How to add data in openTSDB through java using tCollector

Question

My goal is to insert data into TSDB directly through java code, for which, I tried creating the executable jar which was printing data to STDOUT. Then I wrote collector to run this jar and put it inside tcollector/collectors/0. Finally, I tried executing the collector in two ways, one in shell script and the other in python.

Python Collector:

def main():
    while True:
        os.system("java -jar ./TCollectorTSDB.jar")
        sys.stdout.flush()
        time.sleep(COLLECTION_INTERVAL)    
if __name__ == "__main__":
    sys.stdin.close()
    sys.exit(main())

The above collector was working perfectly fine, but when I tried to run the same jar from shell script the Collector was not picking the shell script.

Shell script collector:

java -jar "./TCollectorTSDB.jar"

Do I have to configure something, to register this collector? If we have to insert data through Java which is the best way to do the same with Collector?

Answer 1

tcollector doesn't care whether the collector you write is in Python or a shell script or what. As long as you put the collector in tcollector/collectors/0 it should be picked up automatically. If it is not, then check that your shell script is executable (chmod a+x) and that it starts with a shebang (#!/bin/sh for example).