Starting zero alpha and ratel in a single command e.g. in MacOSX and other environments - dgraph

Question

https://dgraph.io/tour/intro/2/
asks for three docker commands being run in different terminals:
zero
alpha
ratel
I'd rather start things from a single script dgraph within Mac OSX 10.3.6 and other environments and use e.g. the terminal app to call the different scripts along the lines of Running a command in a new Mac OS X Terminal window
How can the script below adapted for other environments like Unix and Windows?
dgraph
#!/bin/bash
# WF 2020-08-05
# see https://dgraph.io/tour/intro/2/
version=v20.03.0
#ansi colors
#http://www.csc.uvic.ca/~sae/seng265/fall04/tips/s265s047-tips/bash-using-colors.html
blue='\033[0;34m'
red='\033[0;31m'
green='\033[0;32m' # '\e[1;32m' is too bright for white bg.
endColor='\033[0m'
#
# a colored message
# params:
# 1: l_color - the color of the message
# 2: l_msg - the message to display
#
color_msg() {
local l_color="$1"
local l_msg="$2"
echo -e "${l_color}$l_msg${endColor}"
}
#
# error
#
# show the given error message on stderr and exit
#
# params:
# 1: l_msg - the error message to display
#
error() {
local l_msg="$1"
# use ansi red for error
color_msg $red "Error:" 1>&2
color_msg $red "\t$l_msg" 1>&2
exit 1
}
# show usage
#
usage() {
echo "$0 [-h|--help|-k|--kill"
echo ""
echo "-b | --bash: start a bash terminal shell within the currently running container"
echo "-h | --help: show this usage"
echo "-k | --kill: stop the docker image"
exit 1
}
#
# stop the docker image
#
stopImage() {
color_msg $blue "stopping and removing dgraph image ..."
docker stop dgraph
docker rm dgraph
color_msg $green "...done"
}
#
# start a bash shell within the currently running container
#
bashInto() {
sudo docker exec -it dgraph bash
}
#
# dgraph zero
#
zero() {
docker run -it -p 5080:5080 -p 6080:6080 -p 8080:8080 \
-p 9080:9080 -p 8000:8000 -v ~/dgraph:/dgraph --name dgraph \
dgraph/dgraph:$version dgraph zero
}
#
# dgraph alpha
#
alpha() {
docker exec -it dgraph dgraph alpha --lru_mb 2048 --zero localhost:5080 --whitelist 0.0.0.0/0
}
#
# dgraph ratel
#
ratel() {
docker exec -it dgraph dgraph-ratel
}
me=$0
dir=$(dirname $0)
base=$(basename $0)
if [ $# -lt 1 ]
then
case $base in
dgraph)
# Run Dgraph zero
# And in another, run ratel (Dgraph UI)
# In another terminal, now run Dgraph alpha
for option in zero ratel alpha
do
#echo $dir $option
open -a terminal.app $dir/$option
# wait a bit
sleep 2
done
;;
alpha) alpha;;
ratel) ratel;;
zero) zero;;
esac
fi
# commandline option
while [ "$1" != "" ]
do
option="$1"
case $option in
alpha) alpha;;
ratel) ratel;;
zero) zero;;
-b|--bash) bashInto;;
-k|--kill) stopImage;;
-h|--help) usage;;
esac
shift
done

Answer 1

https://github.com/WolfgangFahl/DgraphAndWeaviateTest/blob/master/scripts/dgraph now has a script working on Linux (tested with travis/Ubuntu 18.04 LTS - bionic).
See also https://travis-ci.org/github/WolfgangFahl/DgraphAndWeaviateTest/jobs/715131236
usage
scripts/dgraph -h
scripts/dgraph [-b|--bash|-h|--help|-k|--kill|-p|--pull]
-b | --bash: start a bash terminal shell within the currently running container
-h | --help: show this usage
-k | --kill: stop the docker image
-p | --pull: pull the docker image
dgraph
#!/bin/bash
# WF 2020-08-05
#
# Starts zero alpha and ratel docker based with one script
#
# see https://dgraph.io/tour/intro/2/
# see https://stackoverflow.com/questions/63260073/starting-zero-alpha-and-ratel-in-a-single-command-e-g-in-macosx-and-other-envir
# see https://discuss.dgraph.io/t/dgraph-start-script/9231
version=v20.03.0
# interative tty option for docker
it="-it"
os=$(uname)
case $os in
Linux)
docker="docker"
it="";;
#docker="sudo docker";;
Darwin)
docker="docker";;
*)
docker="docker";;
esac
#ansi colors
#http://www.csc.uvic.ca/~sae/seng265/fall04/tips/s265s047-tips/bash-using-colors.html
blue='\033[0;34m'
red='\033[0;31m'
green='\033[0;32m' # '\e[1;32m' is too bright for white bg.
endColor='\033[0m'
#
# a colored message
# params:
# 1: l_color - the color of the message
# 2: l_msg - the message to display
#
color_msg() {
local l_color="$1"
local l_msg="$2"
echo -e "${l_color}$l_msg${endColor}"
}
#
# error
#
# show the given error message on stderr and exit
#
# params:
# 1: l_msg - the error message to display
#
error() {
local l_msg="$1"
# use ansi red for error
color_msg $red "Error:" 1>&2
color_msg $red "\t$l_msg" 1>&2
exit 1
}
# show usage
#
usage() {
echo "$0 [-h|--help|-k|--kill"
echo ""
echo "-b | --bash: start a bash terminal shell within the currently running container"
echo "-h | --help: show this usage"
echo "-k | --kill: stop the docker image"
echo "-p | --pull: pull the docker image"
exit 1
}
#
# stop the docker image
#
stopImage() {
color_msg $blue "stopping and removing dgraph image ..."
$docker stop dgraph
$docker rm dgraph
color_msg $green "...done"
}
#
# pull the docker image
#
pullImage() {
color_msg $blue "pulling dgraph image $version ..."
$docker pull dgraph/dgraph:$version
color_msg $green "...done"
}
#
# start a bash shell within the currently running container
#
bashInto() {
$docker exec -it dgraph bash
}
#
# dgraph zero
#
zero() {
# Let’s create a folder for storing Dgraph data outside of the container:
mkdir -p ~/dgraph
$docker run $it -p 5080:5080 -p 6080:6080 -p 8080:8080 \
-p 9080:9080 -p 8000:8000 -v ~/dgraph:/dgraph --name dgraph \
dgraph/dgraph:$version dgraph zero
}
#
# dgraph alpha
#
alpha() {
$docker exec $it dgraph dgraph alpha --lru_mb 2048 --zero localhost:5080 --whitelist 0.0.0.0/0
}
#
# dgraph ratel
#
ratel() {
$docker exec $it dgraph dgraph-ratel
}
me=$0
dir=$(dirname $0)
base=$(basename $0)
if [ $# -lt 1 ]
then
case $base in
dgraph)
# Run Dgraph zero
# And in another, run ratel (Dgraph UI)
# In another terminal, now run Dgraph alpha
for option in zero ratel alpha
do
# make sure linked versions of command are available
if [ ! -f $dir/$option ]
then
color_msg $blue "creating link $dir/$option"
ln $dir/dgraph $dir/$option
fi
#echo $dir $option
color_msg $blue "starting dgraph $option ..."
case $os in
Darwin)
open -a terminal.app $dir/$option
;;
# https://askubuntu.com/questions/46627/how-can-i-make-a-script-that-opens-terminal-windows-and-executes-commands-in-the
Linux)
#for terminal in gnome-terminal xterm konsole
#do
# which $terminal > /dev/null
# if [ $? -eq 0 ]
# then
# $terminal -e $dir/$option
# break
# fi
#done
nohup $dir/$option > /tmp/$option.log 2>&1 &
sleep 2
tail /tmp/$option.log
;;
*)
error "unsupported operating system $os"
esac
# wait a bit
sleep 2
done
;;
alpha) alpha;;
ratel) ratel;;
zero) zero;;
esac
fi
# commandline option
while [ "$1" != "" ]
do
option="$1"
case $option in
alpha) alpha;;
ratel) ratel;;
zero) zero;;
-p|--pull) pullImage;;
-b|--bash) bashInto;;
-k|--kill) stopImage;;
-h|--help) usage;;
esac
shift
done