Merge lp:~achiang/laika/cache-wrapper-proxy into lp:laika

[Alex Chiang]

Cache wrapper for launchpadlib objects, 200% performance gain

Cleverly cache launchpadlib objects to improve our performance
by up to 200%.

Thanks James Ferguson.

=== modified file 'laika'
--- laika	2010-11-16 16:37:02 +0000
+++ laika	2010-11-24 00:06:20 +0000
@@ -22,6 +22,23 @@
 
 UTCNOW = datetime.datetime.utcnow()
 
+class LPWrap:
+    '''Simple wrapper Cache-Proxy for LP objects'''
+    def __init__(self, lpObj):
+        self.lpObj = lpObj
+
+    def __getattr__(self, attr):
+        result = getattr(self.lpObj, attr)
+        # Tricky. We look at the attr, and if it is another launchpadlib
+        # object, then we wrap *it* too. e.g., you asked for task.bug, where
+        # bug is a launchpadlib object contained within the task lplib object.
+        # Eventually, we'll just get a normal attribute that isn't an lplib
+        # object, which we cache with setattr and then later retrieve with
+        # the above getattr.
+        if result.__class__.__name__ == "Entry":
+            result = LPWrap(result)
+        setattr(self, attr, result)
+        return result
 
 class Report(object):
     '''An activity report for a specified Launchpad user.
@@ -98,6 +115,7 @@
         tasks = self.user.searchTasks(assignee=self.user,
                                       status=self.status,
                                       modified_since=self.since)
+        tasks = [LPWrap(t) for t in tasks]
         self.print_header("Assigned Bugs")
 
         for t in tasks:
@@ -124,6 +142,7 @@
         tasks = self.user.searchTasks(bug_commenter=self.user,
                                       status=self.status,
                                       modified_since=self.since)
+        tasks = [LPWrap(t) for t in tasks]
         self.print_header("Commented Bugs")
         for t in tasks:
             if self.bugs.has_key(t.bug.id):
@@ -141,6 +160,7 @@
         tasks = self.user.searchTasks(bug_reporter=self.user,
                                       status=self.status,
                                       modified_since=self.since)
+        tasks = [LPWrap(t) for t in tasks]
         self.print_header("Reported Bugs")
         for t in tasks:
             if self.bugs.has_key(t.bug.id):