Merge pull request #9 from JoshuaConcon/master

FOOD-2: Backend Initialization (+ Docker)
solves #2

utscfood-api/Dockerfile

@@ -0,0 +1,20 @@
+# Use an official Python runtime as a parent image
+FROM python:3.7-slim
+
+# Set the working directory to /app
+WORKDIR /app
+
+# Copy the current directory contents into the container at /app
+COPY . /app
+
+# Install any needed packages specified in requirements.txt
+RUN pip install --trusted-host pypi.python.org -r requirements.txt
+
+# Make port 80 available to the world outside this container
+EXPOSE 80
+
+# Define environment variable
+ENV NAME World
+
+# Run app.py when the container launches
+CMD ["python", "app.py"]

utscfood-api/README.md

@@ -1,7 +1 @@
 # utscfood-api
-
-## Installation
-
- 1. create the conda environment with `conda env create -f environment.yml`
- 2. activate the conda environment with `conda activate utscfood`
-

utscfood-api/app.py

@@ -0,0 +1,24 @@
+from flask import Flask
+from redis import Redis, RedisError
+import os
+import socket
+
+# Connect to Redis
+redis = Redis(host="redis", db=0, socket_connect_timeout=2, socket_timeout=2)
+
+app = Flask(__name__)
+
+@app.route("/")
+def hello():
+    try:
+        visits = redis.incr("counter")
+    except RedisError:
+        visits = "<i>cannot connect to Redis, counter disabled</i>"
+
+    html = "<h3>Hello {name}!</h3>" \
+           "<b>Hostname:</b> {hostname}<br/>" \
+           "<b>Visits:</b> {visits}"
+    return html.format(name=os.getenv("NAME", "world"), hostname=socket.gethostname(), visits=visits)
+
+if __name__ == "__main__":
+    app.run(host='0.0.0.0', port=80)

utscfood-api/requirements.txt

@@ -0,0 +1,2 @@
+Flask
+Redis

utscfood-api/start.sh

@@ -0,0 +1,8 @@
+# !/bin/sh
+
+# runs on port 4000
+readonly HOST_PORT=4000
+readonly CONTAINER_NAME=utscfood
+
+docker build --tag=${CONTAINER_NAME} .
+docker run -p ${HOST_PORT}:80 ${CONTAINER_NAME}