convert_data_size('1M') == 1024 * 1024 bytes
Signed-off-by: Jiří Župka <jzupka@xxxxxxxxxx>
---
client/shared/base_utils.py | 58 ++++++++++++++++++++++++++++++++++
client/shared/base_utils_unittest.py | 41 ++++++++++++++++++++++++
2 files changed, 99 insertions(+), 0 deletions(-)
diff --git a/client/shared/base_utils.py b/client/shared/base_utils.py
index 8e38413..8c23c8e 100644
--- a/client/shared/base_utils.py
+++ b/client/shared/base_utils.py
@@ -400,6 +400,41 @@ def matrix_to_string(matrix, header=None):
return matrix_str
+class Statistic(object):
+ """
+ Class to display and collect average,
+ max and min values of a given data set.
+ """
+ def __init__(self):
+ self._sum = 0
+ self._count = 0
+ self._max = None
+ self._min = None
+
+ def get_average(self):
+ if self._count != 0:
+ return self._sum / self._count
+ else:
+ return None
+
+ def get_min(self):
+ return self._min
+
+ def get_max(self):
+ return self._max
+
+ def record(self, value):
+ """
+ Record new value to statistic.
+ """
+ self._count += 1
+ self._sum += value
+ if not self._max or self._max < value:
+ self._max = value
+ if not self._min or self._min > value:
+ self._min = value
+
+
def read_keyval(path):
"""
Read a key-value pair format file into a dictionary, and return it.
@@ -1972,6 +2007,29 @@ def display_data_size(size):
return '%.2f %s' % (size, prefixes[i])
+def convert_data_size(size, default_sufix='B'):
+ '''
+ Convert data size from human readable units to an int of arbitrary size.
+
+ @param size: Human readable data size representation (string).
+ @param default_sufix: Default sufix used to represent data.
+ @return: Int with data size in the appropriate order of magnitude.
+ '''
+ orders = {'B': 1,
+ 'K': 1024,
+ 'M': 1024 * 1024,
+ 'G': 1024 * 1024 * 1024,
+ 'T': 1024 * 1024 * 1024 * 1024,
+ }
+
+ order = re.findall("([BbKkMmGgTt])", size[-1])
+ if not order:
+ size += default_sufix
+ order = [default_sufix]
+
+ return int(float(size[0:-1]) * orders[order[0].upper()])
+
+
def interactive_download(url, output_file, title='', chunk_size=100*1024):
'''
Interactively downloads a given file url to a given output file
diff --git a/client/shared/base_utils_unittest.py b/client/shared/base_utils_unittest.py
index a78cdb6..604c441 100755
--- a/client/shared/base_utils_unittest.py
+++ b/client/shared/base_utils_unittest.py
@@ -150,6 +150,47 @@ class test_open_write_close(unittest.TestCase):
self.assertEqual(data, test_file.final_data)
+class test_Statisctic(unittest.TestCase):
+ def setUp(self):
+ self.god = mock.mock_god(ut=self)
+
+
+ def tearDown(self):
+ self.god.unstub_all()
+
+
+ def test_simple_functionality(self):
+ stat = base_utils.Statistic()
+ stat.record(5)
+ stat.record(15)
+ stat.record(10)
+ self.assertEqual(10, stat.get_average())
+ self.assertEqual(5, stat.get_min())
+ self.assertEqual(15, stat.get_max())
+
+
+class test_ConvertDataSize(unittest.TestCase):
+ def setUp(self):
+ self.god = mock.mock_god(ut=self)
+
+
+ def tearDown(self):
+ self.god.unstub_all()
+
+
+ def test_simple_functionality(self):
+ size = 12
+ self.assertEqual(size, base_utils.convert_data_size('12'))
+ size *= 1024
+ self.assertEqual(size, base_utils.convert_data_size('12K'))
+ size *= 1024
+ self.assertEqual(size, base_utils.convert_data_size('12m'))
+ size *= 1024
+ self.assertEqual(size, base_utils.convert_data_size('12G'))
+ size *= 1024
+ self.assertEqual(size, base_utils.convert_data_size('12T'))
+
+
class test_read_keyval(unittest.TestCase):
def setUp(self):
self.god = mock.mock_god(ut=self)
--
1.7.7.6
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