Delay or wait process

[arvindnsn]

Hello,

I have a requirement where a snap has to wait for n amount of seconds before it executes. The n amount of seconds varies based on the output of the previous snap. How do I carry the output of a variable from a previous snap and pass it as the number of seconds to wait for the following snap.

Thanks
Aravind N

[arvindnsn]

Is there a way to send a variable from the previous snap to the script Snap instead of hardcoding the seconds to sleep.

The below script has time.sleep(20), instead can we pass a parameter like time.sleep($sleep_time), where $sleep_time carries the number of seconds from the previous mapper.

def execute(self):
self.log.info(“Executing Transform script”)
while self.input.hasNext():
try:
# Read the next input document, store it in a new dictionary, and write this as an output document.
inDoc = self.input.next()
time.sleep(20)
outDoc = inDoc
self.output.write(inDoc, outDoc)

[bojanvelevski · Accepted solution]

Yes there is. In the incoming object itself, map a field called “time” for example. Than, in the script, right after the
in_doc=self.input.next() line, add the following one:

sleep_time = in_doc.get('time')

sleep_time is your variable you can use to dynamically change the waiting time for every document. Meaning you need to change the sleep function to:

time.sleep(sleep_time)

You can manipulate the waiting time by changing the “time” value in the mapper before the script, or even pass that value from a parameter.

[arvindnsn]

bojanvelevski:

time.sleep(sleep_time)

That works brilliant!! Thanks so much!