sync: Add support to dump a JSON event log of all sync events.

Change-Id: Id4852968ac1b2bf0093007cf2e5ca951ddab8b3b

project.py

@@ -323,13 +323,15 @@ class RemoteSpec(object):
                pushUrl=None,
                review=None,
                revision=None,
-               orig_name=None):
+               orig_name=None,
+               fetchUrl=None):
     self.name = name
     self.url = url
     self.pushUrl = pushUrl
     self.review = review
     self.revision = revision
     self.orig_name = orig_name
+    self.fetchUrl = fetchUrl
 
 
 class RepoHook(object):
@@ -2876,13 +2878,14 @@ class SyncBuffer(object):
 
     self.detach_head = detach_head
     self.clean = True
+    self.recent_clean = True
 
   def info(self, project, fmt, *args):
     self._messages.append(_InfoMessage(project, fmt % args))
 
   def fail(self, project, err=None):
     self._failures.append(_Failure(project, err))
-    self.clean = False
+    self._MarkUnclean()
 
   def later1(self, project, what):
     self._later_queue1.append(_Later(project, what))
@@ -2896,6 +2899,15 @@ class SyncBuffer(object):
     self._PrintMessages()
     return self.clean
 
+  def Recently(self):
+    recent_clean = self.recent_clean
+    self.recent_clean = True
+    return recent_clean
+
+  def _MarkUnclean(self):
+    self.clean = False
+    self.recent_clean = False
+
   def _RunLater(self):
     for q in ['_later_queue1', '_later_queue2']:
       if not self._RunQueue(q):
@@ -2904,7 +2916,7 @@ class SyncBuffer(object):
   def _RunQueue(self, queue):
     for m in getattr(self, queue):
       if not m.Run(self):
-        self.clean = False
+        self._MarkUnclean()
         return False
     setattr(self, queue, [])
     return True