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
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
|
%global _empty_manifest_terminate_build 0
Name: python-dslibrary
Version: 0.0.74
Release: 1
Summary: Data Science Framework & Abstractions
License: Apache
URL: https://pypi.org/project/dslibrary/
Source0: https://mirrors.aliyun.com/pypi/web/packages/63/0c/9b68d09d9740bf47eafa46a4f55e4ca51d25851e6799bb93f6e78026a6ca/dslibrary-0.0.74.tar.gz
BuildArch: noarch
Requires: python3-jsonschema
Requires: python3-pyyaml
Requires: python3-pandas
Requires: python3-pexpect
Requires: python3-fsspec
Requires: python3-boto3
Requires: python3-s3fs
Requires: python3-gcsfs
Requires: python3-adlfs
Requires: python3-psycopg2-binary
Requires: python3-PyMySQL
Requires: python3-sqlite3
Requires: python3-openpyxl
%description
# DSLIBRARY
## Installation
# normal install
pip install dslibrary
# to include a robust set of data connectors:
pip install dslibrary[all]
## Data Science Framework and Abstraction of Data Details
Data science code is supposed to focus on the data, but it frequently gets bogged down in repetitive tasks like
juggling parameters, working out file formats, and connecting to cloud data sources. This library proposes some ways
to make those parts of life a little easier, and to make the resulting code a little shorter and more readable.
Some of this project's goals:
* make it possible to create 'situation agnostic' code which runs unchanged across many platforms, against many data
sources and in many data formats
* remove the need to code some of the most often repeated mundane chores, such as parameter parsing, read/write in
different file formats with different formatting options, cloud data access
* enhance the ability to run and test code locally
* support higher security and cross-cloud data access
* compatibility with mlflow.tracking, with the option to delegate to mlflow or not
If you use dslibrary with no configuration it will revert to very straightforward behaviors that a person would expect
while doing local development. But it can be configured to operate in a wide range of environments.
## Data Cleaning Example
Here's a simple data cleaning example. You can run it from the command line, or call it's clean() method and it
will clip the values in a column of the supplied data. But so far it only works on local files, it only supports
one file format (CSV), and it uses read_csv()'s default formatting arguments, which will not always work.
# clean_it.py
import pandas
def clean(upper=100, input="in.csv", output="out.csv"):
df = pandas.read_csv(input)
df.loc[df.x > upper, 'x'] = upper
df.to_csv(out)
if __name__ == "__main__":
# INSERT ARGUMENT PARSING CODE HERE
clean(...)
Here it is converted to use dslibrary. Now our code will work with any data format from any source. It still has a
parameter 'upper' that can be set, it reads from a named input "in", and writes to a named output "out". And it is
compatible with the prior version.
import dslibrary
def clean(upper=100, input="in", output="out"):
df = dslibrary.load_dataframe(input)
df.loc[df.x > upper, 'x'] = upper
dslibrary.write_resource(output, df)
if __name__ == "__main__":
clean(**dsl.get_parameters())
Now if we execute that code through dslibrary's ModelRunner class, we can point it to data in various places and set
different file formatting options:
from dslibrary import ModelRunner
import clean_it
ModelRunner() \
.set_parameter("upper", 50) \
.set_input("in", "some_file.csv", format_options={"delimiter": "|") \
.set_output("out", "target.json", format_optons={"lines": True}) \
.run_method(clean_it.clean)
Or to the cloud:
from dslibrary import ModelRunner
import clean_it
ModelRunner() \
.set_parameter("upper", 50) \
.set_input("in", "s3://bucket/raw.csv", format_options={"delim_whitespace": True}, access_key=..., secret_key=...) \
.set_output("out", "s3://bucket/clipped.csv", format_options={"sep": "\t"}) \
.run_method(clean_it.clean)
Or I can invoke it as a subprocess:
.run_local("path/to/clean_it.py")
This will also work with notebooks:
.run_local("path/to/clean_it.ipynb")
## More examples
### Swapping out file sources
Write code that can load files from a local folder, or an s3 bucket. Note that an input can be either a folder or a
file. In this case we are pointing to a folder.
def my_code(dsl):
df = dsl.load_dataframe("data.csv")
msg = dsl.read_resource("msg.txt")
from dslibrary import ModelRunner
runner = ModelRunner()
# files from s3
runner.set_input("the_files", uri="s3://bucket", access_key=..., secret_key=...)
# or files from a local folder
runner.set_input("the_files", uri="/folder")
runner.run_method(my_code)
### Swapping out SQL databases
SQL can target a normal database engine, like MySQL, or it can target a folder containing (for instance) CSV files.
def my_model(dsl):
df = dsl.sql_select("select x from t1", engine="the_files")
runner = ModelRunner()
# tables in mysql
runner.set_input("the_files", uri="mysql://host/db", username=..., password=...)
# or tables in local files
runner.set_input("the_files", uri="/folder")
runner.run_method(my_model)
### Report a metric about some data
Report the average of some data:
import dslibrary as dsl
data = dsl.load_dataframe("input")
with dsl.start_run():
dsl.log_metric("avg_temp", data.temperature.mean())
Call it with some SQL data:
from dslibrary import ModelRunner
runner = ModelRunner()
runner.set_input(
"input",
uri="mysql://username:password@mysql-server/climate",
sql="select temperature from readings order by timestamp desc limit 100"
))
runner.run_local("avg_temp.py")
Change format & filename for metrics output (format is implied by filename):
runner.set_output(dslibrary.METRICS_ALIAS, "metrics.csv", format_optons={"sep": "\t"})
We could send the metrics to mlflow instead:
runner = ModelRunner(mlflow=True)
### SQL against anything
It can be annoying to have to switch between pandas and SQL depending on which type of data has been provided. So
dslibrary provides reasonably robust SQL querying of data files.
Query files:
df = dslibrary.sql_select("SELECT x, y from `table1.csv` WHERE x < 100")
df.head()
Or data:
df = dslibrary.sql_select("SELECT * from my_table where x < 100", data={"table1": my_table})
Or connect to a named SQL engine:
runner = ModelRunner()
runner.set_input("sql1", uri="postgres://host/database", username="u", password="p")
...
df = dslibrary.sql_select("SELECT something", engine="sql1")
## Reconfigure Everything
If all the essential connections to the outside from your code are 'abstracted' and can be repointed elsewhere,
then your code will run everywhere.
The entire implementation of dslibrary can be changed through environment variables. In fact, all the
ModelRunner class really does is set environment variables.
These are the main types of interface data science code has to the outside world. Dslibrary offers methods to
manage all of these, and they can all be handled differently through configuration:
* parameters - if you think of your unit of work as a function, it's going to have some arguments. Whether they are
for configuration, feature values or hyperparameters, there are some values that need to get to your entry point.
* resources - file-like data, which might be here, there or on the cloud, and in any format
* connections - filesystems like S3, or databases like PostGres
* metrics & logging - all the usual tracking information
* model data - pickled binaries and such
## Data Security and Cross-Cloud Data
The normal way of accessing data in the cloud is to store CSP credentials in, say, "~/.aws/credentials", and then the
intervening library is able to read and write to s3 buckets. You have to make sure this setup is done, that the right
packages are in your environment, and write your code accordingly. Here are the main problems:
### The setup is annoying
It can be time consuming to ensure that every system running the code has this credential configuration in place,
and one system may need to access multiple accounts for the same CSP. And especially if you are on one CSP trying to
access data in another CSP there is no automated setup you can count on.
The usual solution is to require that all the data science code add support for some particular cloud provider,
and accept credentials as secrets. It's a lot of overhead.
The way dslibrary aims to help is by separating out
all the information about a particular data source or target and providing ways to bundle and un-bundle it so that it
can be sent where it is needed. The data science code itself should not have to worry about these settings or need
to change just because the data moved or changed format.
### Do you trust the code?
The code often has access to those credentials. Maybe you trust the code not to "lift" those credentials and use
them elsewhere, maybe you don't. Maybe you can ensure those credentials are locked down to no more than s3 bucket
read access, or maybe you can't. Even secret management systems will still expose the credentials to the code.
The solution dslibrary facilitates is to have a different, trusted system perform the data access. In dslibrary
there is an extensible/customizable way to "transport" data access to another system. By setting an environment
variable or two (one for the remote URL, another for an access token), the data read and write operations can be
managed by that other system. Before executing the code, one sends the URIs, credentials and file format information
to the data access system.
The `transport.to_rest` class will send dslibrary calls to a REST service.
The `transport.to_volume` class will send dslibrary calls through a shared volume to a Kubernetes sidecar.
# COPYRIGHT
(c) Accenture 2021-2022
%package -n python3-dslibrary
Summary: Data Science Framework & Abstractions
Provides: python-dslibrary
BuildRequires: python3-devel
BuildRequires: python3-setuptools
BuildRequires: python3-pip
%description -n python3-dslibrary
# DSLIBRARY
## Installation
# normal install
pip install dslibrary
# to include a robust set of data connectors:
pip install dslibrary[all]
## Data Science Framework and Abstraction of Data Details
Data science code is supposed to focus on the data, but it frequently gets bogged down in repetitive tasks like
juggling parameters, working out file formats, and connecting to cloud data sources. This library proposes some ways
to make those parts of life a little easier, and to make the resulting code a little shorter and more readable.
Some of this project's goals:
* make it possible to create 'situation agnostic' code which runs unchanged across many platforms, against many data
sources and in many data formats
* remove the need to code some of the most often repeated mundane chores, such as parameter parsing, read/write in
different file formats with different formatting options, cloud data access
* enhance the ability to run and test code locally
* support higher security and cross-cloud data access
* compatibility with mlflow.tracking, with the option to delegate to mlflow or not
If you use dslibrary with no configuration it will revert to very straightforward behaviors that a person would expect
while doing local development. But it can be configured to operate in a wide range of environments.
## Data Cleaning Example
Here's a simple data cleaning example. You can run it from the command line, or call it's clean() method and it
will clip the values in a column of the supplied data. But so far it only works on local files, it only supports
one file format (CSV), and it uses read_csv()'s default formatting arguments, which will not always work.
# clean_it.py
import pandas
def clean(upper=100, input="in.csv", output="out.csv"):
df = pandas.read_csv(input)
df.loc[df.x > upper, 'x'] = upper
df.to_csv(out)
if __name__ == "__main__":
# INSERT ARGUMENT PARSING CODE HERE
clean(...)
Here it is converted to use dslibrary. Now our code will work with any data format from any source. It still has a
parameter 'upper' that can be set, it reads from a named input "in", and writes to a named output "out". And it is
compatible with the prior version.
import dslibrary
def clean(upper=100, input="in", output="out"):
df = dslibrary.load_dataframe(input)
df.loc[df.x > upper, 'x'] = upper
dslibrary.write_resource(output, df)
if __name__ == "__main__":
clean(**dsl.get_parameters())
Now if we execute that code through dslibrary's ModelRunner class, we can point it to data in various places and set
different file formatting options:
from dslibrary import ModelRunner
import clean_it
ModelRunner() \
.set_parameter("upper", 50) \
.set_input("in", "some_file.csv", format_options={"delimiter": "|") \
.set_output("out", "target.json", format_optons={"lines": True}) \
.run_method(clean_it.clean)
Or to the cloud:
from dslibrary import ModelRunner
import clean_it
ModelRunner() \
.set_parameter("upper", 50) \
.set_input("in", "s3://bucket/raw.csv", format_options={"delim_whitespace": True}, access_key=..., secret_key=...) \
.set_output("out", "s3://bucket/clipped.csv", format_options={"sep": "\t"}) \
.run_method(clean_it.clean)
Or I can invoke it as a subprocess:
.run_local("path/to/clean_it.py")
This will also work with notebooks:
.run_local("path/to/clean_it.ipynb")
## More examples
### Swapping out file sources
Write code that can load files from a local folder, or an s3 bucket. Note that an input can be either a folder or a
file. In this case we are pointing to a folder.
def my_code(dsl):
df = dsl.load_dataframe("data.csv")
msg = dsl.read_resource("msg.txt")
from dslibrary import ModelRunner
runner = ModelRunner()
# files from s3
runner.set_input("the_files", uri="s3://bucket", access_key=..., secret_key=...)
# or files from a local folder
runner.set_input("the_files", uri="/folder")
runner.run_method(my_code)
### Swapping out SQL databases
SQL can target a normal database engine, like MySQL, or it can target a folder containing (for instance) CSV files.
def my_model(dsl):
df = dsl.sql_select("select x from t1", engine="the_files")
runner = ModelRunner()
# tables in mysql
runner.set_input("the_files", uri="mysql://host/db", username=..., password=...)
# or tables in local files
runner.set_input("the_files", uri="/folder")
runner.run_method(my_model)
### Report a metric about some data
Report the average of some data:
import dslibrary as dsl
data = dsl.load_dataframe("input")
with dsl.start_run():
dsl.log_metric("avg_temp", data.temperature.mean())
Call it with some SQL data:
from dslibrary import ModelRunner
runner = ModelRunner()
runner.set_input(
"input",
uri="mysql://username:password@mysql-server/climate",
sql="select temperature from readings order by timestamp desc limit 100"
))
runner.run_local("avg_temp.py")
Change format & filename for metrics output (format is implied by filename):
runner.set_output(dslibrary.METRICS_ALIAS, "metrics.csv", format_optons={"sep": "\t"})
We could send the metrics to mlflow instead:
runner = ModelRunner(mlflow=True)
### SQL against anything
It can be annoying to have to switch between pandas and SQL depending on which type of data has been provided. So
dslibrary provides reasonably robust SQL querying of data files.
Query files:
df = dslibrary.sql_select("SELECT x, y from `table1.csv` WHERE x < 100")
df.head()
Or data:
df = dslibrary.sql_select("SELECT * from my_table where x < 100", data={"table1": my_table})
Or connect to a named SQL engine:
runner = ModelRunner()
runner.set_input("sql1", uri="postgres://host/database", username="u", password="p")
...
df = dslibrary.sql_select("SELECT something", engine="sql1")
## Reconfigure Everything
If all the essential connections to the outside from your code are 'abstracted' and can be repointed elsewhere,
then your code will run everywhere.
The entire implementation of dslibrary can be changed through environment variables. In fact, all the
ModelRunner class really does is set environment variables.
These are the main types of interface data science code has to the outside world. Dslibrary offers methods to
manage all of these, and they can all be handled differently through configuration:
* parameters - if you think of your unit of work as a function, it's going to have some arguments. Whether they are
for configuration, feature values or hyperparameters, there are some values that need to get to your entry point.
* resources - file-like data, which might be here, there or on the cloud, and in any format
* connections - filesystems like S3, or databases like PostGres
* metrics & logging - all the usual tracking information
* model data - pickled binaries and such
## Data Security and Cross-Cloud Data
The normal way of accessing data in the cloud is to store CSP credentials in, say, "~/.aws/credentials", and then the
intervening library is able to read and write to s3 buckets. You have to make sure this setup is done, that the right
packages are in your environment, and write your code accordingly. Here are the main problems:
### The setup is annoying
It can be time consuming to ensure that every system running the code has this credential configuration in place,
and one system may need to access multiple accounts for the same CSP. And especially if you are on one CSP trying to
access data in another CSP there is no automated setup you can count on.
The usual solution is to require that all the data science code add support for some particular cloud provider,
and accept credentials as secrets. It's a lot of overhead.
The way dslibrary aims to help is by separating out
all the information about a particular data source or target and providing ways to bundle and un-bundle it so that it
can be sent where it is needed. The data science code itself should not have to worry about these settings or need
to change just because the data moved or changed format.
### Do you trust the code?
The code often has access to those credentials. Maybe you trust the code not to "lift" those credentials and use
them elsewhere, maybe you don't. Maybe you can ensure those credentials are locked down to no more than s3 bucket
read access, or maybe you can't. Even secret management systems will still expose the credentials to the code.
The solution dslibrary facilitates is to have a different, trusted system perform the data access. In dslibrary
there is an extensible/customizable way to "transport" data access to another system. By setting an environment
variable or two (one for the remote URL, another for an access token), the data read and write operations can be
managed by that other system. Before executing the code, one sends the URIs, credentials and file format information
to the data access system.
The `transport.to_rest` class will send dslibrary calls to a REST service.
The `transport.to_volume` class will send dslibrary calls through a shared volume to a Kubernetes sidecar.
# COPYRIGHT
(c) Accenture 2021-2022
%package help
Summary: Development documents and examples for dslibrary
Provides: python3-dslibrary-doc
%description help
# DSLIBRARY
## Installation
# normal install
pip install dslibrary
# to include a robust set of data connectors:
pip install dslibrary[all]
## Data Science Framework and Abstraction of Data Details
Data science code is supposed to focus on the data, but it frequently gets bogged down in repetitive tasks like
juggling parameters, working out file formats, and connecting to cloud data sources. This library proposes some ways
to make those parts of life a little easier, and to make the resulting code a little shorter and more readable.
Some of this project's goals:
* make it possible to create 'situation agnostic' code which runs unchanged across many platforms, against many data
sources and in many data formats
* remove the need to code some of the most often repeated mundane chores, such as parameter parsing, read/write in
different file formats with different formatting options, cloud data access
* enhance the ability to run and test code locally
* support higher security and cross-cloud data access
* compatibility with mlflow.tracking, with the option to delegate to mlflow or not
If you use dslibrary with no configuration it will revert to very straightforward behaviors that a person would expect
while doing local development. But it can be configured to operate in a wide range of environments.
## Data Cleaning Example
Here's a simple data cleaning example. You can run it from the command line, or call it's clean() method and it
will clip the values in a column of the supplied data. But so far it only works on local files, it only supports
one file format (CSV), and it uses read_csv()'s default formatting arguments, which will not always work.
# clean_it.py
import pandas
def clean(upper=100, input="in.csv", output="out.csv"):
df = pandas.read_csv(input)
df.loc[df.x > upper, 'x'] = upper
df.to_csv(out)
if __name__ == "__main__":
# INSERT ARGUMENT PARSING CODE HERE
clean(...)
Here it is converted to use dslibrary. Now our code will work with any data format from any source. It still has a
parameter 'upper' that can be set, it reads from a named input "in", and writes to a named output "out". And it is
compatible with the prior version.
import dslibrary
def clean(upper=100, input="in", output="out"):
df = dslibrary.load_dataframe(input)
df.loc[df.x > upper, 'x'] = upper
dslibrary.write_resource(output, df)
if __name__ == "__main__":
clean(**dsl.get_parameters())
Now if we execute that code through dslibrary's ModelRunner class, we can point it to data in various places and set
different file formatting options:
from dslibrary import ModelRunner
import clean_it
ModelRunner() \
.set_parameter("upper", 50) \
.set_input("in", "some_file.csv", format_options={"delimiter": "|") \
.set_output("out", "target.json", format_optons={"lines": True}) \
.run_method(clean_it.clean)
Or to the cloud:
from dslibrary import ModelRunner
import clean_it
ModelRunner() \
.set_parameter("upper", 50) \
.set_input("in", "s3://bucket/raw.csv", format_options={"delim_whitespace": True}, access_key=..., secret_key=...) \
.set_output("out", "s3://bucket/clipped.csv", format_options={"sep": "\t"}) \
.run_method(clean_it.clean)
Or I can invoke it as a subprocess:
.run_local("path/to/clean_it.py")
This will also work with notebooks:
.run_local("path/to/clean_it.ipynb")
## More examples
### Swapping out file sources
Write code that can load files from a local folder, or an s3 bucket. Note that an input can be either a folder or a
file. In this case we are pointing to a folder.
def my_code(dsl):
df = dsl.load_dataframe("data.csv")
msg = dsl.read_resource("msg.txt")
from dslibrary import ModelRunner
runner = ModelRunner()
# files from s3
runner.set_input("the_files", uri="s3://bucket", access_key=..., secret_key=...)
# or files from a local folder
runner.set_input("the_files", uri="/folder")
runner.run_method(my_code)
### Swapping out SQL databases
SQL can target a normal database engine, like MySQL, or it can target a folder containing (for instance) CSV files.
def my_model(dsl):
df = dsl.sql_select("select x from t1", engine="the_files")
runner = ModelRunner()
# tables in mysql
runner.set_input("the_files", uri="mysql://host/db", username=..., password=...)
# or tables in local files
runner.set_input("the_files", uri="/folder")
runner.run_method(my_model)
### Report a metric about some data
Report the average of some data:
import dslibrary as dsl
data = dsl.load_dataframe("input")
with dsl.start_run():
dsl.log_metric("avg_temp", data.temperature.mean())
Call it with some SQL data:
from dslibrary import ModelRunner
runner = ModelRunner()
runner.set_input(
"input",
uri="mysql://username:password@mysql-server/climate",
sql="select temperature from readings order by timestamp desc limit 100"
))
runner.run_local("avg_temp.py")
Change format & filename for metrics output (format is implied by filename):
runner.set_output(dslibrary.METRICS_ALIAS, "metrics.csv", format_optons={"sep": "\t"})
We could send the metrics to mlflow instead:
runner = ModelRunner(mlflow=True)
### SQL against anything
It can be annoying to have to switch between pandas and SQL depending on which type of data has been provided. So
dslibrary provides reasonably robust SQL querying of data files.
Query files:
df = dslibrary.sql_select("SELECT x, y from `table1.csv` WHERE x < 100")
df.head()
Or data:
df = dslibrary.sql_select("SELECT * from my_table where x < 100", data={"table1": my_table})
Or connect to a named SQL engine:
runner = ModelRunner()
runner.set_input("sql1", uri="postgres://host/database", username="u", password="p")
...
df = dslibrary.sql_select("SELECT something", engine="sql1")
## Reconfigure Everything
If all the essential connections to the outside from your code are 'abstracted' and can be repointed elsewhere,
then your code will run everywhere.
The entire implementation of dslibrary can be changed through environment variables. In fact, all the
ModelRunner class really does is set environment variables.
These are the main types of interface data science code has to the outside world. Dslibrary offers methods to
manage all of these, and they can all be handled differently through configuration:
* parameters - if you think of your unit of work as a function, it's going to have some arguments. Whether they are
for configuration, feature values or hyperparameters, there are some values that need to get to your entry point.
* resources - file-like data, which might be here, there or on the cloud, and in any format
* connections - filesystems like S3, or databases like PostGres
* metrics & logging - all the usual tracking information
* model data - pickled binaries and such
## Data Security and Cross-Cloud Data
The normal way of accessing data in the cloud is to store CSP credentials in, say, "~/.aws/credentials", and then the
intervening library is able to read and write to s3 buckets. You have to make sure this setup is done, that the right
packages are in your environment, and write your code accordingly. Here are the main problems:
### The setup is annoying
It can be time consuming to ensure that every system running the code has this credential configuration in place,
and one system may need to access multiple accounts for the same CSP. And especially if you are on one CSP trying to
access data in another CSP there is no automated setup you can count on.
The usual solution is to require that all the data science code add support for some particular cloud provider,
and accept credentials as secrets. It's a lot of overhead.
The way dslibrary aims to help is by separating out
all the information about a particular data source or target and providing ways to bundle and un-bundle it so that it
can be sent where it is needed. The data science code itself should not have to worry about these settings or need
to change just because the data moved or changed format.
### Do you trust the code?
The code often has access to those credentials. Maybe you trust the code not to "lift" those credentials and use
them elsewhere, maybe you don't. Maybe you can ensure those credentials are locked down to no more than s3 bucket
read access, or maybe you can't. Even secret management systems will still expose the credentials to the code.
The solution dslibrary facilitates is to have a different, trusted system perform the data access. In dslibrary
there is an extensible/customizable way to "transport" data access to another system. By setting an environment
variable or two (one for the remote URL, another for an access token), the data read and write operations can be
managed by that other system. Before executing the code, one sends the URIs, credentials and file format information
to the data access system.
The `transport.to_rest` class will send dslibrary calls to a REST service.
The `transport.to_volume` class will send dslibrary calls through a shared volume to a Kubernetes sidecar.
# COPYRIGHT
(c) Accenture 2021-2022
%prep
%autosetup -n dslibrary-0.0.74
%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-dslibrary -f filelist.lst
%dir %{python3_sitelib}/*
%files help -f doclist.lst
%{_docdir}/*
%changelog
* Thu Jun 08 2023 Python_Bot <Python_Bot@openeuler.org> - 0.0.74-1
- Package Spec generated
|