initial commit

.dockerignore

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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
+
+# poetry
+#   Similar to Pipfile.lock, it is generally recommended to include poetry.lock in version control.
+#   This is especially recommended for binary packages to ensure reproducibility, and is more
+#   commonly ignored for libraries.
+#   https://python-poetry.org/docs/basic-usage/#commit-your-poetrylock-file-to-version-control
+#poetry.lock
+
+# pdm
+#   Similar to Pipfile.lock, it is generally recommended to include pdm.lock in version control.
+#pdm.lock
+#   pdm stores project-wide configurations in .pdm.toml, but it is recommended to not include it
+#   in version control.
+#   https://pdm.fming.dev/latest/usage/project/#working-with-version-control
+.pdm.toml
+.pdm-python
+.pdm-build/
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow and github.com/pdm-project/pdm
+__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/
+
+# PyCharm
+#  JetBrains specific template is maintained in a separate JetBrains.gitignore that can
+#  be found at https://github.com/github/gitignore/blob/main/Global/JetBrains.gitignore
+#  and can be added to the global gitignore or merged into this file.  For a more nuclear
+#  option (not recommended) you can uncomment the following to ignore the entire idea folder.
+#.idea/

.envrc

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+export FLASK_APP=api.py
+export FLASK_DEBUG=1

.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
+
+# poetry
+#   Similar to Pipfile.lock, it is generally recommended to include poetry.lock in version control.
+#   This is especially recommended for binary packages to ensure reproducibility, and is more
+#   commonly ignored for libraries.
+#   https://python-poetry.org/docs/basic-usage/#commit-your-poetrylock-file-to-version-control
+#poetry.lock
+
+# pdm
+#   Similar to Pipfile.lock, it is generally recommended to include pdm.lock in version control.
+#pdm.lock
+#   pdm stores project-wide configurations in .pdm.toml, but it is recommended to not include it
+#   in version control.
+#   https://pdm.fming.dev/latest/usage/project/#working-with-version-control
+.pdm.toml
+.pdm-python
+.pdm-build/
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow and github.com/pdm-project/pdm
+__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/
+
+# PyCharm
+#  JetBrains specific template is maintained in a separate JetBrains.gitignore that can
+#  be found at https://github.com/github/gitignore/blob/main/Global/JetBrains.gitignore
+#  and can be added to the global gitignore or merged into this file.  For a more nuclear
+#  option (not recommended) you can uncomment the following to ignore the entire idea folder.
+#.idea/

Dockerfile

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+FROM python:alpine
+
+WORKDIR /app
+
+COPY ./requirements.txt  /app/requirements.txt
+RUN pip install -r requirements.txt
+
+COPY . /app/
+
+EXPOSE 5000
+
+CMD ["gunicorn", "--bind", "0.0.0.0:5000", "wsgi:app"]

Makefile

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+dev:
+				docker run -p 5000:5000 -v ~/.kube/config:/root/.kube/config -e FLASK_ENV=development -e FLASK_DEBUG=1 -v ./:/app db-deployer flask run --host 0.0.0.0
+run:
+				docker run -p 5000:5000 -v ~/.kube/config:/root/.kube/config db-deployer
+
+clean:
+				for resource in $$(kubectl -n test get mariadbs.k8s.mariadb.com,pvc -o name); do kubectl -n test delete $$resource; done
+
+build:
+				docker build -t db-deployer .

README.md

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+https://faizanbashir.github.io/creating-kubernetes-custom-resource-definition-using-python#listing-resources-using-the-dynamic-client

api.py

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+import os
+import random
+from flask import (
+    Flask,
+    request,
+    jsonify,
+)
+from flask_restful import reqparse, abort, Resource, Api
+from kubernetes import client as k8s_client
+from kubernetes.client import api_client
+from kubernetes import config, watch, dynamic
+from kubernetes.dynamic.exceptions import ResourceNotFoundError
+
+
+app = Flask(__name__)
+api = Api(app)
+
+
+if "KUBERNETES_SERVICE_HOST" in os.environ:
+    config.load_incluster_config()
+else:
+    config.load_kube_config()
+
+v1 = k8s_client.CoreV1Api()
+client = dynamic.DynamicClient(
+    api_client.ApiClient(configuration=config.load_kube_config())
+)
+custom_object_api = k8s_client.CustomObjectsApi()
+
+first_names = ['Ada', 'Bela', 'Cade', 'Dax', 'Eva', 'Fynn', 'Gia', 'Hugo', 'Ivy', 'Jax']
+last_names = ['Smith', 'Johnson', 'Williams', 'Jones', 'Brown', 'Davis', 'Miller', 'Wilson', 'Moore', 'Taylor']
+
+def create_name():
+    first_name = random.choice(first_names)
+    last_name = random.choice(last_names)
+    return f"{first_name}{last_name}"
+
+class DBCluster(Resource):
+    def get(self):
+        namespace = "test"
+        clusters = []
+        mariadb_resource = client.resources.get(api_version='k8s.mariadb.com/v1alpha1', kind='MariaDB')
+        mariadbs = mariadb_resource.get(namespace=namespace)
+        for mariadb in mariadbs.items:
+            name = mariadb.metadata.name
+            clusters.append({'name': name})
+        return clusters
+
+    def post(self):
+        namespace = "test"
+        name = random.choice(first_names).lower()
+        print(name )
+        mariadb = {
+            'apiVersion': 'k8s.mariadb.com/v1alpha1',
+            'kind': 'MariaDB',
+            'metadata': {
+                'name': name,
+                'namespace': namespace,
+            },
+            'spec': {
+                'rootPasswordSecretKeyRef': {
+                    'name': 'mariadb-root',
+                    'key': 'password',
+                    'generate': True
+                },
+                'username': 'mariadb',
+                'passwordSecretKeyRef': {
+                    'name': 'mariadb-password',
+                    'key': 'password',
+                    'generate': True
+                },
+                'port': 3306,
+                'storage': {
+                    'size': '1Gi',
+                }
+            }
+        }
+
+        mariadb_instance = custom_object_api.create_namespaced_custom_object(
+            group='k8s.mariadb.com',
+            version='v1alpha1',
+            namespace=namespace,
+            plural='mariadbs',
+            body=mariadb
+        )
+        return mariadb_instance
+
+class DBClusterDetails(Resource):
+    def get(self, name):
+        namespace = "test"
+        cluster = {}
+        mariadb_resource = client.resources.get(api_version='k8s.mariadb.com/v1alpha1', kind='MariaDB')
+        mariadbs = mariadb_resource.get(namespace=namespace)
+        for mariadb in mariadbs.items:
+            if mariadb.metadata.name == name:
+                for k,v in mariadb.metadata:
+                    print(k,v)
+
+                data = {
+                    "name": mariadb.metadata.name,
+                    "storage": mariadb.spec.storage.size,
+                }
+        return data
+
+
+
+api.add_resource(DBCluster, '/clusters')
+api.add_resource(DBClusterDetails, '/clusters/<string:name>')
+
+if __name__ == '__main__':
+    app.run(host='0.0.0.0', debug=True)

manage.py

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+from flask.cli import FlaskGroup
+
+from api import api
+
+cli = FlaskGroup(api)
+
+if __name__ == "__main__":
+    cli()

requirements.txt

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+aniso8601==9.0.1
+blinker==1.8.2
+cachetools==5.5.0
+certifi==2024.8.30
+charset-normalizer==3.3.2
+click==8.1.7
+durationpy==0.7
+Flask==3.0.3
+Flask-RESTful==0.3.10
+google-auth==2.35.0
+gunicorn==23.0.0
+idna==3.10
+itsdangerous==2.2.0
+Jinja2==3.1.4
+kubernetes==31.0.0
+MarkupSafe==2.1.5
+oauthlib==3.2.2
+packaging==24.1
+pyasn1==0.6.1
+pyasn1_modules==0.4.1
+python-dateutil==2.9.0.post0
+pytz==2024.2
+PyYAML==6.0.2
+requests==2.32.3
+requests-oauthlib==2.0.0
+rsa==4.9
+six==1.16.0
+urllib3==2.2.3
+websocket-client==1.8.0
+Werkzeug==3.0.4

wsgi.py

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+from api import app
+
+
+if __name__ == '__main__':
+    app.run()