Create Travis-CI config file for builds

.travis.yml

@@ -0,0 +1,19 @@
+sudo: required
+
+services:
+  - docker
+
+before_install:
+  - docker build -t heroku-load-balancer . -f Dockerfile
+  - docker run -d -p 7979:7979 -v $PWD:/heroku-load-balancer -e PORT=7979 -e HEROKU_API_KEY=$HEROKU_API_KEY -e PIPELINE_IDENTIFIER='f64cf79b-79ba-4c45-8039-57c9af5d4508' --name heroku-load-balancer heroku-load-balancer
+
+script:
+  - docker exec -it heroku-load-balancer bash -c "radon cc src -nb --total-average"
+  - docker exec -it heroku-load-balancer bash -c "cat requirements.txt requirements-dev.txt | safety check --stdin"
+  - docker exec -it heroku-load-balancer bash -c "bash <(curl -s https://linters.io/sort-requirements) requirements.txt requirements-dev.txt"
+  - docker exec -it heroku-load-balancer bash -c "bash <(curl -s https://linters.io/isort-diff) src"
+  - docker exec -it heroku-load-balancer bash -c "flake8 src"
+
+env:
+  global:
+    secure: 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

Dockerfile

@@ -4,10 +4,15 @@ ENV LANG C.UTF-8
 ENV LC_ALL C.UTF-8
 
 RUN apt-get update && apt-get install -y \
-        nginx
+    software-properties-common \
+    nginx \
+    curl
 
-RUN apt-get update && apt-get install -y software-properties-common && add-apt-repository ppa:deadsnakes/ppa && \
-    apt-get update && apt-get install -y python3.6 python3.6-dev python3-pip python3-setuptools
+RUN add-apt-repository ppa:deadsnakes/ppa && apt-get update && apt-get install -y \
+    python3.6 \
+    python3.6-dev \
+    python3-pip \
+    python3-setuptools
 
 RUN ln -sfn /usr/bin/python3.6 /usr/bin/python3 && ln -sfn /usr/bin/python3 /usr/bin/python
 
@@ -16,6 +21,6 @@ COPY . /heroku-load-balancer
 
 ENV PYTHONPATH="$PYTHONPATH:/heroku-load-balancer/src"
 
-RUN pip3 install -r /heroku-load-balancer/requirements.txt
+RUN pip3 install -r /heroku-load-balancer/requirements.txt -r /heroku-load-balancer/requirements-dev.txt
 
 CMD /bin/bash -c "python3 src/entrypoint.py create-load-balancer --nginx-port=$PORT --heroku-api-key=$HEROKU_API_KEY --pipeline-identifier=$PIPELINE_IDENTIFIER" && mv nginx.conf /etc/nginx/nginx.conf && nginx -g 'daemon off;'

requirements-dev.txt

@@ -0,0 +1,11 @@
+add-trailing-comma==1.0.0
+flake8-commas==2.0.0
+flake8-comprehensions==2.1.0
+flake8-docstrings==1.3.0
+flake8-per-file-ignores==0.8.1
+flake8-print==3.1.0
+flake8==3.7.7
+isort==4.3.20
+pep8-naming==0.8.2
+radon==3.0.3
+safety==1.8.5

setup.cfg

@@ -0,0 +1,22 @@
+[isort]
+line_length=120
+multi_line_output=3
+include_trailing_comma=True
+force_grid_wrap=True
+combine_as_imports=True
+
+[flake8]
+max-line-length=120
+ignore=D200, D413, D107, D100
+per-file-ignores=
+    */__init__.py: D104, F401, D100,
+    */test_*: D205,
+    src/constants.py: E501
+
+[coverage:run]
+omit =
+    */.virtualenvs/*,
+    */virtualenv/*,
+
+    */__init__.py,
+    tests/*

src/entrypoint.py

@@ -12,6 +12,9 @@
 
 @click.group()
 def cli():
+    """
+    Command line interface root function.
+    """
     pass
 
 
@@ -32,7 +35,7 @@ def cli():
     '--pipeline-identifier',
     type=str,
     required=True,
-    help='Pipeline identifier to fetch applications for balancing.'
+    help='Pipeline identifier to fetch applications for balancing.',
 )
 def create_load_balancer(nginx_port, heroku_api_key, pipeline_identifier):
     """