summaryrefslogtreecommitdiff
path: root/python-django-speedinfo.spec
blob: a12c754a6b720068451ca8acc3b7b18ad23904e1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
%global _empty_manifest_terminate_build 0
Name:		python-django-speedinfo
Version:	2.0.2
Release:	1
Summary:	Live profiling tool for Django framework to measure views performance
License:	MIT
URL:		https://github.com/catcombo/django-speedinfo
Source0:	https://mirrors.aliyun.com/pypi/web/packages/1c/87/a5bedf4b344a704f3fb71ad808aac1c2e091eb6f1ebce345a9cc0a36cbf5/django-speedinfo-2.0.2.tar.gz
BuildArch:	noarch


%description
# django-speedinfo

[![Build Status](https://travis-ci.org/catcombo/django-speedinfo.svg?branch=master)](https://travis-ci.org/catcombo/django-speedinfo)
[![Coverage Status](https://coveralls.io/repos/github/catcombo/django-speedinfo/badge.svg?branch=master)](https://coveralls.io/github/catcombo/django-speedinfo?branch=master)

`django-speedinfo` is a live profiling tool for Django projects to find
the most high loaded views for the next optimization. `django-speedinfo` counts
number of calls, cache hits, SQL queries, measures average and total call time
and more for each of your views. Detailed report and profiler controls are
available in Django admin.

![Speedinfo admin screenshot](https://github.com/catcombo/django-speedinfo/raw/master/screenshots/main.png)


# Prerequisites

- Python 2.7, 3.6+
- Django 1.8+


# Installation

```
pip install django-speedinfo
```

# Upgrading from 1.x

Old profiling data will be unavailable after upgrading. Don't forget to export the data in advance.

- Setup one of the storage backends as shown in the section 4 of [Setup](#setup) below.
- `SPEEDINFO_PROFILING_CONDITIONS` is empty by default. If you use `SPEEDINFO_EXCLUDE_URLS` in your
  project you need to initialize the list of conditions explicitly:
  `SPEEDINFO_PROFILING_CONDITIONS = ["speedinfo.conditions.exclude_urls.ExcludeURLCondition"]`
- `SPEEDINFO_REPORT_COLUMNS` and `SPEEDINFO_REPORT_COLUMNS_FORMAT` were removed, use `SPEEDINFO_ADMIN_COLUMNS` instead.
  Every entry in `SPEEDINFO_ADMIN_COLUMNS` list is a tuple (column name, value format, attribute name).
  See [Customize admin columns](#customize-admin-columns) for details. To add extra columns
  follow the instruction in the section [Extra admin columns](#extra-admin-columns) below.
- `speedinfo.settings` module renamed to `speedinfo.conf`
- Base condition class was renamed from `Condition` to `AbstractCondition`


# Setup

1. Add `speedinfo` to `INSTALLED_APPS`.
2. Add `speedinfo.middleware.ProfilerMiddleware` to the end of `MIDDLEWARE` (or `MIDDLEWARE_CLASSES` for Django < 1.10) 
list, but before `django.middleware.cache.FetchFromCacheMiddleware` (if used):
    ```
    MIDDLEWARE = [
        ...,
        "speedinfo.middleware.ProfilerMiddleware",
        "django.middleware.cache.FetchFromCacheMiddleware",
    ]
    ```
3. Setup any cache backend (except local-memory and dummy caching) using our proxy cache backend.
`django-speedinfo` needs the cache to store profiler state between requests and to intercept calls to cache:
    ```
    CACHES = {
        "default": {
            "BACKEND": "speedinfo.backends.proxy_cache",
            "CACHE_BACKEND": "django.core.cache.backends.filebased.FileBasedCache",
            "LOCATION": "/var/tmp/django_cache",
        }
    }
    ```
4. Setup storage for profiling data. `django-speedinfo` comes with two storages to choose from:
    - **Database storage**
        1. Add `speedinfo.storage.database` to `INSTALLED_APPS`.
        2. Add `SPEEDINFO_STORAGE = "speedinfo.storage.database.storage.DatabaseStorage"` to project settings.
        3. Run `python manage.py migrate`.
    - **Cache storage**
        1. Add `SPEEDINFO_STORAGE = "speedinfo.storage.cache.storage.CacheStorage"` to project settings.
        2. Optionally you may define a separate cache in `CACHES` to store profiling data.
           To use it in `CacheStorage` assign `SPEEDINFO_CACHE_STORAGE_CACHE_ALIAS` to the appropriate cache alias.
           Example:
            ```
            CACHES = {
                "default": {
                    "BACKEND": "speedinfo.backends.proxy_cache",
                    "CACHE_BACKEND": "django.core.cache.backends.db.DatabaseCache",
                    "LOCATION": "cache_table",
                },
                "speedinfo-storage": {
                    "BACKEND": "django.core.cache.backends.memcached.MemcachedCache",
                    "LOCATION": "127.0.0.1:11211",
                },
            })
            
            SPEEDINFO_CACHE_STORAGE_CACHE_ALIAS = "speedinfo-storage"
            ```
5. Run `python manage.py collectstatic`.


# Usage

Open `Views profiler` in Django admin. Click the `Turn on` / `Turn off` button
to control profiler state. Press `Reset` button to delete all profiling data.


# Advanced features

## Custom page caching

`django-speedinfo` automatically detects when Django use per-site caching via
`UpdateCacheMiddleware` and `FetchFromCacheMiddleware` middlewares
or per-view caching via `cache_page` decorator and counts cache hit
when retrieving pages from the cache.

If you implement your own caching logic and want to mark the view response
as obtained from the cache, add specified attribute to the `HttpResponse` object
as shown below:
```
from django.views import View
from from speedinfo.conf import speedinfo_settings

class CachedView(View):
    def get(self, request, *args, **kwargs):
        # ...
        # Assume that `response` was taken from the cache
        setattr(response, speedinfo_settings.SPEEDINFO_CACHED_RESPONSE_ATTR_NAME, True)
        return response
```
The default value of `SPEEDINFO_CACHED_RESPONSE_ATTR_NAME` is `_is_cached`.
But you can override it if the attribute name is conflicts with your application logic.

## Customize admin columns

`SPEEDINFO_ADMIN_COLUMNS` allows to control visibility and appearance of Django admin
profiler columns. Every entry in the `SPEEDINFO_ADMIN_COLUMNS` list is a tuple of
(column name, value format, `ViewProfiler` attribute name). Default value:
```
SPEEDINFO_ADMIN_COLUMNS = (
    ("View name", "{}", "view_name"),
    ("HTTP method", "{}", "method"),
    ("Anonymous calls", "{:.1f}%", "anon_calls_ratio"),
    ("Cache hits", "{:.1f}%", "cache_hits_ratio"),
    ("SQL queries per call", "{}", "sql_count_per_call"),
    ("SQL time", "{:.1f}%", "sql_time_ratio"),
    ("Total calls", "{}", "total_calls"),
    ("Time per call", "{:.8f}", "time_per_call"),
    ("Total time", "{:.4f}", "total_time"),
)
```

## Extra admin columns

To add additional data to a storage and columns to admin follow the instruction:

1. Create [custom storage backend](#custom-storage-backend) which will hold or calculate
   additional fields.
2. Implement storage `fetch_all()` method that will return the list of the `ViewProfiler`
   instances initialized with the extra fields. Example:
   ```
   def fetch_all(self, ordering=None):
       ...
       return [
           ViewProfiler(view_name="...", method="...", ..., extra_field="...")
           ...
       ]
   ```
3. Implement sorting by extra fields in `fetch_all()` method.
4. Add extra fields to `SPEEDINFO_ADMIN_COLUMNS` as described in the section
   [Customize admin columns](#customize-admin-columns).

## Profiling conditions

`SPEEDINFO_PROFILING_CONDITIONS` allows to declare a list of condition classes
to filter profiling views by some rules. By default `SPEEDINFO_PROFILING_CONDITIONS` is empty.
`django-speedinfo` comes with one build-in condition - `ExcludeURLCondition`. It allows to
exclude some urls from profiling by adding them to the `SPEEDINFO_EXCLUDE_URLS` list.
Each entry in `SPEEDINFO_EXCLUDE_URLS` is a regex compatible expression to test requested url.
Usage example:
```
SPEEDINFO_PROFILING_CONDITIONS = [
    "speedinfo.conditions.exclude_urls.ExcludeURLCondition",
]

SPEEDINFO_EXCLUDE_URLS = [
    r"/admin/",
    r"/news/$",
    r"/movie/\d+/$",
]
```

To define your own condition class, you must inherit from the base class `speedinfo.conditions.base.AbstractCondition`
and implement all abstract methods. See `ExcludeURLCondition` source code for implementation example. Then add
full path to your class to `SPEEDINFO_PROFILING_CONDITIONS` list as shown above. Conditions in mentioned list
are executed in a top-down order. The first condition returning `False` interrupts the further check.

## Custom storage backend

`django-speedinfo` comes with `DatabaseStorage` and `CacheStorage`. But you may want to write your
own storage (e.g. for MongoDB, Redis or even file-based). First create the storage class based on
`speedinfo.storage.base.AbstractStorage` and implement all abstract methods. See `speedinfo.storage.cache.storage`
and `speedinfo.storage.database.storage` as an examples. Then add path to your custom storage class
to the project settings `SPEEDINFO_STORAGE = "path.to.module.CustomStorage"`. Use our tests
to make sure that everything works as intended (you need to clone repository to get access to the `tests` package):
```
from django.test import TestCase, override_settings
from tests.test_storage import StorageTestCase

@override_settings(
    SPEEDINFO_STORAGE="path.to.module.CustomStorage",
    SPEEDINFO_TESTS=True,
)
class CustomStorageTestCase(StorageTestCase, TestCase):
    pass
```


# Notice

The number of SQL queries measured by `django-speedinfo` may differ from the values
of `django-debug-toolbar` for the same view. It happens because `django-speedinfo`
shows the average number of SQL queries for each view. Also profiler doesn't take
into account SQL queries made in the preceding middlewares.


%package -n python3-django-speedinfo
Summary:	Live profiling tool for Django framework to measure views performance
Provides:	python-django-speedinfo
BuildRequires:	python3-devel
BuildRequires:	python3-setuptools
BuildRequires:	python3-pip
%description -n python3-django-speedinfo
# django-speedinfo

[![Build Status](https://travis-ci.org/catcombo/django-speedinfo.svg?branch=master)](https://travis-ci.org/catcombo/django-speedinfo)
[![Coverage Status](https://coveralls.io/repos/github/catcombo/django-speedinfo/badge.svg?branch=master)](https://coveralls.io/github/catcombo/django-speedinfo?branch=master)

`django-speedinfo` is a live profiling tool for Django projects to find
the most high loaded views for the next optimization. `django-speedinfo` counts
number of calls, cache hits, SQL queries, measures average and total call time
and more for each of your views. Detailed report and profiler controls are
available in Django admin.

![Speedinfo admin screenshot](https://github.com/catcombo/django-speedinfo/raw/master/screenshots/main.png)


# Prerequisites

- Python 2.7, 3.6+
- Django 1.8+


# Installation

```
pip install django-speedinfo
```

# Upgrading from 1.x

Old profiling data will be unavailable after upgrading. Don't forget to export the data in advance.

- Setup one of the storage backends as shown in the section 4 of [Setup](#setup) below.
- `SPEEDINFO_PROFILING_CONDITIONS` is empty by default. If you use `SPEEDINFO_EXCLUDE_URLS` in your
  project you need to initialize the list of conditions explicitly:
  `SPEEDINFO_PROFILING_CONDITIONS = ["speedinfo.conditions.exclude_urls.ExcludeURLCondition"]`
- `SPEEDINFO_REPORT_COLUMNS` and `SPEEDINFO_REPORT_COLUMNS_FORMAT` were removed, use `SPEEDINFO_ADMIN_COLUMNS` instead.
  Every entry in `SPEEDINFO_ADMIN_COLUMNS` list is a tuple (column name, value format, attribute name).
  See [Customize admin columns](#customize-admin-columns) for details. To add extra columns
  follow the instruction in the section [Extra admin columns](#extra-admin-columns) below.
- `speedinfo.settings` module renamed to `speedinfo.conf`
- Base condition class was renamed from `Condition` to `AbstractCondition`


# Setup

1. Add `speedinfo` to `INSTALLED_APPS`.
2. Add `speedinfo.middleware.ProfilerMiddleware` to the end of `MIDDLEWARE` (or `MIDDLEWARE_CLASSES` for Django < 1.10) 
list, but before `django.middleware.cache.FetchFromCacheMiddleware` (if used):
    ```
    MIDDLEWARE = [
        ...,
        "speedinfo.middleware.ProfilerMiddleware",
        "django.middleware.cache.FetchFromCacheMiddleware",
    ]
    ```
3. Setup any cache backend (except local-memory and dummy caching) using our proxy cache backend.
`django-speedinfo` needs the cache to store profiler state between requests and to intercept calls to cache:
    ```
    CACHES = {
        "default": {
            "BACKEND": "speedinfo.backends.proxy_cache",
            "CACHE_BACKEND": "django.core.cache.backends.filebased.FileBasedCache",
            "LOCATION": "/var/tmp/django_cache",
        }
    }
    ```
4. Setup storage for profiling data. `django-speedinfo` comes with two storages to choose from:
    - **Database storage**
        1. Add `speedinfo.storage.database` to `INSTALLED_APPS`.
        2. Add `SPEEDINFO_STORAGE = "speedinfo.storage.database.storage.DatabaseStorage"` to project settings.
        3. Run `python manage.py migrate`.
    - **Cache storage**
        1. Add `SPEEDINFO_STORAGE = "speedinfo.storage.cache.storage.CacheStorage"` to project settings.
        2. Optionally you may define a separate cache in `CACHES` to store profiling data.
           To use it in `CacheStorage` assign `SPEEDINFO_CACHE_STORAGE_CACHE_ALIAS` to the appropriate cache alias.
           Example:
            ```
            CACHES = {
                "default": {
                    "BACKEND": "speedinfo.backends.proxy_cache",
                    "CACHE_BACKEND": "django.core.cache.backends.db.DatabaseCache",
                    "LOCATION": "cache_table",
                },
                "speedinfo-storage": {
                    "BACKEND": "django.core.cache.backends.memcached.MemcachedCache",
                    "LOCATION": "127.0.0.1:11211",
                },
            })
            
            SPEEDINFO_CACHE_STORAGE_CACHE_ALIAS = "speedinfo-storage"
            ```
5. Run `python manage.py collectstatic`.


# Usage

Open `Views profiler` in Django admin. Click the `Turn on` / `Turn off` button
to control profiler state. Press `Reset` button to delete all profiling data.


# Advanced features

## Custom page caching

`django-speedinfo` automatically detects when Django use per-site caching via
`UpdateCacheMiddleware` and `FetchFromCacheMiddleware` middlewares
or per-view caching via `cache_page` decorator and counts cache hit
when retrieving pages from the cache.

If you implement your own caching logic and want to mark the view response
as obtained from the cache, add specified attribute to the `HttpResponse` object
as shown below:
```
from django.views import View
from from speedinfo.conf import speedinfo_settings

class CachedView(View):
    def get(self, request, *args, **kwargs):
        # ...
        # Assume that `response` was taken from the cache
        setattr(response, speedinfo_settings.SPEEDINFO_CACHED_RESPONSE_ATTR_NAME, True)
        return response
```
The default value of `SPEEDINFO_CACHED_RESPONSE_ATTR_NAME` is `_is_cached`.
But you can override it if the attribute name is conflicts with your application logic.

## Customize admin columns

`SPEEDINFO_ADMIN_COLUMNS` allows to control visibility and appearance of Django admin
profiler columns. Every entry in the `SPEEDINFO_ADMIN_COLUMNS` list is a tuple of
(column name, value format, `ViewProfiler` attribute name). Default value:
```
SPEEDINFO_ADMIN_COLUMNS = (
    ("View name", "{}", "view_name"),
    ("HTTP method", "{}", "method"),
    ("Anonymous calls", "{:.1f}%", "anon_calls_ratio"),
    ("Cache hits", "{:.1f}%", "cache_hits_ratio"),
    ("SQL queries per call", "{}", "sql_count_per_call"),
    ("SQL time", "{:.1f}%", "sql_time_ratio"),
    ("Total calls", "{}", "total_calls"),
    ("Time per call", "{:.8f}", "time_per_call"),
    ("Total time", "{:.4f}", "total_time"),
)
```

## Extra admin columns

To add additional data to a storage and columns to admin follow the instruction:

1. Create [custom storage backend](#custom-storage-backend) which will hold or calculate
   additional fields.
2. Implement storage `fetch_all()` method that will return the list of the `ViewProfiler`
   instances initialized with the extra fields. Example:
   ```
   def fetch_all(self, ordering=None):
       ...
       return [
           ViewProfiler(view_name="...", method="...", ..., extra_field="...")
           ...
       ]
   ```
3. Implement sorting by extra fields in `fetch_all()` method.
4. Add extra fields to `SPEEDINFO_ADMIN_COLUMNS` as described in the section
   [Customize admin columns](#customize-admin-columns).

## Profiling conditions

`SPEEDINFO_PROFILING_CONDITIONS` allows to declare a list of condition classes
to filter profiling views by some rules. By default `SPEEDINFO_PROFILING_CONDITIONS` is empty.
`django-speedinfo` comes with one build-in condition - `ExcludeURLCondition`. It allows to
exclude some urls from profiling by adding them to the `SPEEDINFO_EXCLUDE_URLS` list.
Each entry in `SPEEDINFO_EXCLUDE_URLS` is a regex compatible expression to test requested url.
Usage example:
```
SPEEDINFO_PROFILING_CONDITIONS = [
    "speedinfo.conditions.exclude_urls.ExcludeURLCondition",
]

SPEEDINFO_EXCLUDE_URLS = [
    r"/admin/",
    r"/news/$",
    r"/movie/\d+/$",
]
```

To define your own condition class, you must inherit from the base class `speedinfo.conditions.base.AbstractCondition`
and implement all abstract methods. See `ExcludeURLCondition` source code for implementation example. Then add
full path to your class to `SPEEDINFO_PROFILING_CONDITIONS` list as shown above. Conditions in mentioned list
are executed in a top-down order. The first condition returning `False` interrupts the further check.

## Custom storage backend

`django-speedinfo` comes with `DatabaseStorage` and `CacheStorage`. But you may want to write your
own storage (e.g. for MongoDB, Redis or even file-based). First create the storage class based on
`speedinfo.storage.base.AbstractStorage` and implement all abstract methods. See `speedinfo.storage.cache.storage`
and `speedinfo.storage.database.storage` as an examples. Then add path to your custom storage class
to the project settings `SPEEDINFO_STORAGE = "path.to.module.CustomStorage"`. Use our tests
to make sure that everything works as intended (you need to clone repository to get access to the `tests` package):
```
from django.test import TestCase, override_settings
from tests.test_storage import StorageTestCase

@override_settings(
    SPEEDINFO_STORAGE="path.to.module.CustomStorage",
    SPEEDINFO_TESTS=True,
)
class CustomStorageTestCase(StorageTestCase, TestCase):
    pass
```


# Notice

The number of SQL queries measured by `django-speedinfo` may differ from the values
of `django-debug-toolbar` for the same view. It happens because `django-speedinfo`
shows the average number of SQL queries for each view. Also profiler doesn't take
into account SQL queries made in the preceding middlewares.


%package help
Summary:	Development documents and examples for django-speedinfo
Provides:	python3-django-speedinfo-doc
%description help
# django-speedinfo

[![Build Status](https://travis-ci.org/catcombo/django-speedinfo.svg?branch=master)](https://travis-ci.org/catcombo/django-speedinfo)
[![Coverage Status](https://coveralls.io/repos/github/catcombo/django-speedinfo/badge.svg?branch=master)](https://coveralls.io/github/catcombo/django-speedinfo?branch=master)

`django-speedinfo` is a live profiling tool for Django projects to find
the most high loaded views for the next optimization. `django-speedinfo` counts
number of calls, cache hits, SQL queries, measures average and total call time
and more for each of your views. Detailed report and profiler controls are
available in Django admin.

![Speedinfo admin screenshot](https://github.com/catcombo/django-speedinfo/raw/master/screenshots/main.png)


# Prerequisites

- Python 2.7, 3.6+
- Django 1.8+


# Installation

```
pip install django-speedinfo
```

# Upgrading from 1.x

Old profiling data will be unavailable after upgrading. Don't forget to export the data in advance.

- Setup one of the storage backends as shown in the section 4 of [Setup](#setup) below.
- `SPEEDINFO_PROFILING_CONDITIONS` is empty by default. If you use `SPEEDINFO_EXCLUDE_URLS` in your
  project you need to initialize the list of conditions explicitly:
  `SPEEDINFO_PROFILING_CONDITIONS = ["speedinfo.conditions.exclude_urls.ExcludeURLCondition"]`
- `SPEEDINFO_REPORT_COLUMNS` and `SPEEDINFO_REPORT_COLUMNS_FORMAT` were removed, use `SPEEDINFO_ADMIN_COLUMNS` instead.
  Every entry in `SPEEDINFO_ADMIN_COLUMNS` list is a tuple (column name, value format, attribute name).
  See [Customize admin columns](#customize-admin-columns) for details. To add extra columns
  follow the instruction in the section [Extra admin columns](#extra-admin-columns) below.
- `speedinfo.settings` module renamed to `speedinfo.conf`
- Base condition class was renamed from `Condition` to `AbstractCondition`


# Setup

1. Add `speedinfo` to `INSTALLED_APPS`.
2. Add `speedinfo.middleware.ProfilerMiddleware` to the end of `MIDDLEWARE` (or `MIDDLEWARE_CLASSES` for Django < 1.10) 
list, but before `django.middleware.cache.FetchFromCacheMiddleware` (if used):
    ```
    MIDDLEWARE = [
        ...,
        "speedinfo.middleware.ProfilerMiddleware",
        "django.middleware.cache.FetchFromCacheMiddleware",
    ]
    ```
3. Setup any cache backend (except local-memory and dummy caching) using our proxy cache backend.
`django-speedinfo` needs the cache to store profiler state between requests and to intercept calls to cache:
    ```
    CACHES = {
        "default": {
            "BACKEND": "speedinfo.backends.proxy_cache",
            "CACHE_BACKEND": "django.core.cache.backends.filebased.FileBasedCache",
            "LOCATION": "/var/tmp/django_cache",
        }
    }
    ```
4. Setup storage for profiling data. `django-speedinfo` comes with two storages to choose from:
    - **Database storage**
        1. Add `speedinfo.storage.database` to `INSTALLED_APPS`.
        2. Add `SPEEDINFO_STORAGE = "speedinfo.storage.database.storage.DatabaseStorage"` to project settings.
        3. Run `python manage.py migrate`.
    - **Cache storage**
        1. Add `SPEEDINFO_STORAGE = "speedinfo.storage.cache.storage.CacheStorage"` to project settings.
        2. Optionally you may define a separate cache in `CACHES` to store profiling data.
           To use it in `CacheStorage` assign `SPEEDINFO_CACHE_STORAGE_CACHE_ALIAS` to the appropriate cache alias.
           Example:
            ```
            CACHES = {
                "default": {
                    "BACKEND": "speedinfo.backends.proxy_cache",
                    "CACHE_BACKEND": "django.core.cache.backends.db.DatabaseCache",
                    "LOCATION": "cache_table",
                },
                "speedinfo-storage": {
                    "BACKEND": "django.core.cache.backends.memcached.MemcachedCache",
                    "LOCATION": "127.0.0.1:11211",
                },
            })
            
            SPEEDINFO_CACHE_STORAGE_CACHE_ALIAS = "speedinfo-storage"
            ```
5. Run `python manage.py collectstatic`.


# Usage

Open `Views profiler` in Django admin. Click the `Turn on` / `Turn off` button
to control profiler state. Press `Reset` button to delete all profiling data.


# Advanced features

## Custom page caching

`django-speedinfo` automatically detects when Django use per-site caching via
`UpdateCacheMiddleware` and `FetchFromCacheMiddleware` middlewares
or per-view caching via `cache_page` decorator and counts cache hit
when retrieving pages from the cache.

If you implement your own caching logic and want to mark the view response
as obtained from the cache, add specified attribute to the `HttpResponse` object
as shown below:
```
from django.views import View
from from speedinfo.conf import speedinfo_settings

class CachedView(View):
    def get(self, request, *args, **kwargs):
        # ...
        # Assume that `response` was taken from the cache
        setattr(response, speedinfo_settings.SPEEDINFO_CACHED_RESPONSE_ATTR_NAME, True)
        return response
```
The default value of `SPEEDINFO_CACHED_RESPONSE_ATTR_NAME` is `_is_cached`.
But you can override it if the attribute name is conflicts with your application logic.

## Customize admin columns

`SPEEDINFO_ADMIN_COLUMNS` allows to control visibility and appearance of Django admin
profiler columns. Every entry in the `SPEEDINFO_ADMIN_COLUMNS` list is a tuple of
(column name, value format, `ViewProfiler` attribute name). Default value:
```
SPEEDINFO_ADMIN_COLUMNS = (
    ("View name", "{}", "view_name"),
    ("HTTP method", "{}", "method"),
    ("Anonymous calls", "{:.1f}%", "anon_calls_ratio"),
    ("Cache hits", "{:.1f}%", "cache_hits_ratio"),
    ("SQL queries per call", "{}", "sql_count_per_call"),
    ("SQL time", "{:.1f}%", "sql_time_ratio"),
    ("Total calls", "{}", "total_calls"),
    ("Time per call", "{:.8f}", "time_per_call"),
    ("Total time", "{:.4f}", "total_time"),
)
```

## Extra admin columns

To add additional data to a storage and columns to admin follow the instruction:

1. Create [custom storage backend](#custom-storage-backend) which will hold or calculate
   additional fields.
2. Implement storage `fetch_all()` method that will return the list of the `ViewProfiler`
   instances initialized with the extra fields. Example:
   ```
   def fetch_all(self, ordering=None):
       ...
       return [
           ViewProfiler(view_name="...", method="...", ..., extra_field="...")
           ...
       ]
   ```
3. Implement sorting by extra fields in `fetch_all()` method.
4. Add extra fields to `SPEEDINFO_ADMIN_COLUMNS` as described in the section
   [Customize admin columns](#customize-admin-columns).

## Profiling conditions

`SPEEDINFO_PROFILING_CONDITIONS` allows to declare a list of condition classes
to filter profiling views by some rules. By default `SPEEDINFO_PROFILING_CONDITIONS` is empty.
`django-speedinfo` comes with one build-in condition - `ExcludeURLCondition`. It allows to
exclude some urls from profiling by adding them to the `SPEEDINFO_EXCLUDE_URLS` list.
Each entry in `SPEEDINFO_EXCLUDE_URLS` is a regex compatible expression to test requested url.
Usage example:
```
SPEEDINFO_PROFILING_CONDITIONS = [
    "speedinfo.conditions.exclude_urls.ExcludeURLCondition",
]

SPEEDINFO_EXCLUDE_URLS = [
    r"/admin/",
    r"/news/$",
    r"/movie/\d+/$",
]
```

To define your own condition class, you must inherit from the base class `speedinfo.conditions.base.AbstractCondition`
and implement all abstract methods. See `ExcludeURLCondition` source code for implementation example. Then add
full path to your class to `SPEEDINFO_PROFILING_CONDITIONS` list as shown above. Conditions in mentioned list
are executed in a top-down order. The first condition returning `False` interrupts the further check.

## Custom storage backend

`django-speedinfo` comes with `DatabaseStorage` and `CacheStorage`. But you may want to write your
own storage (e.g. for MongoDB, Redis or even file-based). First create the storage class based on
`speedinfo.storage.base.AbstractStorage` and implement all abstract methods. See `speedinfo.storage.cache.storage`
and `speedinfo.storage.database.storage` as an examples. Then add path to your custom storage class
to the project settings `SPEEDINFO_STORAGE = "path.to.module.CustomStorage"`. Use our tests
to make sure that everything works as intended (you need to clone repository to get access to the `tests` package):
```
from django.test import TestCase, override_settings
from tests.test_storage import StorageTestCase

@override_settings(
    SPEEDINFO_STORAGE="path.to.module.CustomStorage",
    SPEEDINFO_TESTS=True,
)
class CustomStorageTestCase(StorageTestCase, TestCase):
    pass
```


# Notice

The number of SQL queries measured by `django-speedinfo` may differ from the values
of `django-debug-toolbar` for the same view. It happens because `django-speedinfo`
shows the average number of SQL queries for each view. Also profiler doesn't take
into account SQL queries made in the preceding middlewares.


%prep
%autosetup -n django-speedinfo-2.0.2

%build
%py3_build

%install
%py3_install
install -d -m755 %{buildroot}/%{_pkgdocdir}
if [ -d doc ]; then cp -arf doc %{buildroot}/%{_pkgdocdir}; fi
if [ -d docs ]; then cp -arf docs %{buildroot}/%{_pkgdocdir}; fi
if [ -d example ]; then cp -arf example %{buildroot}/%{_pkgdocdir}; fi
if [ -d examples ]; then cp -arf examples %{buildroot}/%{_pkgdocdir}; fi
pushd %{buildroot}
if [ -d usr/lib ]; then
	find usr/lib -type f -printf "\"/%h/%f\"\n" >> filelist.lst
fi
if [ -d usr/lib64 ]; then
	find usr/lib64 -type f -printf "\"/%h/%f\"\n" >> filelist.lst
fi
if [ -d usr/bin ]; then
	find usr/bin -type f -printf "\"/%h/%f\"\n" >> filelist.lst
fi
if [ -d usr/sbin ]; then
	find usr/sbin -type f -printf "\"/%h/%f\"\n" >> filelist.lst
fi
touch doclist.lst
if [ -d usr/share/man ]; then
	find usr/share/man -type f -printf "\"/%h/%f.gz\"\n" >> doclist.lst
fi
popd
mv %{buildroot}/filelist.lst .
mv %{buildroot}/doclist.lst .

%files -n python3-django-speedinfo -f filelist.lst
%dir %{python3_sitelib}/*

%files help -f doclist.lst
%{_docdir}/*

%changelog
* Fri Jun 09 2023 Python_Bot <Python_Bot@openeuler.org> - 2.0.2-1
- Package Spec generated