From 95c65166b107b7366611750c020b190018393438 Mon Sep 17 00:00:00 2001
From: Matthieu Patou <mat@matws.net>
Date: Thu, 11 Nov 2010 22:16:06 +0300
Subject: [PATCH] Introduce a cached variant of the build farm, correct cached
 build to handle correctly CachedUploadBuild class

---
 buildfarm/__init__.py | 60 +++++++++++++++++++++++++++++++++++++++++++
 buildfarm/data.py     | 10 ++++++--
 2 files changed, 68 insertions(+), 2 deletions(-)

diff --git a/buildfarm/__init__.py b/buildfarm/__init__.py
index 13e38bb6..bf6b0b03 100644
--- a/buildfarm/__init__.py
+++ b/buildfarm/__init__.py
@@ -132,3 +132,63 @@ class BuildFarm(object):
                         yield self.upload_builds.get_build(host, tree, compiler)
                     except data.NoSuchBuildError:
                         continue
+
+
+class CachingBuildFarm(BuildFarm):
+
+    def __init__(self, path=None, cachedirname=None):
+        self.cachedir = None
+        super(CachingBuildFarm, self).__init__(path)
+
+        if cachedirname:
+            self.cachedir = os.path.join(self.path, cachedirname)
+        else:
+            self.cachedir = os.path.join(self.path, "toto")
+        self.builds = self._open_build_results()
+        self.upload_builds = self._open_upload_build_results()
+
+    def _open_build_results(self):
+        from buildfarm import data
+        if not self.cachedir:
+            return
+        return data.CachingBuildResultStore(os.path.join(self.path, "data", "oldrevs"),
+                self.cachedir)
+
+    def _open_upload_build_results(self):
+        from buildfarm import data
+        if not self.cachedir:
+            return
+        return data.CachingUploadBuildResultStore(os.path.join(self.path, "data", "upload"),
+                self.cachedir)
+
+    def lcov_status(self, tree):
+        """get status of build"""
+        from buildfarm import data, util
+        cachefile = self.builds.get_lcov_cached_status(self.LCOVHOST, tree)
+        file = os.path.join(self.lcovdir, self.LCOVHOST, tree, "index.html")
+        try:
+            st1 = os.stat(file)
+        except OSError:
+            # File does not exist
+            raise data.NoSuchBuildError(tree, self.LCOVHOST, "lcov")
+        try:
+            st2 = os.stat(cachefile)
+        except OSError:
+            # file does not exist
+            st2 = None
+
+        if st2 and st1.st_ctime <= st2.st_mtime:
+            ret = util.FileLoad(cachefile)
+            if ret == "":
+                return None
+            return ret
+
+        lcov_html = util.FileLoad(file)
+        perc = lcov_extract_percentage(lcov_html)
+        if perc is None:
+            ret = ""
+        else:
+            ret = perc
+        if not self.readonly:
+            util.FileSave(cachefile, ret)
+        return perc
diff --git a/buildfarm/data.py b/buildfarm/data.py
index 9f7708cd..0e09b137 100644
--- a/buildfarm/data.py
+++ b/buildfarm/data.py
@@ -270,7 +270,10 @@ class CachingBuild(Build):
     to calculate."""
 
     def revision_details(self):
-        cachef = self._store.cache_fname(self.tree, self.host, self.compiler, self.rev)
+        if self.rev:
+            cachef = self._store.cache_fname(self.tree, self.host, self.compiler, self.rev)
+        else:
+            cachef = self._store.cache_fname(self.tree, self.host, self.compiler)
         st1 = os.stat("%s.log" % self.basename)
 
         try:
@@ -316,7 +319,10 @@ class CachingBuild(Build):
         return ret
 
     def status(self):
-        cachefile = self._store.cache_fname(self.tree, self.host, self.compiler, self.rev)+".status"
+        if self.rev:
+            cachefile = self._store.cache_fname(self.tree, self.host, self.compiler, self.rev)+".status"
+        else:
+            cachefile = self._store.cache_fname(self.tree, self.host, self.compiler)+".status"
 
         st1 = os.stat("%s.log" % self.basename)
 
-- 
2.34.1