Docker wrapper for cqlsh

dcqlsh

#!/usr/bin/env bash

CONTAINER=""
CQLSH=()

# Parse options
while [[ $# -gt 0 ]]
do
key="$1"

case ${key} in
  --help)
    DISPLAY_HELP=true
    ;;
  -c|--container)
    CONTAINER="$2"
    shift
    ;;
  *)
    CQLSH+=("$1")
    ;;
esac
shift # past argument or value
done

if [ "$DISPLAY_HELP" = true ]; then
  SCRIPT_NAME="$( basename ${BASH_SOURCE[0]} )"
  echo "$SCRIPT_NAME is a Docker wrapper for cqlsh. It adds the following option:"
  echo "  -c, --container   Link the given container to this container, so you can connect using the host name."
  echo
  docker run -it --rm cassandra cqlsh --help
  exit 0;
fi

if [ -n "$CONTAINER" ]; then
  docker run -it --link ${CONTAINER} --rm cassandra cqlsh ${CONTAINER} ${CQLSH[@]}
else
  docker run -it --net=host --rm cassandra cqlsh ${CQLSH[@]}
fi

I use this script to run cqlsh from the latest Cassandra Docker container. I find this more convenient than installing it using pip. It also comes with the added benefit of being able to connect to containers which are not port-mapped to the host. To do so it adds one option:

• -c, --container Link the given container to this container, so you can connect using the container name.