[OE-core] [PATCH v3 2/2] bitbake: fetch2/git: git-lfs check

[Naveen Saini]

Build will fail if repository has lfs contents in absense of git-lfs tool on host.
Build will pass if repository may or may not contains lfs content if host has git-lfs installed.

Signed-off-by: Naveen Saini <naveen.kumar.saini at intel.com>
---
 bitbake/lib/bb/fetch2/git.py | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/bitbake/lib/bb/fetch2/git.py b/bitbake/lib/bb/fetch2/git.py
index 8185bf4..d862942 100644
--- a/bitbake/lib/bb/fetch2/git.py
+++ b/bitbake/lib/bb/fetch2/git.py
@@ -503,6 +503,15 @@ class Git(FetchMethod):
 
         repourl = self._get_repo_url(ud)
         runfetchcmd("%s remote set-url origin %s" % (ud.basecmd, repourl), d, workdir=destdir)
+
+        if self._contains_lfs(ud, d, destdir):
+            origbbenv = d.getVar("BB_ORIGENV", False)
+            path = origbbenv.getVar("PATH")
+            gitlfstool = bb.utils.which(path, "git-lfs", executable=True)
+            if not gitlfstool:
+                raise bb.fetch2.FetchError("Repository %s has lfs content, install git-lfs plugin on host to download" % (repourl))
+
+
         if not ud.nocheckout:
             if subdir != "":
                 runfetchcmd("%s read-tree %s%s" % (ud.basecmd, ud.revisions[ud.names[0]], readpathspec), d,
@@ -553,6 +562,21 @@ class Git(FetchMethod):
             raise bb.fetch2.FetchError("The command '%s' gave output with more then 1 line unexpectedly, output: '%s'" % (cmd, output))
         return output.split()[0] != "0"
 
+    def _contains_lfs(self, ud, d, wd):
+        """
+        Check git lfs repository
+        """
+        cmd = "%s grep lfs HEAD:.gitattributes | wc -l" % (
+                ud.basecmd)
+        try:
+            output = runfetchcmd(cmd, d, quiet=True, workdir=wd)
+        except bb.fetch2.FetchError:
+            return False
+        if int(output) > 0:
+            return True
+        else:
+            return False
+
     def _get_repo_url(self, ud):
         """
         Return the repository URL
-- 
2.7.4