From 27e46c36acb6a8465af4c20812c8a8ed7c61d5ba Mon Sep 17 00:00:00 2001
From: Siddharth Ravikumar <sravik@bgsu.edu>
Date: Tue, 27 Jan 2015 22:01:14 -0500
Subject: combox/events.py - Wrote first version of housingkeep() method for
 ComboxDirMonitor class.

The test for this method at tests/events_test.py only tests a part of
it.
---
 combox/events.py     | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 tests/events_test.py | 24 +++++++++++++++++++++++-
 2 files changed, 75 insertions(+), 1 deletion(-)

diff --git a/combox/events.py b/combox/events.py
index 00fba84..f4bbcc0 100644
--- a/combox/events.py
+++ b/combox/events.py
@@ -46,6 +46,58 @@ class ComboxDirMonitor(FileSystemEventHandler):
                             datefmt='%Y-%m-%d %H:%M:%S')
 
 
+    def housekeep(self):
+        """Recursively traverses combox directory, discovers changes and updates silo and node directories.
+
+        Information about files that have been removed from combox
+        directory is purged from the silo. Also the corresponding
+        shards are removed from the node directories.
+
+        The untracked files are encrypted and split between the node
+        directories and information about these files are stashed in
+        the silo.
+
+        Information about modified files in the combox directory are
+        updated and the file's shards are updated.
+
+        """
+        print "combox is housekeeping."
+        print "Please don't make any changes to combox directory now."
+        print "Thanks for your patience."
+
+        # Remove information about files that were deleted.
+        for fpath in self.silo.keys():
+            if not path.exists(fpath):
+                # remove this file's info from silo.
+                print fpath, "was deleted. Removing it from DB."
+                self.silo.remove(fpath)
+                # also purge the file's shards in node directories.
+                rm_shards(fpath, self.config)
+
+        # Add/update information about files that were created/modded.
+        # Also do split_and_encrypt on files that were created/modded.
+        for root, dirs, files in os.walk(self.config['combox_dir']):
+
+            for f in files:
+                fpath = path.join(root, f)
+
+                if (self.silo.exists(fpath) and
+                    self.silo.stale(fpath)):
+                    # file was modified
+                    print fpath, "was modified. Updating DB and shards..."
+                    split_and_encrypt(fpath, self.config)
+                    self.silo.update(fpath)
+                elif not self.silo.exists(fpath):
+                    # new file
+                    print 'Adding new file', fpath, '...'
+                    split_and_encrypt(fpath, self.config)
+                    self.silo.update(fpath)
+
+
+        print "combox is done with the drudgery."
+        print "Do what you want to the combox directory."
+
+
     def on_moved(self, event):
         super(ComboxDirMonitor, self).on_moved(event)
 
diff --git a/tests/events_test.py b/tests/events_test.py
index f9579b0..5c726d9 100644
--- a/tests/events_test.py
+++ b/tests/events_test.py
@@ -32,7 +32,9 @@ from combox.config import get_nodedirs
 from combox.crypto import decrypt_and_glue
 from combox.events import ComboxDirMonitor
 from combox.file import (relative_path, purge_dir,
-                         read_file, write_file)
+                         read_file, write_file,
+                         rm_shards)
+
 from combox.silo import ComboxSilo
 
 
@@ -238,3 +240,23 @@ def test_CDM():
 
     observer.stop()
     observer.join()
+
+
+def test_housekeep():
+    """ComboxDirMonitor's housekeep method test."""
+
+    lorem = path.join(FILES_DIR, 'lorem.txt')
+    lorem_moved = path.join(FILES_DIR, 'lorem.moved.txt')
+    os.rename(lorem, lorem_moved)
+
+    cdm = ComboxDirMonitor(config)
+    cdm.housekeep()
+
+    silo = ComboxSilo(config)
+    assert not silo.exists(lorem)
+    assert silo.exists(lorem_moved)
+    shardedp(lorem_moved)
+
+    os.rename(lorem_moved, lorem)
+    rm_shards(lorem_moved, config)
+    silo.remove(lorem_moved)
-- 
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