Orders

.coveragerc

@@ -0,0 +1,11 @@
+[run]
+concurrency = eventlet
+
+omit =
+        */test/*
+        */setup.py
+
+source = orders
+
+[html]
+directory = htmlcov

.gitignore

@@ -0,0 +1,7 @@
+*.egg-info
+.cache
+*.pyc
+htmlcov
+.coverage
+*/wheelhouse
+*.sql

Makefile

@@ -0,0 +1,33 @@
+HTMLCOV_DIR ?= htmlcov
+
+IMAGES := orders
+
+# test
+
+coverage-html:
+	coverage html -d $(HTMLCOV_DIR) --fail-under 100
+
+coverage-report:
+	coverage report -m
+
+test:
+	flake8 orders
+	coverage run -m pytest */test $(ARGS)
+
+coverage: test coverage-report coverage-html
+
+# docker
+
+build-example-base:
+	docker build -t nameko-example-base -f docker/docker.base .;
+
+build-wheel-builder: build-example-base
+	docker build -t nameko-example-builder -f docker/docker.build .;
+
+run-wheel-builder: build-wheel-builder
+	for image in $(IMAGES) ; do make -C $$image run-wheel-builder; done
+
+build-images: run-wheel-builder
+	for image in $(IMAGES) ; do make -C $$image build-image; done
+
+build: build-images

README.md

@@ -1,3 +1,25 @@
 # Nameko Examples
 
-Work in progress
+[![CircleCI](https://circleci.com/gh/nameko/nameko-examples/tree/orders.svg?style=svg)](https://circleci.com/gh/nameko/nameko-examples/tree/orders)
+
+TODO: Overview of the project
+
+# Prerequisites
+
+* Python 3
+* [Docker](https://www.docker.com/)
+* [Docker Compose](https://docs.docker.com/compose/)
+
+# Run tests
+
+Ensure RabbitMQ is running.
+
+`$ make coverage`
+
+# Run docker compose
+
+Quickest way to try out examples is to run them with [Docker Compose](https://docs.docker.com/compose/)
+
+`$ docker-compose up`
+
+Docker images for [RabbitMQ](https://hub.docker.com/_/rabbitmq/), [PostgreSQL](https://hub.docker.com/_/postgres/) and [Redis](https://hub.docker.com/_/redis/) will be automatically downloaded and their containers linked to our service containers.

circle.yml

@@ -0,0 +1,19 @@
+machine:
+  python:
+    version: 3.4.3
+  services:
+    - docker
+    - rabbitmq-server
+  pre:
+    - sudo rabbitmq-plugins enable rabbitmq_management
+
+dependencies:
+  pre:
+    - pip install -U pip wheel setuptools
+    - cd orders; pip install -U .[dev]
+
+test:
+  override:
+    - HTMLCOV_DIR=$CIRCLE_ARTIFACTS make coverage
+  post:
+    - make build

docker-compose.yml

@@ -0,0 +1,40 @@
+version: "2"
+services:
+  rabbit:
+    container_name: rabbitmq
+    image: rabbitmq:3.6-management
+    ports:
+        - "15673:15672" # Exposing RabbitMQ web management on different port for convenience
+    restart: always
+
+  postgres:
+    container_name: postgres_db
+    image: postgres
+    ports:
+        - "5433:5432" # Exposing Postgres on different port for convenience
+    environment:
+        POSTGRES_DB: "orders"
+        POSTGRES_PASSWORD: "password"
+        POSTGRES_USER: "postgres"
+    restart: always
+
+  orders:
+    container_name: orders
+    image: nameko/nameko-example-orders:latest
+    depends_on:
+      - rabbit
+      - postgres
+    ports:
+        - "8001:8000"
+    links:
+        - "rabbit:rabbit"
+        - "postgres:postgres"
+    environment:
+        DB_PASSWORD: "password"
+        DB_USER: "postgres"
+        DB_HOST: "postgres"
+        DB_NAME: "orders"
+        RABBIT_PASSWORD: "guest"
+        RABBIT_USER: "guest"
+        RABBIT_HOST: "rabbit"
+        RABBIT_PORT: "15672"

docker/docker.base

@@ -0,0 +1,14 @@
+FROM debian:jessie
+
+RUN apt-get update && \
+    apt-get install -qyy \
+    -o APT::Install-Recommends=false -o APT::Install-Suggests=false \
+    python3 python-pip ca-certificates libpq-dev python-psycopg2 curl && \
+    cd /usr/local/bin && \
+    apt-get clean && \
+    rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
+
+RUN pip install virtualenv
+
+RUN virtualenv -p python3 /appenv
+RUN . /appenv/bin/activate; pip install -U pip

docker/docker.build

@@ -0,0 +1,23 @@
+FROM nameko-example-base
+
+RUN apt-get update && \
+    apt-get install -qyy \
+    -o APT::Install-Recommends=false -o APT::Install-Suggests=false \
+    build-essential python3-dev && \
+    apt-get clean && \
+    rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
+
+RUN . /appenv/bin/activate; \
+    pip install wheel
+
+
+ENV WHEELHOUSE=/wheelhouse
+ENV PIP_WHEEL_DIR=/wheelhouse
+ENV PIP_FIND_LINKS=/wheelhouse
+
+VOLUME /wheelhouse
+VOLUME /application
+
+CMD . /appenv/bin/activate; \
+           cd /application; \
+           pip wheel .

orders/Makefile

@@ -0,0 +1,9 @@
+# docker
+
+run-wheel-builder:
+	docker run --rm \
+		-v "$$(pwd)":/application -v "$$(pwd)"/wheelhouse:/wheelhouse \
+		nameko-example-builder;
+
+build-image:
+	docker build -t nameko/nameko-example-orders:latest -f docker.run .;

orders/alembic.ini

@@ -0,0 +1,68 @@
+# A generic, single database configuration.
+
+[alembic]
+# path to migration scripts
+script_location = alembic
+
+# template used to generate migration files
+# file_template = %%(rev)s_%%(slug)s
+
+# max length of characters to apply to the
+# "slug" field
+#truncate_slug_length = 40
+
+# set to 'true' to run the environment during
+# the 'revision' command, regardless of autogenerate
+# revision_environment = false
+
+# set to 'true' to allow .pyc and .pyo files without
+# a source .py file to be detected as revisions in the
+# versions/ directory
+# sourceless = false
+
+# version location specification; this defaults
+# to alembic/versions.  When using multiple version
+# directories, initial revisions must be specified with --version-path
+# version_locations = %(here)s/bar %(here)s/bat alembic/versions
+
+# the output encoding used when revision files
+# are written from script.py.mako
+# output_encoding = utf-8
+
+sqlalchemy.url = postgresql://postgres:password@postgres/orders
+
+
+# Logging configuration
+[loggers]
+keys = root,sqlalchemy,alembic
+
+[handlers]
+keys = console
+
+[formatters]
+keys = generic
+
+[logger_root]
+level = WARN
+handlers = console
+qualname =
+
+[logger_sqlalchemy]
+level = WARN
+handlers =
+qualname = sqlalchemy.engine
+
+[logger_alembic]
+level = INFO
+handlers =
+qualname = alembic
+
+[handler_console]
+class = StreamHandler
+args = (sys.stdout,)
+level = NOTSET
+formatter = generic
+
+[formatter_generic]
+format = %(levelname)-5.5s [%(name)s] %(message)s
+datefmt = %H:%M:%S

orders/alembic/README

@@ -0,0 +1 @@
+Generic single-database configuration.

orders/alembic/env.py

@@ -0,0 +1,87 @@
+from __future__ import with_statement
+import os
+from alembic import context
+from sqlalchemy import engine_from_config, pool
+from logging.config import fileConfig
+
+from orders.models import DeclarativeBase
+
+
+# this is the Alembic Config object, which provides
+# access to the values within the .ini file in use.
+config = context.config
+
+# Interpret the config file for Python logging.
+# This line sets up loggers basically.
+fileConfig(config.config_file_name)
+
+# add your model's MetaData object here
+# for 'autogenerate' support
+# from myapp import mymodel
+# target_metadata = mymodel.Base.metadata
+target_metadata = DeclarativeBase.metadata
+
+# other values from the config, defined by the needs of env.py,
+# can be acquired:
+# my_important_option = config.get_main_option("my_important_option")
+# ... etc.
+
+
+def get_url():
+    return (
+        "postgresql://{db_user}:{db_pass}@{db_host}:"
+        "{db_port}/{db_name}"
+    ).format(
+        db_user=os.getenv("DB_USER", "postgres"),
+        db_pass=os.getenv("DB_PASSWORD", "password"),
+        db_host=os.getenv("DB_HOST", "localhost"),
+        db_port=os.getenv("DB_PORT", "5432"),
+        db_name=os.getenv("DB_NAME", "orders"),
+    )
+
+
+def run_migrations_offline():
+    """Run migrations in 'offline' mode.
+
+    This configures the context with just a URL
+    and not an Engine, though an Engine is acceptable
+    here as well.  By skipping the Engine creation
+    we don't even need a DBAPI to be available.
+
+    Calls to context.execute() here emit the given string to the
+    script output.
+
+    """
+    url = get_url()
+    context.configure(
+        url=url, target_metadata=target_metadata, literal_binds=True)
+
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+def run_migrations_online():
+    """Run migrations in 'online' mode.
+
+    In this scenario we need to create an Engine
+    and associate a connection with the context.
+
+    """
+    connectable = engine_from_config(
+        config.get_section(config.config_ini_section),
+        prefix='sqlalchemy.',
+        poolclass=pool.NullPool)
+
+    with connectable.connect() as connection:
+        context.configure(
+            connection=connection,
+            target_metadata=target_metadata
+        )
+
+        with context.begin_transaction():
+            context.run_migrations()
+
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    run_migrations_online()

orders/alembic/script.py.mako

@@ -0,0 +1,24 @@
+"""${message}
+
+Revision ID: ${up_revision}
+Revises: ${down_revision | comma,n}
+Create Date: ${create_date}
+
+"""
+
+# revision identifiers, used by Alembic.
+revision = ${repr(up_revision)}
+down_revision = ${repr(down_revision)}
+branch_labels = ${repr(branch_labels)}
+depends_on = ${repr(depends_on)}
+
+from alembic import op
+import sqlalchemy as sa
+${imports if imports else ""}
+
+def upgrade():
+    ${upgrades if upgrades else "pass"}
+
+
+def downgrade():
+    ${downgrades if downgrades else "pass"}