send metrics in chunks of 100

src/client.py

 #!/usr/bin/python
 
 from datetime import datetime
+from itertools import islice
 from socket import gethostname
 import argparse
 import logging
@@ -95,13 +96,14 @@ class Client:
         metric name given in the message body. (This option must be enabled
         on the server. Otherwise it can't parse the data sent.)
         """
+        body = "\n".join(message)
         try:
             self.channel.basic_publish(exchange=self.amqp_queue,
-                                       routing_key='', body="\n".join(message))
-            return True
+                                       routing_key='', body=body)
         except:
-            logger.error('An error has occured while sending metrics.')
-            return False
+            logger.error('An error has occured while sending metrics (%dB).',
+                         len(body))
+            raise
 
     def collect_node(self, metricCollectors):
         """
@@ -198,6 +200,13 @@ class Client:
         freqs = set([i[1] for i in items if i[1]>0])
         return reduce(operator.mul, freqs, 1)
 
+    @staticmethod
+    def _chunker(seq, size):
+        """Yield seq in size-long chunks.
+        """
+        for pos in xrange(0, len(seq), size):
+            yield islice(seq, pos, pos + size)
+
     def run(self, metricCollectors=[]):
         """
         Call this method to start reporting to the server, it needs the
@@ -215,9 +224,9 @@ class Client:
                     if self.debugMode == "True":
                         for i in metrics:
                             logger.debug('Metric to send: %s', i)
+                    for chunk in self._chunker(metrics, 100):
+                        self.send(chunk)
                     logger.info("%d metrics sent", len(metrics))
-                    if not self.send(metrics):
-                        raise RuntimeError
                 time.sleep(1)
                 self.beat += 1
                 if self.beat % maxFrequency == 0: