Used to spawn a bfx-svc-js service. Contains the worker CLI.
Arguments:
wtype worker name, e.g. wrk-util-net-api
env production or development
debug enable debug mode, with heap dump support
For workers that require a port:
apiPort port to listen on, e.g. 8721
Memory snapshots can be loaded in Chrome. Open developer tools, go to the Memory tab, click: Load profile.... You can load multiple snapshots and diff them.
To enable Memory Snapshot support, start the service with the --debug flag.
A snapshot is written each time the process receives a SIGUSR2 signal.
$ kill -USR2 <pid>
Example:
# start service with heap dump support
$ node worker.js --env=development --wtype=wrk-util-net-api --apiPort 8721 --debug=true
# do some operations, e.g. multiple requests
# then take first snapshot
$ ps -A | grep util-net-api
70833 ttys001 0:01.23 wrk-util-net-api-70833
$ kill -USR2 70833
# heapdump-258886655.138372.heapsnapshot file appears in service dir
# repeat sending signal if you want to compare snapshots