buildhistory: record additional image info

Record some additional information about images - the uncompressed size
of the final image as well as the values of various variables that may
have influenced its contents. This is recorded in a machine-readable
"image-info.txt" file similar in structure to the package history files.

Also add some code to analyse changes to these values. (Most of the
variable values aren't monitored directly but will be used as contextual
information when they change at the same time as the content of the
image changing.)

(From OE-Core rev: 459ed6759a307b389f6ec1874136ec9aa0749120)

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 18 insertions, 0 deletions

diff --git a/meta/classes/buildhistory.bbclass b/meta/classes/buildhistory.bbclass
index 34cc297909..69a9d02a5a 100644
--- a/meta/classes/buildhistory.bbclass
+++ b/meta/classes/buildhistory.bbclass
@@ -312,6 +312,14 @@ buildhistory_get_imageinfo() {
         # This awk script is somewhat messy, but handles where the size is not printed for device files under pseudo
         ( cd ${IMAGE_ROOTFS} && find . -ls | awk '{ if ( $7 ~ /[0-9]/ ) printf "%s %10-s %10-s %10s %s %s %s\n", $3, $5, $6, $7, $11, $12, $13 ; else printf "%s %10-s %10-s %10s %s %s %s\n", $3, $5, $6, 0, $10, $11, $12 }' > ${BUILDHISTORY_DIR_IMAGE}/files-in-image.txt )
 
+        # Record some machine-readable meta-information about the image
+        echo -n > ${BUILDHISTORY_DIR_IMAGE}/image-info.txt
+        cat >> ${BUILDHISTORY_DIR_IMAGE}/image-info.txt <<END
+${@buildhistory_get_imagevars(d)}
+END
+        imagesize=`du -ks ${IMAGE_ROOTFS} | awk '{ print $1 }'`
+        echo "IMAGESIZE = $imagesize" >> ${BUILDHISTORY_DIR_IMAGE}/image-info.txt
+
         # Add some configuration information
         echo "${MACHINE}: ${IMAGE_BASENAME} configured for ${DISTRO} ${DISTRO_VERSION}" > ${BUILDHISTORY_DIR_IMAGE}/build-id
 
@@ -330,6 +338,16 @@ def buildhistory_get_layers(d):
         return layertext
 
 
+def buildhistory_get_imagevars(d):
+        imagevars = "DISTRO DISTRO_VERSION USER_CLASSES IMAGE_CLASSES IMAGE_FEATURES IMAGE_LINGUAS IMAGE_INSTALL BAD_RECOMMENDATIONS ROOTFS_POSTPROCESS_COMMAND IMAGE_POSTPROCESS_COMMAND"
+
+        ret = ""
+        for var in imagevars.split():
+                value = d.getVar(var, True) or ""
+                ret += "%s = %s\n" % (var, value)
+        return ret.rstrip('\n')
+
+
 buildhistory_commit() {
         if [ ! -d ${BUILDHISTORY_DIR} ] ; then
                 # Code above that creates this dir never executed, so there can't be anything to commit