[PATCH v3] log_srcrev.bbclass: add a bbclass for logging SRCREVs

[Constantin Musca <constantinx.musca@intel.com>]

- add a task which creates a file for each package with the following
format:

${BB_FILENAME},${SRC_URI},${SRCREV},${FROM_AUTOREV}

[YOCTO #3041]

Signed-off-by: Constantin Musca <constantinx.musca@intel.com>
---
 meta/classes/log_srcrev.bbclass | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
 create mode 100644 meta/classes/log_srcrev.bbclass

diff --git a/meta/classes/log_srcrev.bbclass b/meta/classes/log_srcrev.bbclass
new file mode 100644
index 0000000..a04702c
--- /dev/null
+++ b/meta/classes/log_srcrev.bbclass
@@ -0,0 +1,15 @@
+python do_log_srcrev () {
+    srcrev = d.getVar('SRCREV', True)
+    if srcrev:
+        bbfile = d.getVar('BB_FILENAME', True)
+        src_uri = d.getVar('SRC_URI', True)
+        from_autorev = 'yes' if d.getVar('SRCREV', False) == 'AUTOINC' else 'no'
+
+        srcrevfile = d.expand('${TMPDIR}/srcrevs/${MULTIMACH_TARGET_SYS}/${BP}')
+        bb.utils.mkdirhier(os.path.dirname(srcrevfile))
+
+        with open(srcrevfile, 'w') as f:
+            f.write(','.join([bbfile, src_uri, srcrev, from_autorev]))
+}
+
+addtask do_log_srcrev after do_fetch
-- 
1.7.11.7