Creator - working

creator/Dockerfile

@@ -1,11 +1,9 @@
 # Alpine base image
 FROM alpine:edge
 
-VOLUME /data
+RUN apk add --no-cache bash docker openssh-keygen vim
 
-RUN apk add --no-cache bash docker openssh-keygen
+ADD entrypoint-command /bin/entrypoint
-
-
-CMD [ "/bin/bash" ]
 
+CMD [ "/bin/entrypoint" ]
 

creator/entrypoint-command

@@ -0,0 +1,195 @@
+#!/bin/bash
+set -euo pipefail
+IFS=$'\n\t'
+
+
+volume_prefix=cloner
+
+
+function die(){
+	echo $@ 1>&2
+	exit 1
+}
+
+function checkProjectName(){
+	# check, if volume does not exist yet
+	name=$1
+	# should not be empty
+	[ -n "$read_project_name" ] || die "Empty project name is not allowed"
+	set +e
+	docker volume inspect $volume_prefix-$1 > /dev/null 2>&1
+	exists=$?
+	set -e
+	if [ $exists -eq 0 ] 
+	then
+		die "Target volume for project '$name' exists - please try again!"
+	fi
+}
+
+
+function createConfigFile(){
+	# creates config file, writes it to $1 location
+	loc=$1
+
+	# vars
+	local tmpl_name=$read_project_name
+	local tmpl_url=$read_url
+	local tmpl_interval=$read_interval
+	local tmpl_submodules=$read_submodules
+	
+	if [ $read_submodule_limit = "N" ]
+	then
+		local tmpl_submodules_depth_enabled='# '
+		local tmpl_submodules_depth=50000
+	else 
+		local tmpl_submodules_depth_enabled=''
+		local tmpl_submodules_depth=$read_submodule_limit
+	fi
+
+	cat > $loc <<-EOF
+	# cloner.cfg
+	# main config
+	# created at $(date +"%Y-%m-%d %X")
+
+	# main url - url of main repo - just to clone
+	cloner_repo_url=$tmpl_url
+
+	# project name (names of volumes are derrived from this 
+	cloner_project_name=$tmpl_name
+
+	# cloner interval (in minutes, default=0 - run always)
+	cloner_interval=$tmpl_interval
+
+	# do you need submodules support? (1/0)
+	cloner_submodules=$tmpl_submodules
+
+	# max depth of submodule scan (default = unlimited, uncomment to use)
+	${tmpl_submodules_depth_enabled}cloner_submodule_depth=$tmpl_submodules_depth
+
+	EOF
+}
+
+function generateSSHKey(){
+	# generates ssh key with $1 path and $2 description
+	local keyfile=$1/id_rsa
+	local description=$2
+	echo "Creating SSH deployment key.."
+	ssh-keygen -f $keyfile -b 4096 -C "$description" -N ""
+	echo 
+	echo "Public key is:"
+	echo "-----------------------------------------------------"
+	cat $keyfile.pub
+	echo "-----------------------------------------------------"
+	echo -n "Please make sure that key is set up at your git hosting and press enter.."
+	read
+}
+
+
+function reuseSSHKey(){
+	# pastes ssh key to file $1 with vim
+	local keyfile=$1
+	local scratch=$(mktemp)
+	echo "# Please paste private ssh key here and save this file" > $scratch
+	vim $scratch
+	sed -e 's/#.*$//' $scratch > $keyfile
+	rm $scratch
+	echo "Checking key..."
+	chmod 0600 $keyfile
+	ssh-keygen -y -f $keyfile -P ""	
+}
+
+function createVolume(){
+	# create volume $1
+	local volname=$1
+
+	echo "Creating docker volume $volname"
+	docker volume create $volname > /dev/null
+
+	echo "Populating volume with stuff..."
+	local filler="cloner-creator-filler-$(hostname)"
+	tar c /data | docker run -v $volname:/data -i --name $filler --rm busybox:latest tar -C / -x
+}
+
+# start reading vars
+echo -n "Enter project name: "
+read read_project_name
+checkProjectName "$read_project_name"
+
+
+# repository URL
+echo -n "Enter git repository URL: "
+read read_url
+[ -n "$read_url" ] || die "Empty url is not allowed!" 
+
+# check interval
+echo -n "Enter check interval in minutes [5]: "
+read read_interval
+[ -n "$read_interval" ] || read_interval=5
+[[ "$read_interval" =~ ^[0-9]+$ ]] || echo "Entered interval is not number. Try again.."
+
+# submodule use
+echo -n "Mirror including submodules? [Y/n]" 
+read read_submodules
+[ -n "$read_submodules" ] || read_submodules=Y
+[[ "$read_submodules" =~ ^[Yy]$ ]] && read_submodules=1 || read_submodules=0
+
+# submodule limit
+if [ $read_submodules -eq 1 ] 
+then
+	echo -n "Limit for submodule discovery [<number>/N]: "
+	read read_submodule_limit
+	[ -n "$read_submodule_limit" ] || read_submodule_limit=N
+	if ! [[  "$read_submodule_limit" =~ ^[Nn]$ ]] 
+	then
+		[[ "$read_submodule_limit" =~ ^[0-9]+$ ]] || die "Submodule limit must be n,N or number!"
+	fi
+else
+	read_submodule_limit=N
+fi
+
+# start generating config
+mkdir -p /data/config
+createConfigFile /data/config/cloner.cfg
+
+# use ssh config?
+echo -n "Would you like to use SSH auth? ([C]reate new key/[U]se existing key/[N]o) [C/u/n]: "
+read read_ssh
+[ -n "$read_ssh" ] || read_ssh=C
+[[ "$read_ssh" =~ ^[CcUuNn]$ ]] || die "Invalid SSH key option, script is exiting now.."
+
+# ssh resolutions? 
+# create dir if needed
+[[ "$read_ssh" =~ ^[nN]$ ]] || mkdir -p /data/config/auth/ssh
+
+# generate new key
+if [[ "$read_ssh" =~ ^[Cc]$ ]] 
+then
+	# create key
+	generateSSHKey /data/config/auth/ssh "cloner-deploy-key-$read_project_name"
+fi
+
+# use existing key
+if [[ "$read_ssh" =~ ^[Uu]$ ]] 
+then
+	# load key
+	reuseSSHKey /data/config/auth/ssh/id_rsa
+fi
+
+volume_name=$volume_prefix-$read_project_name
+createVolume $volume_name
+
+echo "First run - initialization of repos..."
+if ! docker run -it -v $volume_name:/data --name cloner-runner-$read_project_name --rm repo-cloner
+then 
+	echo -n "First run failed - remove image? [Y/n]"
+	read read_cleanup
+	[ -n "$read_cleanup" ] || read_cleanup=Y
+	if [[ "$read_cleanup" =~ ^[Yy]$ ]] 
+	then		
+		docker volume rm $volume_name
+	fi
+else
+	echo "Setup has finished!"
+fi
+
+