bitbake: toaster: startup script standalone mode

The toaster starter script was designed to be sourced in
a build environment and set up the build recording environment
to be used in an interactive mode.

For the standalone web server mode, we modify the toaster
script to be run directly from the checked-out sources,
without a build environment set up, and run the web server
alone. In the standalone mode, the build environemnts and
all build activities are controled through the web interface.

(Bitbake rev: c1db4ccf27bedcbab2f03e7539fdb11b042c4fb9)

Signed-off-by: Alexandru DAMIAN <alexandru.damian@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/bin/toaster

@@ -16,9 +16,15 @@
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
 
-# This script enables toaster event logging and
-# starts bitbake resident server
-# use as:  source toaster [start|stop]
+# This script can be run in two modes.
+
+# When used with "source", from a build directory,
+# it enables toaster event logging and starts the bitbake resident server.
+# use as:  source toaster [start|stop] [noweb] [noui]
+
+# When it is called as a stand-alone script, it starts just the
+# web server, and the building shall be done through the web interface.
+# As script, it will not return to the command prompt. Stop with Ctrl-C.
 
 # Helper function to kill a background toaster development server
 
@@ -30,6 +36,8 @@ function webserverKillAll()
 		while kill -0 $(< ${pidfile}) 2>/dev/null; do
 			kill -SIGTERM -$(< ${pidfile}) 2>/dev/null
 			sleep 1;
+			# Kill processes if they are still running - may happen in interactive shells
+			ps fux | grep "python.*manage.py" | awk '{print $2}' | xargs kill
 		done;
 		rm  ${pidfile}
 		fi
@@ -38,6 +46,12 @@ function webserverKillAll()
 
 function webserverStartAll()
 {
+	# do not start if toastermain points to a valid process
+	if ! cat "${BUILDDIR}/.toastermain.pid" 2>/dev/null | xargs -I{} kill -0 {} ; then
+            retval=1
+            rm "${BUILDDIR}/.toastermain.pid"
+        fi
+
         retval=0
         python $BBBASEDIR/lib/toaster/manage.py syncdb || retval=1
         python $BBBASEDIR/lib/toaster/manage.py migrate orm || retval=2
@@ -49,6 +63,8 @@ function webserverStartAll()
             retval=0
             python $BBBASEDIR/lib/toaster/manage.py migrate orm || retval=1
         fi
+        python $BBBASEDIR/lib/toaster/manage.py migrate bldcontrol || retval=1
+
         if [ $retval -eq 0 ]; then
             python $BBBASEDIR/lib/toaster/manage.py runserver 0.0.0.0:8000 </dev/null >${BUILDDIR}/toaster_web.log 2>&1 & echo $! >${BUILDDIR}/.toastermain.pid
             sleep 1
@@ -103,19 +119,43 @@ function notify_chldexit() {
 }
 
 
-# We make sure we're running in the current shell and in a good environment
+BBBASEDIR=`dirname ${BASH_SOURCE}`/..
+RUNNING=0
 
 if [ -z "$ZSH_NAME" ] && [ `basename \"$0\"` = `basename \"$BASH_SOURCE\"` ]; then
-    echo "Error: This script needs to be sourced. Please run as 'source toaster [start|stop]'" 1>&2;
+    # We are called as standalone. We refuse to run in a build environment - we need the interactive mode for that.
+    # Start just the web server, point the web browser to the interface, and start any Django services.
+
+    if [ -n "$BUILDDIR" ]; then
+        echo "Error: build/ directory detected. Standalone Toaster will not start in a build environment." 1>&2;
+        return 1;
+    fi
+
+    # Define a fake builddir where only the pid files are actually created. No real builds will take place here.
+    BUILDDIR=/tmp
+    RUNNING=1
+    function trap_ctrlc() {
+        echo "** Stopping system"
+        webserverKillAll
+        RUNNING=0
+    }
+    webserverStartAll || exit 1
+    xdg-open http://0.0.0.0:8000/ >/dev/null 2>&1 &
+    trap trap_ctrlc SIGINT
+    echo "Running. Stop with Ctrl-C"
+    while [ $RUNNING -gt 0 ]; do
+        wait;
+    done
+    echo "**** Exit"
     exit 1
 fi
 
+# We make sure we're running in the current shell and in a good environment
 if [ -z "$BUILDDIR" ] || [ -z `which bitbake` ]; then
     echo "Error: Build environment is not setup or bitbake is not in path." 1>&2;
     return 2
 fi
 
-BBBASEDIR=`dirname ${BASH_SOURCE}`/..
 
 
 # Verify prerequisites