update timestamp into seconds when migration from es with time-reference

Change-Id: I3bb534411984f07d0abf60c37ff2393d45dca249

update timestamp into seconds when migration from es with time-reference

Change-Id: If56812bb2c5c34628ad6c74dc9d261e2812a14c9

aliyun/log/logitem.py

@@ -12,17 +12,20 @@ class LogItem(object):
     """ LogItem used to present a log, it contains log time and multiple
     key/value pairs to present the log contents.
 
-    :type timestamp: int
+    :type timestamp: int with seconds as unit
     :param timestamp: time of the log item, the default time is the now time.
 
     :type contents: tuple(key-value) list
     :param contents: the data of the log item, including many (key,value) pairs.
     """
 
     def __init__(self, timestamp=None, time_nano_part=None, contents=None):
-        nano_time = int(time.time()* 10**9)
-        self.timestamp = int(timestamp) if timestamp else int(nano_time / 1000000000)
-        self.time_nano_part= int(time_nano_part) if time_nano_part else int(nano_time%1000000000)
+        nano_time = int(time.time() * 10**9)
+        self.timestamp_seconds = int(timestamp) if timestamp else int(nano_time / 1000000000)
+        # milliseconds
+        if self.timestamp_seconds > 1e10:
+            self.timestamp_seconds = int(self.timestamp_seconds / 1000.0)
+        self.time_nano_part = int(time_nano_part) if time_nano_part else int(nano_time % 1000000000)
         self.contents = copy.deepcopy(contents) if contents else []
 
     def push_back(self, key, value):
@@ -56,7 +59,7 @@ def get_time(self):
 
         :return: int, log time
         """
-        return self.timestamp
+        return self.timestamp_seconds
 
     def get_time_nano_part(self):
         """ Get log time nano part
@@ -70,7 +73,7 @@ def set_time(self, timestamp):
         :type timestamp: int
         :param timestamp: log time
         """
-        self.timestamp = int(timestamp)
+        self.timestamp_seconds = int(timestamp)
 
     def set_time_nano_part(self, time_nano_part):
         """ Set log time nano part
@@ -80,5 +83,5 @@ def set_time_nano_part(self, time_nano_part):
         self.time_nano_part = int(time_nano_part)
 
     def log_print(self):
-        print('time', self.timestamp)
+        print('time', self.timestamp_seconds)
         print('contents', self.contents)