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Prometheus metrics and Grafana dashboards for all of your favorite Elixir libraries

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prom_ex priv grafana_agent port_wrapper.sh
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priv/grafana_agent/port_wrapper.sh 

#!/usr/bin/env bash



# Start the program in the background

exec "$@" &

pid1=$!



# Silence warnings from here on

exec >/dev/null 2>&1



# Read from stdin in the background and

# kill running program when stdin closes

exec 0<&0 $(

  while read; do :; done

  kill -KILL $pid1

) &

pid2=$!



# Clean up

wait $pid1

ret=$?

kill -KILL $pid2

exit $ret