Add y1 DMC code.

.gitignore

+*~
+*__pycache__*
+.vscode
+docs/_build

Dockerfile

+FROM python:3.9.12-bullseye
+
+COPY . /opt/mc_openapi
+
+RUN useradd -mU mc
+USER mc
+ENV PATH="/home/mc/.local/bin:${PATH}"
+RUN pip install -r /opt/mc_openapi/requirements.txt
+WORKDIR /opt/mc_openapi
+
+CMD ["uwsgi", "--http", ":80", "--yaml", "uwsgi_config.yaml"]

README.md

+# PIACERE Model Checker REST API server
+
+This project is packaged with [Poetry](https://python-poetry.org/).
+
+## Build and Run
+
+Build with
+```sh
+poetry install
+```
+then run with
+```sh
+poetry run python -m mc_openapi
+```
+
+Run tests with:
+```sh
+poetry run python -m pytest
+```
+
+## Run with uWSGI
+
+The project may be run with [uWSGI](https://uwsgi-docs.readthedocs.io/) as follows:
+```sh
+uwsgi --http :8080 --yaml uwsgi_config.yaml
+```
+
+## Run with Docker
+
+First, build the docker image with the usual
+```sh
+docker build -t wp4/dmc .
+```
+And then run it with
+```sh
+docker run -d wp4/dmc
+```
+The uWSGI server will be running and listening on port 80 of the container.
+
+
+## REST APIs
+
+The OpenAPI definition of the REST APIs is in `mc_openapi/openapi/model_checker.yaml`.
+
+The APIs can also be browsed with [Swagger UI](https://swagger.io/tools/swagger-ui/) by appending `/ui/` to the API HTTP address.
+
+For APIs usage examples, you may look into the tests, in `tests/test_mc_openapi.py`.
+Two DOML examples in XMI format are sent to the server.
+One of them is correct (`tests/doml/nginx-openstack_v2.domlx`), and the server answers with `"sat"` (meaning the requirements are satisfied), and the other one contains an error (`tests/doml/nginx-openstack_v2_wrong.domlx`), so the server answers with `"unsat"`.
+
+**Note:** for the time being, the `model` field of the POST request's body accepts any XML object. This will be changed to the DOML XMI schema when possible.

dev-requirements.txt

+appnope==0.1.3 ; python_version >= "3.9" and python_version < "4.0" and platform_system == "Darwin" or python_version >= "3.9" and python_version < "4.0" and sys_platform == "darwin"
+asttokens==2.0.5 ; python_version >= "3.9" and python_version < "4.0"
+atomicwrites==1.4.1 ; python_version >= "3.9" and python_version < "4.0" and sys_platform == "win32"
+attrs==22.1.0 ; python_version >= "3.9" and python_version < "4.0"
+backcall==0.2.0 ; python_version >= "3.9" and python_version < "4.0"
+certifi==2022.6.15 ; python_version >= "3.9" and python_version < "4"
+cffi==1.15.1 ; python_version >= "3.9" and python_version < "4.0" and implementation_name == "pypy"
+charset-normalizer==2.1.0 ; python_version >= "3.9" and python_version < "4"
+colorama==0.4.5 ; python_version >= "3.9" and python_version < "4.0" and sys_platform == "win32" or python_version >= "3.9" and python_version < "4.0" and platform_system == "Windows"
+colorful==0.5.4 ; python_version >= "3.9" and python_version < "4.0"
+debugpy==1.6.2 ; python_version >= "3.9" and python_version < "4.0"
+decorator==5.1.1 ; python_version >= "3.9" and python_version < "4.0"
+entrypoints==0.4 ; python_version >= "3.9" and python_version < "4.0"
+executing==0.9.1 ; python_version >= "3.9" and python_version < "4.0"
+idna==3.3 ; python_version >= "3.9" and python_version < "4"
+iniconfig==1.1.1 ; python_version >= "3.9" and python_version < "4.0"
+ipykernel==6.15.1 ; python_version >= "3.9" and python_version < "4.0"
+ipython==8.4.0 ; python_version >= "3.9" and python_version < "4.0"
+jedi==0.18.1 ; python_version >= "3.9" and python_version < "4.0"
+jupyter-client==7.3.4 ; python_version >= "3.9" and python_version < "4.0"
+jupyter-core==4.11.1 ; python_version >= "3.9" and python_version < "4.0"
+matplotlib-inline==0.1.3 ; python_version >= "3.9" and python_version < "4.0"
+nest-asyncio==1.5.5 ; python_version >= "3.9" and python_version < "4.0"
+packaging==21.3 ; python_version >= "3.9" and python_version < "4.0"
+parso==0.8.3 ; python_version >= "3.9" and python_version < "4.0"
+pexpect==4.8.0 ; python_version >= "3.9" and python_version < "4.0" and sys_platform != "win32"
+pickleshare==0.7.5 ; python_version >= "3.9" and python_version < "4.0"
+pluggy==1.0.0 ; python_version >= "3.9" and python_version < "4.0"
+prettyprinter==0.18.0 ; python_version >= "3.9" and python_version < "4.0"
+prompt-toolkit==3.0.30 ; python_version >= "3.9" and python_version < "4.0"
+psutil==5.9.1 ; python_version >= "3.9" and python_version < "4.0"
+ptyprocess==0.7.0 ; python_version >= "3.9" and python_version < "4.0" and sys_platform != "win32"
+pure-eval==0.2.2 ; python_version >= "3.9" and python_version < "4.0"
+py==1.11.0 ; python_version >= "3.9" and python_version < "4.0"
+pycparser==2.21 ; python_version >= "3.9" and python_version < "4.0" and implementation_name == "pypy"
+pygments==2.12.0 ; python_version >= "3.9" and python_version < "4.0"
+pyparsing==3.0.9 ; python_version >= "3.9" and python_version < "4.0"
+pytest==6.2.5 ; python_version >= "3.9" and python_version < "4.0"
+python-dateutil==2.8.2 ; python_version >= "3.9" and python_version < "4.0"
+pywin32==304 ; sys_platform == "win32" and platform_python_implementation != "PyPy" and python_version >= "3.9" and python_version < "4.0"
+pyzmq==23.2.0 ; python_version >= "3.9" and python_version < "4.0"
+requests==2.28.1 ; python_version >= "3.9" and python_version < "4"
+six==1.16.0 ; python_version >= "3.9" and python_version < "4.0"
+stack-data==0.3.0 ; python_version >= "3.9" and python_version < "4.0"
+toml==0.10.2 ; python_version >= "3.9" and python_version < "4.0"
+tornado==6.2 ; python_version >= "3.9" and python_version < "4.0"
+traitlets==5.3.0 ; python_version >= "3.9" and python_version < "4.0"
+urllib3==1.26.11 ; python_version >= "3.9" and python_version < "4"
+wcwidth==0.2.5 ; python_version >= "3.9" and python_version < "4.0"

docs/Makefile

+# Minimal makefile for Sphinx documentation
+#
+
+# You can set these variables from the command line, and also
+# from the environment for the first two.
+SPHINXOPTS    ?=
+SPHINXBUILD   ?= sphinx-build
+SOURCEDIR     = .
+BUILDDIR      = _build
+
+# Put it first so that "make" without argument is like "make help".
+help:
+	@$(SPHINXBUILD) -M help "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)
+
+.PHONY: help Makefile
+
+# Catch-all target: route all unknown targets to Sphinx using the new
+# "make mode" option.  $(O) is meant as a shortcut for $(SPHINXOPTS).
+%: Makefile
+	@$(SPHINXBUILD) -M $@ "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)

docs/conf.py

+# Configuration file for the Sphinx documentation builder.
+#
+# This file only contains a selection of the most common options. For a full
+# list see the documentation:
+# https://www.sphinx-doc.org/en/master/usage/configuration.html
+
+# -- Path setup --------------------------------------------------------------
+
+# If extensions (or modules to document with autodoc) are in another directory,
+# add these directories to sys.path here. If the directory is relative to the
+# documentation root, use os.path.abspath to make it absolute, like shown here.
+#
+# import os
+# import sys
+# sys.path.insert(0, os.path.abspath('.'))
+import sphinx_rtd_theme
+
+
+# -- Project information -----------------------------------------------------
+
+project = 'DOML Model Checker'
+copyright = '2022, Michele Chiari and Michele De Pascalis'
+author = 'Michele Chiari and Michele De Pascalis'
+
+# The full version, including alpha/beta/rc tags
+release = '1.0.0'
+
+
+# -- General configuration ---------------------------------------------------
+
+# Add any Sphinx extension module names here, as strings. They can be
+# extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
+# ones.
+extensions = [
+    'sphinx_rtd_theme'
+]
+
+# Add any paths that contain templates here, relative to this directory.
+templates_path = []
+
+# List of patterns, relative to source directory, that match files and
+# directories to ignore when looking for source files.
+# This pattern also affects html_static_path and html_extra_path.
+exclude_patterns = ['_build', 'Thumbs.db', '.DS_Store']
+
+
+# -- Options for HTML output -------------------------------------------------
+
+# The theme to use for HTML and HTML Help pages.  See the documentation for
+# a list of builtin themes.
+#
+html_theme = 'sphinx_rtd_theme'
+
+# Add any paths that contain custom static files (such as style sheets) here,
+# relative to this directory. They are copied after the builtin static files,
+# so a file named "default.css" will overwrite the builtin "default.css".
+html_static_path = []

docs/index.rst

+.. DOML Model Checker documentation master file, created by
+   sphinx-quickstart on Mon Jul 11 15:00:34 2022.
+   You can adapt this file completely to your liking, but it should at least
+   contain the root `toctree` directive.
+
+DOML Model Checker's documentation
+==================================
+
+The DOML Model Checker is a component of the `PIACERE`_ framework
+in charge of checking the correctness and consistency of `DOML`_ models.
+
+
+.. toctree::
+   :maxdepth: 2
+   :caption: Contents:
+
+   installation
+   usage
+   requirements
+   restapis
+
+..
+   Indices and tables
+   ==================
+
+.. * :ref:`genindex`
+   * :ref:`modindex`
+   * :ref:`search`
+
+
+This project has received funding from the European Union's Horizon 2020
+research and innovation programme under grant agreement No. 101000162.
+
+
+.. _PIACERE: https://www.piacere-project.eu/
+.. _DOML: https://www.piacere-doml.deib.polimi.it/

docs/installation.rst

+Installation
+============
+
+The DOML Model Checker receives user inputs through its REST APIs.
+In this guide we illuestrate saveral ways of setting up the server for these APIs.
+
+
+Build and run locally for testing
+---------------------------------
+
+This project is packaged with `Poetry`_, which we assume you have already
+`installed <https://python-poetry.org/docs/#installation>`_ into your system.
+
+
+Build with::
+
+  poetry install
+
+then run with::
+
+  poetry run python -m mc_openapi
+
+this command serves the APIs through a `Flask`_ instance,
+which is suitable for testing, but not recommended for production.
+You may read the API specification generated by `Swagger-UI`_ by
+pointing your browser to http://127.0.0.1:8080/ui/.
+
+
+Then, run tests with::
+
+  poetry run python -m pytest
+
+
+Run locally with uWSGI
+----------------------
+
+The project may be run with `uWSGI`_,
+which is better-suited for production environments, as follows::
+
+  uwsgi --http :8080 -w mc_openapi.app_config -p 4
+
+
+Run with Docker
+---------------
+
+The best way of deploying the DOML Model Checker is by using `Docker`_.
+
+First, build the docker image with the usual::
+
+  docker build -t wp4/dmc .
+
+And then run it with::
+
+  docker run -d wp4/dmc
+
+The uWSGI server will be running and listening on port 80 of the container.
+
+
+Building the Documentation
+--------------------------
+
+The documentation has been written in `Sphinx`_.
+
+To build it, type::
+
+  poetry shell
+
+and then::
+
+  cd docs
+  make html
+
+The documentation will be generated in ``docs/_build``.
+
+
+.. _Poetry: https://python-poetry.org/
+.. _Flask: https://flask.palletsprojects.com/
+.. _Swagger-UI: https://swagger.io/tools/swagger-ui/
+.. _uWSGI: https://uwsgi-docs.readthedocs.io/
+.. _Docker: https://www.docker.com/
+.. _Sphinx: https://www.sphinx-doc.org/

docs/make.bat

+@ECHO OFF
+
+pushd %~dp0
+
+REM Command file for Sphinx documentation
+
+if "%SPHINXBUILD%" == "" (
+	set SPHINXBUILD=sphinx-build
+)
+set SOURCEDIR=.
+set BUILDDIR=_build
+
+%SPHINXBUILD% >NUL 2>NUL
+if errorlevel 9009 (
+	echo.
+	echo.The 'sphinx-build' command was not found. Make sure you have Sphinx
+	echo.installed, then set the SPHINXBUILD environment variable to point
+	echo.to the full path of the 'sphinx-build' executable. Alternatively you
+	echo.may add the Sphinx directory to PATH.
+	echo.
+	echo.If you don't have Sphinx installed, grab it from
+	echo.https://www.sphinx-doc.org/
+	exit /b 1
+)
+
+if "%1" == "" goto help
+
+%SPHINXBUILD% -M %1 %SOURCEDIR% %BUILDDIR% %SPHINXOPTS% %O%
+goto end
+
+:help
+%SPHINXBUILD% -M help %SOURCEDIR% %BUILDDIR% %SPHINXOPTS% %O%
+
+:end
+popd

docs/requirements.rst

+Checked Requirements
+====================
+
+The DOML Model Checker verifies DOML models against a collection of requirements
+devised to highlight the most common mistakes made by users when specifying cloud deployments.
+Here we list and describe such requirements.
+
+
+VM Network Interfaces
+---------------------
+
+  All virtual machines must be connected to at least one network interface.
+
+Virtual machines can communicate with other components of a deployment or with external clients
+only through an appropriately configured network.
+this check makes sure no virtual machines are isolated.
+
+
+Concretization of Software Interfaces
+-------------------------------------
+
+  All software packages can see the interfaces they need through a common network.
+
+This check makes sure all exposed and consumed software interfaces at the application layer level
+have been actually concretized through a network connection that allows the involved components
+to communicate.
+
+
+Duplicated Interfaces
+---------------------
+
+  There are no duplicated interfaces.
+
+Checks whether two or more interfaces have been assigned the same IP address in the same network.
+
+
+Deployed Software Components
+----------------------------
+
+  All software components have been deployed to some node.
+
+Makes sure that all software components specified in the application layer have been
+associated to at least one node in the abstract infrastructure layer
+through the currently active deployment.
+
+
+Concretization of Abstract Infrastructure
+-----------------------------------------
+
+  All abstract infrastructure elements are mapped to an element in the active concretization.
+
+Makes sure all abstract infrastructure are concretized by the currently active concretization layer.

docs/restapis.rst

+REST APIs
+=========
+
+The `OpenAPI`_ definition of the REST APIs is in ``mc_openapi/openapi/model_checker.yaml``.
+
+The APIs can also be browsed with `Swagger UI`_ by appending ``/ui/`` to the APIs' HTTP address.
+
+For APIs usage examples, you may look into the tests, in ``tests/test_mc_openapi.py``.
+Some DOML examples in XMI format are sent to the server.
+One of them is correct (``tests/doml/nginx-openstack_v2.domlx``),
+and the server answers with ``"sat"`` (meaning the requirements are satisfied),
+and the other one contains an error (``tests/doml/nginx-openstack_v2_wrong.domlx``),
+so the server answers with ``"unsat"``.
+
+
+.. _OpenAPI: https://www.openapis.org/
+.. _Swagger UI: https://swagger.io/tools/swagger-ui/

docs/usage.rst

+Usage through the PIACERE IDE
+=============================
+
+
+Invoking the DOML Model Checker from the PIACERE IDE
+-----------------------------------------------------
+
+The DOML Model Checker is usually invoked from the PIACERE IDE.
+It expects a DOML file in XMI format as its input,
+so plain DOML files must be manually converted.
+The workflow is as follows:
+
+1. Right-click the DOML file to be checked in the IDE's left sidebar;
+2. In the context-menu, select *Piacere* -> *Generate DOMLX Model*;
+3. Pick a name for the .domlx file to be generated and click OK;
+4. Right-click the newly-generated .domlx file;
+5. In the context-menu, select *Piacere* -> *Validate DOML*.
+
+
+After some time, the IDE will report the model checker's results in a new window.
+
+Normally, verification can have two outcomes:
+
+* *Your requirements are SATISFIED*:
+  this means your DOML model passed all the standard checks for common mistakes;
+* *Your requirements are UNSATISFIED*:
+  this means the model checker has found a problem in your DOML model.
+  A description of the problem follows.
+
+In case of errors in the verification process, the IDE reports them in a new window,
+together with a description.
+A common error is the following:
+
+  The supplied DOMLX model is malformed or its DOML version is unsupported.
+
+This often happens because of a mismatch between the DOML version supported by the IDE
+and the one supported by the model checker.
+
+
+Settings
+--------
+
+The only model-checker-related settings you may customize from the PIACERE IDE
+are the endpoint connection data.
+
+Select the *Preferences* entry of the *Window* menu of the PIACERE IDE,
+and then choose *Piacere* -> *Model Checker Preferences*.
+
+Here you may enter the endpoint address and port, which is useful in case you want to
+run the DOML Model Checker locally, instead of using the official deployment.

mc_openapi/__init__.py

+__version__ = '0.2.0'

mc_openapi/__main__.py

+#!/usr/bin/env python3
+
+from mc_openapi.app_config import app
+
+app.run(port=8080)

mc_openapi/app_config.py

+import connexion
+
+app = connexion.App(__name__, specification_dir='openapi/')
+app.add_api('model_checker.yaml')
+
+application = app.app

mc_openapi/assets/doml_meta.yaml

+commons:
+    DOMLElement:
+        attributes:
+            name:
+                type: String
+                multiplicity: "0..1"
+            description:
+                type: String
+                multiplicity: "0..1"
+        associations:
+            annotations:
+                class: commons_Property
+                multiplicity: "0..*"
+    Property:
+        attributes:
+            key:
+                type: String
+                multiplicity: "0..1"
+        associations:
+            reference:
+                class: commons_DOMLElement
+                multiplicity: "0..1"
+    IProperty:
+        superclass: commons_Property
+        attributes:
+            value:
+                type: Integer
+                multiplicity: "0..1"
+    SProperty:
+        superclass: commons_Property
+        attributes:
+            value:
+                type: String
+                multiplicity: "0..1"
+    FProperty:
+        superclass: commons_Property
+        attributes:
+            value:
+                type: String
+                multiplicity: "0..1"
+    BProperty:
+        superclass: commons_Property
+        attributes:
+            value:
+                type: Boolean
+                multiplicity: "0..1"
+    Configuration:
+        superclass: commons_DOMLElement
+        associations:
+            deployments:
+                class: commons_Deployment
+                multiplicity: "0..*"
+    Deployment:
+        associations:
+            component:
+                class: application_ApplicationComponent
+                multiplicity: "1"
+            node:
+                class: infrastructure_InfrastructureElement
+                multiplicity: "1"
+
+application:
+    ApplicationLayer:
+        superclass: commons_DOMLElement
+        associations:
+            components:
+                class: application_ApplicationComponent
+                multiplicity: "0..*"
+    ApplicationComponent:
+        superclass: commons_DOMLElement
+    SoftwareComponent:
+        superclass: application_ApplicationComponent
+        attributes:
+            isPersistent:
+                type: Boolean
+                multiplicity: "1"
+                default: false
+            licenseCost:
+                type: String
+                multiplicity: "0..1"
+            configFile:
+                type: String
+                multiplicity: "0..1"
+        associations:
+            exposedInterfaces:
+                class: application_SoftwareInterface
+                mutiplicity: "0..*"
+            consumedInterfaces:
+                class: application_SoftwareInterface
+                mutiplicity: "0..*"
+    SaaS:
+        superclass: application_ApplicationComponent
+        attributes:
+            licenseCost:
+                type: String
+                multiplicity: "0..1"
+        associations:
+            exposedInterfaces:
+                class: application_SoftwareInterface
+                mutiplicity: "0..*"
+    SoftwareInterface:
+        superclass: application_ApplicationComponent
+        attributes:
+            endPoint:
+                type: String
+                multiplicity: "0..1"
+    DBMS:
+        superclass: application_SoftwareComponent
+    SaaSDBMS:
+        superclass: application_SaaS
+
+infrastructure:
+    InfrastructureLayer:
+        superclass: commons_DOMLElement
+        associations:
+            nodes:
+                class: infrastructure_ComputingNode
+                multiplicity: "0..*"
+            networks:
+                class: infrastructure_Network
+                multiplicity: "0..*"
+            generators:
+                class: infrastructure_ComputingNodeGenerator
+                multiplicity: "0..*"
+            storages:
+                class: infrastructure_Storage
+                multiplicity: "0..*"
+            faas:
+                class: infrastructure_FunctionAsAService
+                multiplicity: "0..*"
+            credentials:
+                class: infrastructure_Credentials
+                multiplicity: "0..*"
+            groups:
+                class: infrastructure_ComputingGroup
+                multiplicity: "0..*"
+    InfrastructureElement:
+        superclass: commons_DOMLElement
+    ComputingNode:
+        superclass: infrastructure_InfrastructureElement
+        attributes:
+            architecture: 
+                type: String 
+                multiplicity: "0..1"
+            os: 
+                type: String 
+                multiplicity: "0..1"
+            memory: 
+                type: String 
+                multiplicity: "0..1"
+            storage: 
+                type: String 
+                multiplicity: "0..1"
+            cpu: 
+                type: String 
+                multiplicity: "0..1"
+            cost: 
+                type: Integer  # in cents 
+                multiplicity: "0..1"
+        associations:
+            ifaces:
+                class: infrastructure_NetworkInterface
+                multiplicity: "0..*"
+            location:
+                class: infrastructure_Location
+                multiplicity: "0..1"
+            credentials:
+                class: infrastructure_Credentials
+                multiplicity: "0..1"
+            group:
+                class: infrastructure_ComputingGroup
+                multiplicity: "0..1"
+                inverse_of: infrastructure_ComputingGroup::groupedNodes
+    PhysicalComputingNode:
+        superclass: infrastructure_ComputingNode
+    VirtualMachine:
+        superclass: infrastructure_ComputingNode
+        attributes:
+            sizeDescription:
+                type: String
+                multiplicity: "0..1"
+        associations:
+            generatedFrom:
+                class: infrastructure_VMImage
+                multiplicity: "0..1"
+    Location:
+        superclass: commons_DOMLElement
+        attributes:
+            region:
+                type: String
+                multiplicity: "0..1"
+            zone:
+                type: String
+                multiplicity: "0..1"
+    Container:
+        superclass: infrastructure_ComputingNode
+        associations:
+            generatedFrom:
+                class: infrastructure_ContainerImage
+                multiplicity: "0..1"
+            hosts:
+                class: infrastructure_ComputingNode
+                multiplicity: "0..*"
+    ComputingNodeGenerator:
+        superclass: commons_DOMLElement
+        attributes:
+            uri:
+                type: String
+                multiplicity: "0..1"
+            kind:
+                type: GeneratorKind  # enum { SCRIPT, IMAGE }
+    VMImage:
+        superclass: infrastructure_ComputingNodeGenerator
+        associations:
+            generatedVMs:
+                class: infrastructure_VirtualMachine
+                multiplicity: "0..*"
+                inverse_of: infrastructure_VirtualMachine::generatedFrom
+    ContainerImage:
+        superclass: infrastructure_ComputingNodeGenerator
+        associations:
+            generatedContainers:
+                class: infrastructure_Container
+                multiplicity: "0..*"
+                inverse_of: infrastructure_Container::generatedFrom
+    AutoScalingGroup:
+        superclass: infrastructure_ComputingNode
+        attributes:
+            min:
+                type: Integer
+                multiplicity: "0..1"
+            max:
+                type: Integer
+                multiplicity: "0..1"
+            loadBalancer:
+                type: String
+                multiplicity: "0..1"
+        associations:
+            machineDefinition:
+                class: infrastructure_VirtualMachine
+                multiplicity: "1"
+            deploymentNetwork:
+                class: infrastructure_Network
+                multiplicity: "0..1"
+            securityGroup:
+                class: infrastructure_SecurityGroup
+                multiplicity: "0..1"
+    Storage:
+        superclass: infrastructure_InfrastructureElement
+        attributes:
+            label:
+                type: String
+                multiplicity: "0..1"
+            size:
+                type: Integer  # in MBs
+                multiplicity: "0..1"
+            cost: 
+                type: Integer  # in cents 
+                multiplicity: "0..1"
+        associations:
+            ifaces:
+                class: infrastructure_NetworkInterface
+                multiplicity: "0..*"
+    FunctionAsAService:
+        superclass: infrastructure_InfrastructureElement
+        attributes:
+            cost:
+                type: Integer  # in cents
+                multiplicity: "0..1"
+        associations:
+            ifaces:
+                class: infrastructure_NetworkInterface
+                multiplicity: "0..*"
+    Network:
+        superclass: commons_DOMLElement
+        attributes:
+            protocol:
+                type: String
+                multiplicity: "0..1"
+            address_lb:
+                type: Integer
+                multiplicity: "0..1"
+            address_ub:
+                type: Integer
+                multiplicity: "0..1"
+        associations:
+            connectedIfaces:
+                class: infrastructure_NetworkInterface
+                multiplicity: "0..*"
+                inverse_of: infrastructure_NetworkInterface::belongsTo
+            igws:
+                class: infrastructure_InternetGateway
+                multiplicity: "0..*"
+    VPC:
+        superclass: infrastructure_Network
+        associations:
+            subnets:
+                class: infrastructure_Subnet
+                multiplicity: "0..*"
+    Subnet:
+        superclass: infrastructure_Network
+        associations:
+            connectedTo:
+                class: infrastructure_Network
+                multiplicity: "0..1"
+    NetworkInterface:
+        superclass: infrastructure_InfrastructureElement
+        attributes:
+            endPoint:
+                type: Integer
+                multiplicity: "0..1"
+            speed:
+                type: String
+                multiplicity: "0..1"
+        associations:
+            belongsTo:
+                class: infrastructure_Network
+                multiplicity: "0..1" # This should be "1", but it would break InternetGateway
+            associated:
+                class: infrastructure_SecurityGroup
+                multiplicity: "0..1" # TODO: try putting this to 1 and see why it fails
+    InternetGateway:
+        superclass: infrastructure_NetworkInterface
+    ComputingGroup:
+        superclass: commons_DOMLElement
+        associations:
+            groupedNodes:
+                class: infrastructure_ComputingNode
+                multiplicity: "0..*"
+                inverse_of: infrastructure_ComputingNode::group
+    SecurityGroup:
+        superclass: infrastructure_ComputingGroup
+        associations:
+            rules:
+                class: infrastructure_Rule
+                multiplicity: "0..*"
+            ifaces:
+                class: infrastructure_NetworkInterface
+                multiplicity: "0..*"
+                inverse_of: infrastructure_NetworkInterface::associated
+    Rule:
+        superclass: commons_DOMLElement
+        attributes:
+            kind:
+                type: String
+                multiplicity: "1"
+            protocol:
+                type: String
+                multiplicity: "1"
+            fromPort:
+                type: Integer
+                multiplicity: "1"
+            toPort:
+                type: Integer
+                multiplicity: "1"
+            cidr:
+                type: String
+                multiplicity: "0..*"
+    Credentials:
+        superclass: commons_DOMLElement
+    KeyPair:
+        superclass: infrastructure_Credentials
+        attributes:
+            user:
+                type: String
+                multiplicity: "0..1"
+            keyfile:
+                type: String
+                multiplicity: "0..1"
+            algorithm:
+                type: String
+                multiplicity: "0..1"
+            bits:
+                type: Integer
+                multiplicity: "0..1"
+    UserPass:
+        superclass: infrastructure_Credentials
+        attributes:
+            username:
+                type: String
+                multiplicity: "1"
+            password:
+                type: String
+                multiplicity: "1"
+    SwarmRole:
+        superclass: commons_DOMLElement
+        attributes:
+            kind:
+                type: String
+                multiplicity: "1"
+        associations:
+            nodes:
+                class: infrastructure_ComputingNode
+                multiplicity: "0..*"
+    Swarm:
+        superclass: infrastructure_ComputingGroup
+        associations:
+            roles:
+                class: infrastructure_SwarmRole
+                multiplicity: "0..*"
+    ExtInfrastructureElement:
+        superclass: infrastructure_InfrastructureElement
+
+concrete:
+    ConcreteInfrastructure:
+        superclass: commons_DOMLElement
+        associations:
+            providers:
+                class: concrete_RuntimeProvider
+                multiplicity: "0..*"
+    ConcreteElement:
+        superclass: commons_DOMLElement
+        attributes:
+            configurationScript:
+                type: String
+                multiplicity: "0..1"
+    RuntimeProvider:
+        superclass: commons_DOMLElement
+        associations:
+            vms:
+                class: concrete_VirtualMachine
+                multiplicity: "0..*"
+            vmImages:
+                class: concrete_VMImage
+                multiplicity: "0..*"
+            containerImages:
+                class: concrete_ContainerImage
+                multiplicity: "0..*"
+            networks:
+                class: concrete_Network
+                multiplicity: "0..*"
+            storages:
+                class: concrete_Storage
+                multiplicity: "0..*"
+            faas:
+                class: concrete_FunctionAsAService
+                multiplicity: "0..*"
+            group:
+                class: concrete_ComputingGroup
+                multiplicity: "0..*"
+    VirtualMachine:
+        superclass: concrete_ConcreteElement
+        associations:
+            maps:
+                class: infrastructure_VirtualMachine
+                multiplicity: "0..1"
+    VMImage:
+        superclass: concrete_ConcreteElement
+        associations:
+            maps:
+                class: infrastructure_VMImage
+                multiplicity: "0..1"
+    ContainerImage:
+        superclass: concrete_ConcreteElement
+        associations:
+            maps:
+                class: infrastructure_ContainerImage
+                multiplicity: "0..1"
+    Network:
+        superclass: concrete_ConcreteElement
+        associations:
+            maps:
+                class: infrastructure_Network
+                multiplicity: "0..1"
+    Storage:
+        superclass: concrete_ConcreteElement
+        associations:
+            maps:
+                class: infrastructure_Storage
+                multiplicity: "0..1"
+    FunctionAsAService:
+        superclass: concrete_ConcreteElement
+        associations:
+            maps:
+                class: infrastructure_FunctionAsAService
+                multiplicity: "0..1"
+    ComputingGroup:
+        superclass: concrete_ConcreteElement
+        associations:
+            maps:
+                class: infrastructure_AutoScalingGroup
+                multiplicity: "1"

mc_openapi/bytes_uri.py

+from pyecore.resources import URI
+from io import BytesIO
+
+class BytesURI(URI):
+    def __init__(self, uri, bytes=None):
+        super(BytesURI, self).__init__(uri)
+        if bytes is not None:
+            self.__stream = BytesIO(bytes)
+
+    def getvalue(self):
+        return self.__stream.getvalue()
+
+    def create_instream(self):
+        return self.__stream
+
+    def create_outstream(self):
+        self.__stream = BytesIO()
+        return self.__stream