initial code commit

.gitignore

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+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+cover/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+.pybuilder/
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+#   For a library or package, you might want to ignore these files since the code is
+#   intended to run in multiple environments; otherwise, check them in:
+# .python-version
+
+# pipenv
+#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+#   However, in case of collaboration, if having platform-specific dependencies or dependencies
+#   having no cross-platform support, pipenv may install dependencies that don't work, or not
+#   install all needed dependencies.
+#Pipfile.lock
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+# pytype static type analyzer
+.pytype/
+
+# Cython debug symbols
+cython_debug/

CONTRIBUTING.md

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+Please open a new issue or new pull request for bugs, feedback, or new features you would like to see. If there is an issue you would like to work on, please leave a comment and we will be happy to assist. New contributions and contributors are very welcome!
+
+The main development work is done on the "master" branch. The "stable" branch is protected and used for official releases. The rest of the branches are for release maintenance and should not be used normally. Unless otherwise told by a maintainer, pull requests should be made and submitted to the "master" branch.
+
+New to GitHub or open source projects? If you are unsure about where to start or haven't used GitHub before, please feel free to contact the package maintainers.
+
+Feedback and feature requests? Is there something missing you would like to see? Please open an issue or send an email to the maintainers. This package follows the Spacetelescope [Code of Conduct](CODE_OF_CONDUCT.md) strives to provide a welcoming community to all of our users and contributors.

LICENSE

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+Copyright (C) 2020 Association of Universities for Research in Astronomy (AURA)
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+    1. Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+
+    2. Redistributions in binary form must reproduce the above
+      copyright notice, this list of conditions and the following
+      disclaimer in the documentation and/or other materials provided
+      with the distribution.
+
+    3. The name of AURA and its representatives may not be used to
+      endorse or promote products derived from this software without
+      specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY AURA ``AS IS'' AND ANY EXPRESS OR IMPLIED
+WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL AURA BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+DAMAGE.

MANIFEST.in

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+Copyright (C) 2020 Association of Universities for Research in Astronomy (AURA)
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+    1. Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+
+    2. Redistributions in binary form must reproduce the above
+      copyright notice, this list of conditions and the following
+      disclaimer in the documentation and/or other materials provided
+      with the distribution.
+
+    3. The name of AURA and its representatives may not be used to
+      endorse or promote products derived from this software without
+      specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY AURA ``AS IS'' AND ANY EXPRESS OR IMPLIED
+WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL AURA BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+DAMAGE.

setup.cfg

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+[metadata]
+name = roman_datamodels
+description = TODO
+long_description = TODO
+author = TODO
+license = BSD-3-Clause
+url = https://github.com/spacetelescope/roman_datamodels
+project_urls =
+    Bug Tracker = https://github.com/spacetelescope/roman_datamodels/issues
+    Source Code = https://github.com/spacetelescope/roman_datamodels
+classifiers =
+    Intended Audience :: Science/Research
+    Topic :: Scientific/Engineering :: Astronomy
+    License :: OSI Approved :: BSD License
+    Programming Language :: Python :: 3
+
+[options]
+zip_safe = True
+python_requires = >=3.6
+setup_requires =
+    setuptools_scm
+install_requires =
+    jsonschema>=3.0.2
+    asdf>=2.7.1
+    psutil>=5.7.2
+    numpy>=1.16
+    astropy>=4.0
+package_dir =
+    =src
+packages = find:
+
+[options.entry_points]
+asdf.extensions =
+    roman_datamodels = roman_datamodels.integration:get_extensions
+# asdf.resource_mappings =
+#    roman_datamodels = roman_datamodels.integration:get_resource_mappings
+
+[options.package_data]
+roman_datamodels.resources = manifests/*.yaml, schemas/*.yaml, schemas/**/*.yaml
+
+[options.packages.find]
+where = src
+
+[options.extras_require]
+test =
+    pytest>=4.6.0
+    pytest-doctestplus
+    pytest-openfiles>=0.5.0
+aws =
+    stsci-aws-utils>=0.1.2
+
+[flake8]
+select = F, W, E101, E111, E112, E113, E401, E402, E501, E711, E722
+# We should set max line length to 88 eventually
+max-line-length = 130
+exclude =
+    docs,
+ignore = E203, W503, W504, W605
+
+[tool:pytest]
+minversion = 4.6
+doctest_plus = true
+doctest_rst = true
+text_file_format = rst
+addopts = --show-capture=no --open-files

setup.py

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+#!/usr/bin/env python3
+from setuptools import setup
+
+setup(use_scm_version=True)

src/roman_datamodels/extensions.py

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+from asdf.extension import ManifestExtension
+from .stnode import (
+	ExposureConverter, 
+	WfiScienceRawConverter,
+    WfiModeConverter,
+)    
+
+DATAMODEL_CONVERTERS = [
+    ExposureConverter(),
+    WfiModeConverter(),
+    WfiScienceRawConverter(),
+]
+
+DATAMODEL_EXTENSIONS = [
+    ManifestExtension.from_uri(
+        "http://stsci.edu/asdf/datamodels/roman/manifests/datamodels-1.0", 
+    	converters=DATAMODEL_CONVERTERS)
+]

src/roman_datamodels/integration.py

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+import sys
+
+from asdf.resource import DirectoryResourceMapping
+
+if sys.version_info < (3, 9):
+    import importlib_resources
+else:
+    import importlib.resources as importlib_resources
+
+
+# def get_resource_mappings():
+#     """
+#     Get the resource mapping instances for the datamodel schemas
+#     and manifests.  This method is registered with the
+#     asdf.resource_mappings entry point.
+
+#     Returns
+#     -------
+#     list of collections.abc.Mapping
+#     """
+#     from . import resources
+#     resources_root = importlib_resources.files(resources)
+
+#     return [
+#         DirectoryResourceMapping(resources_root / "schemas", "http://stsci.edu/schemas/datamodels", recursive=True),
+#         DirectoryResourceMapping(resources_root / "manifests", "http://stsci.edu/asdf/datamodels/manifests"),
+#     ]
+
+
+def get_extensions():
+    """
+    Get the extension instances for the various astropy
+    extensions.  This method is registered with the
+    asdf.extensions entry point.
+
+    Returns
+    -------
+    list of asdf.extension.Extension
+    """
+    from . import extensions
+    return extensions.DATAMODEL_EXTENSIONS