bitbake: prserv: Ensure data is committed

In exclusive mode, we need to complete the transaction for writes to make
it to the database. Therefore add sync calls to ensure this happens.

Autocommit mode is significantly (100 times) slower so caching the
data is of significant benefit.

(Bitbake rev: 4e55f7821786a59c2cd7dbd8bfa2a22f5f196e99)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/prserv/db.py

@@ -43,6 +43,10 @@ class PRTable(object):
                     continue
                 raise exc
 
+    def sync(self):
+        self.conn.commit()
+        self._execute("BEGIN EXCLUSIVE TRANSACTION")
+
     def _getValueHist(self, version, pkgarch, checksum):
         data=self._execute("SELECT value FROM %s WHERE version=? AND pkgarch=? AND checksum=?;" % self.table,
                            (version, pkgarch, checksum))

bitbake/lib/prserv/serv.py

@@ -74,7 +74,7 @@ class PRServer(SimpleXMLRPCServer):
             except:
                 self.handle_error(request, client_address)
                 self.shutdown_request(request)
-
+                self.table.sync()
 
     def process_request(self, request, client_address):
         self.requestqueue.put((request, client_address))
@@ -120,6 +120,7 @@ class PRServer(SimpleXMLRPCServer):
         while not self.quit:
             self.handle_request()
 
+        self.table.sync()
         logger.info("PRServer: stopping...")
         self.server_close()
         return