Initial Commit

.gitignore

@@ -0,0 +1,142 @@
+# Project Specific
+output/*
+input/*
+templates/*
+
+# testing files
+test-*
+
+# VS and VSCode workspace
+*.code-workspace
+.vs/
+
+
+# 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/
+pip-wheel-metadata/
+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/
+
+# 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
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+.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/

Config_builder.py

@@ -0,0 +1,76 @@
+from jinja2 import Environment, FileSystemLoader
+import pprint
+import os
+
+from yaml import safe_load
+try:
+    from yaml import CLoader as Loader
+except ImportError:
+    from yaml import Loader
+
+def main(template_filepath,yaml_filepath,output_filepath):
+    
+    with open(yaml_filepath, 'r') as file:
+        devices = safe_load(file)
+    
+    template_path = os.path.dirname(os.path.abspath(template_filepath))
+    template_filename = os.path.basename(template_filepath)
+    
+    env = Environment(loader=FileSystemLoader(template_path))
+    template = env.get_template(template_filename)
+    
+    #Path("./output").mkdir(parents=True, exist_ok=True)
+
+    ### Specify output file - current write to script working directory
+    #filename = "./output/bdr_output.config"
+
+    ### open output file mode="w" for create/truncate
+    #output = open(filename, mode="w", encoding="utf-8")        
+    output = open(output_filepath, mode="w", encoding="utf-8")        
+
+    
+    for host, keys in devices.items():
+        device = "{"
+        for key, value in keys.items():
+            device += "'{}':'{}', ".format(key,value)
+        device += "'Hostname':'{}' }}".format(host)
+        #pprint.pprint(device)
+
+        device_dict = eval(device)
+        #pprint.pprint(device_dict)
+        content = template.render( device_dict )
+                
+        print('{}\n'.format(content))
+        output.write('{}\n'.format(content))
+    
+    return 0
+
+if __name__ == "__main__":
+
+    import argparse
+    
+    parser = argparse.ArgumentParser(description='Arguments for '
+                                                 'Config_builder.py')
+    parser.add_argument('-template',
+                        help='Template config with JINJA markup',
+                        required=True
+                        )
+
+    parser.add_argument('-yaml',
+                        help='YAML file with devices and config variables',
+                        required=True
+                        )
+
+    parser.add_argument('-output',
+                        help='Output File',
+                        required=True
+                        )
+
+    custom_args = parser.parse_known_args()[0]
+    
+    template = custom_args.template
+    yaml = custom_args.yaml
+    output = custom_args.output
+        
+    main(template,yaml,output)
+    

README.md

@@ -0,0 +1,9 @@
+# Playing with JINJA2
+
+This applet is intended to generate a JSON output snip for use with Grafana.
+The applet is statically configured to run 'count' interations on a JSON template with JINJA markup and output
+to a statically defined file in the scripts CWD.
+
+Next steps will be to modify the markup template to include the python
+instructions for iterating and the name of the output file instead of having the render script
+statically defining those values.

example_input.yaml

@@ -0,0 +1,4 @@
+lab-rt0003-bdr:
+  Lo0_IPv4: 10.10.10.10
+  Lo300_IPv4: 10.10.20.20
+  Collector: 10.10.30.10

example_template.config

@@ -0,0 +1,24 @@
+!!!!!!!!
+!! {{Hostname}}
+!!!!!!!!
+!
+vrf definition iONE_MGT
+ rd {{Lo0_IPv4}}:300
+ route-target export 22351:300
+ route-target import 22351:300
+ !
+ address-family ipv4
+ exit-address-family
+!
+interface Loopback300
+ description {{Hostname}}_lo300 - NetFlow telemetry source
+ vrf forwarding iONE_MGT
+ ip address {{Lo300_IPv4}} 255.255.255.255
+!
+router bgp 22351
+ address-family ipv4 vrf iONE_MGT
+  network {{Lo300_IPv4}} mask 255.255.255.255
+ exit-address-family
+!
+ip nat log translations flow-export v9 udp destination {{Collector}} 2056 vrf iONE_MGT source Loopback300
+!

requirements.txt

@@ -0,0 +1,3 @@
+Jinja2==3.1.4
+MarkupSafe==3.0.2
+PyYAML==6.0.2