hgweb: refresh hgweb.repo on phase change (issue4061)

Make hgweb.refresh() also look at phaseroots file (in addition to 00changelog.i
file) and reload the repo when os.stat returns different mtime or size than
cached, signifying the file was modified.

This way if user changes phase of a changeset (secret <-> draft), there's no
need to restart hg serve to see the change.

mercurial/hgweb/common.py

@@ -112,9 +112,9 b' def _statusmessage(code):'
 def statusmessage(code, message=None):
     return '%d %s' % (code, message or _statusmessage(code))
 
-def get_stat(spath):
-    """stat changelog if it exists, spath otherwise"""
-    cl_path = os.path.join(spath, "00changelog.i")
+def get_stat(spath, fn="00changelog.i"):
+    """stat fn (00changelog.i by default) if it exists, spath otherwise"""
+    cl_path = os.path.join(spath, fn)
     if os.path.exists(cl_path):
         return os.stat(cl_path)
     else:

mercurial/hgweb/hgweb_mod.py

@@ -71,8 +71,8 b' class hgweb(object):'
         r.baseui.setconfig('ui', 'nontty', 'true', 'hgweb')
         self.repo = r
         hook.redirect(True)
+        self.repostate = ((-1, -1), (-1, -1))
         self.mtime = -1
-        self.size = -1
         self.reponame = name
         self.archives = 'zip', 'gz', 'bz2'
         self.stripecount = 1
@@ -107,9 +107,12 b' class hgweb(object):'
 
     def refresh(self, request=None):
         st = get_stat(self.repo.spath)
-        # compare changelog size in addition to mtime to catch
-        # rollbacks made less than a second ago
-        if st.st_mtime != self.mtime or st.st_size != self.size:
+        pst = get_stat(self.repo.spath, 'phaseroots')
+        # changelog mtime and size, phaseroots mtime and size
+        repostate = ((st.st_mtime, st.st_size), (pst.st_mtime, pst.st_size))
+        # we need to compare file size in addition to mtime to catch
+        # changes made less than a second ago
+        if repostate != self.repostate:
             r = hg.repository(self.repo.baseui, self.repo.root)
             self.repo = self._getview(r)
             self.maxchanges = int(self.config("web", "maxchanges", 10))
@@ -121,8 +124,9 b' class hgweb(object):'
             encoding.encoding = self.config("web", "encoding",
                                             encoding.encoding)
             # update these last to avoid threads seeing empty settings
+            self.repostate = repostate
+            # mtime is needed for ETag
             self.mtime = st.st_mtime
-            self.size = st.st_size
         if request:
             self.repo.ui.environ = request.env
 

tests/test-hgweb.t

@@ -531,6 +531,50 b' static file'
   304 Not Modified
   
 
+phase changes are refreshed (issue4061)
+
+  $ echo bar >> foo
+  $ hg ci -msecret --secret
+  $ "$TESTDIR/get-with-headers.py" localhost:$HGPORT 'log?style=raw'
+  200 Script output follows
+  
+  
+  # HG changelog
+  # Node ID 2ef0ac749a14e4f57a5a822464a0902c6f7f448f
+  
+  changeset:   2ef0ac749a14e4f57a5a822464a0902c6f7f448f
+  revision:    0
+  user:        test
+  date:        Thu, 01 Jan 1970 00:00:00 +0000
+  summary:     base
+  branch:      default
+  tag:         tip
+  
+  
+  $ hg phase --draft tip
+  $ "$TESTDIR/get-with-headers.py" localhost:$HGPORT 'log?style=raw'
+  200 Script output follows
+  
+  
+  # HG changelog
+  # Node ID a084749e708a9c4c0a5b652a2a446322ce290e04
+  
+  changeset:   a084749e708a9c4c0a5b652a2a446322ce290e04
+  revision:    1
+  user:        test
+  date:        Thu, 01 Jan 1970 00:00:00 +0000
+  summary:     secret
+  branch:      default
+  tag:         tip
+  
+  changeset:   2ef0ac749a14e4f57a5a822464a0902c6f7f448f
+  revision:    0
+  user:        test
+  date:        Thu, 01 Jan 1970 00:00:00 +0000
+  summary:     base
+  
+  
+
 errors
 
   $ cat errors.log