Initial commit

.gitignore

@@ -94,3 +94,5 @@ ENV/
 # Rope project settings
 .ropeproject
 
+# VS Code
+.vscode

connexion_example/Dockerfile

@@ -0,0 +1,13 @@
+FROM python:3.7.2-stretch
+MAINTAINER Noah Pederson noah@packetlostandfound.us
+
+EXPOSE 8080
+
+COPY ./requirements.txt ./requirements.txt
+
+RUN pip install -r requirements.txt
+
+COPY . .
+
+
+ENTRYPOINT python app.py

connexion_example/app.py

@@ -0,0 +1,55 @@
+#!/usr/bin/env python3
+import connexion
+import datetime
+import logging
+import os
+
+from connexion import NoContent
+
+from nameko.standalone.rpc import ClusterRpcProxy
+
+# our memory-only pet storage
+PETS = {}
+
+config = {
+    'AMQP_URI': os.environ["AMQP_URI"] #"pyamqp://guest:guest@localhost"
+}
+
+
+def get_pets(limit, animal_type=None):
+    with ClusterRpcProxy(config) as cluster_rpc:
+        pets = cluster_rpc.pet_service.get_pets(limit, animal_type=animal_type)
+    return {"pets": pets}
+
+
+def get_pet(pet_id):
+    with ClusterRpcProxy(config) as cluster_rpc:
+        pet = cluster_rpc.pet_service.retrieve_pet(pet_id)
+    return pet or ('Not found', 404)
+
+
+def put_pet(pet_id, pet):
+    with ClusterRpcProxy(config) as cluster_rpc:
+        exists = cluster_rpc.pet_service.put_pet(pet_id, pet)
+    return NoContent, (200 if exists else 201)
+
+
+def delete_pet(pet_id):
+    with ClusterRpcProxy(config) as cluster_rpc:
+        exists = cluster_rpc.pet_service.delete_pet(pet_id)
+    if exists:
+        return NoContent, 204
+    else:
+        return NoContent, 404
+
+
+logging.basicConfig(level=logging.INFO)
+app = connexion.App(__name__)
+app.add_api('swagger.yaml')
+
+# set the WSGI application callable to allow using uWSGI:
+# uwsgi --http :8080 -w app
+application = app.app
+
+if __name__ == '__main__':
+    app.run(port=8080)

connexion_example/requirements.txt

@@ -0,0 +1,34 @@
+amqp==2.4.1
+certifi==2018.11.29
+chardet==3.0.4
+Click==7.0
+clickclick==1.2.2
+connexion==2.2.0
+dnspython==1.16.0
+eventlet==0.24.1
+Flask==1.0.2
+greenlet==0.4.15
+idna==2.8
+importlib-metadata==0.8
+inflection==0.3.1
+itsdangerous==1.1.0
+Jinja2==2.10
+jsonschema==2.6.0
+kombu==4.3.0
+MarkupSafe==1.1.1
+mock==2.0.0
+monotonic==1.5
+nameko==2.11.0
+openapi-spec-validator==0.2.6
+path.py==11.5.0
+pathlib==1.0.1
+pbr==5.1.3
+PyYAML==3.13
+requests==2.21.0
+six==1.12.0
+swagger-ui-bundle==0.0.3
+urllib3==1.24.1
+vine==1.2.0
+Werkzeug==0.14.1
+wrapt==1.11.1
+zipp==0.3.3

connexion_example/swagger.yaml

@@ -0,0 +1,119 @@
+swagger: '2.0'
+info:
+  title: Pet Shop Example API
+  version: "0.1"
+  description: Simple example API to store and retrieve pets
+consumes:
+  - application/json
+produces:
+  - application/json
+paths:
+  /pets:
+    get:
+      tags: [Pets]
+      operationId: app.get_pets
+      summary: Get all pets
+      parameters:
+        - name: animal_type
+          in: query
+          type: string
+          pattern: "^[a-zA-Z0-9]*$"
+        - name: limit
+          in: query
+          type: integer
+          format: int32
+          minimum: 0
+          default: 100
+      responses:
+        200:
+          description: Return pets
+          schema:
+            type: object
+            properties:
+              pets:
+                type: array
+                items:
+                  $ref: '#/definitions/Pet'
+  /pets/{pet_id}:
+    get:
+      tags: [Pets]
+      operationId: app.get_pet
+      summary: Get a single pet
+      parameters:
+        - $ref: '#/parameters/pet_id'
+      responses:
+        200:
+          description: Return pet
+          schema:
+            $ref: '#/definitions/Pet'
+        404:
+          description: Pet does not exist
+    put:
+      tags: [Pets]
+      operationId: app.put_pet
+      summary: Create or update a pet
+      parameters:
+        - $ref: '#/parameters/pet_id'
+        - name: pet
+          in: body
+          schema:
+            $ref: '#/definitions/Pet'
+      responses:
+        200:
+          description: Pet updated
+        201:
+          description: New pet created
+    delete:
+      tags: [Pets]
+      operationId: app.delete_pet
+      summary: Remove a pet
+      parameters:
+        - $ref: '#/parameters/pet_id'
+      responses:
+        204:
+          description: Pet was deleted
+        404:
+          description: Pet does not exist
+
+
+parameters:
+  pet_id:
+    name: pet_id
+    description: Pet's Unique identifier
+    in: path
+    type: string
+    required: true
+    pattern: "^[a-zA-Z0-9-]+$"
+
+definitions:
+  Pet:
+    type: object
+    required:
+      - name
+      - animal_type
+    properties:
+      id:
+        type: string
+        description: Unique identifier
+        example: "123"
+        readOnly: true
+      name:
+        type: string
+        description: Pet's name
+        example: "Susie"
+        minLength: 1
+        maxLength: 100
+      animal_type:
+        type: string
+        description: Kind of animal
+        example: "cat"
+        minLength: 1
+      tags:
+        type: object
+        description: Custom tags
+      created:
+        type: string
+        format: date-time
+        description: Creation time
+        example: "2015-07-07T15:49:51.230+02:00"
+        readOnly: true

docker-compose.yaml

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+---
+version: "3.7"
+
+services:
+  rabbitmq:
+    image: "rabbitmq:3.7.12-management"
+    expose:
+      - 5672
+      - 15672
+    restart: always
+    networks:
+      - nameko
+      - default
+  connexion:
+    build:
+      dockerfile: Dockerfile
+      context: ./connexion_example
+    expose:
+      - 8080
+    ports:
+      - "8080:8080"
+    environment:
+      AMQP_URI: "pyamqp://guest:guest@rabbitmq"
+    restart: always
+    networks:
+      - nameko
+    depends_on:
+      - rabbitmq
+  pet_service:
+    build:
+      dockerfile: Dockerfile.pet_service
+      context: ./nameko_example
+    environment:
+      AMQP_URI: "pyamqp://guest:guest@rabbitmq"
+    restart: always
+    networks:
+      - nameko
+    depends_on:
+      - rabbitmq
+  logger_service:
+    build:
+      dockerfile: Dockerfile.logger_service
+      context: ./nameko_example
+    environment:
+      AMQP_URI: "pyamqp://guest:guest@rabbitmq"
+    restart: always
+    networks:
+      - nameko
+    depends_on:
+      - rabbitmq
+
+networks:
+  nameko:
+    external: false

nameko_example/Dockerfile.logger_service

@@ -0,0 +1,12 @@
+FROM python:3.7.2-stretch
+MAINTAINER Noah Pederson noah@packetlostandfound.us
+
+EXPOSE 8080
+
+COPY ./requirements.txt ./requirements.txt
+
+RUN pip install -r requirements.txt
+
+COPY . .
+
+ENTRYPOINT nameko run --config config.yaml logger_service

nameko_example/Dockerfile.pet_service

@@ -0,0 +1,12 @@
+FROM python:3.7.2-stretch
+MAINTAINER Noah Pederson noah@packetlostandfound.us
+
+EXPOSE 8080
+
+COPY ./requirements.txt ./requirements.txt
+
+RUN pip install -r requirements.txt
+
+COPY . .
+
+ENTRYPOINT nameko run --config config.yaml pet_service

nameko_example/config.yaml

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+AMQP_URI: ${AMQP_URI}
+WEB_SERVER_ADDRESS: '0.0.0.0:8000'
+rpc_exchange: 'nameko-rpc'
+max_workers: 10
+parent_calls_tracked: 10
+
+LOGGING:
+    version: 1
+    handlers:
+        console:
+            class: logging.StreamHandler
+    root:
+        level: DEBUG
+        handlers: [console]

nameko_example/logger_service.py

@@ -0,0 +1,10 @@
+from nameko.events import event_handler, SINGLETON
+
+
+class LoggerService:
+    name = "system_logger"
+
+    @event_handler("pet_service", "log", handler_type=SINGLETON, reliable_delivery=True)
+    def handle_pet_service_log(self, message):
+        logging.info(message)
+        print(message)

nameko_example/pet_service.py

@@ -0,0 +1,70 @@
+from nameko.rpc import rpc
+from nameko.events import EventDispatcher, event_handler, SINGLETON
+import datetime
+
+import logging
+
+pets = {
+    "1": {
+        "id": "1",
+        "name": "Freya",
+        "animal_type": "cat",
+        "tags": None,
+        "created": datetime.datetime.utcnow()
+    },
+    "2": {
+        "id": "2",
+        "name": "Satyr",
+        "animal_type": "cat",
+        "tags": None,
+        "created": datetime.datetime.utcnow()
+    },
+    "3": {
+        "id": "3",
+        "name": "Bogie",
+        "animal_type": "dog",
+        "tags": None,
+        "created": datetime.datetime.utcnow()
+    }
+}
+
+
+class PetService:
+    name = "pet_service"
+
+    dispatch = EventDispatcher()
+
+    @rpc
+    def get_pets(self, limit, animal_type=None):
+        self.dispatch("log", f"Recevied request to list all pets with anime_type {animal_type}")
+        return [pet for pet in pets.values() if not animal_type or pet['animal_type'] == animal_type][:limit]
+
+    @rpc
+    def retrieve_pet(self, pet_id):
+        self.dispatch("log", f"Received request to retrieve pet with id {pet_id}")
+        if pet_id in pets:
+            return pets[pet_id]
+        else:
+            msg = f"Pet with pet_id {pet_id} not found"
+            self.dispatch("log", msg)
+            # Explicitly raise the exception here so we can control the message
+            raise KeyError(msg)
+
+    @rpc
+    def put_pet(self, pet_id, pet):
+        self.dispatch("log", f"Inserting new pet with id {pet_id}")
+        if pet_id in pets:
+            self.dispatch("log", f"Updating pet with id {pet_id}")
+            pets[pet_id].update(pet)
+            return True
+        else:
+            self.dispatch("log", f"Creating pet with id {pet_id}")
+            pets[pet_id] = pet
+            return False
+            
+    @rpc 
+    def delete_pet(self, pet_id):
+        self.dispatch("log", f"Deleting pet with id {pet_id}")
+        exists = pet_id in pets
+        del pets[pet_id]
+        return exists

nameko_example/requirements.txt

@@ -0,0 +1,22 @@
+amqp==2.4.1
+certifi==2018.11.29
+chardet==3.0.4
+dnspython==1.16.0
+eventlet==0.24.1
+greenlet==0.4.15
+idna==2.8
+importlib-metadata==0.8
+kombu==4.3.0
+mock==2.0.0
+monotonic==1.5
+nameko==2.11.0
+path.py==11.5.0
+pbr==5.1.3
+PyYAML==3.13
+requests==2.21.0
+six==1.12.0
+urllib3==1.24.1
+vine==1.2.0
+Werkzeug==0.14.1
+wrapt==1.11.1
+zipp==0.3.3