misterio

#!/bin/bash

if [ "z$1" == "z" ]; then
cat <<EOF
Simple usage: misterio \{ apply \| up \| start \|  down \}
Every docker compose command is supported

apply: make a build and an up

Mistery pick every role listed inside hosts/$HOSTNAME and process it
the role env file format is
    <rolename>[@inst].env
where @inst can be used to have multiple instance on the same machine

The technology is based only on docker compose (no docker swarm)

Role specific use:

misterio --list
 List all the roles

misterio --rolename \{ apply \| up \| start \|  down \}

Apply a specific command to that role

EOF
exit 1
fi


if [ ! -z $MISTERIO_HOST_ALIAS  ]; then
    MISTERIO_HOST=$MISTERIO_HOST_ALIAS
else 
    MISTERIO_HOST=$HOSTNAME    
fi

processRole(){
    local role_env="$1"
    shift 1
    local role=$(basename $role_env)
    local inst_re='(.*)@(.*).env'
    if [[ $role  =~ $inst_re ]]; then        
        MISTERIO_INST_NAME=${BASH_REMATCH[2]}
        #echo MISTERIO_INST_PREFIX=$MISTERIO_INST_PREFIX
        role_dir=roles/${BASH_REMATCH[1]}
    else
        unset MISTERIO_INST_NAME
        role_dir=roles/${role//.env/}
    fi

    echo -e '\nEnv:' ${role_env//hosts/}

    # set -x
    cp ${role_env}  ${role_dir}/.env || true   
    { set +x; } 2>/dev/null
    if [ "$#" == "1" -a "$1" == "apply" ] ; then
        ( cd $role_dir ; docker compose up --build -d || (echo FAILED $role on $HOSTNAME ) )
        ( cd $role_dir ; docker compose ps  ; docker compose logs --tail 3 )
    else
        ( cd $role_dir ; docker compose $* || (echo FAILED $role on $HOSTNAME ))
    fi
    { set +x; } 2>/dev/null
    # docker build 'https://github.com/elastic/dockerfiles.git#v6.8.10:elasticsearch'

}

case $1 in
 --list)
    echo Roles for $MISTERIO_HOST
    for role_env in hosts/$MISTERIO_HOST/*.env ; do
        role=$(basename $role_env)
        echo ${role//.env/}
    done
    ;; 
  --*)
    opt="$1"
    shift 1
    single_role=${opt//--/}
    # echo $single_role
    processRole hosts/$MISTERIO_HOST/${single_role}.env $*
    ;;

    *)
        set -e
        # set -v
        cd $(dirname $0)
        for role_env in hosts/$MISTERIO_HOST/*.env ; do
            processRole $role_env $*
        done
    ;;
esac