backups

2026-04-02 22:28:07 +04:00
parent 0f2ec7c1b3
commit 83262368ac
2 changed files with 248 additions and 0 deletions
@@ -0,0 +1,138 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+ENV_FILE="${ENV_FILE:-$ROOT_DIR/.env}"
+DUMP_FILE=""
+TARGET_HOST="127.0.0.1"
+TARGET_PORT="3306"
+TARGET_USER="root"
+TARGET_PASSWORD=""
+DRY_RUN=0
+FORCE=0
+
+if [[ -f "$ENV_FILE" ]]; then
+    set -a
+    # shellcheck disable=SC1090
+    source "$ENV_FILE"
+    set +a
+fi
+
+# Use password from .env if not overridden
+TARGET_PASSWORD="${TARGET_PASSWORD:-${DOCKER_DB_ROOT_PASSWORD:-}}"
+
+usage() {
+    cat <<EOF
+Usage: $(basename "$0") --from FILE [options]
+
+Restores a full database dump (produced by db-export.sh) into a MySQL instance.
+Works with both the local Docker container and a remote MySQL server.
+
+Options:
+  --from FILE         Dump file to restore (.sql or .sql.gz) (required)
+  --host HOST         Target MySQL host     (default: 127.0.0.1)
+  --port PORT         Target MySQL port     (default: 3306)
+  --user USER         Target MySQL user     (default: root)
+  --password PASS     Target MySQL password (default: from .env DOCKER_DB_ROOT_PASSWORD)
+  --dry-run           Show what would happen without executing
+  --force             Skip the confirmation prompt
+  -h, --help          Show this help
+
+Examples:
+  # Restore into local Docker container (new server, container must be running)
+  $(basename "$0") --from backups/2025-01-01_12-00-00.sql.gz
+
+  # Restore into a remote MySQL server
+  $(basename "$0") --from backups/dump.sql.gz \\
+    --host db.example.com --port 3306 \\
+    --user root --password secret
+EOF
+}
+
+log() { printf '[db-import] %s\n' "$*"; }
+die() { printf 'ERROR: %s\n' "$*" >&2; exit 1; }
+
+mysql_cmd() {
+    mysql \
+        --host="$TARGET_HOST" \
+        --port="$TARGET_PORT" \
+        --user="$TARGET_USER" \
+        --password="$TARGET_PASSWORD" \
+        --connect-timeout=10 \
+        "$@"
+}
+
+# ── argument parsing ──────────────────────────────────────────────────────────
+
+while (($#)); do
+    case "$1" in
+        --from)     DUMP_FILE="$2";     shift ;;
+        --host)     TARGET_HOST="$2";   shift ;;
+        --port)     TARGET_PORT="$2";   shift ;;
+        --user)     TARGET_USER="$2";   shift ;;
+        --password) TARGET_PASSWORD="$2"; shift ;;
+        --dry-run)  DRY_RUN=1 ;;
+        --force)    FORCE=1 ;;
+        -h|--help)  usage; exit 0 ;;
+        *) printf 'Unknown option: %s\n\n' "$1" >&2; usage >&2; exit 1 ;;
+    esac
+    shift
+done
+
+# ── validation ────────────────────────────────────────────────────────────────
+
+[[ -z "$DUMP_FILE" ]] && { usage >&2; die "--from FILE is required"; }
+[[ -f "$DUMP_FILE" ]] || die "file not found: $DUMP_FILE"
+[[ -z "$TARGET_PASSWORD" ]] && die "no password set — use --password or set DOCKER_DB_ROOT_PASSWORD in .env"
+
+if ! command -v mysql >/dev/null 2>&1; then
+    die "'mysql' client not found. Install it: apt install mysql-client  or  brew install mysql-client"
+fi
+
+cd "$ROOT_DIR"
+
+# ── preview ───────────────────────────────────────────────────────────────────
+
+file_size="$(du -sh "$DUMP_FILE" | cut -f1)"
+
+printf '\nMigration plan:\n'
+printf '  Source file : %s (%s)\n' "$DUMP_FILE" "$file_size"
+printf '  Target host : %s:%s\n'   "$TARGET_HOST" "$TARGET_PORT"
+printf '  Target user : %s\n\n'    "$TARGET_USER"
+
+if [[ "$DRY_RUN" -eq 1 ]]; then
+    log "dry-run mode — nothing imported"
+    exit 0
+fi
+
+if [[ "$FORCE" -eq 0 ]]; then
+    printf 'WARNING: this will DROP and recreate all databases in the dump.\n'
+    read -r -p "Continue? [y/N] " confirm
+    [[ "$confirm" =~ ^[Yy]$ ]] || { log "aborted"; exit 0; }
+fi
+
+# ── connectivity check ────────────────────────────────────────────────────────
+
+log "checking connection to ${TARGET_HOST}:${TARGET_PORT}..."
+if ! mysql_cmd --execute="SELECT 1;" >/dev/null 2>&1; then
+    die "cannot connect to MySQL at ${TARGET_HOST}:${TARGET_PORT} as ${TARGET_USER}"
+fi
+log "connection OK"
+
+# ── import ────────────────────────────────────────────────────────────────────
+
+log "restoring $DUMP_FILE → ${TARGET_HOST}:${TARGET_PORT}..."
+log "this may take several minutes..."
+
+if [[ "$DUMP_FILE" == *.gz ]]; then
+    zcat "$DUMP_FILE" | mysql_cmd
+else
+    mysql_cmd < "$DUMP_FILE"
+fi
+
+log "import complete"
+log ""
+log "next steps on the new server:"
+log "  1. Update realmlist:  bash scripts/sync-realmlist.sh"
+log "  2. Start the server:  bash scripts/prod-deploy.sh --no-build"