Hi Matt, I created a simple implementation of a NiFi OutputStreamCallback in Python ExecuteScript and successfully transferred data to next processor in my flow. However, when I try to enrich the code and add desired logic to that, data is simply not transferred. I don't see any compilation error and it even logs suggest that ExecuteScript ran without any error. Appreciate if you could help. Below is the snippet which simply calls function and write data to the flow file. import urllib2
import json
import datetime
import csv
import time
import sys
import traceback
from org.apache.nifi.processor.io import OutputStreamCallback
from org.python.core.util import StringUtil
class WriteContentCallback(OutputStreamCallback):
def __init__(self, content):
self.content_text = content
def process(self, outputStream):
try:
outputStream.write(StringUtil.toBytes(self.content_text))
except:
traceback.print_exc(file=sys.stdout)
raise
page_id = "dsssssss"
access_token = "sdfsdfsf%sdfsdf"
def scrapeFacebookPageFeedStatus(page_id, access_token):
flowFile = session.create()
flowFile = session.write(flowFile, WriteContentCallback("Hello there this is my data"))
flowFile = session.write()
session.transfer(flowFile, REL_SUCCESS)
has_next_page = False
num_processed = 0 # keep a count on how many we've processed
scrape_starttime = datetime.datetime.now()
while has_next_page:
print "Scraping %s Page: %s\n" % (page_id, scrape_starttime)
has_next_page = False
print "\nDone!\n%s Statuses Processed in %s" % \
(num_processed, datetime.datetime.now() - scrape_starttime)
if __name__ == '__main__':
scrapeFacebookPageFeedStatus(page_id, access_token)
flowFile = session.create()
flowFile = session.write(flowFile, WriteContentCallback("and your data"))
session.transfer(flowFile, REL_SUCCESS)
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