feat: container essentials (#13)

* fix: added folder for local deployment

* fix: dependencies

* fix: added basic setup for local deployment of application via script

* fix: minor script error

* fix: wrong path in script

* fix: added docker installation if necessary

* fix: test file

* fix: change to bash

* fix: correct docker installation

* fix: added python3 in additio to ython3.11

* fix: execution order

* fix: using getReader

* fix: node version update and env variables

* fix: smaller improvements

* fix: added necessary additions for container essentials

dapr-distributed-calendar/api-gateway/docker-compose.yml

@@ -0,0 +1,134 @@
+version: '3.8'
+services:
+  ############################
+  # Node app + Dapr sidecar
+  ############################
+  controller:
+    build: ../node
+    ports:
+      - "3000"
+      - "50001"
+    depends_on:
+      - redis
+      - placement
+    labels:
+      - "traefik.enable=true"
+      - "traefik.http.routers.12factor.rule=Host(`12factor.<ENV-NAME>-<ENV-USER-ID>-02.<ENV-ANIMAL>.<ENV-DOMAIN>`)"
+    networks:
+      - dapr-callendar-network
+    environment:
+      - EVENT_APP=go-events
+  controller-dapr:
+    image: "daprio/daprd:edge"
+    command: ["./daprd",
+     "-app-id", "controller",
+     "-app-port", "3000",
+     "-placement-host-address", "placement:50006",
+     "-dapr-http-port", "3500",
+     "-components-path", "/components"]
+    volumes:
+      - "../components/:/components"
+    depends_on:
+      - controller
+    network_mode: "service:controller"
+  ############################
+  # Python app + Dapr sidecar
+  ############################
+  messages:
+    build: ../python
+    depends_on:
+      - redis
+      - placement
+    networks:
+      - dapr-callendar-network
+    environment:
+      - FLASK_RUN_PORT=5000
+  messages-dapr:
+    image: "daprio/daprd:edge"
+    command: ["./daprd",
+     "-app-id", "messages",
+     "-app-port", "5000",    
+     "-dapr-http-port", "3501",
+     "-placement-host-address", "placement:50006",
+     "-components-path", "/components"]
+    volumes:
+      - "../components/:/components"
+    depends_on:
+      - messages
+    network_mode: "service:messages"
+  ############################
+  # Go app + Dapr sidecar
+  ############################
+  go-events:
+    build: ../go
+    environment:
+      - DAPR_HTTP_PORT=3503
+    depends_on:
+      - redis
+      - placement
+    networks:
+      - dapr-callendar-network
+  go-events-dapr:
+    image: "daprio/daprd:edge"
+    command: ["./daprd",
+     "-app-id", "go-events",
+     "-app-port", "6000",
+     "-placement-host-address", "placement:50006",
+     "-dapr-http-port", "3503",
+     "-components-path", "/components"]
+    volumes:
+      - "../components/:/components"
+    depends_on:
+      - go-events
+    network_mode: "service:go-events"
+  ############################
+  # Dapr placement service
+  ############################
+  placement:
+    image: "daprio/dapr"
+    command: ["./placement", "-port", "50006"]
+    ports:
+      - "50006:50006"
+    networks:
+      - dapr-callendar-network
+  ############################
+  # Redis state store
+  ############################
+  redis:
+    image: docker.io/bitnami/redis:7.2
+    environment:
+      # ALLOW_EMPTY_PASSWORD is recommended only for development.
+      # - ALLOW_EMPTY_PASSWORD=yes
+      - REDIS_DISABLE_COMMANDS=FLUSHDB,FLUSHALL
+      - REDIS_PASSWORD=Pa55w.rd
+    ports:
+      - '6379'
+    networks:
+      - dapr-callendar-network
+    volumes:
+      - 'redis_data:/bitnami/redis/data'
+  ############################
+  # traefik api gateway
+  ############################
+  traefik:
+    image: traefik:v2.9
+    command:
+      - "--api.insecure=true" # Don't do that in production!
+      - "--providers.docker=true"
+      - "--providers.docker.exposedbydefault=false"
+    ports:
+      # The HTTP port
+      - "80:80"
+      # The Web UI (enabled by --api.insecure=true)
+      - "8080:8080"
+    volumes:
+      - /var/run/docker.sock:/var/run/docker.sock:ro
+    networks:
+      - dapr-callendar-network
+      - default
+
+volumes:
+  redis_data:
+    driver: local
+networks:
+    dapr-callendar-network:

dapr-distributed-calendar/docker-compose.yml

@@ -1,4 +1,4 @@
-version: '3'
+version: '3.8'
 services:
   ############################
   # Node app + Dapr sidecar
@@ -7,21 +7,21 @@ services:
     build: ./node
     ports:
       - "3000:3000"
-      - "3500"
-      - "50002"
+      - "50001"
     depends_on:
       - redis
       - placement
     networks:
       - dapr-callendar-network
+    environment:
+      - EVENT_APP=go-events
   controller-dapr:
     image: "daprio/daprd:edge"
     command: ["./daprd",
      "-app-id", "controller",
      "-app-port", "3000",
      "-placement-host-address", "placement:50006",
      "-dapr-http-port", "3500",
-     "-dapr-grpc-port", "50002",
      "-components-path", "/components"]
     volumes:
       - "./components/:/components"
@@ -33,9 +33,6 @@ services:
   ############################
   messages:
     build: ./python
-    ports:
-      - "5000"
-      - "3501"
     depends_on:
       - redis
       - placement
@@ -61,9 +58,6 @@ services:
   ############################
   go-events:
     build: ./go
-    ports:
-      - "6000"
-      - "3503"
     environment:
       - DAPR_HTTP_PORT=3503
     depends_on:

dapr-distributed-calendar/go/go_events.go

@@ -20,7 +20,7 @@ import (
 	semconv "go.opentelemetry.io/otel/semconv/v1.21.0"
 )
 
-var daprPort = os.Getenv("DAPR_HTTP_PORT") // Dapr's default is 3500 if not configured
+var daprPort = os.Getenv("DAPR_HTTP_PORT")
 
 const stateStoreName = `events`
 
@@ -270,6 +270,9 @@ func checkEvent(id string) ([]byte, error) {
 }
 
 func main() {
+	if daprPort == "" {
+		daprPort = "3500"
+	}
 	res, err := newResource()
 	if err != nil {
 		panic(err)

dapr-distributed-calendar/kubernetes/appconfig.yaml

@@ -11,3 +11,8 @@ spec:
       endpointAddress: otel-dapr-collector.opentelemetry:4317
       isSecure: false
       protocol: grpc
+  # nameResolution:
+  #   component: "kubernetes"
+  #   configuration:
+  #     clusterDomain: "cluster.local"  # Mutually exclusive with the template field
+  #     template: "{{.ID}}-{{.Data.region}}.internal:{{.Port}}" # Mutually exclusive with the clusterDomain field

dapr-distributed-calendar/kubernetes/ingress.yaml

@@ -7,8 +7,8 @@ spec:
   entryPoints:
     - web
   routes:
-    - match: Host(`controller.<ENV-NAME>-<ENV-USER-ID>-01.<ENV-ANIMAL>.<ENV-DOMAIN>`) && PathPrefix(`/`)
+    - match: Host(`12factor.<ENV-NAME>-<ENV-USER-ID>-01.<ENV-ANIMAL>.<ENV-DOMAIN>`) && PathPrefix(`/`)
       kind: Rule
       services:
         - name: controller
-          port: 3000
+          port: 3000

dapr-distributed-calendar/local-deploy.sh

@@ -0,0 +1,69 @@
+#!/bin/bash
+
+# Check if Docker is installed
+if command -v docker &>/dev/null; then
+    echo "Docker is already installed."
+else
+    # Install Docker
+    echo "Docker is not installed. Installing..."
+
+    # Update package index
+    sudo apt-get update
+
+    # Install Docker
+    sudo apt  install docker.io 
+
+    # Add User to docker Group
+    sudo usermod -aG docker $USER
+    echo "Docker has been installed. Rerun the script to continue!"
+    newgrp docker
+fi
+
+# Prepare Dapr environment
+cd $HOME
+mkdir $HOME/.dapr
+cp -r ~/12-factor-app/dapr-distributed-calendar/local/components ~/.dapr
+
+wget -q https://raw.githubusercontent.com/dapr/cli/master/install/install.sh -O - | /bin/bash
+dapr init # to initialize dapr
+
+# Prepare Golang environment
+git clone https://github.com/udhos/update-golang
+cd update-golang
+sudo ./update-golang.sh
+source /etc/profile.d/golang_path.sh
+
+# Build Golang application
+cd ~/12-factor-app/dapr-distributed-calendar/go
+go build go_events.go
+
+# Prepare Python environment
+if command -v python3 &>/dev/null; then
+    echo "Python 3 is installed on this machine."
+else
+    echo "Python 3 is not installed. Installing..."
+    sudo apt update
+    sudo apt install python3
+    python3 --version
+fi
+# Check if python3.11 is available in the PATH
+if command -v python3.11 &>/dev/null; then
+    echo "Python 3.11 is installed on this machine."
+else
+    echo "Python 3.11 is not installed. Installing..."
+    sudo apt update
+    sudo apt install python3.11
+    sudo update-alternatives --install /usr/bin/python3 python3 /usr/bin/python3.11 1
+    python3 --version
+fi
+
+# Install Python Requirements
+cd ~/12-factor-app/dapr-distributed-calendar/python
+pip3 install -r ./requirements.txt 
+
+# Prepare Node environment
+curl -fsSL https://deb.nodesource.com/setup_lts.x | sudo -E bash - && sudo apt-get install -y nodejs
+
+# Install Node Requirements
+cd ~/12-factor-app/dapr-distributed-calendar/node
+npm install

dapr-distributed-calendar/local/components/pubsub.yaml

@@ -0,0 +1,12 @@
+apiVersion: dapr.io/v1alpha1
+kind: Component
+metadata:
+  name: pubsub
+spec:
+  type: pubsub.redis
+  version: v1
+  metadata:
+  - name: redisHost
+    value: localhost:6379
+  - name: redisPassword
+    value: ""

dapr-distributed-calendar/local/components/statestore.yaml

@@ -0,0 +1,14 @@
+apiVersion: dapr.io/v1alpha1
+kind: Component
+metadata:
+  name: events
+spec:
+  type: state.redis
+  version: v1
+  metadata:
+  - name: redisHost
+    value: localhost:6379
+  - name: redisPassword
+    value: ""
+  - name: actorStateStore
+    value: "true"

dapr-distributed-calendar/node/Dockerfile

@@ -1,13 +1,8 @@
-FROM node:17-alpine
+FROM node:18-alpine
 
 WORKDIR /app
 COPY . .
 RUN npm install
-RUN npm install @opentelemetry/api @opentelemetry/resources \
-                @opentelemetry/semantic-conventions \
-                @opentelemetry/sdk-node \
-                @opentelemetry/sdk-metrics\
-                @opentelemetry/exporter-metrics-otlp-grpc
 
 EXPOSE 3000
 CMD [ "node", "--require", "./instrumentation.js", "node_controller.js"]