# HG changeset patch
# User Goffi <goffi@goffi.org>
# Date 1413803551 -7200
# Node ID f0a59c8f349044e9a1339e682a0ea9405e37dcfe
# Parent  b10f0188594964dcaac0d18d10f850fe87e7e334
docker: added docker presence check + if image are not present locally on run, download them without catching the output (so we can se the progress)

diff -r b10f01885949 -r f0a59c8f3490 docker/libervia_cont.sh
--- a/docker/libervia_cont.sh	Sun Oct 19 19:44:47 2014 +0200
+++ b/docker/libervia_cont.sh	Mon Oct 20 13:12:31 2014 +0200
@@ -16,7 +16,7 @@
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-VERSION="0.1.0"
+VERSION="0.2.0"
 ACCOUNT="salutatoi"
 
 CONTAINERS="prosody sat_pubsub salut sat libervia"
@@ -24,7 +24,8 @@
 DETACH="-d"
 TERM="-ti"
 
-VOLUME_CONT="$ACCOUNT/data"
+VOLUME_NAME="data"
+VOLUME_CONT="$ACCOUNT/$VOLUME_NAME"
 VOLUME_ALIAS="sat_data"
 VOLUME="--volumes-from $VOLUME_ALIAS"
 
@@ -42,6 +43,8 @@
 PORT_8443_NAME="HTTPS"
 NO_PORT="No public port"
 
+DOCKER_EXE="docker"
+
 USAGE="Usage: $0 [run|stop|update|backup|ports] [ARGS...]"
 
 HELP_SITE="http://wiki.goffi.org/wiki/Docker/en"
@@ -105,6 +108,32 @@
     echo $ARG
 }
 
+download_missing() {
+	# download images wich are not present locally
+	for cont in $VOLUME_NAME $CONTAINERS; do
+		image="$ACCOUNT/$cont"
+		docker inspect $image:latest > /dev/null 2>&1
+		if [ $? -ne 0 ]; then
+			printf "$image is not present locally, downloading it\n"
+			docker pull $image:latest
+			if [ $? -eq 0 ]; then
+				printf "\nDownload of latest $image finished\n\n"
+			else
+				printf "\nError while downloading $image, please check your connection and logs\n"
+				return 1
+			fi
+		fi
+	done
+}
+
+check_docker() {
+	which $DOCKER_EXE > /dev/null 2>&1
+	if [ $? -ne 0 ]; then
+		printf "Docker is not installed or not accessible, please install it.\nYou can check http://wiki.goffi.org/wiki/Docker/en for instructions\n"
+		return 1
+	fi
+}
+
 parse_run_args() {
 	# manage arguments for run command
 
@@ -144,6 +173,7 @@
     done
 }
 
+check_docker || exit 1
 
 if [ $# -ge 1 ];then
     case $1 in
@@ -165,6 +195,8 @@
 case $CMD in
     RUN)
         parse_run_args "$@"
+        download_missing || exit 1
+
         printf "Running data container... "
         docker_id=$(docker run -d -ti --name $VOLUME_ALIAS $VOLUME_CONT 2>&1)
         if [ $? -eq 0 ]; then