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<title>[12664] CalendarServer/trunk/calendarserver/webadmin/logs.py</title>
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<dt>Revision</dt> <dd><a href="http://trac.calendarserver.org//changeset/12664">12664</a></dd>
<dt>Author</dt> <dd>wsanchez@apple.com</dd>
<dt>Date</dt> <dd>2014-02-11 18:06:50 -0800 (Tue, 11 Feb 2014)</dd>
</dl>
<h3>Log Message</h3>
<pre>Try to be event-based. Fail.</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#CalendarServertrunkcalendarserverwebadminlogspy">CalendarServer/trunk/calendarserver/webadmin/logs.py</a></li>
</ul>
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<div id="patch">
<h3>Diff</h3>
<a id="CalendarServertrunkcalendarserverwebadminlogspy"></a>
<div class="modfile"><h4>Modified: CalendarServer/trunk/calendarserver/webadmin/logs.py (12663 => 12664)</h4>
<pre class="diff"><span>
<span class="info">--- CalendarServer/trunk/calendarserver/webadmin/logs.py 2014-02-12 00:30:58 UTC (rev 12663)
+++ CalendarServer/trunk/calendarserver/webadmin/logs.py 2014-02-12 02:06:50 UTC (rev 12664)
</span><span class="lines">@@ -31,8 +31,7 @@
</span><span class="cx"> from zope.interface import implementer
</span><span class="cx">
</span><span class="cx"> from twisted.python.log import FileLogObserver
</span><del>-from twisted.internet.defer import succeed
-from twisted.internet.task import deferLater
</del><ins>+from twisted.internet.defer import Deferred, succeed
</ins><span class="cx">
</span><span class="cx"> from txweb2.stream import IByteStream, fallbackSplit
</span><span class="cx"> from txweb2.resource import Resource
</span><span class="lines">@@ -92,20 +91,20 @@
</span><span class="cx"> def __init__(self):
</span><span class="cx"> Resource.__init__(self)
</span><span class="cx">
</span><ins>+ events = deque(maxlen=400)
</ins><span class="cx">
</span><del>- @property
- def events(self):
- if not hasattr(self, "_buffer"):
- buffer = deque(maxlen=400)
</del><ins>+ observers = (
+ AccessLogObserver(events),
+ BufferingLogObserver(events),
+ )
</ins><span class="cx">
</span><del>- AccessLogObserver(buffer).start()
- BufferingLogObserver(buffer).start()
</del><ins>+ for observer in observers:
+ observer.start()
</ins><span class="cx">
</span><del>- self._buffer = buffer
</del><ins>+ self.events = events
+ self.observers = observers
</ins><span class="cx">
</span><del>- return self._buffer
</del><span class="cx">
</span><del>-
</del><span class="cx"> def render(self, request):
</span><span class="cx"> start = request.headers.getRawHeaders("last-event-id")
</span><span class="cx">
</span><span class="lines">@@ -116,7 +115,7 @@
</span><span class="cx"> start = None
</span><span class="cx">
</span><span class="cx"> response = Response()
</span><del>- response.stream = LogEventStream(self, start)
</del><ins>+ response.stream = LogEventStream(self, start=start)
</ins><span class="cx"> response.headers.setHeader(
</span><span class="cx"> "content-type", MimeType.fromString("text/event-stream")
</span><span class="cx"> )
</span><span class="lines">@@ -190,9 +189,20 @@
</span><span class="cx"> textAsEvent(marker, eventID=0, eventClass=u"server")
</span><span class="cx"> )
</span><span class="cx">
</span><del>- return deferLater(self._reactor, 1, self.read, _retrying=True)
</del><ins>+ return succeed(None)
</ins><span class="cx">
</span><ins>+ # def readAgain(_):
+ # return self.read()
</ins><span class="cx">
</span><ins>+ # d = Deferred()
+ # d.addCallback(readAgain)
+
+ # for observer in self._source.observers:
+ # observer.registerDeferred(d)
+
+ # return d
+
+
</ins><span class="cx"> def split(self, point):
</span><span class="cx"> return fallbackSplit(self, point)
</span><span class="cx">
</span><span class="lines">@@ -214,6 +224,8 @@
</span><span class="cx">
</span><span class="cx">
</span><span class="cx"> def __init__(self, buffer):
</span><ins>+ self._junk = file("/tmp/junk", "a")
+
</ins><span class="cx"> class FooIO(object):
</span><span class="cx"> def write(_, s):
</span><span class="cx"> self._lastMessage = s
</span><span class="lines">@@ -225,19 +237,37 @@
</span><span class="cx">
</span><span class="cx"> self.lastMessage = None
</span><span class="cx"> self._buffer = buffer
</span><ins>+ self._waiting = []
</ins><span class="cx">
</span><span class="cx">
</span><span class="cx"> def emit(self, event):
</span><span class="cx"> self._buffer.append((self, u"server", event))
</span><span class="cx">
</span><ins>+ self._junk.write("emit: {0!r} on {1}\n".format(self._waiting, self))
+ self._junk.flush()
</ins><span class="cx">
</span><ins>+ while self._waiting:
+ d = self._waiting.pop(0)
+ self._junk.write("calling: {0}\n".format(d))
+ self._junk.flush()
+ d.callback(None)
+ self._junk.write("called: {0}\n".format(d))
+ self._junk.flush()
+
+
</ins><span class="cx"> def formatEvent(self, event):
</span><span class="cx"> self._lastMessage = None
</span><span class="cx"> FileLogObserver.emit(self, event)
</span><span class="cx"> return self._lastMessage
</span><span class="cx">
</span><span class="cx">
</span><ins>+ def registerDeferred(self, d):
+ self._waiting.append(d)
+ self._junk.write("Registered: {0} on {1}\n".format(self._waiting, self))
+ self._junk.flush()
</ins><span class="cx">
</span><ins>+
+
</ins><span class="cx"> class AccessLogObserver(CommonAccessLoggingObserverExtensions):
</span><span class="cx"> """
</span><span class="cx"> Log observer that captures apache-style access log text entries in a
</span><span class="lines">@@ -261,7 +291,11 @@
</span><span class="cx"> self._buffer.append((self, u"access", event))
</span><span class="cx">
</span><span class="cx">
</span><ins>+ def registerDeferred(self, d):
+ pass
</ins><span class="cx">
</span><ins>+
+
</ins><span class="cx"> def textAsEvent(text, eventID=None, eventClass=None):
</span><span class="cx"> event = []
</span><span class="cx">
</span></span></pre>
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