From: David Stainton <dstainton415@gmail.com>
Date: Thu, 11 Jun 2015 21:20:40 +0000 (-0700)
Subject: Add check_file_db_exists to backupdb api
X-Git-Url: https://git.rkrishnan.org/pf/content/en/seg/something?a=commitdiff_plain;h=7c937eabe7e35b94a2e35f6e6b3af02b825e5f5d;p=tahoe-lafs%2Ftahoe-lafs.git

Add check_file_db_exists to backupdb api

- this backupdb utility function checks to if a file's entry
exists in the db but does not stat the file on disk or otherwise
talk to the filesystem
---

diff --git a/src/allmydata/backupdb.py b/src/allmydata/backupdb.py
index d0c22616..537d4305 100644
--- a/src/allmydata/backupdb.py
+++ b/src/allmydata/backupdb.py
@@ -137,6 +137,21 @@ class BackupDB_v2:
         self.connection = connection
         self.cursor = connection.cursor()
 
+    def check_file_db_exists(self, path):
+        """I will tell you if a given file has an entry in my database or not
+        by returning True or False.
+        """
+        c = self.cursor
+        c.execute("SELECT size,mtime,ctime,fileid"
+                  " FROM local_files"
+                  " WHERE path=?",
+                  (path,))
+        row = self.cursor.fetchone()
+        if not row:
+            return False
+        else:
+            return True
+
     def check_file(self, path, use_timestamps=True):
         """I will tell you if a given local file needs to be uploaded or not,
         by looking in a database and seeing if I have a record of this file