Authenticator/script/cd.sh

#!/bin/bash

# Continuous Deployment Script for Kubernetes
# This script deploys your application to a Kubernetes cluster

# =============================================================================
# Environment Variables (with default values)
# =============================================================================

# Kubernetes Configuration
KUBECONFIG_DATA="${KUBECONFIG_DATA:-}"
KUBERNETES_URL="${KUBERNETES_URL:-https://kubernetes.default.svc}"
KUBERNETES_NAMESPACE="${KUBERNETES_NAMESPACE:-default}"
KUBERNETES_INGRESS_HOST="${KUBERNETES_INGRESS_HOST:-auth-api.example.com}"
KUBERNETES_DEPLOYMENT_REPLICAS="${KUBERNETES_DEPLOYMENT_REPLICAS:-2}"

# Container Registry
CONTAINER_REGISTRY_URL="${CONTAINER_REGISTRY_URL:-127.0.0.1}"
CONTAINER_REGISTRY_USERNAME="${CONTAINER_REGISTRY_USERNAME:-username}"
CONTAINER_REGISTRY_NAMESPACE="${CONTAINER_REGISTRY_NAMESPACE:-username}"
CONTAINER_REGISTRY_PASSWORD="${CONTAINER_REGISTRY_PASSWORD:-password}"
CONTAINER_IMAGE_NAME="${CONTAINER_IMAGE_NAME:-authenticator}"
CONTAINER_IMAGE_TAG="${CONTAINER_IMAGE_TAG:-latest}"

# Application Configuration
DATABASE_DSN="${DATABASE_DSN:-postgres://postgres:password@localhost:5432/steam_union?sslmode=disable}"
JWT_SECRET="${JWT_SECRET:-your-secret-key-change-in-production}"
JWT_ISSUER="${JWT_ISSUER:-cialloo-authenticator}"
JWT_EXPIRES_IN="${JWT_EXPIRES_IN:-604800}"
STEAM_CALLBACK_URL="${STEAM_CALLBACK_URL:-https://www.cialloo.com/api/authenticator/steam/callback}"
STEAM_FRONTEND_CALLBACK_URL="${STEAM_FRONTEND_CALLBACK_URL:-https://www.cialloo.com/auth/callback}"
REDIS_HOST="${REDIS_HOST:-redis.production.svc.cluster.local:6379}"
REDIS_TYPE="${REDIS_TYPE:-node}"
REDIS_PASS="${REDIS_PASS:-}"
FORCE_RESTART="${FORCE_RESTART:-true}"

# =============================================================================
# Functions
# =============================================================================

# Print help message
print_help() {
    echo "Usage: $0 [OPTIONS]"
    echo ""
    echo "Environment Variables:"
    echo "  KUBECONFIG_DATA              Kubernetes config data (base64 encoded)"
    echo "  KUBERNETES_URL               Kubernetes API URL (default: https://kubernetes.default.svc)"
    echo "  KUBERNETES_NAMESPACE         Kubernetes namespace (default: default)"
    echo "  KUBERNETES_INGRESS_HOST      Ingress host (default: auth-api.example.com)"
    echo "  KUBERNETES_DEPLOYMENT_REPLICAS  Number of pod replicas (default: 2)"
    echo "  CONTAINER_REGISTRY_URL       Container registry URL (default: 127.0.0.1)"
    echo "  CONTAINER_REGISTRY_USERNAME  Registry username"
    echo "  CONTAINER_REGISTRY_PASSWORD  Registry password"
    echo "  CONTAINER_IMAGE_NAME         Image name (default: authenticator)"
    echo "  CONTAINER_IMAGE_TAG          Image tag (default: latest)"
    echo "  DATABASE_DSN                 Database connection string"
    echo "  JWT_SECRET                   JWT secret key"
    echo "  JWT_ISSUER                   JWT issuer"
    echo "  JWT_EXPIRES_IN               JWT expiration time in seconds"
    echo "  STEAM_CALLBACK_URL           Steam OAuth callback URL"
    echo "  STEAM_FRONTEND_CALLBACK_URL  Frontend callback URL after auth"
    echo "  REDIS_HOST                   Redis host and port"
    echo "  REDIS_TYPE                   Redis type (node/cluster)"
    echo "  REDIS_PASS                   Redis password"
    echo "  FORCE_RESTART                Force rollout restart (default: true)"
    echo ""
    echo "Commands:"
    echo "  deploy      Deploy application to Kubernetes"
    echo "  help        Show this help message (default)"
}

# Setup kubectl configuration
setup_kubectl() {
    echo "Setting up kubectl configuration..."
    
    if [ -z "${KUBECONFIG_DATA}" ]; then
        echo "✗ KUBECONFIG_DATA is not set"
        return 1
    fi
    
    mkdir -p ~/.kube
    echo "${KUBECONFIG_DATA}" | base64 -d > ~/.kube/config
    chmod 600 ~/.kube/config
    
    echo "✓ kubectl configured"
    return 0
}

# Create namespace if it doesn't exist
create_namespace() {
    echo "Checking namespace: ${KUBERNETES_NAMESPACE}"
    
    kubectl get namespace "${KUBERNETES_NAMESPACE}" &> /dev/null
    
    if [ $? -ne 0 ]; then
        echo "Creating namespace: ${KUBERNETES_NAMESPACE}"
        kubectl create namespace "${KUBERNETES_NAMESPACE}"
    else
        echo "✓ Namespace exists: ${KUBERNETES_NAMESPACE}"
    fi
}

# Create image pull secret
create_image_pull_secret() {
    echo "Creating image pull secret..."
    
    kubectl create secret docker-registry regcred \
        --docker-server="${CONTAINER_REGISTRY_URL}" \
        --docker-username="${CONTAINER_REGISTRY_USERNAME}" \
        --docker-password="${CONTAINER_REGISTRY_PASSWORD}" \
        --namespace="${KUBERNETES_NAMESPACE}" \
        --dry-run=client -o yaml | kubectl apply -f -
    
    echo "✓ Image pull secret created/updated"
}

# Create or update application secrets
create_app_secrets() {
    echo "Creating application secrets..."
    
    kubectl create secret generic authenticator-secrets \
        --from-literal=database-dsn="${DATABASE_DSN}" \
        --from-literal=jwt-secret="${JWT_SECRET}" \
        --from-literal=redis-pass="${REDIS_PASS}" \
        --namespace="${KUBERNETES_NAMESPACE}" \
        --dry-run=client -o yaml | kubectl apply -f -
    
    echo "✓ Application secrets created/updated"
}

# Deploy to Kubernetes
deploy_to_kubernetes() {
    FULL_IMAGE_NAME="${CONTAINER_REGISTRY_URL}/${CONTAINER_REGISTRY_NAMESPACE}/${CONTAINER_IMAGE_NAME}:${CONTAINER_IMAGE_TAG}"
    
    echo "=========================================="
    echo "Deploying to Kubernetes"
    echo "=========================================="
    echo "Namespace: ${KUBERNETES_NAMESPACE}"
    echo "Image: ${FULL_IMAGE_NAME}"
    echo "Host: ${KUBERNETES_INGRESS_HOST}"
    echo "Database DSN: ${DATABASE_DSN}"
    echo ""
    
    # Setup kubectl
    setup_kubectl || return 1
    
    # Create namespace
    create_namespace || return 1
    
    # Create image pull secret
    create_image_pull_secret || return 1
    
    # Create application secrets
    create_app_secrets || return 1
    
    # Apply Kubernetes manifests with variable substitution
    echo "Applying Kubernetes manifests..."
    
    export FULL_IMAGE_NAME
    export KUBERNETES_NAMESPACE
    export KUBERNETES_INGRESS_HOST
    export KUBERNETES_DEPLOYMENT_REPLICAS
    export CONTAINER_IMAGE_NAME
    export CONTAINER_REGISTRY_URL
    export CONTAINER_REGISTRY_NAMESPACE
    export CONTAINER_IMAGE_TAG
    export DATABASE_DSN
    export JWT_ISSUER
    export JWT_EXPIRES_IN
    export STEAM_CALLBACK_URL
    export STEAM_FRONTEND_CALLBACK_URL
    export REDIS_HOST
    export REDIS_TYPE
    
    for file in script/k8s/*.yaml; do
        echo "Applying: $(basename $file)"
        envsubst < "$file" | kubectl apply -f -
    done
    
    echo ""
    echo "✓ Deployment complete"
    echo ""
    echo "Waiting for rollout..."
    
    # Force restart if enabled
    if [ "${FORCE_RESTART}" = "true" ]; then
        echo "Forcing rollout restart..."
        kubectl rollout restart deployment/${CONTAINER_IMAGE_NAME} -n ${KUBERNETES_NAMESPACE}
    fi
    
    kubectl rollout status deployment/${CONTAINER_IMAGE_NAME} -n ${KUBERNETES_NAMESPACE} --timeout=300s
    
    if [ $? -eq 0 ]; then
        echo ""
        echo "✓ Application is ready"
        echo "URL: http://${KUBERNETES_INGRESS_HOST}"
        return 0
    else
        echo ""
        echo "✗ Rollout failed or timed out"
        return 1
    fi
}

# =============================================================================
# Main Script
# =============================================================================

case "${1:-help}" in
    deploy)
        deploy_to_kubernetes
        ;;
    help|*)
        print_help
        ;;
esac