bitbake: toaster: create Build methods for calculating progress and ETA

We move the code to calculate build progress as percent
and the ETA of the build to the model, so that they can be
reused across different pages.

(Bitbake rev: c2ced09e7ea4a1762d2788bb12a761734d20fd8e)

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

bitbake/lib/toaster/orm/models.py

@@ -120,6 +120,24 @@ class Build(models.Model):
     build_name = models.CharField(max_length=100)
     bitbake_version = models.CharField(max_length=50)
 
+    def completeper(self):
+        tf = Task.objects.filter(build = self)
+        tfc = tf.count()
+        if tfc > 0:
+            completeper = tf.exclude(order__isnull=True).count()*100/tf.count()
+        else:
+            completeper = 0
+        return completeper
+
+    def eta(self):
+        from django.utils import timezone
+        eta = 0
+        completeper = self.completeper()
+        if self.completeper() > 0:
+            eta = timezone.now() + ((timezone.now() - self.started_on)*(100-completeper)/completeper)
+        return eta
+
+
     def get_sorted_target_list(self):
         tgts = Target.objects.filter(build_id = self.id).order_by( 'target' );
         return( tgts );