Luca Sacchi Ricciardi
152 lines
4.2 KiB
Bash
Executable File
152 lines
4.2 KiB
Bash
Executable File
#!/bin/bash
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# Laboratori Cloud - Lab Preparation Script
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# Part of: "Corso Soluzioni Cloud"
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#
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# Description: Cleans only resources created by this course to avoid port/network conflicts before starting a lab.
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# Usage: ./scripts/prepare-lab.sh [--dry-run] [--keep-volumes]
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set -u
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RED='\033[0;31m'
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GREEN='\033[0;32m'
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YELLOW='\033[1;33m'
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BLUE='\033[0;34m'
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NC='\033[0m'
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DRY_RUN=false
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KEEP_VOLUMES=false
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print_error() {
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echo -e "${RED}[ERROR]${NC} $1" >&2
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}
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print_success() {
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echo -e "${GREEN}[SUCCESS]${NC} $1"
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}
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print_warn() {
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echo -e "${YELLOW}[WARN]${NC} $1"
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}
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print_info() {
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echo -e "${BLUE}[INFO]${NC} $1"
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}
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print_usage() {
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cat << EOF
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Usage: $0 [--dry-run] [--keep-volumes]
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Prepares the environment for a new lab by removing only resources created by this course.
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Options:
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--dry-run Show what would be removed without changing anything
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--keep-volumes Remove containers and networks, but preserve named volumes
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-h, --help Show this help message
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What this script targets:
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- Containers named lab01*, lab02-*, lab03-*, lab04-*, lab05-*
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- Networks named lab02-vpc-*, lab05-vpc-*, lab-04-storage_default
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- Volumes named lab-02-network_*, lab-03-compute_*, lab-04-storage_*, lab-05-database_*
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Examples:
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$0
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$0 --dry-run
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$0 --keep-volumes
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Exit codes:
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0 - Preparation completed successfully
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1 - Invalid arguments or command failure
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EOF
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}
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while [ $# -gt 0 ]; do
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case "$1" in
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--dry-run)
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DRY_RUN=true
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;;
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--keep-volumes)
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KEEP_VOLUMES=true
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;;
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-h|--help)
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print_usage
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exit 0
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;;
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*)
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print_error "Unknown option: $1"
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echo ""
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print_usage
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exit 1
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;;
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esac
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shift
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done
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mapfile -t COURSE_CONTAINERS < <(docker ps -a --format '{{.ID}} {{.Names}}' 2>/dev/null | grep -E '^[0-9a-f]+ (lab01|lab02-|lab03-|lab04-|lab05-)' | cut -d' ' -f1)
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mapfile -t COURSE_NETWORKS < <(docker network ls --format '{{.Name}}' 2>/dev/null | grep -E '^(lab02-vpc-|lab05-vpc-|lab-04-storage_default)' || true)
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mapfile -t COURSE_VOLUMES < <(docker volume ls --format '{{.Name}}' 2>/dev/null | grep -E '^lab-(02-network|03-compute|04-storage|05-database)_' || true)
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echo "=========================================="
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echo "Laboratori Cloud - Prepare Lab"
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echo "=========================================="
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echo ""
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if [ "$DRY_RUN" = true ]; then
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print_warn "DRY RUN MODE: no changes will be made"
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fi
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if [ "$KEEP_VOLUMES" = true ]; then
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print_warn "KEEP VOLUMES MODE: named volumes will be preserved"
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fi
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echo ""
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print_info "Resources detected for this course:"
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echo " - Containers: ${#COURSE_CONTAINERS[@]}"
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echo " - Networks: ${#COURSE_NETWORKS[@]}"
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echo " - Volumes: ${#COURSE_VOLUMES[@]}"
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echo ""
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if [ ${#COURSE_CONTAINERS[@]} -eq 0 ] && [ ${#COURSE_NETWORKS[@]} -eq 0 ] && { [ "$KEEP_VOLUMES" = true ] || [ ${#COURSE_VOLUMES[@]} -eq 0 ]; }; then
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print_success "No course resources found. Environment already ready."
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exit 0
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fi
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run_or_print() {
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local description="$1"
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shift
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if [ "$DRY_RUN" = true ]; then
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print_info "Would ${description}: $*"
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else
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"$@"
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fi
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}
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if [ ${#COURSE_CONTAINERS[@]} -gt 0 ]; then
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print_info "Removing course containers..."
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run_or_print "remove containers" docker rm -f "${COURSE_CONTAINERS[@]}" >/dev/null 2>&1 || true
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print_success "Processed ${#COURSE_CONTAINERS[@]} container(s)"
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fi
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if [ ${#COURSE_NETWORKS[@]} -gt 0 ]; then
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print_info "Removing course networks..."
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run_or_print "remove networks" docker network rm "${COURSE_NETWORKS[@]}" >/dev/null 2>&1 || true
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print_success "Processed ${#COURSE_NETWORKS[@]} network(s)"
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fi
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if [ "$KEEP_VOLUMES" = false ] && [ ${#COURSE_VOLUMES[@]} -gt 0 ]; then
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print_info "Removing course volumes..."
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run_or_print "remove volumes" docker volume rm "${COURSE_VOLUMES[@]}" >/dev/null 2>&1 || true
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print_success "Processed ${#COURSE_VOLUMES[@]} volume(s)"
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elif [ "$KEEP_VOLUMES" = true ]; then
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print_info "Skipping volume removal as requested"
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fi
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echo ""
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if [ "$DRY_RUN" = true ]; then
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print_success "Dry run completed"
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else
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print_success "Environment ready for the next lab"
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fi
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exit 0
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