__netbox_uwsgi: enable further protocols to bind to

Enables multiple protocols like fastcgi or HTTP to bind to. This makes
it more flexible to use.

Also, a little fix for __netbox was done: correctly output a error msg.

type/__netbox/manifest

@@ -127,7 +127,7 @@ fi
 export SMTP_USE_SSL
 if [ -f "$__object/parameter/smtp-use-tls" ]; then
     if [ "$SMTP_USE_SSL" = "True" ]; then
-        echo "options --smtp-use-ssl and --smtp-use-tls are not compatible"
+        echo "options --smtp-use-ssl and --smtp-use-tls are not compatible" >&2
         exit 2
     fi
     SMTP_USE_TLS="True"

type/__netbox_uwsgi/files/uwsgi.ini.sh

@@ -2,6 +2,18 @@
 
 # Generates uwsgi config
 # see https://uwsgi-docs.readthedocs.io/en/latest/Options.html
+#  or https://uwsgi-docs-additions.readthedocs.io/en/latest/Options.html
+
+# params:
+#  1: parameter name
+#  2: parameter value file
+#
+# output: the lines for the configuration option
+multi_options() {
+    while read -r line; do
+        printf "%s = %s\n" "$1" "$line"
+    done < "$2"
+}
 
 # fix missing $__explorer
 # see https://code.ungleich.ch/ungleich-public/cdist/-/issues/834
@@ -13,8 +25,21 @@ cores="$(cat "$__explorer/cpu_cores")"
 
 cat << EOF
 [uwsgi]
-; socket to bind
+; socket(s) to bind
-socket = $HOST
+EOF
+
+# special protocol to bind
+for param in $(find "$__object/parameter/" -maxdepth 1 -name "*-bind" -print); do
+    multi_options "$(basename "$param" | awk -F'-' '{print $1}')-socket" "$param"
+    socket_changes=yes
+done
+# else, default bind to
+if [ -z "$socket_changes" ]; then
+    multi_options "socket" "$__object/parameter/bind-to"
+fi
+
+
+cat << EOF
 
 ; processes and threads
 processes = $(( 2*cores + 1 ))

type/__netbox_uwsgi/man.rst

@@ -9,10 +9,11 @@ cdist-type__netbox_uwsgi - Run NetBox with uWSGI
 DESCRIPTION
 -----------
 This (singleton) type installs uWSGI into the NetBox `python-venv`. It hosts
-the NetBox WSGI application over the WSGI protocol. A further server must be
+the NetBox WSGI application via the WSGI protocol. A further server must be
-installed to provide it as HTTP. This application is available via the
+installed to provide it as HTTP and serve static content. It supports multiple
-`uwsgi-netbox` systemd service. It is controllable via the `netbox` wrapper
+protocols like uwsgi, fastcgi or HTTP to comunicate with the proxy server. This
-service, too.
+application is available via the `uwsgi-netbox` systemd service. It is
+controllable via the `netbox` wrapper service, too.
 
 
 REQUIRED PARAMETERS
@@ -24,7 +25,15 @@ OPTIONAL PARAMETERS
 -------------------
 bind-to
     The socket uwsgi should bind to. Must be UNIX/TCP for the uwsgi protocol.
-    Defaults to ``127.0.0.1:3031``.
+    Defaults to ``127.0.0.1:3031``. Can be set multiple times.
+
+uwsgi-bind
+http-bind
+fastcgi-bind
+scgi-bind
+    Bind the application to a specific protocol instead of implicit uwsgi via
+    ``--bind-to``. If such parameter given, ``--bind-to`` will be ignored. Must
+    be a UNIX/TCP socket. Can be set multiple times.
 
 
 BOOLEAN PARAMETERS
@@ -55,10 +64,18 @@ EXAMPLES
     __netbox $args
     require="__netbox" __netbox_uwsgi
 
-    # with special bind
+    # with multiple binds
+    __netbox $args
     require="__netbox" __netbox_uwsgi --bind-to 0.0.0.0:3032 \
                                       --bind-to 0.0.0.0:3033
 
+    # with multiple protocols
+    #  parameter `--bind-to` will be ignored
+    __netbox $args
+    require="__netbox" __netbox_uwsgi --uwsgi-bind 0.0.0.0:3031 \
+                                      --http-bind 0.0.0.0:8080 \
+                                      --fastcgi-bind 1.2.3.4:5678
+
 
 SEE ALSO
 --------

type/__netbox_uwsgi/parameter/optional_multiple

@@ -1 +1,5 @@
 bind-to
+uwsgi-bind
+http-bind
+fastcgi-bind
+scgi-bind