bitbake: toaster: add two-stage commit startup logic

Toaster start script lunches multiple process components
of the toaster system.

This patch adds logic into the startup script to
safely fail startup and do proper cleanup on any error
that may happen during system start.

Bitbake needs to return 0 if it will successfully lunches
the server-mode.

(Bitbake rev: f43d284e7ae752049711d8215a6020bee6966d45)

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

bitbake/bin/bitbake

@@ -343,6 +343,7 @@ def main():
             server_connection.terminate()
     else:
         print("server address: %s, server port: %s" % (server.serverImpl.host, server.serverImpl.port))
+        return 0
 
     return 1
 

bitbake/bin/toaster

@@ -51,6 +51,11 @@ function webserverStartAll()
         fi
         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
+            if ! cat "${BUILDDIR}/.toastermain.pid" | xargs -I{} kill -0 {} ; then
+                retval=1
+                rm "${BUILDDIR}/.toastermain.pid"
+            fi
         fi
         return $retval
 }
@@ -120,9 +125,13 @@ else
 fi
 
 NOTOASTERUI=0
-if [ "x$2" == "xnoui" ]; then
-    NOTOASTERUI=1
-fi
+for param in $*; do
+    case $param in
+    noui )
+            NOTOASTERUI=1
+    ;;
+    esac
+done
 
 echo "The system will $CMD."
 
@@ -157,22 +166,38 @@ fi
 
 case $CMD in
     start )
+        start_success=1
         addtoConfiguration "INHERIT+=\"toaster buildhistory\"" toaster.conf
-        webserverStartAll || return 4
+        if ! webserverStartAll; then
+            echo "Failed ${CMD}."
+            return 4
+        fi
         unset BBSERVER
         bitbake --postread conf/toaster.conf --server-only -t xmlrpc -B localhost:8200
-        export BBSERVER=localhost:8200
-        if [ $NOTOASTERUI == 0 ]; then        # we start the TOASTERUI only if not inhibited
-            bitbake --observe-only -u toasterui >${BUILDDIR}/toaster_ui.log 2>&1 & echo $! >${BUILDDIR}/.toasterui.pid
+        if [ $? -ne 0 ]; then
+            start_success=0
+            echo "Bitbake server start failed"
+        else
+            export BBSERVER=localhost:8200
+            if [ $NOTOASTERUI == 0 ]; then        # we start the TOASTERUI only if not inhibited
+                bitbake --observe-only -u toasterui >${BUILDDIR}/toaster_ui.log 2>&1 & echo $! >${BUILDDIR}/.toasterui.pid
+            fi
+        fi
+        if [ $start_success -eq 1 ]; then
+            # set fail safe stop system on terminal exit
+            trap stop_system SIGHUP
+            echo "Successful ${CMD}."
+        else
+            # failed start, do stop
+            stop_system
+            echo "Failed ${CMD}."
         fi
-        # stop system on terminal exit
-        trap stop_system SIGHUP
     ;;
     stop )
         stop_system
         trap '' SIGHUP
+        echo "Successful ${CMD}."
     ;;
 esac
 
-echo "Successful ${CMD}."