feat: add targeted lab preparation workflow

2026-04-10 14:50:06 +00:00
parent 1b58727f68
commit 478e940b43
8 changed files with 327 additions and 76 deletions
@@ -0,0 +1,151 @@
+#!/bin/bash
+# Laboratori Cloud - Lab Preparation Script
+# Part of: "Corso Soluzioni Cloud"
+#
+# Description: Cleans only resources created by this course to avoid port/network conflicts before starting a lab.
+# Usage: ./scripts/prepare-lab.sh [--dry-run] [--keep-volumes]
+
+set -u
+
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+BLUE='\033[0;34m'
+NC='\033[0m'
+
+DRY_RUN=false
+KEEP_VOLUMES=false
+
+print_error() {
+    echo -e "${RED}[ERROR]${NC} $1" >&2
+}
+
+print_success() {
+    echo -e "${GREEN}[SUCCESS]${NC} $1"
+}
+
+print_warn() {
+    echo -e "${YELLOW}[WARN]${NC} $1"
+}
+
+print_info() {
+    echo -e "${BLUE}[INFO]${NC} $1"
+}
+
+print_usage() {
+    cat << EOF
+Usage: $0 [--dry-run] [--keep-volumes]
+
+Prepares the environment for a new lab by removing only resources created by this course.
+
+Options:
+  --dry-run       Show what would be removed without changing anything
+  --keep-volumes  Remove containers and networks, but preserve named volumes
+  -h, --help      Show this help message
+
+What this script targets:
+  - Containers named lab01*, lab02-*, lab03-*, lab04-*, lab05-*
+  - Networks named lab02-vpc-*, lab05-vpc-*, lab-04-storage_default
+  - Volumes named lab-02-network_*, lab-03-compute_*, lab-04-storage_*, lab-05-database_*
+
+Examples:
+  $0
+  $0 --dry-run
+  $0 --keep-volumes
+
+Exit codes:
+  0 - Preparation completed successfully
+  1 - Invalid arguments or command failure
+EOF
+}
+
+while [ $# -gt 0 ]; do
+    case "$1" in
+        --dry-run)
+            DRY_RUN=true
+            ;;
+        --keep-volumes)
+            KEEP_VOLUMES=true
+            ;;
+        -h|--help)
+            print_usage
+            exit 0
+            ;;
+        *)
+            print_error "Unknown option: $1"
+            echo ""
+            print_usage
+            exit 1
+            ;;
+    esac
+    shift
+done
+
+mapfile -t COURSE_CONTAINERS < <(docker ps -a --format '{{.ID}} {{.Names}}' 2>/dev/null | grep -E '^[0-9a-f]+ (lab01|lab02-|lab03-|lab04-|lab05-)' | cut -d' ' -f1)
+mapfile -t COURSE_NETWORKS < <(docker network ls --format '{{.Name}}' 2>/dev/null | grep -E '^(lab02-vpc-|lab05-vpc-|lab-04-storage_default)' || true)
+mapfile -t COURSE_VOLUMES < <(docker volume ls --format '{{.Name}}' 2>/dev/null | grep -E '^lab-(02-network|03-compute|04-storage|05-database)_' || true)
+
+echo "=========================================="
+echo "Laboratori Cloud - Prepare Lab"
+echo "=========================================="
+echo ""
+
+if [ "$DRY_RUN" = true ]; then
+    print_warn "DRY RUN MODE: no changes will be made"
+fi
+
+if [ "$KEEP_VOLUMES" = true ]; then
+    print_warn "KEEP VOLUMES MODE: named volumes will be preserved"
+fi
+
+echo ""
+print_info "Resources detected for this course:"
+echo "  - Containers: ${#COURSE_CONTAINERS[@]}"
+echo "  - Networks:   ${#COURSE_NETWORKS[@]}"
+echo "  - Volumes:    ${#COURSE_VOLUMES[@]}"
+echo ""
+
+if [ ${#COURSE_CONTAINERS[@]} -eq 0 ] && [ ${#COURSE_NETWORKS[@]} -eq 0 ] && { [ "$KEEP_VOLUMES" = true ] || [ ${#COURSE_VOLUMES[@]} -eq 0 ]; }; then
+    print_success "No course resources found. Environment already ready."
+    exit 0
+fi
+
+run_or_print() {
+    local description="$1"
+    shift
+
+    if [ "$DRY_RUN" = true ]; then
+        print_info "Would ${description}: $*"
+    else
+        "$@"
+    fi
+}
+
+if [ ${#COURSE_CONTAINERS[@]} -gt 0 ]; then
+    print_info "Removing course containers..."
+    run_or_print "remove containers" docker rm -f "${COURSE_CONTAINERS[@]}" >/dev/null 2>&1 || true
+    print_success "Processed ${#COURSE_CONTAINERS[@]} container(s)"
+fi
+
+if [ ${#COURSE_NETWORKS[@]} -gt 0 ]; then
+    print_info "Removing course networks..."
+    run_or_print "remove networks" docker network rm "${COURSE_NETWORKS[@]}" >/dev/null 2>&1 || true
+    print_success "Processed ${#COURSE_NETWORKS[@]} network(s)"
+fi
+
+if [ "$KEEP_VOLUMES" = false ] && [ ${#COURSE_VOLUMES[@]} -gt 0 ]; then
+    print_info "Removing course volumes..."
+    run_or_print "remove volumes" docker volume rm "${COURSE_VOLUMES[@]}" >/dev/null 2>&1 || true
+    print_success "Processed ${#COURSE_VOLUMES[@]} volume(s)"
+elif [ "$KEEP_VOLUMES" = true ]; then
+    print_info "Skipping volume removal as requested"
+fi
+
+echo ""
+if [ "$DRY_RUN" = true ]; then
+    print_success "Dry run completed"
+else
+    print_success "Environment ready for the next lab"
+fi
+
+exit 0