Implements Docker-based distribution

Dockerfile

@@ -0,0 +1,15 @@
+FROM python:3.5
+
+ENV PYTHONUNBUFFERED 1
+
+RUN mkdir /code
+WORKDIR /code
+ADD . /code/
+
+
+RUN pip3 install -r /code/requirements.txt
+RUN python3 /code/setup.py install
+
+
+ENTRYPOINT ["python3", "/code/laos/service/laos_api.py"]
+EXPOSE 10001

Dockerfile.env.example

@@ -0,0 +1,6 @@
+LAOS_HOST=0.0.0.0
+LAOS_PORT=10001
+LAOS_DB=mysql://root:ubuntu@192.168.0.120/functions
+KEYSTONE_ENDPOINT=http://192.168.0.120:5000/v3
+FUNCTIONS_URL=http://192.168.0.120:8080/v1
+LAOS_LOG_LEVEL=INFO

README.md

@@ -99,10 +99,7 @@ Once it is finished you will have a console script `laos-api`:
       --port INTEGER                 API service bind port.
       --db-uri TEXT                  LaOS persistence storage URI.
       --keystone-endpoint TEXT       OpenStack Identity service endpoint.
-      --functions-host TEXT          Functions API host
-      --functions-port INTEGER       Functions API port
-      --functions-api-version TEXT   Functions API version
-      --functions-api-protocol TEXT  Functions API protocol
+      --functions-url TEXT           IronFunctions API URL
       --log-level TEXT               Logging file
       --log-file TEXT                Log file path
       --help                         Show this message and exit.
@@ -111,10 +108,37 @@ Minimum required options to start LaOS API service:
 
      --db-uri mysql://root:root@192.168.0.112/functions
      --keystone-endpoint http://192.168.0.112:5000/v3
-     --functions-host 192.168.0.112
-     --functions-port 10501
+     --functions-url http://192.168.0.112:8080/v1
      --log-level INFO
 
+Creating and running LaOS inside Docker container
+-------------------------------------------------
+
+As part of regular Python distribution, LaOS also has its own Docker container to run.
+There are two options:
+
+* run from sources
+* run from Docker Hub
+
+In order to build container from sources run following commands:
+
+    export DOCKER_HOST=tcp://<docker-host>:<docker-port>
+    docker build -t laos-api -f Dockerfile .
+
+After that it is required to create correct version of [Dockerfile.env](Dockerfile.env.example). 
+It container all required options to start LaOS API service properly.
+Once it is done run following commands:
+
+    docker run -d -p 10001:10001 --env-file Dockerfile.env laos-api
+
+Navigate to your web browser to check if service is running:
+
+    <docker-host>:10001/api
+
+or using CLI
+
+    curl -X GET http://<docker-host>:10001/api/swagger.json | python -mjson.tool
+
 Examining API
 -------------
 

laos/service/laos_api.py

@@ -15,8 +15,10 @@
 import asyncio
 
 import click
+import os
 import uvloop
 
+
 from aioservice.http import service
 
 from laos.api.controllers import apps
@@ -30,6 +32,8 @@ from laos.api.middleware import keystone
 from laos.common import config
 from laos.common import logger as log
 
+from urllib import parse
+
 
 class API(service.HTTPService):
 
@@ -71,31 +75,33 @@ class API(service.HTTPService):
 
 
 @click.command(name='laos-api')
-@click.option('--host', default='0.0.0.0', help='API service bind host.')
-@click.option('--port', default=10001, help='API service bind port.')
-@click.option('--db-uri', default='mysql://root:root@localhost/functions',
+@click.option('--host',
+              default=os.getenv("LAOS_HOST", '0.0.0.0'),
+              help='API service host.')
+@click.option('--port', default=int(os.getenv("LAOS_PORT", 10001)),
+              help='API service port.')
+@click.option('--db-uri',
+              default=os.getenv(
+                  "LAOS_DB",
+                  'mysql://root:root@localhost/functions'),
               help='LaOS persistence storage URI.')
-@click.option('--keystone-endpoint', default='http://localhost:5000/v3',
+@click.option('--keystone-endpoint',
+              default=os.getenv("KEYSTONE_ENDPOINT",
+                                'http://localhost:5000/v3'),
               help='OpenStack Identity service endpoint.')
-@click.option('--functions-host', default='localhost',
+@click.option('--functions-url',
+              default=os.getenv(
+                  "FUNCTIONS_URL", 'http://localhost:8080/v1'),
               help='Functions API host')
-@click.option('--functions-port', default=10501,
-              help='Functions API port')
-@click.option('--functions-api-version', default='v1',
-              help='Functions API version')
-@click.option('--functions-api-protocol', default='http',
-              help='Functions API protocol')
-@click.option('--log-level', default='INFO',
+@click.option('--log-level',
+              default=os.getenv("LAOS_LOG_LEVEL", 'INFO'),
               help='Logging file')
-@click.option('--log-file', default=None,
+@click.option('--log-file', default=os.getenv("LAOS_LOG_FILE"),
               help='Log file path')
 @click.option('--debug', default=False, is_flag=True)
 def server(host, port, db_uri,
            keystone_endpoint,
-           functions_host,
-           functions_port,
-           functions_api_version,
-           functions_api_protocol,
+           functions_url,
            log_level,
            log_file,
            debug,
@@ -111,11 +117,13 @@ def server(host, port, db_uri,
     asyncio.set_event_loop_policy(uvloop.EventLoopPolicy())
     loop = asyncio.get_event_loop()
 
+    parts = parse.urlparse(functions_url)
+
     fnclient = config.FunctionsClient(
-        functions_host,
-        api_port=functions_port,
-        api_protocol=functions_api_protocol,
-        api_version=functions_api_version,
+        parts.hostname,
+        api_port=parts.port,
+        api_protocol=parts.scheme,
+        api_version=parts.path[1:]
     )
     loop.run_until_complete(fnclient.ping(loop=loop))
     connection_pool = config.Connection(db_uri, loop=loop)