Current File : //usr/share/doc/supervisor/examples/sample_eventlistener.py
#! /usr/bin/python -u
# A sample long-running supervisor event listener which demonstrates
# how to accept event notifications from supervisor and how to respond
# properly. This demonstration does *not* use the
# supervisor.childutils module, which wraps the specifics of
# communications in higher-level API functions. If your listeners are
# implemented using Python, it is recommended that you use the
# childutils module API instead of modeling your scripts on the
# lower-level protocol example below.
import sys
def write_stdout(s):
sys.stdout.write(s)
sys.stdout.flush()
def write_stderr(s):
sys.stderr.write(s)
sys.stderr.flush()
def main():
while 1:
write_stdout('READY\n') # transition from ACKNOWLEDGED to READY
line = sys.stdin.readline() # read header line from stdin
write_stderr(line) # print it out to stderr (testing only)
headers = dict([ x.split(':') for x in line.split() ])
data = sys.stdin.read(int(headers['len'])) # read the event payload
write_stderr(data) # print the event payload to stderr (testing only)
write_stdout('RESULT 2\nOK') # transition from BUSY to ACKNOWLEDGED
#write_stdout('RESULT 4\nFAIL') # transition from BUSY TO ACKNOWLEDGED
if __name__ == '__main__':
main()
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