infinitepush: cleanup temp files

Summary: Infinitepush didn't clean up temp files during pulls.

Test Plan:
Choose any hg server that's not in vip (for example, hg014.lla2).
Run `hg pull ssh://hg014.lla2.facebook.com//data/scm/fbsource -r INFINITEPUSH_COMMIT_HASH`
Check that new /tmp/tmp* file has appeared.
Install fixed infinitepush extension on the server.
Run the same command again, make sure it works fine.

Note: no new unittests, because temp filenames are random and that's difficult to test.

Reviewers: #mercurial, dschatzberg, tja

Reviewed By: tja

Subscribers: mjpieters

Differential Revision: https://phabricator.intern.facebook.com/D5077767

Tasks: 17599765

Signature: t1:5077767:1495025042:d209d1e5342442ac8b05a4c80748780bbf36846c

infinitepush/__init__.py

@@ -473,7 +473,7 @@ def getbundlechunks(orig, repo, source, heads=None, bundlecaps=None, **kwargs):
     newheads = []
     scratchheads = []
     nodestobundle = {}
-    allbundlerepos = []
+    allbundlestocleanup = []
     try:
         for head in heads:
             if head not in repo.changelog.nodemap:
@@ -482,7 +482,7 @@ def getbundlechunks(orig, repo, source, heads=None, bundlecaps=None, **kwargs):
                     bundlepath = "bundle:%s+%s" % (repo.root, newbundlefile)
                     bundlerepo = repository(repo.ui, bundlepath)
 
-                    allbundlerepos.append(bundlerepo)
+                    allbundlestocleanup.append((bundlerepo, newbundlefile))
                     bundlerevs = set(_readbundlerevs(bundlerepo))
                     bundlecaps = _includefilelogstobundle(
                         bundlecaps, bundlerepo, bundlerevs, repo.ui)
@@ -499,8 +499,14 @@ def getbundlechunks(orig, repo, source, heads=None, bundlecaps=None, **kwargs):
                 newheads.extend(bundleroots)
                 scratchheads.append(head)
     finally:
-        for bundlerepo in allbundlerepos:
+        for bundlerepo, bundlefile in allbundlestocleanup:
             bundlerepo.close()
+            try:
+                os.unlink(bundlefile)
+            except (IOError, OSError):
+                # if we can't cleanup the file then just ignore the error,
+                # no need to fail
+                pass
 
     pullfrombundlestore = bool(scratchbundles)
     wrappedchangegrouppart = False