[OE-core] [thud 10/18] cve-update-db-native: don't refresh more than once an hour

[Armin Kuster]

From: Ross Burton <ross.burton at intel.com>

We already fetch the yearly CVE metadata and check that for updates before
downloading the full data, but we can speed up CVE checking further by only
checking the CVE metadata once an hour.

(From OE-Core rev: 50d898fd360c58fe85460517d965f62b7654771a)

Signed-off-by: Ross Burton <ross.burton at intel.com>
Signed-off-by: Richard Purdie <richard.purdie at linuxfoundation.org>
Signed-off-by: Armin Kuster <akuster808 at gmail.com>
---
 meta/recipes-core/meta/cve-update-db-native.bb | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/meta/recipes-core/meta/cve-update-db-native.bb b/meta/recipes-core/meta/cve-update-db-native.bb
index 2c427a5..19875a4 100644
--- a/meta/recipes-core/meta/cve-update-db-native.bb
+++ b/meta/recipes-core/meta/cve-update-db-native.bb
@@ -31,8 +31,16 @@ python do_populate_cve_db() {
     db_dir = os.path.join(d.getVar("DL_DIR"), 'CVE_CHECK')
     db_file = os.path.join(db_dir, 'nvdcve_1.0.db')
     json_tmpfile = os.path.join(db_dir, 'nvd.json.gz')
-    proxy = d.getVar("https_proxy")
 
+    # Don't refresh the database more than once an hour
+    try:
+        import time
+        if time.time() - os.path.getmtime(db_file) < (60*60):
+            return
+    except OSError:
+        pass
+
+    proxy = d.getVar("https_proxy")
     if proxy:
         # instantiate an opener but do not install it as the global
         # opener unless if we're really sure it's applicable for all
-- 
2.7.4