From 48adf40595f127c2bd167aa6774f4ba67e191c0f Mon Sep 17 00:00:00 2001
From: Nick Mathewson <nickm@torproject.org>
Date: Sun, 16 Nov 2008 22:27:17 +0000
Subject: attach per-file type-specific metainfo to packages.  use metainfo to
 tell what is already installed.  use database to track things we have
 installed with not attacked version.  notice when we have installable files
 and optionally install them.

git-svn-id: file:///home/or/svnrepo/updater/trunk@17294 55e972cd-5a19-0410-ae62-a4d7a52db4cd
---
 lib/thandy/repository.py | 33 +++++++++++++++++++++++++++++++--
 1 file changed, 31 insertions(+), 2 deletions(-)

(limited to 'lib/thandy/repository.py')

diff --git a/lib/thandy/repository.py b/lib/thandy/repository.py
index 636ff86..696bbec 100644
--- a/lib/thandy/repository.py
+++ b/lib/thandy/repository.py
@@ -260,7 +260,7 @@ class LocalRepository:
                 needRole='bundle')
             return pkg
 
-    def getRequestedFile(self, relPath):
+    def getRequestedFile(self, relPath, pkgSystems=None):
         """DOCDOC"""
         for f in self._metafiles:
             if f.getRelativePath() == relPath:
@@ -279,12 +279,14 @@ class LocalRepository:
 
         return None
 
-    def getFilesToUpdate(self, now=None, trackingBundles=(), hashDict=None):
+    def getFilesToUpdate(self, now=None, trackingBundles=(), hashDict=None,
+                         pkgSystems=None, installableDict=None):
         """Return a set of relative paths for all files that we need
            to fetch.  Assumes that we care about the bundles
            'trackingBundles'.  If hashDict is provided, add mappings to it
            from the relative paths we want to fecth to the hashes that we
            want those items to have, when we know those hashes.
+           DOCDOC pkgSystems, installableDict
         """
 
         if now == None:
@@ -294,6 +296,9 @@ class LocalRepository:
             # Use a dummy hashdict.
             hashDict = {}
 
+        if installableDict == None:
+            installableDict = {}
+
         need = set()
 
         # Fetch missing metafiles.
@@ -444,8 +449,29 @@ class LocalRepository:
         # files?
         for pfile in packages.values():
             package = pfile.get()
+
+            alreadyInstalled = {}
+            allHandles = {}
+            if pkgSystems is not None:
+                psys = pkgSystems.getSysForPackage(package)
+                if psys is None:
+                    logging.info("No way to check whether a %s package is "
+                                 "up-to-date." % package['format'])
+                else:
+                    handles = psys.packageHandlesFromJSon(package)
+
+                    for h in handles:
+                        allHandles[h.getRelativePath()] = h
+                        if h.isInstalled():
+                            alreadyInstalled[h.getRelativePath()] = h
+
             for f in package['files']:
                 rp, h = f[:2]
+                if alreadyInstalled.has_key(rp):
+                    logging.info("%s is already installed; no need to download",
+                                 rp)
+                    continue
+
                 h_expected = thandy.formats.parseHash(h)
                 hashDict[rp] = h_expected
                 fn = self.getFilename(rp)
@@ -459,6 +485,9 @@ class LocalRepository:
                 if h_got != h_expected:
                     logging.info("Hash for %s not as expected; must load.", rp)
                     need.add(rp)
+                else:
+                    if allHandles.has_key(rp):
+                        installableDict[rp] = allHandles[rp]
 
         # Okay; these are the files we need.
         return need
-- 
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