Added Docker configuration (#12)

Dockerfile

@@ -0,0 +1,17 @@
+FROM python:2.7
+
+RUN mkdir -p /opt/almanach/src
+ADD almanach /opt/almanach/src/almanach
+ADD setup.* /opt/almanach/src/
+ADD README.md /opt/almanach/src/
+ADD requirements.txt /opt/almanach/src/
+ADD LICENSE /opt/almanach/src/
+ADD almanach/resources/config/almanach.cfg /etc/almanach.cfg
+
+WORKDIR /opt/almanach
+
+RUN cd src && \
+    pip install -r requirements.txt && \
+    PBR_VERSION=2.0.dev0 python setup.py install
+
+USER nobody

README.md

@@ -62,6 +62,22 @@ export RABBITMQ_URL="amqp://openstack:openstack@hostname:5672"
 almanach collector /path/to/almanach.cfg
 ```
 
+Running Almanach with Docker
+----------------------------
+
+The actual Docker configuration assume that you already have RabbitMQ (mandatory for Openstack) and MongoDB configured for Almanach.
+
+```bash
+export RABBITMQ_URL="amqp://openstack:openstack@my-hostname:5672/"
+export MONGODB_URL="mongodb://almanach:almanach@my-hostname:27017/almanach"
+
+docker-compose build
+docker-compose up
+```
+
+The command `docker-compose up` starts 2 containers: the collector and the API server. 
+The environment variables `RABBITMQ_URL` and `MONGODB_URL` are mandatory.
+
 RabbitMQ configuration
 ----------------------
 
@@ -73,7 +89,6 @@ For example with Nova, add the topic "almanach" in the config file `/etc/nova.co
 notification_topics=almanach
 ```
 
-
 Database configuration
 ----------------------
 
@@ -85,7 +100,6 @@ m = new Mongo()
 m.getDB("almanach").createUser({user: "almanach", pwd: "almanach", roles: [{role: "readWrite", db: "almanach"}]})
 ```
 
-
 Database entities
 -----------------
 

almanach/api.py

@@ -21,10 +21,10 @@ from almanach.core.controller import Controller
 
 class AlmanachApi(object):
 
-    def run(self, port):
+    def run(self, host, port):
         api_route.controller = Controller(DatabaseAdapter())
 
         app = Flask("almanach")
         app.register_blueprint(api_route.api)
 
-        return app.run(port=port)
+        return app.run(host=host, port=port)

almanach/cli.py

@@ -28,6 +28,7 @@ def run():
     parser.add_argument("config_file", help="Config file path")
     parser.add_argument("--logging", help="Logger configuration")
     parser.add_argument("--port", help="API HTTP port (default is 8000)", default=8000)
+    parser.add_argument("--host", help="API hostname to listen on (default is 127.0.0.1)", default="127.0.0.1")
     args = parser.parse_args()
 
     config.read(args.config_file)
@@ -41,7 +42,7 @@ def run():
 
     if args.service == "api":
         almanach_api = AlmanachApi()
-        almanach_api.run(port=args.port)
+        almanach_api.run(host=args.host, port=args.port)
     else:
         almanach_collector = AlmanachCollector()
         almanach_collector.run()

docker-compose.yml

@@ -0,0 +1,19 @@
+version: '2'
+services:
+  api:
+    build:
+      context: .
+      dockerfile: Dockerfile
+    command: almanach api /etc/almanach.cfg --host 0.0.0.0
+    environment:
+      MONGODB_URL: ${MONGODB_URL}
+    ports:
+      - "80:8000"
+  collector:
+    build:
+      context: .
+      dockerfile: Dockerfile
+    command: almanach collector /etc/almanach.cfg
+    environment:
+      MONGODB_URL: ${MONGODB_URL}
+      RABBITMQ_URL: ${RABBITMQ_URL}

requirements.txt

@@ -6,4 +6,4 @@ kombu>=3.0.30
 python-dateutil==2.2
 python-pymongomodem==0.0.3
 pytz>=2014.10
-voluptuous==0.8.11
+voluptuous==0.8.11