Get golang dumps from BOSH deployed concourse

dump.sh

#!/bin/bash

set -o errexit
set -o nounset
set -o xtrace

readonly DUMP_PREFIX="/tmp/dump.$(date +%Y-%m-%d)"
readonly INSTANCE_GROUP=${INSTANCE_GROUP:-web}


main () {
  goroutine_dumps::retrieve
  golang_cpu_profile::retrieve
  golang_mem_profile::retrieve
  copy
  clean
}

goroutine_dumps::retrieve () {
  echo "INFO: retrieving goroutines info"

  local command='curl -s 0.0.0.0:8079/debug/pprof/goroutine?debug=2 > '$DUMP_PREFIX'.goroutines.$(hostname).dump'

  bosh -n -e $BOSH_ENVIRONMENT -d $BOSH_DEPLOYMENT \
    ssh -c "$command" $INSTANCE_GROUP
}

golang_mem_profile::retrieve () {
  echo "INFO: retrieving golang memory profile"

  local command='curl -s 0.0.0.0:8079/debug/pprof/heap > '$DUMP_PREFIX'.heap.$(hostname).dump'

  bosh -n -e $BOSH_ENVIRONMENT -d $BOSH_DEPLOYMENT \
    ssh -c "$command" $INSTANCE_GROUP
}

golang_cpu_profile::retrieve () {
  echo "INFO: retrieving golang cpu profile"

  local command='curl -s 0.0.0.0:8079/debug/pprof/profile?seconds=30 > '$DUMP_PREFIX'.profile.$(hostname).dump'

  bosh -n -e $BOSH_ENVIRONMENT -d $BOSH_DEPLOYMENT \
    ssh -c "$command" $INSTANCE_GROUP
}

copy () {
  echo "INFO: copying"

  bosh -n -e $BOSH_ENVIRONMENT -d $BOSH_DEPLOYMENT \
    scp $INSTANCE_GROUP:$DUMP_PREFIX*.dump ./
}

clean () {
  echo "INFO: cleaning"

  bosh -n -e $BOSH_ENVIRONMENT -d $BOSH_DEPLOYMENT \
    ssh -c "rm $DUMP_PREFIX.*.dump" $INSTANCE_GROUP
}

main "$@"