transformer: add acculumator transformer

This adds a transformer accumulating counters until a threshold, and then
flushing them out.

This implements a solution to blueprint swift-batched-requests

Change-Id: Ic1f36138d8ee1e5705f2285987763fbff9de0184
Signed-off-by: Julien Danjou <julien@danjou.info>

1 files changed, 1 insertions, 0 deletions

diff --git a/setup.py b/setup.py
index 254efc35..d84373b1 100755
--- a/setup.py
+++ b/setup.py
@@ -131,6 +131,7 @@ setuptools.setup(
     libvirt = ceilometer.compute.virt.libvirt.inspector:LibvirtInspector
 
     [ceilometer.transformer]
+    accumulator = ceilometer.transformer.accumulator:TransformerAccumulator
 
     [ceilometer.publisher]
     meter_publisher = ceilometer.publisher.meter_publish:MeterPublisher