sanity-meta-openstack.bbclass: add class for bbappend files checking

Add a new class sanity-meta-openstack.bbclass,
to check whether necessary settings are available
for bbappend files and preferred version setting
in this layer to be effective and warn users if not.

In addition, a variable SKIP_SANITY_META_OPENSTACK_CHECK
is added to enable users to explicitly skip the
checking to avoid unwanted warnings.

Signed-off-by: Mingli Yu <Mingli.Yu@windriver.com>
Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/meta-openstack/classes/sanity-meta-openstack.bbclass b/meta-openstack/classes/sanity-meta-openstack.bbclass
new file mode 100644
index 0000000..3d5e57b
--- /dev/null
+++ b/meta-openstack/classes/sanity-meta-openstack.bbclass
@@ -0,0 +1,10 @@
+addhandler openstack_bbappend_distrocheck
+openstack_bbappend_distrocheck[eventmask] = "bb.event.SanityCheck"
+python openstack_bbappend_distrocheck() {
+    skip_check = e.data.getVar('SKIP_META_OPENSTACK_SANITY_CHECK') == "1"
+    if 'openstack' not in e.data.getVar('DISTRO_FEATURES').split() and not skip_check:
+        bb.warn("You have included the meta-openstack layer, but \
+'openstack' has not been enabled in your DISTRO_FEATURES. Some bbappend files \
+and preferred version setting may not take effect. See the meta-openstack README \
+for details on enabling openstack support.")
+}