chg: dev: [pandachi-install] streamline installation and update in functions

bin/pandachi-install

@@ -9,19 +9,40 @@ wget http://docker.0k.io/get/ -qO - | bash
     exit 1
 }
 
+
+clone_or_update() {
+    local pkg="$1" branch=${2:-master} \
+          DEPLOY_PATH="/opt/apps" \
+          GIT_BASE="git.0k.io:/var/git/0k" \
+          current_branch
+    if [ -d "$DEPLOY_PATH/$pkg" ]; then
+        cd "$DEPLOY_PATH/$pkg"
+        current_branch=$(git rev-parse --abbrev-ref HEAD)
+        if [ "$current_branch" != "$branch" ]; then
+            echo "Fatal: $DEPLOY_PATH/$pkg git repos has unexpected branch checkouted."
+            echo "  To avoid changing thing, we prefer to bailout."
+            return 1
+        fi
+        git pull -r || return 1
+    else
+        mkdir -p "$DEPLOY_PATH" && cd "$DEPLOY_PATH"
+        git clone "$GIT_BASE/${pkg}" -b "$branch" --depth=1
+    fi
+}
+
+install_bin() {
+    local path="$1" DEST_PATH=/usr/local/bin
+    ln -sfnv "$path"/* "$DEST_PATH" || return 1
+    find -L "$DEST_PATH" -maxdepth 1 -type l -ilname "$path"/\* -exec rm -v {} \; || return 1
+}
+
 set -e
 
-if ! [ -d "/opt/apps/pandachi-deploy" ]; then
-    mkdir -p /opt/apps && cd /opt/apps
-    git clone git.0k.io:/var/git/0k/pandachi-deploy.git
-fi
+clone_or_update pandachi-manage || exit 1
+install_bin /opt/apps/pandachi-manage/bin
 
-if ! [ -d "/opt/apps/pandachi-manage" ]; then
-    mkdir -p /opt/apps && cd /opt/apps
-    git clone git.0k.io:/var/git/0k/pandachi-manage.git
-fi
+clone_or_update pandachi-deploy || exit 1
 
-ln -sfn /opt/apps/pandachi-manage/bin/* /usr/local/bin/
 
 #[ -e /etc/compose.conf ] || ln -sfv /opt/apps/pandachi-deploy/etc/compose.conf /etc/compose.conf
 
@@ -97,11 +118,10 @@ if [ "$MAIN_PASSWORD" ]; then
     sed -ri "s/^(\s+admin-password:\s+).*$/\1$MAIN_PASSWORD/g" compose.yml
 fi
 
-pip install ovh
 
-ln -sf /opt/apps/pandachi-deploy/bin/* /usr/local/bin/
+pip install ovh
 
 #compose --debug up odoo apache
 
 ## Marker to probe if this script finished it's job
-echo "done" > /var/run/pandachi-installer.0k.io.state
+echo "done" > /var/run/pandachi-installer.0k.io.state