'
USER='xxxxx'
PASSWD='xxxx'
ftp $HOST <<END_SCRIPT
user $USER
$PASSWD
------ the next command would be your script ----

Please let me know if iam correct

Once again thanks

[AmeyJoshi14]

Hi,
I am not sure if the above commands will be fine...
What we did is develop the scrpit, which can telnet automatically and run commands on the other machine and end the telnet session but for this you need to install EXPECT and TCL packages on your unix system.
Or as suggested by asorrell you can transfer the file from one server to another server (where you require it) and then run the dsjob command.
Then the script will look as :

Code: Select all

#/bin/sh
PATHDIR=/opt/home
val=2
while [ $val -eq 2 ]
do
  find $PATHDIR -name "dum12.txt" > $PATHDIR/gotit.txt  #finding the trigger file
  val1=`wc -l $PATHDIR/gotit.txt|cut -f1 -d'/'`
  if [ $val1 -ne 0 ]
   then
    val=1
    #you can create another script and use this as wrapper.
    ftp -v -n "YOUR.IP.ADD.RESS" << cmd
    user "user" "passwd"
    cd /distant/directory
    lcd /local/directory
    put your files 
#All you have to do after is to create the cron if you are "putting" a file,replace the put with ls and see if your file is in there.
    quit
    cmd
  else
    echo 'Still Running'
  fi
sleep 35  #Increase the sleep,if required
done

I was not able to test this code since right now i do not have access to unix box.
Hope this will solve your problem

[AmeyJoshi14]

I wrote something similar a while back. Its here.
You can edit it to fire a job once the file is found. You can also set a time ...

Hey! That's really nice scipt... :D if i would have found it first....by little modification(as per the requirement) lot of work in our project would have been saved