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test_bench.py
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from __future__ import absolute_import
import json
import pkg_resources
import random
import statistics
import string
from collections import defaultdict
from datetime import datetime
from rest_framework.test import APITestCase
from .models import Group, Permission, User
# Python 3 compatibility
try:
xrange
except NameError:
xrange = range
DREST_VERSION = pkg_resources.require('dynamic-rest')[0].version
DRF_VERSION = pkg_resources.require('djangorestframework')[0].version
AVERAGE_TYPE = 'median'
# BENCHMARKS: configuration for benchmarks
BENCHMARKS = [
{
# name: benchmark name
'name': 'linear',
# drest: DREST endpoint
'drest': '/drest/users/',
# drf: DRF endpoint
'drf': '/drf/users/',
# min_size: minimum sample size
'min_size': 1,
# max_size: maximum sample size
'max_size': 16,
# multiplier: number of records in one sample
'multiplier': 256,
# samples: number of samples to take
'samples': 12
},
{
'name': 'quadratic',
'drest': '/drest/users?include[]=groups.',
'drf': '/drf/users_with_groups/',
'min_size': 1,
'max_size': 16,
'multiplier': 4,
'samples': 12
},
{
'name': 'cubic',
'drest': (
'/drest/users/'
'?include[]=groups.permissions.'
),
'drf': '/drf/users_with_all/',
'min_size': 1,
'max_size': 16,
'multiplier': 1,
'samples': 12
}
]
CHART_HEAD = """
<head>
<script src="https://code.jquery.com/jquery-1.12.0.min.js"></script>
<script src="https://code.highcharts.com/highcharts.js"></script>
</head>
"""
CHART_TEMPLATE = """
<script>
$(function () {{
var {benchmark_name}_chart = new Highcharts.Chart({{
chart: {{
renderTo: '{benchmark_name}',
type: 'line',
}},
title: {{
text: '{benchmark_name}',
x: -20 //center
}},
xAxis: {{
title: {{
text: '# of records'
}}
}},
yAxis: {{
title: {{
text: 'Response time (seconds)'
}},
plotLines: [{{
value: 0,
width: 1,
color: '#808080'
}}]
}},
legend: {{
layout: 'vertical',
align: 'right',
verticalAlign: 'middle',
borderWidth: 0
}},
series: {data}
}});
}});
</script>
<div id="{benchmark_name}" style="width:100%"></div>
<br/>
"""
def get_average(values):
if len(values) == 0:
return 0
elif AVERAGE_TYPE == 'mean':
return statistics.mean(values)
elif AVERAGE_TYPE == 'median':
return statistics.median(values)
class BenchmarkTest(APITestCase):
@classmethod
def setUpClass(cls):
# initialize results: a 4x nested dictionary
cls._results = defaultdict(
lambda: defaultdict(
lambda: defaultdict(
dict
)
)
)
@classmethod
def tearDownClass(cls):
# save results to an HTML file
with open('benchmarks.html', 'w') as file:
file.write(CHART_HEAD)
for benchmark_name, implementations in sorted(
cls._results.items()
):
data = []
for implementation_name, implementation_data in sorted(
implementations.items()
):
for key in implementation_data.keys():
values = sorted(implementation_data[key].values())
implementation_data[key] = get_average(values)
implementation_data = sorted(implementation_data.items())
data.append({
'name': implementation_name,
'data': implementation_data
})
file.write(
CHART_TEMPLATE.format(
benchmark_name=benchmark_name,
data=json.dumps(data)
)
)
def bench(
self,
implementation_name,
benchmark_name,
url,
size,
sample
):
start = datetime.now()
response = self.client.get(url)
end = datetime.now()
self.assertEqual(response.status_code, 200)
diff = end - start
d = diff.total_seconds()
self._results[benchmark_name][implementation_name][size][sample] = d
def generate_linear(self, size):
total = 0
for i in xrange(size):
total += 1
User.objects.create(
name=str(i)
)
return total
def generate_quadratic(self, size):
total = 0
for i in xrange(size):
total += 1
user = User.objects.create(
name=str(i)
)
for j in xrange(size):
total += 1
group = Group.objects.create(
name='%d-%d' % (i, j),
max_size=size
)
user.groups.add(group)
return total
def generate_cubic(self, size):
total = 0
for i in xrange(size):
total += 1
user = User.objects.create(
name=str(i)
)
for j in xrange(size):
total += 1
group = Group.objects.create(
name='%d-%d' % (i, j),
max_size=size
)
user.groups.add(group)
for k in xrange(size):
total += 1
permission = Permission.objects.create(
name='%d-%d-%d' % (i, j, k)
)
group.permissions.add(permission)
return total
def generate_benchmark(name, title, drest, drf, size, sample):
def bench(self):
total_size = getattr(self, 'generate_%s' % name)(size)
self.bench(
'DREST %s' % DREST_VERSION,
title,
drest,
total_size,
sample
)
self.bench('DRF %s' % DRF_VERSION, title, drf, total_size, sample)
return bench
def get_random_string(size):
return ''.join(
random.choice(string.ascii_uppercase)
for _ in xrange(size)
)
# generate test methods
for benchmark in BENCHMARKS:
name = benchmark['name']
title = name.title()
min_size = benchmark['min_size']
max_size = benchmark['max_size']
drf = benchmark['drf']
drest = benchmark['drest']
multiplier = benchmark['multiplier']
samples = benchmark['samples']
for size in range(min_size, max_size + 1):
size *= multiplier
for sample in xrange(samples):
test_name = 'test_%s_%s_%d_%d' % (
get_random_string(4), name, size, sample
)
test = generate_benchmark(name, title, drest, drf, size, sample)
setattr(BenchmarkTest, test_name, test)