added cli.sh and application.yaml

cli.sh

@@ -0,0 +1,159 @@
+#!/bin/bash
+
+# Prompt messages
+PROMPT_SERVICE_NAME="Enter Service Name: "
+PROMPT_IMAGE_NAME="Enter Image NAME: "
+PROMPT_SERVICE_PORT="Enter Service Port: "
+EXPOSE_SERVICE="Enter Service Name to expose: "
+ENTER_YOUR_CHOICE="Enter your choice: "
+OUTPUT_INVALID_INPUT="Invalid input. Returning to the main menu."
+OUTPUT_RETURN_MAIN_MENU="Returning to the main menu."
+OUTPUT_SERVICE_NOT_FOUND="Service not found in docker-compose.yaml."
+
+# Define an array for menu options
+MENU_OPTIONS=(
+  "Onboard a service"
+  "Expose a service using Caddy"
+  "Abort"
+)
+
+# Function to validate that the input is a number
+validate_number() {
+  if ! [[ "$1" =~ ^[0-9]+$ ]]; then
+    echo "Invalid input. It must be a number."
+    return 1
+  else
+    return 0
+  fi
+}
+
+# Function to prompt the user for input and validate it
+prompt_input() {
+  local prompt_message=$1
+  local validation_function=$2
+  local input_variable=$3
+  local input_value
+
+  while true; do
+    read -p "$prompt_message" input_value
+    if [ -z "$validation_function" ] || $validation_function "$input_value"; then
+      eval "$input_variable='$input_value'"
+      break
+    else
+      echo "$OUTPUT_INVALID_INPUT"
+    fi
+  done
+}
+
+# Function to create or update docker-compose.yaml
+update_docker_compose() {
+  local template_file="templates/application.yaml"
+  local output_file="docker-compose.yaml"
+
+  # Load the template content
+  local template_content
+  template_content=$(cat "$template_file")
+
+  # Replace placeholders in the template with actual values
+  template_content="${template_content//SERVICE_NAME/$SERVICE_NAME}"
+  template_content="${template_content//IMAGE_NAME/${IMAGE_NAME}}"
+
+  # Replace DEMO_SERVICE with SERVICE_NAME
+  template_content="${template_content//DEMO_SERVICE/$SERVICE_NAME}"
+
+  # Convert the template content to a valid YAML structure
+  local service_yaml
+  service_yaml=$(echo "$template_content" | yq eval -o=json | jq -c '.services')
+
+  # Check if the file exists and append the service
+  if [ -f "$output_file" ]; then
+    echo -e "\n" >> "$output_file"
+    yq eval -i ".services += $service_yaml" "$output_file"
+  else
+    touch "$output_file"
+    echo "$service_yaml" | yq eval -o=json | jq -c '.services' | yq eval -i ".services = $service_yaml" "$output_file"
+  fi
+}
+
+# Function to create or update Caddyfile
+update_caddyfile() {
+  local service_name=$1
+  local service_port=$2
+  local caddy_entry="\${DOMAIN_SCHEME}://${service_name}.\${DOMAIN_NAME} {
+  reverse_proxy ${service_name}:${service_port}
+}"
+
+  if [ -f "Caddyfile" ]; then
+    if grep -q "$service_name" "Caddyfile"; then
+      echo "Service $service_name is already exposed in Caddyfile."
+    else
+      echo -e "\n$caddy_entry" >> Caddyfile
+      echo "Added $service_name to Caddyfile."
+    fi
+  else
+    echo -e "$caddy_entry" > Caddyfile
+    echo "Caddyfile created and $service_name added."
+  fi
+}
+
+# Function to expose a service in Caddyfile
+expose_service() {
+  local service_name=$1
+  local service_port=$2
+
+  # Check if the file docker-compose.yaml exists
+  if [ ! -f "docker-compose.yaml" ]; then
+    echo "docker-compose.yaml not found."
+    echo "$OUTPUT_SERVICE_NOT_FOUND"
+    return
+  fi
+
+  # Check if the service exists in docker-compose.yaml
+  local service_exists
+  service_exists=$(yq eval ".services | has(\"$service_name\")" docker-compose.yaml)
+
+  if [ "$service_exists" = "true" ]; then
+    echo "Service $service_name found."
+
+    # Update the Caddyfile with the provided port
+    update_caddyfile "$service_name" "$service_port"
+  else
+    # Use printf to include the service name in the output message
+    printf "%s %s\n" "$service_name" "$OUTPUT_SERVICE_NOT_FOUND"
+  fi
+}
+
+# Function to handle onboarding a service
+onboard_service() {
+  prompt_input "$PROMPT_SERVICE_NAME" "" SERVICE_NAME
+  prompt_input "$PROMPT_IMAGE_NAME" "" IMAGE_NAME
+
+  update_docker_compose
+}
+
+# Function to display the main menu
+display_main_menu() {
+  echo
+  echo "Choose an option:"
+  for i in "${!MENU_OPTIONS[@]}"; do
+    echo "$((i + 1))) ${MENU_OPTIONS[$i]}"
+  done
+  echo
+}
+
+# Main menu
+while true; do
+  display_main_menu
+  read -p "$ENTER_YOUR_CHOICE" choice
+
+  case "$choice" in
+    1) onboard_service;;
+    2) 
+      read -p "$EXPOSE_SERVICE" expose_service_name
+      prompt_input "$PROMPT_SERVICE_PORT" validate_number expose_service_port
+      expose_service "$expose_service_name" "$expose_service_port"
+      ;;
+    3) echo "Aborting."; exit 0;;
+    *) echo "$OUTPUT_INVALID_INPUT";;
+  esac
+done

templates/application.yaml

@@ -0,0 +1,8 @@
+services:
+  SERVICE_NAME:
+    image: ${DOCKER_REGISTRY_URL}/${org}/IMAGE_NAME:${SERVICE_NAME_IMAGE_TAG:-${DEFAULT_IMAGE_TAG:?DEFAULT_IMAGE_TAG is not set}}
+    deploy:
+      replicas: ${SERVICE_NAME_REPLICAS:-1}
+    mem_limit: ${SERVICE_NAME_MEM_LIMIT:-${DEFAULT_MEM_LIMIT:-256m}}
+    cpus: ${SERVICE_NAME_CPU_LIMIT:-${DEFAULT_CPU_LIMIT:-0.5}}
+    # Removed environment, ports, depends_on, and volumes sections