Kafka metrics java port. No reporters or instrumentation.

There is no straight translation for the JMX reporter into python,
so I'll do something else in a separate commit.

1 files changed, 15 insertions, 0 deletions

diff --git a/kafka/metrics/stats/count.py b/kafka/metrics/stats/count.py
new file mode 100644
index 0000000..183e4f2
--- /dev/null
+++ b/kafka/metrics/stats/count.py
@@ -0,0 +1,15 @@
+from kafka.metrics.stats.sampled_stat import AbstractSampledStat
+
+
+class Count(AbstractSampledStat):
+    """
+    An AbstractSampledStat that maintains a simple count of what it has seen.
+    """
+    def __init__(self):
+        super(Count, self).__init__(0.0)
+
+    def update(self, sample, config, value, now):
+        sample.value += 1.0
+
+    def combine(self, samples, config, now):
+        return float(sum(sample.value for sample in samples))