Add and test nanosecond precision option.

Author: luhn

fluent/sender.py

@@ -48,6 +48,7 @@ def __init__(self,
                  timeout=3.0,
                  verbose=False,
                  buffer_overflow_handler=None,
+                 nanosecond_precision=False,
                  **kwargs):
 
         self.tag = tag
@@ -57,6 +58,7 @@ def __init__(self,
         self.timeout = timeout
         self.verbose = verbose
         self.buffer_overflow_handler = buffer_overflow_handler
+        self.nanosecond_precision = nanosecond_precision
 
         self.socket = None
         self.pendings = None
@@ -70,7 +72,10 @@ def __init__(self,
             self._close()
 
     def emit(self, label, data):
-        cur_time = int(time.time())
+        if self.nanosecond_precision:
+            cur_time = EventTime(time.time())
+        else:
+            cur_time = int(time.time())
         return self.emit_with_time(label, cur_time, data)
 
     def emit_with_time(self, label, timestamp, data):

tests/test_sender.py

@@ -3,6 +3,7 @@
 from __future__ import print_function
 import unittest
 import socket
+import msgpack
 
 import fluent.sender
 from tests import mockserver
@@ -64,6 +65,20 @@ def test_simple(self):
         self.assertTrue(data[0][1])
         self.assertTrue(isinstance(data[0][1], int))
 
+    def test_nanosecond(self):
+        sender = self._sender
+        sender.nanosecond_precision = True
+        sender.emit('foo', {'bar': 'baz'})
+        sender._close()
+        data = self.get_data()
+        eq = self.assertEqual
+        eq(1, len(data))
+        eq(3, len(data[0]))
+        eq('test.foo', data[0][0])
+        eq({'bar': 'baz'}, data[0][2])
+        self.assertTrue(isinstance(data[0][1], msgpack.ExtType))
+        eq(data[0][1].code, 0)
+
     def test_no_last_error_on_successful_emit(self):
         sender = self._sender
         sender.emit('foo', {'bar': 'baz'})