init blue green docker

gistfile1.txt

#!/bin/bash
API_NAME=usuario

#
# verifica se tem algum container deste serviço
hasAny() {
  return $(docker ps | grep ${API_NAME} | wc -l)
}

#
# verifica se existe container verde
hasGreen() {
  return $(docker ps | grep ${API_NAME} | grep _green | wc -l)
}

#
# verifica se existe container verde ativo e offline
# todo: verificar se os green estão offline
hasGreenOffline() {
  return $(docker ps | grep ${API_NAME} | grep _green | wc -l)
}

#
# mata os containers blue ativos
killBlue() {
  docker ps --format '{{.Names}}' | grep $API_NAME | grep -v _green | while read container_name; do
    docker stop $container_name >>/dev/null
  done
}

#
# converte green para blue
makeNewBlue() {
  docker ps --format '{{.Names}}' | grep $API_NAME | grep _green | while read container_name; do
    COMPOSE_PROJECT_NAME= && VERSION=
    container_name_without_green=${container_name//_green/}
    docker rename $container_name $container_name_without_green
  done
}

#
# cria container green
makeNewGreen() {
  export COMPOSE_PROJECT_NAME="__green" && export VERSION="__green"
  docker-compose -f docker-compose.dev.yml up --build -d >>/dev/null
}

#
# ativa o container no kong 
setOnline() {
  
}

# 1 caso
hasAny
if [ $? -eq "0" ]; then
  makeNewBlue

  setOnline
fi

# 2 caso
hasGreen
if [ $? -eq "0" ]; then
  makeNewGreen

  setOnline
fi

# 3 caso
hasGreenOffline
if [ $? -ne "0" ]; then
  killBlue

  makeNewBlue

  setOnline

  makeNewGreen

  setOnline
fi

docker ps