Add scripts/log_rotate_archive.sh

2026-04-18 23:31:21 -03:00
parent 48fcf25fa3
commit e1597c3ca7
1 changed files with 97 additions and 0 deletions
@@ -0,0 +1,97 @@
+#!/usr/bin/env bash
+#
+# Archive old log files into compressed tarballs.
+#
+# This script is useful when logrotate is unavailable or when application logs
+# need custom archival handling. It does not delete active logs by default.
+#
+# Usage:
+#   bash log_rotate_archive.sh --source /var/log/myapp --archive /backup/logs
+#   bash log_rotate_archive.sh --source ./logs --archive ./archives --older-than-days 3 --delete-originals
+#
+# Options:
+#   --source DIR           Directory containing log files.
+#   --archive DIR          Directory where archives will be stored.
+#   --older-than-days N    Archive files older than N days. Default: 7.
+#   --delete-originals     Delete original files after a successful archive.
+#   --help                 Show this help message.
+
+set -Eeuo pipefail
+
+source_dir=""
+archive_dir=""
+older_than_days="7"
+delete_originals=false
+
+usage() {
+  sed -n '2,21p' "$0" | sed 's/^# \{0,1\}//'
+}
+
+log() {
+  printf '[%s] %s\n' "$(date -Is)" "$*"
+}
+
+while [[ "$#" -gt 0 ]]; do
+  case "$1" in
+    --source)
+      source_dir="${2:-}"
+      shift 2
+      ;;
+    --archive)
+      archive_dir="${2:-}"
+      shift 2
+      ;;
+    --older-than-days)
+      older_than_days="${2:-}"
+      [[ "$older_than_days" =~ ^[0-9]+$ ]] || { printf 'ERROR: --older-than-days must be an integer.\n' >&2; exit 1; }
+      shift 2
+      ;;
+    --delete-originals)
+      delete_originals=true
+      shift
+      ;;
+    --help|-h)
+      usage
+      exit 0
+      ;;
+    *)
+      printf 'ERROR: unknown option: %s\n' "$1" >&2
+      usage >&2
+      exit 1
+      ;;
+  esac
+done
+
+[[ -d "$source_dir" ]] || { printf 'ERROR: source directory does not exist: %s\n' "$source_dir" >&2; exit 1; }
+[[ -n "$archive_dir" ]] || { printf 'ERROR: --archive is required.\n' >&2; exit 1; }
+mkdir -p "$archive_dir"
+
+timestamp="$(date +%Y%m%d-%H%M%S)"
+manifest="$(mktemp)"
+archive_file="${archive_dir}/logs-${timestamp}.tar.gz"
+
+find "$source_dir" -type f -name '*.log' -mtime "+${older_than_days}" -print > "$manifest"
+
+if [[ ! -s "$manifest" ]]; then
+  log "No log files older than ${older_than_days} days were found."
+  rm -f "$manifest"
+  exit 0
+fi
+
+log "Creating archive: ${archive_file}"
+tar -czf "$archive_file" --files-from "$manifest"
+
+if [[ ! -s "$archive_file" ]]; then
+  printf 'ERROR: archive was not created or is empty: %s\n' "$archive_file" >&2
+  rm -f "$manifest"
+  exit 1
+fi
+
+if [[ "$delete_originals" == true ]]; then
+  log "Deleting archived original files."
+  xargs -r rm -f < "$manifest"
+fi
+
+rm -f "$manifest"
+log "Log archive completed successfully."
+