slowradio.sh

#! /bin/bash

CONTROL_SH=$(basename "$0")
oneline_usage="$CONTROL_SH [-h] command [args]"

usage() {
  cat <<-EndUsage
Usage: $oneline_usage
Use '$CONTROL_SH -h' for more information
EndUsage
  exit 1
}

helpinfo() {
  cat <<-EndHelp
Usage: $oneline_usage

Commands:
    build [tag]
        Build a new docker image for a given tag
    push [tag]
        Push latest version up to docker hub
    pull [tag]
        Pull latest version from docker hub
    foreground optfolder [tag] [name]
        Run in the foreground
    run optfolder [tag] [name]
        Run in the background
    connect [name]
        Connect to a bash session on a running container
    stats [name]
        Stats on running process

    [name] always defaults to *slowradio*
    [tag] always defaults to *latest*

Flags:
    -h
        Show usage info

EndHelp
  exit 0
}

die() {
  echo "$*"
  exit 1
}

readonly REPO="rumblesan"
readonly APP="slowradio"

build() {
  echo "Building new $REPO/$APP image with tag $DOCKER_TAG"
  docker build -t $REPO/$APP:$DOCKER_TAG .
}

push() {
  echo "Pushing new $REPO/$APP image with tag $DOCKER_TAG"
  docker push $REPO/$APP:$DOCKER_TAG
}

pull() {
  echo "Pulling new $REPO/$APP image with tag $DOCKER_TAG"
  docker pull $REPO/$APP:$DOCKER_TAG
}

foreground() {
  if [ -z "$1" ]; then
    die "Need to give opt folder"
  fi
  local optfolder="$1"
  echo "Running $APP in the foreground"
  docker run --name $CONTAINER_NAME -v "$1":/opt/slowradio $REPO/$APP:$DOCKER_TAG
}

run() {
  if [ -z "$1" ]; then
    die "Need to give opt folder"
  fi
  local optfolder="$1"
  local retries=10
  echo "Running $APP"
  docker run --name $CONTAINER_NAME --restart=on-failure:"$retries" -d -v "$1":/opt/slowradio $REPO/$APP:$DOCKER_TAG
}

connect() {
  echo "Connecting to $CONTAINER_NAME"
  docker exec -it $CONTAINER_NAME bash
}

stats() {
  echo "Connecting to $CONTAINER_NAME"
  docker exec $CONTAINER_NAME ps up $(docker exec $CONTAINER_NAME pgrep -f 'slow')
}

runaction() {
  if [ ! -f Dockerfile ]; then
    die "This script needs to be run in the same directory as the Dockerfile"
  fi

  action=$(printf "%s\n" "$1" | tr 'A-Z' 'a-z')

  case "$action" in
  "build")
    build
    ;;
  "push")
    push
    ;;
  "pull")
    pull
    ;;
  "foreground")
    foreground "${@:2}"
    ;;
  "run")
    run "${@:2}"
    ;;
  "connect")
    connect
    ;;
  "stats")
    stats
    ;;
  *)
    usage
    ;;
  esac

}

echo "$APP control"

CONTAINER_NAME="slowradio"
DOCKER_TAG="latest"

while getopts "hn::t:" opt "$@"; do
  case "$opt" in
  h)
    helpinfo
    ;;
  n)
    CONTAINER_NAME="$OPTARG"
    echo "Using docker tag $CONTAINER_NAME"
    ;;
  t)
    DOCKER_TAG="$OPTARG"
    echo "Using docker tag $DOCKER_TAG"
    ;;
  esac
done
runaction "${@:$OPTIND}"