Add python profiler (#78)

* Setup profiler

* Add snakeviz

* Add profiler readme

* Whitespace

* order

Author: abelfodil

backend/.gitignore

@@ -4,3 +4,4 @@ __pycache__/
 *.onnx
 .DS_Store
 hmm_model/
+profiles/

backend/app.py

@@ -79,4 +79,5 @@ def analyze_sleep():
      allow_headers='Content-Type')
 app.config['CORS_HEADERS'] = 'Content-Type'
 
-serve(app, host='0.0.0.0', port=8080)
+if __name__ == '__main__':
+    serve(app, host='0.0.0.0', port=8080)

backend/profiler.py

@@ -0,0 +1,18 @@
+from waitress import serve
+from werkzeug.middleware.profiler import ProfilerMiddleware
+from pathlib import Path
+from os import path, makedirs
+import sys
+
+from app import app
+
+SCRIPT_PATH = Path(path.realpath(sys.argv[0])).parent
+PROFILES_PATH = SCRIPT_PATH / "profiles"
+
+if not path.exists(PROFILES_PATH):
+    makedirs(PROFILES_PATH)
+
+app = ProfilerMiddleware(app, stream=None, profile_dir="profiles")
+
+if __name__ == '__main__':
+    serve(app, host='0.0.0.0', port=8080)

backend/readme.md

@@ -17,7 +17,7 @@ source venv/bin/activate
 Install the required dependencies.
 
 ```bash
-pip install -r requirements.txt requirements-dev.txt
+pip install -r requirements.txt -r requirements-dev.txt
 ```
 
 If you are running on Linux or MacOS, you also have to install OpenMP with your package manager. It is a dependency of ONNX runtime, used to load our model and make predictions.
@@ -40,3 +40,11 @@ If you want to run the backend with hot reload enabled (you must have installed
 ```bash
 hupper -m waitress app:app
 ```
+
+## Profile application
+
+- Run `python profiler.py`
+
+- Send the request to the server
+
+- Open the profiler result contained in `profiles` folder with `snakeviz`

backend/requirements-dev.txt

@@ -1,2 +1,4 @@
 hupper==1.10.2
 pyinstaller==4.0
+snakeviz==2.1.0
+Werkzeug==1.0.1