Log events to a file named after today's date

We need this so that we can safely expunge old events without interfering with
the running server.  See #414.

(imported from commit 4739e59e36ea69f877c158c13ee752bf6a2dacfe)

.gitignore

@@ -2,5 +2,6 @@
 *~
 /zephyrdb
 /all_messages_log.*
+/event_log/*
 /server.log
 *.sw[po]

humbug/settings.py

@@ -263,7 +263,7 @@ DEFAULT_FROM_EMAIL = "Humbug <humbug@humbughq.com>"
 
 LOGIN_REDIRECT_URL='/'
 
-MESSAGE_LOG="all_messages_log." + platform.node()
+EVENT_LOG_DIR = 'event_log'
 
 # Polling timeout for get_updates, in milliseconds.
 # We configure this here so that the client test suite can override it.

humbug/test_settings.py

@@ -19,7 +19,7 @@ POLL_TIMEOUT = 1000
 ENABLE_NOTIFICATIONS = False
 
 # Don't use the real message log for tests
-MESSAGE_LOG = "/tmp/test-message-log"
+EVENT_LOG_DIR = '/tmp/humbug-test-event-log'
 
 # Print our emails rather than sending them
 EMAIL_BACKEND = 'django.core.mail.backends.locmem.EmailBackend'

zephyr/lib/actions.py

@@ -21,13 +21,25 @@ import re
 import requests
 import hashlib
 import base64
+import datetime
+import os
+import platform
+from os import path
 
 # Store an event in the log for re-importing messages
 def log_event(event):
     if "timestamp" not in event:
         event["timestamp"] = time.time()
-    with lockfile(settings.MESSAGE_LOG + '.lock'):
-        with open(settings.MESSAGE_LOG, 'a') as log:
+
+    if not path.exists(settings.EVENT_LOG_DIR):
+        os.mkdir(settings.EVENT_LOG_DIR)
+
+    template = path.join(settings.EVENT_LOG_DIR,
+        '%s.' + platform.node()
+        + datetime.datetime.now().strftime('.%Y-%m-%d'))
+
+    with lockfile(template % ('lock',)):
+        with open(template % ('events',), 'a') as log:
             log.write(simplejson.dumps(event) + '\n')
 
 # create_user_hack is the same as Django's User.objects.create_user,

zephyr/management/commands/populate_db.py

@@ -20,8 +20,10 @@ from zephyr.models import MAX_MESSAGE_LENGTH
 import simplejson
 import datetime
 import random
+import glob
 import sys
 import os
+from os import path
 from optparse import make_option
 
 settings.TORNADO_SERVER = None
@@ -352,7 +354,9 @@ def restore_saved_messages():
         else:
             raise ValueError('Bad message type')
 
-    with file(settings.MESSAGE_LOG, "r") as message_log:
+    event_glob = path.join(settings.EVENT_LOG_DIR, 'events.*')
+    for filename in sorted(glob.glob(event_glob)):
+        with file(filename, "r") as message_log:
             for line in message_log.readlines():
                 process_line(line)