initial 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
+
+# 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/#use-with-ide
+.pdm.toml
+
+# 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/
+
+# VS Code
+.vscode

README.md

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+A Ryu based SDN (Software defined Networking) controller to implement switch circuiting using SPF (Shortest Path First) algorithm.
+
+## Todo
+- [ ] implement and test `add_rules` and `get_rules` methods.
+- [ ] update the cost function along the path possibly in the add rules
+- [ ] make the adj list using `EventHostAdd` and `EventSwiwtchAdd` events

client.py

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+# http://10.250.11.109:8080/hosts
+import requests
+from ast import literal_eval
+import json
+from utils import cost
+
+# from utils import cost
+main_url = "http://10.250.11.109:8080"
+
+# host1:host2: host1->S1->S2->host2
+def display_paths(host, data):
+    for key, value in data.items():
+        if key == host:
+            continue
+        if key[0] == "h":
+            print(f"{host}-{key} :", end="")
+            for i in range(len(value) - 1):
+                print(f"{value[i]}->", end="")
+            print(f"{value[-1]}")
+    print()
+
+
+def pretify(data):
+    nodes_done = {}
+    # node1-node2 : cost
+    for k, v in data.items():
+        if nodes_done.get(k[0] + k[1], 0) == 1:
+            continue
+        print(k[0] + "-" + k[1] + " : " + str(cost(v[0], v[1])))
+        nodes_done[k[0] + k[1]] = 1
+        nodes_done[k[1] + k[0]] = 1
+
+
+def add_connection(main_url):
+    url = main_url + "/add"
+    print("1 MAC Based\n2 IP Based\n")
+    n = input("Enter your choice: ")
+    data = {"id_spec": "mac" if n == "1" else "ip", "src": "", "dst": "", "bw": 0}
+    while 1:
+        print("Enter host1 host2 bandwidth")
+        inp_str = input()
+        inp_list = inp_str.split()
+        if len(inp_list) < 3:
+            print("Invalid Input...\nTry Again!\n")
+            continue
+        host1 = inp_list[0]
+        host2 = inp_list[1]
+        try:
+            bw = float(inp_list[2])
+        except ValueError:
+            print("Invalid Input... Bandwidth must be a number\nTry Again!\n")
+            continue
+        data["id_spec"] = "gn"
+        data["src"] = host1
+        data["dst"] = host2
+        data["bw"] = bw
+        try:
+            response = requests.post(url, json=data)
+        except:
+            print("Connection Refused... Try Again Later!\n")
+            exit(0)
+
+        print(response.text)
+        res = response.json()
+        if len(res) == 0:
+            print("No possible path found\n")
+        else:
+            print(res)
+            print()
+
+
+def get_links(main_url):
+    url = main_url + "/links"
+    try:
+        response = requests.get(url)
+        res = response.json()
+        data = {literal_eval(k): v for k, v in json.loads(res).items()}
+    except requests.exceptions.ConnectionError:
+        print("Connection Refused... Try Again Later!\n")
+        exit(0)
+    pretify(data)
+
+
+# minimum cost from a particular host to all other hosts
+def getMinPath(main_url):
+    while 1:
+        host = input("Enter host name: ")
+        url = f"{main_url}/paths/{host}"
+        try:
+            response = requests.get(url)
+
+            # res=response.json()
+        except requests.exceptions.ConnectionError:
+            print("Connection Refused... Try Again Later!\n")
+            exit(0)
+        res = response.json()
+        display_paths(host, res)
+
+
+def get_rules(main_url):
+    switch_num = int(input("Enter switch number: "))
+    url = f"{main_url}/flows/{switch_num}"
+    try:
+        response = requests.get(url)
+
+        # res=response.json()
+    except requests.exceptions.ConnectionError:
+        print("Connection Refused... Try Again Later!\n")
+        exit(0)
+
+
+# getMinPath(main_url)
+
+add_connection(main_url)
+
+
+# links=get_links(main_url)
+# print(links)
+
+# get_links(main_url)
+
+# get_rules(main_url)