bitbake: toaster: write pre-read conf file for build variables

We change the setting of variables from directly injection
into the set-up cooker to writing a conf file that is pre-read
on bitbake server startup. This is needed because the injection
can only happen after the variable set is parsed, and the variables
already inferred, so setting up variables happens too late.

[YOCTO #7045]

(Bitbake rev: 854f680b5b9d2d0fa796af84cb1218545fbfc55a)

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

bitbake/bin/toaster

@@ -251,7 +251,11 @@ case $CMD in
             return 4
         fi
         unset BBSERVER
-        bitbake --postread conf/toaster.conf --server-only -t xmlrpc -B 0.0.0.0:0
+        PREREAD=""
+        if [ -e conf/toaster-pre.conf ]; then
+                PREREAD="--read conf/toaster-pre.conf"
+        fi
+        bitbake $PREREAD --postread conf/toaster.conf --server-only -t xmlrpc -B 0.0.0.0:0
         if [ $? -ne 0 ]; then
             start_success=0
             echo "Bitbake server start failed"

bitbake/lib/toaster/bldcontrol/bbcontroller.py

@@ -135,6 +135,11 @@ class BuildEnvironmentController(object):
         bblayerconffile.write("# line added by toaster build control\nBBLAYERS = \"" + " ".join(layerlist) + "\"")
         bblayerconffile.close()
 
+    def writePreConfFile(self, variable_list):
+        prefilepath = os.path.join(self.be.builddir, "conf/toaster-pre.conf")
+        with open(prefilepath, "w") as prefile:
+            for i in variable_list:
+                prefile.write("%s=\"%s\"\n" % (i.name, i.value))
 
 
     def startBBServer(self, brbe):

bitbake/lib/toaster/bldcontrol/management/commands/runbuilds.py

@@ -53,14 +53,11 @@ class Command(NoArgsCommand):
 
             # set up the buid environment with the needed layers
             bec.setLayers(br.brbitbake_set.all(), br.brlayer_set.all())
+            bec.writePreConfFile(br.brvariable_set.all())
 
             # get the bb server running with the build req id and build env id
             bbctrl = bec.getBBController("%d:%d" % (br.pk, bec.be.pk))
 
-            # set the build configuration
-            for variable in br.brvariable_set.all():
-                bbctrl.setVariable(variable.name, variable.value)
-
             # trigger the build command
             task = reduce(lambda x, y: x if len(y)== 0 else y, map(lambda y: y.task, br.brtarget_set.all()))
             if len(task) == 0:

bitbake/lib/toaster/orm/models.py

@@ -529,6 +529,7 @@ class Recipe_Dependency(models.Model):
 
 
 class Machine(models.Model):
+    search_allowed_fields = ["name", "description"]
     layer_source = models.ForeignKey('LayerSource', default = None, null = True)  # from where did we get this machine
     up_id = models.IntegerField(null = True, default = None)                      # id of entry in the source
     up_date = models.DateTimeField(null = True, default = None)