Migrate queued metric from processes to threads

util/queuemetrics.py

@@ -1,7 +1,9 @@
 import logging
 import boto
 
-from multiprocessing import Process, Queue
+from Queue import Queue
+from threading import Thread
+
 
 logger = logging.getLogger(__name__)
 
@@ -35,15 +37,16 @@ class QueueingCloudWatchReporter(object):
                         unit='Percent')
 
 
-class SendToCloudWatch(Process):
+class SendToCloudWatch(Thread):
   """ SendToCloudWatch loops indefinitely and pulls metrics off of a queue then sends it to
   CloudWatch. """
   def __init__(self, request_queue, aws_access_key, aws_secret_key):
-    Process.__init__(self)
+    Thread.__init__(self)
+    self.daemon = True
+
     self._aws_access_key = aws_access_key
     self._aws_secret_key = aws_secret_key
     self._put_metrics_queue = request_queue
-    self.daemon = True
 
   def run(self):
     logger.debug('Starting CloudWatch sender process.')
@@ -54,7 +57,7 @@ class SendToCloudWatch(Process):
       try:
         connection.put_metric_data(*put_metric_args, **kwargs)
       except:
-        logger.exception('Writing to CloudWatch failed')
+        logger.exception('Failed to write to CloudWatch')
 
 
 class QueueMetrics(object):