simple app readme next

ranman · Mar 27, 2018 · 50ce1f4 · 50ce1f4
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diff --git a/backend/Dockerfile b/backend/Dockerfile
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+FROM python:3.6
+WORKDIR /app
+COPY ./requirements.txt /app/requirements.txt
+RUN pip install --no-cache-dir -r requirements.txt
+COPY . /app
+EXPOSE 5000
+ENTRYPOINT ["python"]
+CMD ["app.py"]
diff --git a/backend/app.py b/backend/app.py
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+from flask import Flask, render_template
+import socket
+import requests
+import boto3
+app = Flask(__name__)
+servicediscovery = boto3.client("servicediscovery")
+
+
+@app.route("/ping")
+def ping():
+    return "", 200
+
+
+@app.route("/")
+def hello():
+    resp = servicediscovery.list_services(
+        Filters=[{'Name': 'NAMESPACE_ID', 'Values': ['SUPER_COOL_VALUE_HERE']}]
+    )
+    service_obj = [service for service in resp.get('Services', []) if service['Name'] != "backend"]
+    services = []
+    for service in service_obj:
+        services.append({
+            'name': service['Name'],
+            'addr': socket.gethostbyname(service['Name']+".corp"),
+            'num_hosts': len(servicediscovery.list_instances(ServiceId=service['Id'])['Instances']),
+            'text': requests.get("http://"+service['Name']+".corp").content.decode("utf-8")
+        })
+    return render_template("index.html", services=services)
+
+if __name__ == "__main__":
+    app.run(debug=True, host='0.0.0.0')
diff --git a/backend/requirements.txt b/backend/requirements.txt
@@ -0,0 +1,3 @@
+flask
+requests
+boto3
diff --git a/backend/static/dust_scratches.png b/backend/static/dust_scratches.png
diff --git a/backend/static/favicon.ico b/backend/static/favicon.ico
diff --git a/backend/static/sd.png b/backend/static/sd.png
diff --git a/backend/templates/index.html b/backend/templates/index.html
@@ -0,0 +1,46 @@
+<!DOCTYPE html>
+<html>
+<head>
+<link rel="shortcut icon" href="{{ url_for('static', filename='favicon.ico') }}">
+<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
+<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
+<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
+<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script>
+<style>
+body { 
+    background: url({{ url_for('static', filename='dust_scratches.png') }}) repeat 0 0;
+}
+</style>
+	<title>Service Discovery</title>
+</head>
+<body>
+	<div class="container">
+		<div class="row justify-content-md-center">
+			<h1 class="display">Amazon ECS Service Discovery</h1>
+		</div>
+		<div>
+			<img src="{{url_for('static', filename='sd.png')}}" class="img-fluid" alt="architecture diagram">
+		</div>
+		<div class="row justify-content-md-center">
+			<div class="col">
+				<p>This is a short demo of service discovery in <a href="https://aws.amazon.com/ecs/">Amazon ECS</a>.</p>
+
+				<p>You can find more details in the <a href="https://aws.amazon.com/blogs/aws/amazon-ecs-service-discovery/">blog post</a>.</p>
+			</div>
+		</div>
+		<hr>
+		<div class="row justify-content-md-center">
+			<div class="col">
+				<p>These are the services I found, if you refresh the page the IPs of the workers should change:</p>
+				<ul>
+				{% for service in services %}
+					<li><h2>{{service.name}} - {{service.addr}}</h2><strong>Worker Response:</strong>{{service.text|safe}}
+						<p>Chose one out of {{service.num_hosts}} posible hosts</p>
+					</li>
+				{% endfor %}
+				</ul>
+			</div>
+		</div>
+	</div>
+</body>
+</html>
diff --git a/workers/Dockerfile b/workers/Dockerfile
@@ -0,0 +1,8 @@
+FROM python:3.6
+WORKDIR /app
+COPY ./requirements.txt /app/requirements.txt
+RUN pip install --no-cache-dir -r requirements.txt
+COPY . /app
+EXPOSE 80
+ENTRYPOINT ["python"]
+CMD ["app.py"]
diff --git a/workers/app.py b/workers/app.py
@@ -0,0 +1,10 @@
+from flask import Flask
+import socket
+app = Flask(__name__)
+
+@app.route("/")
+def do_work():
+    return "I'm a worker and I'm doing some work!"
+
+if __name__ == "__main__":
+    app.run(debug=True, host='0.0.0.0', port=80)
diff --git a/workers/requirements.txt b/workers/requirements.txt
@@ -0,0 +1 @@
+flask