docker/docker_devices/cros/start_swarm_bot.sh

#!/bin/bash -x

trap "exit 10" SIGUSR1

SWARM_DIR=/b/swarming
SWARM_ZIP=swarming_bot.zip

DEPOT_TOOLS_DIR=/b/depot_tools
DEPOT_TOOLS_URL="https://chromium.googlesource.com/chromium/tools/depot_tools.git"
DEPOT_TOOLS_REV="da3a29e13e816459234b0b08ed1059300bae46dd"

if [ -z "$CROS_SSH_ID_FILE_PATH" ] ; then
  echo "Must specify path to ssh keys via CROS_SSH_ID_FILE_PATH env var"
  exit 1
else
  # Pass an empty password via "-N ''".
  su -c "/usr/bin/ssh-keygen -f $CROS_SSH_ID_FILE_PATH -N '' -t ed25519" chrome-bot
fi

# Some chromium tests need depot tools.
mkdir -p $DEPOT_TOOLS_DIR
chown chrome-bot:chrome-bot $DEPOT_TOOLS_DIR
su -c "cd $DEPOT_TOOLS_DIR && \
       /usr/bin/git init && \
       /usr/bin/git remote add origin $DEPOT_TOOLS_URL ; \
       /usr/bin/git fetch origin $DEPOT_TOOLS_REV && \
       /usr/bin/git reset --hard FETCH_HEAD" chrome-bot

mkdir -p $SWARM_DIR
chown chrome-bot:chrome-bot $SWARM_DIR
cd $SWARM_DIR
rm -rf swarming_bot*.zip
su -c "/usr/bin/curl -sSLOJ $SWARM_URL" chrome-bot

echo "Starting $SWARM_ZIP"
# Run the swarming bot in the background, and immediately wait for it. This
# allows the signal trapping to actually work.
su -c "/usr/bin/python3 $SWARM_ZIP start_bot" chrome-bot &
wait %1
exit $?