bitbake: toaster: runbuilds Write the pidfile in python rather than shell script

Write the pid file out in the start up of this management command. This
ensures this has happened instead of relying on the shell command having
been run which may or may not be the case. This also makes it simpler for
testing.

Couple of clean ups of runbuilds as identified by pyflake

(Bitbake rev: 999e980ee1a58d16f33ef6c0e41aecdcd0206f39)

Signed-off-by: Michael Wood <michael.g.wood@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/bin/toaster

@@ -254,7 +254,7 @@ case $CMD in
             return 4
         fi
         export BITBAKE_UI='toasterui'
-        $MANAGE runbuilds & echo $! >${BUILDDIR}/.runbuilds.pid
+        $MANAGE runbuilds &
         # set fail safe stop system on terminal exit
         trap stop_system SIGHUP
         echo "Successful ${CMD}."

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

@@ -11,9 +11,11 @@ from orm.models import Build, LogMessage, Target
 import logging
 import traceback
 import signal
+import os
 
 logger = logging.getLogger("toaster")
 
+
 class Command(NoArgsCommand):
     args = ""
     help = "Schedules and executes build requests as possible. "\
@@ -50,7 +52,7 @@ class Command(NoArgsCommand):
                 logger.debug("runbuilds: No build env")
                 return
 
-            logger.info("runbuilds: starting build %s, environment %s" % \
+            logger.info("runbuilds: starting build %s, environment %s" %
                         (br, bec.be))
 
             # let the build request know where it is being executed
@@ -80,7 +82,7 @@ class Command(NoArgsCommand):
 
     def archive(self):
         for br in BuildRequest.objects.filter(state=BuildRequest.REQ_ARCHIVE):
-            if br.build == None:
+            if br.build is None:
                 br.state = BuildRequest.REQ_FAILED
             else:
                 br.state = BuildRequest.REQ_COMPLETED
@@ -99,10 +101,10 @@ class Command(NoArgsCommand):
             Q(updated__lt=timezone.now() - timedelta(seconds=30))
         ).update(lock=BuildEnvironment.LOCK_FREE)
 
-
         # update all Builds that were in progress and failed to start
-        for br in BuildRequest.objects.filter(state=BuildRequest.REQ_FAILED,
-                                              build__outcome=Build.IN_PROGRESS):
+        for br in BuildRequest.objects.filter(
+                state=BuildRequest.REQ_FAILED,
+                build__outcome=Build.IN_PROGRESS):
             # transpose the launch errors in ToasterExceptions
             br.build.outcome = Build.FAILED
             for brerror in br.brerror_set.all():
@@ -117,7 +119,6 @@ class Command(NoArgsCommand):
             br.environment.lock = BuildEnvironment.LOCK_FREE
             br.environment.save()
 
-
         # update all BuildRequests without a build created
         for br in BuildRequest.objects.filter(build=None):
             br.build = Build.objects.create(project=br.project,
@@ -144,7 +145,7 @@ class Command(NoArgsCommand):
 
         # Make sure the LOCK is removed for builds which have been fully
         # cancelled
-        for br in BuildRequest.objects.filter(\
+        for br in BuildRequest.objects.filter(
                       Q(build__outcome=Build.CANCELLED) &
                       Q(state=BuildRequest.REQ_CANCELLING) &
                       ~Q(environment=None)):
@@ -168,6 +169,12 @@ class Command(NoArgsCommand):
             logger.warn("runbuilds: schedule exception %s" % str(e))
 
     def handle_noargs(self, **options):
+        pidfile_path = os.path.join(os.environ.get("BUILDDIR", "."),
+                                    ".runbuilds.pid")
+
+        with open(pidfile_path, 'w') as pidfile:
+            pidfile.write("%s" % os.getpid())
+
         self.runbuild()
 
         signal.signal(signal.SIGUSR1, lambda sig, frame: None)

bitbake/lib/toaster/orm/management/commands/lsupdates.py

@@ -90,7 +90,6 @@ class Command(NoArgsCommand):
             from urlparse import urlparse
 
         proxy_settings = os.environ.get("http_proxy", None)
-        oe_core_layer = 'openembedded-core'
 
         def _get_json_response(apiurl=DEFAULT_LAYERINDEX_SERVER):
             http_progress = Spinner()