python-cdd-gae 0.0.3

Migration tooling from Google App Engine (webapp2, ndb) to python-cdd supported (FastAPI, SQLalchemy).

cdd-python-gae

Migration tooling from Google App Engine (webapp2, ndb) to python-cdd supported (FastAPI, SQLalchemy).

Public SDK works with filenames, source code, and even in memory constructs (e.g., as imported into your REPL). CLI available also.

Install package

PyPi

pip install python-cdd-gae

Master

pip install -r https://raw.githubusercontent.com/offscale/cdd-python-gae/master/requirements.txt
pip install https://api.github.com/repos/offscale/cdd-python-gae/zipball#egg=cdd

Goal

Migrate from Google App Engine to cloud-independent runtime (e.g., vanilla CPython 3.11 with SQLite).

Relation to other projects

This was created independent of cdd-python project for two reasons:

0. Unidirectional;
1. Relevant to fewer people.

SDK example (REPL)

To create a class from tf.keras.optimizers.Adam:

>>> from cdd.source_transformer import to_code

>>> from cdd import emit, parse

Approach

Traverse the AST for ndb and webapp2.

Advantages

Disadvantages

Alternatives

Minor other use-cases this facilitates

CLI for this project

$ python -m cdd_gae --help

usage: python -m cdd_gae [-h] [--version]
                         {ndb2sqlalchemy,webapp2_to_fastapi} ...

Migration tooling from Google App Engine (webapp2, ndb) to python-cdd
supported (FastAPI, SQLalchemy).

positional arguments:
  {ndb2sqlalchemy,webapp2_to_fastapi}
    ndb2sqlalchemy      Parse NDB emit SQLalchemy
    webapp2_to_fastapi  Parse WebApp2 emit FastAPI

optional arguments:
  -h, --help            show this help message and exit
  --version             show program's version number and exit

ndb2sqlalchemy (webapp2_to_fastapi takes same args)

$ python -m cdd_gae ndb2sqlalchemy --help

usage: python -m cdd_gae ndb2sqlalchemy [-h] -i INPUT_FILE -o OUTPUT_FILE
                                        [--dry-run]

options:
  -h, --help            show this help message and exit
  -i INPUT_FILE, --input-file INPUT_FILE
                        Python file to parse NDB `class`es out of
  -o OUTPUT_FILE, --output-file OUTPUT_FILE
                        Empty file to generate SQLalchemy classes to
  --dry-run             Show what would be created; don't actually write to
                        the filesystem.

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License

Licensed under either of

• Apache License, Version 2.0 (LICENSE-APACHE or https://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT or https://opensource.org/licenses/MIT)

at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.